korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-09-22 12:44:11 +08:00
Code Issues Packages Projects Releases Wiki Activity

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

Browse Source
This commit is contained in:
David S. Miller 2018-12-21 15:06:20 -08:00
commit ce28bb4453
63 changed files with 777 additions and 637 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
MAINTAINERS
View File

@ -2633,6 +2633,13 @@ S: Maintained
F: Documentation/devicetree/bindings/sound/axentia,*
F: sound/soc/atmel/tse850-pcm5142.c
AXXIA I2C CONTROLLER
M: Krzysztof Adamski <krzysztof.adamski@nokia.com>
L: linux-i2c@vger.kernel.org
S: Maintained
F: Documentation/devicetree/bindings/i2c/i2c-axxia.txt
F: drivers/i2c/busses/i2c-axxia.c
AZ6007 DVB DRIVER
M: Mauro Carvalho Chehab <mchehab@kernel.org>
L: linux-media@vger.kernel.org
@ -4050,7 +4057,7 @@ S: Maintained
F: drivers/media/dvb-frontends/cxd2820r*
CXGB3 ETHERNET DRIVER (CXGB3)
M: Santosh Raspatur <santosh@chelsio.com>
M: Arjun Vynipadath <arjun@chelsio.com>
L: netdev@vger.kernel.org
W: http://www.chelsio.com
S: Supported
@ -4079,7 +4086,7 @@ S: Supported
F: drivers/crypto/chelsio
CXGB4 ETHERNET DRIVER (CXGB4)
M: Ganesh Goudar <ganeshgr@chelsio.com>
M: Arjun Vynipadath <arjun@chelsio.com>
L: netdev@vger.kernel.org
W: http://www.chelsio.com
S: Supported

9
Makefile
View File

@ -1076,7 +1076,7 @@ scripts: scripts_basic scripts_dtc asm-generic gcc-plugins $(autoksyms_h)
# version.h and scripts_basic is processed / created.
# Listed in dependency order
PHONY += prepare archprepare macroprepare prepare0 prepare1 prepare2 prepare3
PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
# prepare3 is used to check if we are building in a separate output directory,
# and if so do:
@ -1099,9 +1099,7 @@ prepare2: prepare3 outputmakefile asm-generic
prepare1: prepare2 $(version_h) $(autoksyms_h) include/generated/utsrelease.h
$(cmd_crmodverdir)
macroprepare: prepare1 archmacros
archprepare: archheaders archscripts macroprepare scripts_basic
archprepare: archheaders archscripts prepare1 scripts_basic
prepare0: archprepare gcc-plugins
$(Q)$(MAKE) $(build)=.
@ -1177,9 +1175,6 @@ archheaders:
PHONY += archscripts
archscripts:
PHONY += archmacros
archmacros:
PHONY += __headers
__headers: $(version_h) scripts_basic uapi-asm-generic archheaders archscripts
$(Q)$(MAKE) $(build)=scripts build_unifdef

13
arch/sparc/kernel/setup_32.c
View File

@ -310,25 +310,24 @@ void __init setup_arch(char **cmdline_p)
register_console(&prom_early_console);
printk("ARCH: ");
switch(sparc_cpu_model) {
case sun4m:
printk("SUN4M\n");
pr_info("ARCH: SUN4M\n");
break;
case sun4d:
printk("SUN4D\n");
pr_info("ARCH: SUN4D\n");
break;
case sun4e:
printk("SUN4E\n");
pr_info("ARCH: SUN4E\n");
break;
case sun4u:
printk("SUN4U\n");
pr_info("ARCH: SUN4U\n");
break;
case sparc_leon:
printk("LEON\n");
pr_info("ARCH: LEON\n");
break;
default:
printk("UNKNOWN!\n");
pr_info("ARCH: UNKNOWN!\n");
break;
}

4
arch/sparc/kernel/setup_64.c
View File

@ -642,9 +642,9 @@ void __init setup_arch(char **cmdline_p)
register_console(&prom_early_console);
if (tlb_type == hypervisor)
printk("ARCH: SUN4V\n");
pr_info("ARCH: SUN4V\n");
else
printk("ARCH: SUN4U\n");
pr_info("ARCH: SUN4U\n");
#ifdef CONFIG_DUMMY_CONSOLE
conswitchp = &dummy_con;

2
arch/sparc/vdso/Makefile
View File

@ -34,7 +34,7 @@ targets += $(vdso_img_sodbg) $(vdso_img-y:%=vdso%.so)
CPPFLAGS_vdso.lds += -P -C
VDSO_LDFLAGS_vdso.lds = -m elf64_sparc -soname linux-vdso.so.1 --no-undefined \
-z max-page-size=8192 -z common-page-size=8192
-z max-page-size=8192
$(obj)/vdso64.so.dbg: $(obj)/vdso.lds $(vobjs) FORCE
$(call if_changed,vdso)

7
arch/x86/Makefile
View File

@ -232,13 +232,6 @@ archscripts: scripts_basic
archheaders:
$(Q)$(MAKE) $(build)=arch/x86/entry/syscalls all
archmacros:
$(Q)$(MAKE) $(build)=arch/x86/kernel arch/x86/kernel/macros.s
ASM_MACRO_FLAGS = -Wa,arch/x86/kernel/macros.s
export ASM_MACRO_FLAGS
KBUILD_CFLAGS += $(ASM_MACRO_FLAGS)
###
# Kernel objects

2
arch/x86/entry/calling.h
View File

@ -352,7 +352,7 @@ For 32-bit we have the following conventions - kernel is built with
.macro CALL_enter_from_user_mode
#ifdef CONFIG_CONTEXT_TRACKING
#ifdef HAVE_JUMP_LABEL
STATIC_BRANCH_JMP l_yes=.Lafter_call_\@, key=context_tracking_enabled, branch=1
STATIC_JUMP_IF_FALSE .Lafter_call_\@, context_tracking_enabled, def=0
#endif
call enter_from_user_mode
.Lafter_call_\@:

3
arch/x86/entry/vdso/Makefile
View File

@ -171,7 +171,8 @@ quiet_cmd_vdso = VDSO $@
sh $(srctree)/$(src)/checkundef.sh '$(NM)' '$@'
VDSO_LDFLAGS = -shared $(call ld-option, --hash-style=both) \
$(call ld-option, --build-id) -Bsymbolic
$(call ld-option, --build-id) $(call ld-option, --eh-frame-hdr) \
-Bsymbolic
GCOV_PROFILE := n
#

20
arch/x86/include/asm/alternative-asm.h
View File

@ -7,24 +7,16 @@
#include <asm/asm.h>
#ifdef CONFIG_SMP
.macro LOCK_PREFIX_HERE
.macro LOCK_PREFIX
672: lock
.pushsection .smp_locks,"a"
.balign 4
.long 671f - . # offset
.long 672b - .
.popsection
671:
.endm
.macro LOCK_PREFIX insn:vararg
LOCK_PREFIX_HERE
lock \insn
.endm
.endm
#else
.macro LOCK_PREFIX_HERE
.endm
.macro LOCK_PREFIX insn:vararg
.endm
.macro LOCK_PREFIX
.endm
#endif
/*

11
arch/x86/include/asm/alternative.h
View File

@ -31,8 +31,15 @@
*/
#ifdef CONFIG_SMP
#define LOCK_PREFIX_HERE "LOCK_PREFIX_HERE\n\t"
#define LOCK_PREFIX "LOCK_PREFIX "
#define LOCK_PREFIX_HERE \
".pushsection .smp_locks,\"a\"\n" \
".balign 4\n" \
".long 671f - .\n" /* offset */ \
".popsection\n" \
"671:"
#define LOCK_PREFIX LOCK_PREFIX_HERE "\n\tlock; "
#else /* ! CONFIG_SMP */
#define LOCK_PREFIX_HERE ""
#define LOCK_PREFIX ""

53
arch/x86/include/asm/asm.h
View File

@ -120,25 +120,12 @@
/* Exception table entry */
#ifdef __ASSEMBLY__
# define _ASM_EXTABLE_HANDLE(from, to, handler) \
ASM_EXTABLE_HANDLE from to handler
.macro ASM_EXTABLE_HANDLE from:req to:req handler:req
.pushsection "__ex_table","a"
.balign 4
.long (\from) - .
.long (\to) - .
.long (\handler) - .
.pushsection "__ex_table","a" ; \
.balign 4 ; \
.long (from) - . ; \
.long (to) - . ; \
.long (handler) - . ; \
.popsection
.endm
#else /* __ASSEMBLY__ */
# define _ASM_EXTABLE_HANDLE(from, to, handler) \
"ASM_EXTABLE_HANDLE from=" #from " to=" #to \
" handler=\"" #handler "\"\n\t"
/* For C file, we already have NOKPROBE_SYMBOL macro */
#endif /* __ASSEMBLY__ */
# define _ASM_EXTABLE(from, to) \
_ASM_EXTABLE_HANDLE(from, to, ex_handler_default)
@ -161,7 +148,6 @@
_ASM_PTR (entry); \
.popsection
#ifdef __ASSEMBLY__
.macro ALIGN_DESTINATION
/* check for bad alignment of destination */
movl %edi,%ecx
@ -185,7 +171,34 @@
_ASM_EXTABLE_UA(100b, 103b)
_ASM_EXTABLE_UA(101b, 103b)
.endm
#endif /* __ASSEMBLY__ */
#else
# define _EXPAND_EXTABLE_HANDLE(x) #x
# define _ASM_EXTABLE_HANDLE(from, to, handler) \
" .pushsection \"__ex_table\",\"a\"\n" \
" .balign 4\n" \
" .long (" #from ") - .\n" \
" .long (" #to ") - .\n" \
" .long (" _EXPAND_EXTABLE_HANDLE(handler) ") - .\n" \
" .popsection\n"
# define _ASM_EXTABLE(from, to) \
_ASM_EXTABLE_HANDLE(from, to, ex_handler_default)
# define _ASM_EXTABLE_UA(from, to) \
_ASM_EXTABLE_HANDLE(from, to, ex_handler_uaccess)
# define _ASM_EXTABLE_FAULT(from, to) \
_ASM_EXTABLE_HANDLE(from, to, ex_handler_fault)
# define _ASM_EXTABLE_EX(from, to) \
_ASM_EXTABLE_HANDLE(from, to, ex_handler_ext)
# define _ASM_EXTABLE_REFCOUNT(from, to) \
_ASM_EXTABLE_HANDLE(from, to, ex_handler_refcount)
/* For C file, we already have NOKPROBE_SYMBOL macro */
#endif
#ifndef __ASSEMBLY__
/*

98
arch/x86/include/asm/bug.h
View File

@ -4,8 +4,6 @@
#include <linux/stringify.h>
#ifndef __ASSEMBLY__
/*
* Despite that some emulators terminate on UD2, we use it for WARN().
*
@ -22,15 +20,53 @@
#define LEN_UD2 2
#ifdef CONFIG_GENERIC_BUG
#ifdef CONFIG_X86_32
# define __BUG_REL(val) ".long " __stringify(val)
#else
# define __BUG_REL(val) ".long " __stringify(val) " - 2b"
#endif
#ifdef CONFIG_DEBUG_BUGVERBOSE
#define _BUG_FLAGS(ins, flags) \
do { \
asm volatile("ASM_BUG ins=\"" ins "\" file=%c0 line=%c1 " \
"flags=%c2 size=%c3" \
: : "i" (__FILE__), "i" (__LINE__), \
"i" (flags), \
asm volatile("1:\t" ins "\n" \
".pushsection __bug_table,\"aw\"\n" \
"2:\t" __BUG_REL(1b) "\t# bug_entry::bug_addr\n" \
"\t" __BUG_REL(%c0) "\t# bug_entry::file\n" \
"\t.word %c1" "\t# bug_entry::line\n" \
"\t.word %c2" "\t# bug_entry::flags\n" \
"\t.org 2b+%c3\n" \
".popsection" \
: : "i" (__FILE__), "i" (__LINE__), \
"i" (flags), \
"i" (sizeof(struct bug_entry))); \
} while (0)
#else /* !CONFIG_DEBUG_BUGVERBOSE */
#define _BUG_FLAGS(ins, flags) \
do { \
asm volatile("1:\t" ins "\n" \
".pushsection __bug_table,\"aw\"\n" \
"2:\t" __BUG_REL(1b) "\t# bug_entry::bug_addr\n" \
"\t.word %c0" "\t# bug_entry::flags\n" \
"\t.org 2b+%c1\n" \
".popsection" \
: : "i" (flags), \
"i" (sizeof(struct bug_entry))); \
} while (0)
#endif /* CONFIG_DEBUG_BUGVERBOSE */
#else
#define _BUG_FLAGS(ins, flags) asm volatile(ins)
#endif /* CONFIG_GENERIC_BUG */
#define HAVE_ARCH_BUG
#define BUG() \
do { \
@ -46,54 +82,4 @@ do { \
#include <asm-generic/bug.h>
#else /* __ASSEMBLY__ */
#ifdef CONFIG_GENERIC_BUG
#ifdef CONFIG_X86_32
.macro __BUG_REL val:req
.long \val
.endm
#else
.macro __BUG_REL val:req
.long \val - 2b
.endm
#endif
#ifdef CONFIG_DEBUG_BUGVERBOSE
.macro ASM_BUG ins:req file:req line:req flags:req size:req
1: \ins
.pushsection __bug_table,"aw"
2: __BUG_REL val=1b # bug_entry::bug_addr
__BUG_REL val=\file # bug_entry::file
.word \line # bug_entry::line
.word \flags # bug_entry::flags
.org 2b+\size
.popsection
.endm
#else /* !CONFIG_DEBUG_BUGVERBOSE */
.macro ASM_BUG ins:req file:req line:req flags:req size:req
1: \ins
.pushsection __bug_table,"aw"
2: __BUG_REL val=1b # bug_entry::bug_addr
.word \flags # bug_entry::flags
.org 2b+\size
.popsection
.endm
#endif /* CONFIG_DEBUG_BUGVERBOSE */
#else /* CONFIG_GENERIC_BUG */
.macro ASM_BUG ins:req file:req line:req flags:req size:req
\ins
.endm
#endif /* CONFIG_GENERIC_BUG */
#endif /* __ASSEMBLY__ */
#endif /* _ASM_X86_BUG_H */

82
arch/x86/include/asm/cpufeature.h
View File

@ -2,10 +2,10 @@
#ifndef _ASM_X86_CPUFEATURE_H
#define _ASM_X86_CPUFEATURE_H
#ifdef __KERNEL__
#ifndef __ASSEMBLY__
#include <asm/processor.h>
#if defined(__KERNEL__) && !defined(__ASSEMBLY__)
#include <asm/asm.h>
#include <linux/bitops.h>
@ -161,10 +161,37 @@ extern void clear_cpu_cap(struct cpuinfo_x86 *c, unsigned int bit);
*/
static __always_inline __pure bool _static_cpu_has(u16 bit)
{
asm_volatile_goto("STATIC_CPU_HAS bitnum=%[bitnum] "
"cap_byte=\"%[cap_byte]\" "
"feature=%P[feature] t_yes=%l[t_yes] "
"t_no=%l[t_no] always=%P[always]"
asm_volatile_goto("1: jmp 6f\n"
"2:\n"
".skip -(((5f-4f) - (2b-1b)) > 0) * "
"((5f-4f) - (2b-1b)),0x90\n"
"3:\n"
".section .altinstructions,\"a\"\n"
" .long 1b - .\n" /* src offset */
" .long 4f - .\n" /* repl offset */
" .word %P[always]\n" /* always replace */
" .byte 3b - 1b\n" /* src len */
" .byte 5f - 4f\n" /* repl len */
" .byte 3b - 2b\n" /* pad len */
".previous\n"
".section .altinstr_replacement,\"ax\"\n"
"4: jmp %l[t_no]\n"
"5:\n"
".previous\n"
".section .altinstructions,\"a\"\n"
" .long 1b - .\n" /* src offset */
" .long 0\n" /* no replacement */
" .word %P[feature]\n" /* feature bit */
" .byte 3b - 1b\n" /* src len */
" .byte 0\n" /* repl len */
" .byte 0\n" /* pad len */
".previous\n"
".section .altinstr_aux,\"ax\"\n"
"6:\n"
" testb %[bitnum],%[cap_byte]\n"
" jnz %l[t_yes]\n"
" jmp %l[t_no]\n"
".previous\n"
: : [feature] "i" (bit),
[always] "i" (X86_FEATURE_ALWAYS),
[bitnum] "i" (1 << (bit & 7)),
@ -199,44 +226,5 @@ t_no:
#define CPU_FEATURE_TYPEVAL boot_cpu_data.x86_vendor, boot_cpu_data.x86, \
boot_cpu_data.x86_model
#else /* __ASSEMBLY__ */
.macro STATIC_CPU_HAS bitnum:req cap_byte:req feature:req t_yes:req t_no:req always:req
1:
jmp 6f
2:
.skip -(((5f-4f) - (2b-1b)) > 0) * ((5f-4f) - (2b-1b)),0x90
3:
.section .altinstructions,"a"
.long 1b - . /* src offset */
.long 4f - . /* repl offset */
.word \always /* always replace */
.byte 3b - 1b /* src len */
.byte 5f - 4f /* repl len */
.byte 3b - 2b /* pad len */
.previous
.section .altinstr_replacement,"ax"
4:
jmp \t_no
5:
.previous
.section .altinstructions,"a"
.long 1b - . /* src offset */
.long 0 /* no replacement */
.word \feature /* feature bit */
.byte 3b - 1b /* src len */
.byte 0 /* repl len */
.byte 0 /* pad len */
.previous
.section .altinstr_aux,"ax"
6:
testb \bitnum,\cap_byte
jnz \t_yes
jmp \t_no
.previous
.endm
#endif /* __ASSEMBLY__ */
#endif /* __KERNEL__ */
#endif /* defined(__KERNEL__) && !defined(__ASSEMBLY__) */
#endif /* _ASM_X86_CPUFEATURE_H */

15
arch/x86/include/asm/fsgsbase.h
View File

@ -16,8 +16,8 @@
*/
extern unsigned long x86_fsbase_read_task(struct task_struct *task);
extern unsigned long x86_gsbase_read_task(struct task_struct *task);
extern int x86_fsbase_write_task(struct task_struct *task, unsigned long fsbase);
extern int x86_gsbase_write_task(struct task_struct *task, unsigned long gsbase);
extern void x86_fsbase_write_task(struct task_struct *task, unsigned long fsbase);
extern void x86_gsbase_write_task(struct task_struct *task, unsigned long gsbase);
/* Helper functions for reading/writing FS/GS base */
@ -39,8 +39,15 @@ static inline unsigned long x86_gsbase_read_cpu_inactive(void)
return gsbase;
}
extern void x86_fsbase_write_cpu(unsigned long fsbase);
extern void x86_gsbase_write_cpu_inactive(unsigned long gsbase);
static inline void x86_fsbase_write_cpu(unsigned long fsbase)
{
wrmsrl(MSR_FS_BASE, fsbase);
}
static inline void x86_gsbase_write_cpu_inactive(unsigned long gsbase)
{
wrmsrl(MSR_KERNEL_GS_BASE, gsbase);
}
#endif /* CONFIG_X86_64 */

72
arch/x86/include/asm/jump_label.h
View File

@ -2,6 +2,19 @@
#ifndef _ASM_X86_JUMP_LABEL_H
#define _ASM_X86_JUMP_LABEL_H
#ifndef HAVE_JUMP_LABEL
/*
* For better or for worse, if jump labels (the gcc extension) are missing,
* then the entire static branch patching infrastructure is compiled out.
* If that happens, the code in here will malfunction. Raise a compiler
* error instead.
*
* In theory, jump labels and the static branch patching infrastructure
* could be decoupled to fix this.
*/
#error asm/jump_label.h included on a non-jump-label kernel
#endif
#define JUMP_LABEL_NOP_SIZE 5
#ifdef CONFIG_X86_64
@ -20,9 +33,15 @@
static __always_inline bool arch_static_branch(struct static_key *key, bool branch)
{
asm_volatile_goto("STATIC_BRANCH_NOP l_yes=\"%l[l_yes]\" key=\"%c0\" "
"branch=\"%c1\""
: : "i" (key), "i" (branch) : : l_yes);
asm_volatile_goto("1:"
".byte " __stringify(STATIC_KEY_INIT_NOP) "\n\t"
".pushsection __jump_table, \"aw\" \n\t"
_ASM_ALIGN "\n\t"
".long 1b - ., %l[l_yes] - . \n\t"
_ASM_PTR "%c0 + %c1 - .\n\t"
".popsection \n\t"
: : "i" (key), "i" (branch) : : l_yes);
return false;
l_yes:
return true;
@ -30,8 +49,14 @@ l_yes:
static __always_inline bool arch_static_branch_jump(struct static_key *key, bool branch)
{
asm_volatile_goto("STATIC_BRANCH_JMP l_yes=\"%l[l_yes]\" key=\"%c0\" "
"branch=\"%c1\""
asm_volatile_goto("1:"
".byte 0xe9\n\t .long %l[l_yes] - 2f\n\t"
"2:\n\t"
".pushsection __jump_table, \"aw\" \n\t"
_ASM_ALIGN "\n\t"
".long 1b - ., %l[l_yes] - . \n\t"
_ASM_PTR "%c0 + %c1 - .\n\t"
".popsection \n\t"
: : "i" (key), "i" (branch) : : l_yes);
return false;
@ -41,26 +66,37 @@ l_yes:
#else /* __ASSEMBLY__ */
.macro STATIC_BRANCH_NOP l_yes:req key:req branch:req
.Lstatic_branch_nop_\@:
.byte STATIC_KEY_INIT_NOP
.Lstatic_branch_no_after_\@:
.macro STATIC_JUMP_IF_TRUE target, key, def
.Lstatic_jump_\@:
.if \def
/* Equivalent to "jmp.d32 \target" */
.byte 0xe9
.long \target - .Lstatic_jump_after_\@
.Lstatic_jump_after_\@:
.else
.byte STATIC_KEY_INIT_NOP
.endif
.pushsection __jump_table, "aw"
_ASM_ALIGN
.long .Lstatic_branch_nop_\@ - ., \l_yes - .
_ASM_PTR \key + \branch - .
.long .Lstatic_jump_\@ - ., \target - .
_ASM_PTR \key - .
.popsection
.endm
.macro STATIC_BRANCH_JMP l_yes:req key:req branch:req
.Lstatic_branch_jmp_\@:
.byte 0xe9
.long \l_yes - .Lstatic_branch_jmp_after_\@
.Lstatic_branch_jmp_after_\@:
.macro STATIC_JUMP_IF_FALSE target, key, def
.Lstatic_jump_\@:
.if \def
.byte STATIC_KEY_INIT_NOP
.else
/* Equivalent to "jmp.d32 \target" */
.byte 0xe9
.long \target - .Lstatic_jump_after_\@
.Lstatic_jump_after_\@:
.endif
.pushsection __jump_table, "aw"
_ASM_ALIGN
.long .Lstatic_branch_jmp_\@ - ., \l_yes - .
_ASM_PTR \key + \branch - .
.long .Lstatic_jump_\@ - ., \target - .
_ASM_PTR \key + 1 - .
.popsection
.endm

56
arch/x86/include/asm/paravirt_types.h
View File

@ -348,11 +348,23 @@ extern struct paravirt_patch_template pv_ops;
#define paravirt_clobber(clobber) \
[paravirt_clobber] "i" (clobber)
/*
* Generate some code, and mark it as patchable by the
* apply_paravirt() alternate instruction patcher.
*/
#define _paravirt_alt(insn_string, type, clobber) \
"771:\n\t" insn_string "\n" "772:\n" \
".pushsection .parainstructions,\"a\"\n" \
_ASM_ALIGN "\n" \
_ASM_PTR " 771b\n" \
" .byte " type "\n" \
" .byte 772b-771b\n" \
" .short " clobber "\n" \
".popsection\n"
/* Generate patchable code, with the default asm parameters. */
#define paravirt_call \
"PARAVIRT_CALL type=\"%c[paravirt_typenum]\"" \
" clobber=\"%c[paravirt_clobber]\"" \
" pv_opptr=\"%c[paravirt_opptr]\";"
#define paravirt_alt(insn_string) \
_paravirt_alt(insn_string, "%c[paravirt_typenum]", "%c[paravirt_clobber]")
/* Simple instruction patching code. */
#define NATIVE_LABEL(a,x,b) "\n\t.globl " a #x "_" #b "\n" a #x "_" #b ":\n\t"
@ -372,6 +384,16 @@ unsigned native_patch(u8 type, void *ibuf, unsigned long addr, unsigned len);
int paravirt_disable_iospace(void);
/*
* This generates an indirect call based on the operation type number.
* The type number, computed in PARAVIRT_PATCH, is derived from the
* offset into the paravirt_patch_template structure, and can therefore be
* freely converted back into a structure offset.
*/
#define PARAVIRT_CALL \
ANNOTATE_RETPOLINE_SAFE \
"call *%c[paravirt_opptr];"
/*
* These macros are intended to wrap calls through one of the paravirt
* ops structs, so that they can be later identified and patched at
@ -509,7 +531,7 @@ int paravirt_disable_iospace(void);
/* since this condition will never hold */ \
if (sizeof(rettype) > sizeof(unsigned long)) { \
asm volatile(pre \
paravirt_call \
paravirt_alt(PARAVIRT_CALL) \
post \
: call_clbr, ASM_CALL_CONSTRAINT \
: paravirt_type(op), \
@ -519,7 +541,7 @@ int paravirt_disable_iospace(void);
__ret = (rettype)((((u64)__edx) << 32) | __eax); \
} else { \
asm volatile(pre \
paravirt_call \
paravirt_alt(PARAVIRT_CALL) \
post \
: call_clbr, ASM_CALL_CONSTRAINT \
: paravirt_type(op), \
@ -546,7 +568,7 @@ int paravirt_disable_iospace(void);
PVOP_VCALL_ARGS; \
PVOP_TEST_NULL(op); \
asm volatile(pre \
paravirt_call \
paravirt_alt(PARAVIRT_CALL) \
post \
: call_clbr, ASM_CALL_CONSTRAINT \
: paravirt_type(op), \
@ -664,26 +686,6 @@ struct paravirt_patch_site {
extern struct paravirt_patch_site __parainstructions[],
__parainstructions_end[];
#else /* __ASSEMBLY__ */
/*
* This generates an indirect call based on the operation type number.
* The type number, computed in PARAVIRT_PATCH, is derived from the
* offset into the paravirt_patch_template structure, and can therefore be
* freely converted back into a structure offset.
*/
.macro PARAVIRT_CALL type:req clobber:req pv_opptr:req
771: ANNOTATE_RETPOLINE_SAFE
call *\pv_opptr
772: .pushsection .parainstructions,"a"
_ASM_ALIGN
_ASM_PTR 771b
.byte \type
.byte 772b-771b
.short \clobber
.popsection
.endm
#endif /* __ASSEMBLY__ */
#endif /* _ASM_X86_PARAVIRT_TYPES_H */

5
arch/x86/include/asm/pgtable_64_types.h
View File

@ -111,6 +111,11 @@ extern unsigned int ptrs_per_p4d;
*/
#define MAXMEM (1UL << MAX_PHYSMEM_BITS)
#define GUARD_HOLE_PGD_ENTRY -256UL
#define GUARD_HOLE_SIZE (16UL << PGDIR_SHIFT)
#define GUARD_HOLE_BASE_ADDR (GUARD_HOLE_PGD_ENTRY << PGDIR_SHIFT)
#define GUARD_HOLE_END_ADDR (GUARD_HOLE_BASE_ADDR + GUARD_HOLE_SIZE)
#define LDT_PGD_ENTRY -240UL
#define LDT_BASE_ADDR (LDT_PGD_ENTRY << PGDIR_SHIFT)
#define LDT_END_ADDR (LDT_BASE_ADDR + PGDIR_SIZE)

81
arch/x86/include/asm/refcount.h
View File

@ -4,41 +4,6 @@
* x86-specific implementation of refcount_t. Based on PAX_REFCOUNT from
* PaX/grsecurity.
*/
#ifdef __ASSEMBLY__
#include <asm/asm.h>
#include <asm/bug.h>
.macro REFCOUNT_EXCEPTION counter:req
.pushsection .text..refcount
111: lea \counter, %_ASM_CX
112: ud2
ASM_UNREACHABLE
.popsection
113: _ASM_EXTABLE_REFCOUNT(112b, 113b)
.endm
/* Trigger refcount exception if refcount result is negative. */
.macro REFCOUNT_CHECK_LT_ZERO counter:req
js 111f
REFCOUNT_EXCEPTION counter="\counter"
.endm
/* Trigger refcount exception if refcount result is zero or negative. */
.macro REFCOUNT_CHECK_LE_ZERO counter:req
jz 111f
REFCOUNT_CHECK_LT_ZERO counter="\counter"
.endm
/* Trigger refcount exception unconditionally. */
.macro REFCOUNT_ERROR counter:req
jmp 111f
REFCOUNT_EXCEPTION counter="\counter"
.endm
#else /* __ASSEMBLY__ */
#include <linux/refcount.h>
#include <asm/bug.h>
@ -50,12 +15,35 @@
* central refcount exception. The fixup address for the exception points
* back to the regular execution flow in .text.
*/
#define _REFCOUNT_EXCEPTION \
".pushsection .text..refcount\n" \
"111:\tlea %[var], %%" _ASM_CX "\n" \
"112:\t" ASM_UD2 "\n" \
ASM_UNREACHABLE \
".popsection\n" \
"113:\n" \
_ASM_EXTABLE_REFCOUNT(112b, 113b)
/* Trigger refcount exception if refcount result is negative. */
#define REFCOUNT_CHECK_LT_ZERO \
"js 111f\n\t" \
_REFCOUNT_EXCEPTION
/* Trigger refcount exception if refcount result is zero or negative. */
#define REFCOUNT_CHECK_LE_ZERO \
"jz 111f\n\t" \
REFCOUNT_CHECK_LT_ZERO
/* Trigger refcount exception unconditionally. */
#define REFCOUNT_ERROR \
"jmp 111f\n\t" \
_REFCOUNT_EXCEPTION
static __always_inline void refcount_add(unsigned int i, refcount_t *r)
{
asm volatile(LOCK_PREFIX "addl %1,%0\n\t"
"REFCOUNT_CHECK_LT_ZERO counter=\"%[counter]\""
: [counter] "+m" (r->refs.counter)
REFCOUNT_CHECK_LT_ZERO
: [var] "+m" (r->refs.counter)
: "ir" (i)
: "cc", "cx");
}
@ -63,32 +51,31 @@ static __always_inline void refcount_add(unsigned int i, refcount_t *r)
static __always_inline void refcount_inc(refcount_t *r)
{
asm volatile(LOCK_PREFIX "incl %0\n\t"
"REFCOUNT_CHECK_LT_ZERO counter=\"%[counter]\""
: [counter] "+m" (r->refs.counter)
REFCOUNT_CHECK_LT_ZERO
: [var] "+m" (r->refs.counter)
: : "cc", "cx");
}
static __always_inline void refcount_dec(refcount_t *r)
{
asm volatile(LOCK_PREFIX "decl %0\n\t"
"REFCOUNT_CHECK_LE_ZERO counter=\"%[counter]\""
: [counter] "+m" (r->refs.counter)
REFCOUNT_CHECK_LE_ZERO
: [var] "+m" (r->refs.counter)
: : "cc", "cx");
}
static __always_inline __must_check
bool refcount_sub_and_test(unsigned int i, refcount_t *r)
{
return GEN_BINARY_SUFFIXED_RMWcc(LOCK_PREFIX "subl",
"REFCOUNT_CHECK_LT_ZERO counter=\"%[var]\"",
REFCOUNT_CHECK_LT_ZERO,
r->refs.counter, e, "er", i, "cx");
}
static __always_inline __must_check bool refcount_dec_and_test(refcount_t *r)
{
return GEN_UNARY_SUFFIXED_RMWcc(LOCK_PREFIX "decl",
"REFCOUNT_CHECK_LT_ZERO counter=\"%[var]\"",
REFCOUNT_CHECK_LT_ZERO,
r->refs.counter, e, "cx");
}
@ -106,8 +93,8 @@ bool refcount_add_not_zero(unsigned int i, refcount_t *r)
/* Did we try to increment from/to an undesirable state? */
if (unlikely(c < 0 || c == INT_MAX || result < c)) {
asm volatile("REFCOUNT_ERROR counter=\"%[counter]\""
: : [counter] "m" (r->refs.counter)
asm volatile(REFCOUNT_ERROR
: : [var] "m" (r->refs.counter)
: "cc", "cx");
break;
}
@ -122,6 +109,4 @@ static __always_inline __must_check bool refcount_inc_not_zero(refcount_t *r)
return refcount_add_not_zero(1, r);
}
#endif /* __ASSEMBLY__ */
#endif

4
arch/x86/kernel/cpu/intel_rdt_ctrlmondata.c
View File

@ -23,6 +23,7 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/cpu.h>
#include <linux/kernfs.h>
#include <linux/seq_file.h>
#include <linux/slab.h>
@ -310,9 +311,11 @@ ssize_t rdtgroup_schemata_write(struct kernfs_open_file *of,
return -EINVAL;
buf[nbytes - 1] = '\0';
cpus_read_lock();
rdtgrp = rdtgroup_kn_lock_live(of->kn);
if (!rdtgrp) {
rdtgroup_kn_unlock(of->kn);
cpus_read_unlock();
return -ENOENT;
}
rdt_last_cmd_clear();
@ -367,6 +370,7 @@ ssize_t rdtgroup_schemata_write(struct kernfs_open_file *of,
out:
rdtgroup_kn_unlock(of->kn);
cpus_read_unlock();
return ret ?: nbytes;
}

2
arch/x86/kernel/cpu/mtrr/if.c
View File

@ -165,6 +165,8 @@ mtrr_ioctl(struct file *file, unsigned int cmd, unsigned long __arg)
struct mtrr_gentry gentry;
void __user *arg = (void __user *) __arg;
memset(&gentry, 0, sizeof(gentry));
switch (cmd) {
case MTRRIOC_ADD_ENTRY:
case MTRRIOC_SET_ENTRY:

16
arch/x86/kernel/macros.S
View File

@ -1,16 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
/*
* This file includes headers whose assembly part includes macros which are
* commonly used. The macros are precompiled into assmebly file which is later
* assembled together with each compiled file.
*/
#include <linux/compiler.h>
#include <asm/refcount.h>
#include <asm/alternative-asm.h>
#include <asm/bug.h>
#include <asm/paravirt.h>
#include <asm/asm.h>
#include <asm/cpufeature.h>
#include <asm/jump_label.h>

99
arch/x86/kernel/process_64.c
View File

@ -339,24 +339,6 @@ static unsigned long x86_fsgsbase_read_task(struct task_struct *task,
return base;
}
void x86_fsbase_write_cpu(unsigned long fsbase)
{
/*
* Set the selector to 0 as a notion, that the segment base is
* overwritten, which will be checked for skipping the segment load
* during context switch.
*/
loadseg(FS, 0);
wrmsrl(MSR_FS_BASE, fsbase);
}
void x86_gsbase_write_cpu_inactive(unsigned long gsbase)
{
/* Set the selector to 0 for the same reason as %fs above. */
loadseg(GS, 0);
wrmsrl(MSR_KERNEL_GS_BASE, gsbase);
}
unsigned long x86_fsbase_read_task(struct task_struct *task)
{
unsigned long fsbase;
@ -385,38 +367,18 @@ unsigned long x86_gsbase_read_task(struct task_struct *task)
return gsbase;
}
int x86_fsbase_write_task(struct task_struct *task, unsigned long fsbase)
void x86_fsbase_write_task(struct task_struct *task, unsigned long fsbase)
{
/*
* Not strictly needed for %fs, but do it for symmetry
* with %gs
*/
if (unlikely(fsbase >= TASK_SIZE_MAX))
return -EPERM;
WARN_ON_ONCE(task == current);
preempt_disable();
task->thread.fsbase = fsbase;
if (task == current)
x86_fsbase_write_cpu(fsbase);
task->thread.fsindex = 0;
preempt_enable();
return 0;
}
int x86_gsbase_write_task(struct task_struct *task, unsigned long gsbase)
void x86_gsbase_write_task(struct task_struct *task, unsigned long gsbase)
{
if (unlikely(gsbase >= TASK_SIZE_MAX))
return -EPERM;
WARN_ON_ONCE(task == current);
preempt_disable();
task->thread.gsbase = gsbase;
if (task == current)
x86_gsbase_write_cpu_inactive(gsbase);
task->thread.gsindex = 0;
preempt_enable();
return 0;
}
int copy_thread_tls(unsigned long clone_flags, unsigned long sp,
@ -754,11 +716,60 @@ long do_arch_prctl_64(struct task_struct *task, int option, unsigned long arg2)
switch (option) {
case ARCH_SET_GS: {
ret = x86_gsbase_write_task(task, arg2);
if (unlikely(arg2 >= TASK_SIZE_MAX))
return -EPERM;
preempt_disable();
/*
* ARCH_SET_GS has always overwritten the index
* and the base. Zero is the most sensible value
* to put in the index, and is the only value that
* makes any sense if FSGSBASE is unavailable.
*/
if (task == current) {
loadseg(GS, 0);
x86_gsbase_write_cpu_inactive(arg2);
/*
* On non-FSGSBASE systems, save_base_legacy() expects
* that we also fill in thread.gsbase.
*/
task->thread.gsbase = arg2;
} else {
task->thread.gsindex = 0;
x86_gsbase_write_task(task, arg2);
}
preempt_enable();
break;
}
case ARCH_SET_FS: {
ret = x86_fsbase_write_task(task, arg2);
/*
* Not strictly needed for %fs, but do it for symmetry
* with %gs
*/
if (unlikely(arg2 >= TASK_SIZE_MAX))
return -EPERM;
preempt_disable();
/*
* Set the selector to 0 for the same reason
* as %gs above.
*/
if (task == current) {
loadseg(FS, 0);
x86_fsbase_write_cpu(arg2);
/*
* On non-FSGSBASE systems, save_base_legacy() expects
* that we also fill in thread.fsbase.
*/
task->thread.fsbase = arg2;
} else {
task->thread.fsindex = 0;
x86_fsbase_write_task(task, arg2);
}
preempt_enable();
break;
}
case ARCH_GET_FS: {

9
arch/x86/kernel/ptrace.c
View File

@ -397,11 +397,12 @@ static int putreg(struct task_struct *child,
if (value >= TASK_SIZE_MAX)
return -EIO;
/*
* When changing the FS base, use the same
* mechanism as for do_arch_prctl_64().
* When changing the FS base, use do_arch_prctl_64()
* to set the index to zero and to set the base
* as requested.
*/
if (child->thread.fsbase != value)
return x86_fsbase_write_task(child, value);
return do_arch_prctl_64(child, ARCH_SET_FS, value);
return 0;
case offsetof(struct user_regs_struct,gs_base):
/*
@ -410,7 +411,7 @@ static int putreg(struct task_struct *child,
if (value >= TASK_SIZE_MAX)
return -EIO;
if (child->thread.gsbase != value)
return x86_gsbase_write_task(child, value);
return do_arch_prctl_64(child, ARCH_SET_GS, value);
return 0;
#endif
}

4
arch/x86/kvm/svm.c
View File

@ -2937,6 +2937,8 @@ static void nested_svm_inject_npf_exit(struct kvm_vcpu *vcpu,
static void nested_svm_init_mmu_context(struct kvm_vcpu *vcpu)
{
WARN_ON(mmu_is_nested(vcpu));
vcpu->arch.mmu = &vcpu->arch.guest_mmu;
kvm_init_shadow_mmu(vcpu);
vcpu->arch.mmu->set_cr3 = nested_svm_set_tdp_cr3;
vcpu->arch.mmu->get_cr3 = nested_svm_get_tdp_cr3;
@ -2949,6 +2951,7 @@ static void nested_svm_init_mmu_context(struct kvm_vcpu *vcpu)
static void nested_svm_uninit_mmu_context(struct kvm_vcpu *vcpu)
{
vcpu->arch.mmu = &vcpu->arch.root_mmu;
vcpu->arch.walk_mmu = &vcpu->arch.root_mmu;
}
@ -3458,7 +3461,6 @@ static void enter_svm_guest_mode(struct vcpu_svm *svm, u64 vmcb_gpa,
svm->vcpu.arch.hflags &= ~HF_HIF_MASK;
if (nested_vmcb->control.nested_ctl & SVM_NESTED_CTL_NP_ENABLE) {
kvm_mmu_unload(&svm->vcpu);
svm->nested.nested_cr3 = nested_vmcb->control.nested_cr3;
nested_svm_init_mmu_context(&svm->vcpu);
}

15
arch/x86/mm/dump_pagetables.c
View File

@ -55,10 +55,10 @@ struct addr_marker {
enum address_markers_idx {
USER_SPACE_NR = 0,
KERNEL_SPACE_NR,
LOW_KERNEL_NR,
#if defined(CONFIG_MODIFY_LDT_SYSCALL) && defined(CONFIG_X86_5LEVEL)
#ifdef CONFIG_MODIFY_LDT_SYSCALL
LDT_NR,
#endif
LOW_KERNEL_NR,
VMALLOC_START_NR,
VMEMMAP_START_NR,
#ifdef CONFIG_KASAN
@ -66,9 +66,6 @@ enum address_markers_idx {
KASAN_SHADOW_END_NR,
#endif
CPU_ENTRY_AREA_NR,
#if defined(CONFIG_MODIFY_LDT_SYSCALL) && !defined(CONFIG_X86_5LEVEL)
LDT_NR,
#endif
#ifdef CONFIG_X86_ESPFIX64
ESPFIX_START_NR,
#endif
@ -512,11 +509,11 @@ static inline bool is_hypervisor_range(int idx)
{
#ifdef CONFIG_X86_64
/*
* ffff800000000000 - ffff87ffffffffff is reserved for
* the hypervisor.
* A hole in the beginning of kernel address space reserved
* for a hypervisor.
*/
return (idx >= pgd_index(__PAGE_OFFSET) - 16) &&
(idx < pgd_index(__PAGE_OFFSET));
return (idx >= pgd_index(GUARD_HOLE_BASE_ADDR)) &&
(idx < pgd_index(GUARD_HOLE_END_ADDR));
#else
return false;
#endif

24
arch/x86/mm/pageattr.c
View File

@ -285,20 +285,16 @@ static void cpa_flush_all(unsigned long cache)
on_each_cpu(__cpa_flush_all, (void *) cache, 1);
}
static bool __cpa_flush_range(unsigned long start, int numpages, int cache)
static bool __inv_flush_all(int cache)
{
BUG_ON(irqs_disabled() && !early_boot_irqs_disabled);
WARN_ON(PAGE_ALIGN(start) != start);
if (cache && !static_cpu_has(X86_FEATURE_CLFLUSH)) {
cpa_flush_all(cache);
return true;
}
flush_tlb_kernel_range(start, start + PAGE_SIZE * numpages);
return !cache;
return false;
}
static void cpa_flush_range(unsigned long start, int numpages, int cache)
@ -306,7 +302,14 @@ static void cpa_flush_range(unsigned long start, int numpages, int cache)
unsigned int i, level;
unsigned long addr;
if (__cpa_flush_range(start, numpages, cache))
WARN_ON(PAGE_ALIGN(start) != start);
if (__inv_flush_all(cache))
return;
flush_tlb_kernel_range(start, start + PAGE_SIZE * numpages);
if (!cache)
return;
/*
@ -332,7 +335,12 @@ static void cpa_flush_array(unsigned long baddr, unsigned long *start,
{
unsigned int i, level;
if (__cpa_flush_range(baddr, numpages, cache))
if (__inv_flush_all(cache))
return;
flush_tlb_all();
if (!cache)
return;
/*

13
arch/x86/mm/pat.c
View File

@ -519,8 +519,13 @@ static u64 sanitize_phys(u64 address)
* for a "decoy" virtual address (bit 63 clear) passed to
* set_memory_X(). __pa() on a "decoy" address results in a
* physical address with bit 63 set.
*
* Decoy addresses are not present for 32-bit builds, see
* set_mce_nospec().
*/
return address & __PHYSICAL_MASK;
if (IS_ENABLED(CONFIG_X86_64))
return address & __PHYSICAL_MASK;
return address;
}
/*
@ -546,7 +551,11 @@ int reserve_memtype(u64 start, u64 end, enum page_cache_mode req_type,
start = sanitize_phys(start);
end = sanitize_phys(end);
BUG_ON(start >= end); /* end is exclusive */
if (start >= end) {
WARN(1, "%s failed: [mem %#010Lx-%#010Lx], req %s\n", __func__,
start, end - 1, cattr_name(req_type));
return -EINVAL;
}
if (!pat_enabled()) {
/* This is identical to page table setting without PAT */

11
arch/x86/xen/mmu_pv.c
View File

@ -648,19 +648,20 @@ static int __xen_pgd_walk(struct mm_struct *mm, pgd_t *pgd,
unsigned long limit)
{
int i, nr, flush = 0;
unsigned hole_low, hole_high;
unsigned hole_low = 0, hole_high = 0;
/* The limit is the last byte to be touched */
limit--;
BUG_ON(limit >= FIXADDR_TOP);
#ifdef CONFIG_X86_64
/*
* 64-bit has a great big hole in the middle of the address
* space, which contains the Xen mappings. On 32-bit these
* will end up making a zero-sized hole and so is a no-op.
* space, which contains the Xen mappings.
*/
hole_low = pgd_index(USER_LIMIT);
hole_high = pgd_index(PAGE_OFFSET);
hole_low = pgd_index(GUARD_HOLE_BASE_ADDR);
hole_high = pgd_index(GUARD_HOLE_END_ADDR);
#endif
nr = pgd_index(limit) + 1;
for (i = 0; i < nr; i++) {

12
drivers/gpio/gpio-max7301.c
View File

@ -25,7 +25,7 @@ static int max7301_spi_write(struct device *dev, unsigned int reg,
struct spi_device *spi = to_spi_device(dev);
u16 word = ((reg & 0x7F) << 8) | (val & 0xFF);
return spi_write(spi, (const u8 *)&word, sizeof(word));
return spi_write_then_read(spi, &word, sizeof(word), NULL, 0);
}
/* A read from the MAX7301 means two transfers; here, one message each */
@ -37,14 +37,8 @@ static int max7301_spi_read(struct device *dev, unsigned int reg)
struct spi_device *spi = to_spi_device(dev);
word = 0x8000 | (reg << 8);
ret = spi_write(spi, (const u8 *)&word, sizeof(word));
if (ret)
return ret;
/*
* This relies on the fact, that a transfer with NULL tx_buf shifts out
* zero bytes (=NOOP for MAX7301)
*/
ret = spi_read(spi, (u8 *)&word, sizeof(word));
ret = spi_write_then_read(spi, &word, sizeof(word), &word,
sizeof(word));
if (ret)
return ret;
return word & 0xff;

6
drivers/gpio/gpio-mvebu.c
View File

@ -773,9 +773,6 @@ static int mvebu_pwm_probe(struct platform_device *pdev,
"marvell,armada-370-gpio"))
return 0;
if (IS_ERR(mvchip->clk))
return PTR_ERR(mvchip->clk);
/*
* There are only two sets of PWM configuration registers for
* all the GPIO lines on those SoCs which this driver reserves
@ -786,6 +783,9 @@ static int mvebu_pwm_probe(struct platform_device *pdev,
if (!res)
return 0;
if (IS_ERR(mvchip->clk))
return PTR_ERR(mvchip->clk);
/*
* Use set A for lines of GPIO chip with id 0, B for GPIO chip
* with id 1. Don't allow further GPIO chips to be used for PWM.

64
drivers/gpio/gpio-omap.c
View File

@ -32,7 +32,6 @@
#define OMAP4_GPIO_DEBOUNCINGTIME_MASK 0xFF
#define OMAP_GPIO_QUIRK_IDLE_REMOVE_TRIGGER BIT(2)
#define OMAP_GPIO_QUIRK_DEFERRED_WKUP_EN BIT(1)
struct gpio_regs {
u32 irqenable1;
@ -379,18 +378,9 @@ static inline void omap_set_gpio_trigger(struct gpio_bank *bank, int gpio,
readl_relaxed(bank->base + bank->regs->fallingdetect);
if (likely(!(bank->non_wakeup_gpios & gpio_bit))) {
/* Defer wkup_en register update until we idle? */
if (bank->quirks & OMAP_GPIO_QUIRK_DEFERRED_WKUP_EN) {
if (trigger)
bank->context.wake_en |= gpio_bit;
else
bank->context.wake_en &= ~gpio_bit;
} else {
omap_gpio_rmw(base, bank->regs->wkup_en, gpio_bit,
trigger != 0);
bank->context.wake_en =
readl_relaxed(bank->base + bank->regs->wkup_en);
}
omap_gpio_rmw(base, bank->regs->wkup_en, gpio_bit, trigger != 0);
bank->context.wake_en =
readl_relaxed(bank->base + bank->regs->wkup_en);
}
/* This part needs to be executed always for OMAP{34xx, 44xx} */
@ -942,44 +932,6 @@ omap2_gpio_disable_level_quirk(struct gpio_bank *bank)
bank->base + bank->regs->risingdetect);
}
/*
* On omap4 and later SoC variants a level interrupt with wkup_en
* enabled blocks the GPIO functional clock from idling until the GPIO
* instance has been reset. To avoid that, we must set wkup_en only for
* idle for level interrupts, and clear level registers for the duration
* of idle. The level interrupts will be still there on wakeup by their
* nature.
*/
static void __maybe_unused
omap4_gpio_enable_level_quirk(struct gpio_bank *bank)
{
/* Update wake register for idle, edge bits might be already set */
writel_relaxed(bank->context.wake_en,
bank->base + bank->regs->wkup_en);
/* Clear level registers for idle */
writel_relaxed(0, bank->base + bank->regs->leveldetect0);
writel_relaxed(0, bank->base + bank->regs->leveldetect1);
}
static void __maybe_unused
omap4_gpio_disable_level_quirk(struct gpio_bank *bank)
{
/* Restore level registers after idle */
writel_relaxed(bank->context.leveldetect0,
bank->base + bank->regs->leveldetect0);
writel_relaxed(bank->context.leveldetect1,
bank->base + bank->regs->leveldetect1);
/* Clear saved wkup_en for level, it will be set for next idle again */
bank->context.wake_en &= ~(bank->context.leveldetect0 |
bank->context.leveldetect1);
/* Update wake with only edge configuration */
writel_relaxed(bank->context.wake_en,
bank->base + bank->regs->wkup_en);
}
/*---------------------------------------------------------------------*/
static int omap_mpuio_suspend_noirq(struct device *dev)
@ -1412,12 +1364,7 @@ static int omap_gpio_probe(struct platform_device *pdev)
omap_set_gpio_dataout_mask_multiple;
}
if (bank->quirks & OMAP_GPIO_QUIRK_DEFERRED_WKUP_EN) {
bank->funcs.idle_enable_level_quirk =
omap4_gpio_enable_level_quirk;
bank->funcs.idle_disable_level_quirk =
omap4_gpio_disable_level_quirk;
} else if (bank->quirks & OMAP_GPIO_QUIRK_IDLE_REMOVE_TRIGGER) {
if (bank->quirks & OMAP_GPIO_QUIRK_IDLE_REMOVE_TRIGGER) {
bank->funcs.idle_enable_level_quirk =
omap2_gpio_enable_level_quirk;
bank->funcs.idle_disable_level_quirk =
@ -1806,8 +1753,7 @@ static const struct omap_gpio_platform_data omap4_pdata = {
.regs = &omap4_gpio_regs,
.bank_width = 32,
.dbck_flag = true,
.quirks = OMAP_GPIO_QUIRK_IDLE_REMOVE_TRIGGER |
OMAP_GPIO_QUIRK_DEFERRED_WKUP_EN,
.quirks = OMAP_GPIO_QUIRK_IDLE_REMOVE_TRIGGER,
};
static const struct of_device_id omap_gpio_match[] = {

164
drivers/gpio/gpiolib-acpi.c
View File

@ -19,11 +19,28 @@
#include "gpiolib.h"
/**
* struct acpi_gpio_event - ACPI GPIO event handler data
*
* @node: list-entry of the events list of the struct acpi_gpio_chip
* @handle: handle of ACPI method to execute when the IRQ triggers
* @handler: irq_handler to pass to request_irq when requesting the IRQ
* @pin: GPIO pin number on the gpio_chip
* @irq: Linux IRQ number for the event, for request_ / free_irq
* @irqflags: flags to pass to request_irq when requesting the IRQ
* @irq_is_wake: If the ACPI flags indicate the IRQ is a wakeup source
* @is_requested: True if request_irq has been done
* @desc: gpio_desc for the GPIO pin for this event
*/
struct acpi_gpio_event {
struct list_head node;
acpi_handle handle;
irq_handler_t handler;
unsigned int pin;
unsigned int irq;
unsigned long irqflags;
bool irq_is_wake;
bool irq_requested;
struct gpio_desc *desc;
};
@ -49,10 +66,10 @@ struct acpi_gpio_chip {
/*
* For gpiochips which call acpi_gpiochip_request_interrupts() before late_init
* (so builtin drivers) we register the ACPI GpioInt event handlers from a
* (so builtin drivers) we register the ACPI GpioInt IRQ handlers from a
* late_initcall_sync handler, so that other builtin drivers can register their
* OpRegions before the event handlers can run. This list contains gpiochips
* for which the acpi_gpiochip_request_interrupts() has been deferred.
* for which the acpi_gpiochip_request_irqs() call has been deferred.
*/
static DEFINE_MUTEX(acpi_gpio_deferred_req_irqs_lock);
static LIST_HEAD(acpi_gpio_deferred_req_irqs_list);
@ -133,8 +150,42 @@ bool acpi_gpio_get_irq_resource(struct acpi_resource *ares,
}
EXPORT_SYMBOL_GPL(acpi_gpio_get_irq_resource);
static acpi_status acpi_gpiochip_request_interrupt(struct acpi_resource *ares,
void *context)
static void acpi_gpiochip_request_irq(struct acpi_gpio_chip *acpi_gpio,
struct acpi_gpio_event *event)
{
int ret, value;
ret = request_threaded_irq(event->irq, NULL, event->handler,
event->irqflags, "ACPI:Event", event);
if (ret) {
dev_err(acpi_gpio->chip->parent,
"Failed to setup interrupt handler for %d\n",
event->irq);
return;
}
if (event->irq_is_wake)
enable_irq_wake(event->irq);
event->irq_requested = true;
/* Make sure we trigger the initial state of edge-triggered IRQs */
value = gpiod_get_raw_value_cansleep(event->desc);
if (((event->irqflags & IRQF_TRIGGER_RISING) && value == 1) ||
((event->irqflags & IRQF_TRIGGER_FALLING) && value == 0))
event->handler(event->irq, event);
}
static void acpi_gpiochip_request_irqs(struct acpi_gpio_chip *acpi_gpio)
{
struct acpi_gpio_event *event;
list_for_each_entry(event, &acpi_gpio->events, node)
acpi_gpiochip_request_irq(acpi_gpio, event);
}
static acpi_status acpi_gpiochip_alloc_event(struct acpi_resource *ares,
void *context)
{
struct acpi_gpio_chip *acpi_gpio = context;
struct gpio_chip *chip = acpi_gpio->chip;
@ -143,8 +194,7 @@ static acpi_status acpi_gpiochip_request_interrupt(struct acpi_resource *ares,
struct acpi_gpio_event *event;
irq_handler_t handler = NULL;
struct gpio_desc *desc;
unsigned long irqflags;
int ret, pin, irq, value;
int ret, pin, irq;
if (!acpi_gpio_get_irq_resource(ares, &agpio))
return AE_OK;
@ -175,8 +225,6 @@ static acpi_status acpi_gpiochip_request_interrupt(struct acpi_resource *ares,
gpiod_direction_input(desc);
value = gpiod_get_value_cansleep(desc);
ret = gpiochip_lock_as_irq(chip, pin);
if (ret) {
dev_err(chip->parent, "Failed to lock GPIO as interrupt\n");
@ -189,64 +237,42 @@ static acpi_status acpi_gpiochip_request_interrupt(struct acpi_resource *ares,
goto fail_unlock_irq;
}
irqflags = IRQF_ONESHOT;
if (agpio->triggering == ACPI_LEVEL_SENSITIVE) {
if (agpio->polarity == ACPI_ACTIVE_HIGH)
irqflags |= IRQF_TRIGGER_HIGH;
else
irqflags |= IRQF_TRIGGER_LOW;
} else {
switch (agpio->polarity) {
case ACPI_ACTIVE_HIGH:
irqflags |= IRQF_TRIGGER_RISING;
break;
case ACPI_ACTIVE_LOW:
irqflags |= IRQF_TRIGGER_FALLING;
break;
default:
irqflags |= IRQF_TRIGGER_RISING |
IRQF_TRIGGER_FALLING;
break;
}
}
event = kzalloc(sizeof(*event), GFP_KERNEL);
if (!event)
goto fail_unlock_irq;
event->irqflags = IRQF_ONESHOT;
if (agpio->triggering == ACPI_LEVEL_SENSITIVE) {
if (agpio->polarity == ACPI_ACTIVE_HIGH)
event->irqflags |= IRQF_TRIGGER_HIGH;
else
event->irqflags |= IRQF_TRIGGER_LOW;
} else {
switch (agpio->polarity) {
case ACPI_ACTIVE_HIGH:
event->irqflags |= IRQF_TRIGGER_RISING;
break;
case ACPI_ACTIVE_LOW:
event->irqflags |= IRQF_TRIGGER_FALLING;
break;
default:
event->irqflags |= IRQF_TRIGGER_RISING |
IRQF_TRIGGER_FALLING;
break;
}
}
event->handle = evt_handle;
event->handler = handler;
event->irq = irq;
event->irq_is_wake = agpio->wake_capable == ACPI_WAKE_CAPABLE;
event->pin = pin;
event->desc = desc;
ret = request_threaded_irq(event->irq, NULL, handler, irqflags,
"ACPI:Event", event);
if (ret) {
dev_err(chip->parent,
"Failed to setup interrupt handler for %d\n",
event->irq);
goto fail_free_event;
}
if (agpio->wake_capable == ACPI_WAKE_CAPABLE)
enable_irq_wake(irq);
list_add_tail(&event->node, &acpi_gpio->events);
/*
* Make sure we trigger the initial state of the IRQ when using RISING
* or FALLING. Note we run the handlers on late_init, the AML code
* may refer to OperationRegions from other (builtin) drivers which
* may be probed after us.
*/
if (((irqflags & IRQF_TRIGGER_RISING) && value == 1) ||
((irqflags & IRQF_TRIGGER_FALLING) && value == 0))
handler(event->irq, event);
return AE_OK;
fail_free_event:
kfree(event);
fail_unlock_irq:
gpiochip_unlock_as_irq(chip, pin);
fail_free_desc:
@ -283,6 +309,9 @@ void acpi_gpiochip_request_interrupts(struct gpio_chip *chip)
if (ACPI_FAILURE(status))
return;
acpi_walk_resources(handle, "_AEI",
acpi_gpiochip_alloc_event, acpi_gpio);
mutex_lock(&acpi_gpio_deferred_req_irqs_lock);
defer = !acpi_gpio_deferred_req_irqs_done;
if (defer)
@ -293,8 +322,7 @@ void acpi_gpiochip_request_interrupts(struct gpio_chip *chip)
if (defer)
return;
acpi_walk_resources(handle, "_AEI",
acpi_gpiochip_request_interrupt, acpi_gpio);
acpi_gpiochip_request_irqs(acpi_gpio);
}
EXPORT_SYMBOL_GPL(acpi_gpiochip_request_interrupts);
@ -331,10 +359,13 @@ void acpi_gpiochip_free_interrupts(struct gpio_chip *chip)
list_for_each_entry_safe_reverse(event, ep, &acpi_gpio->events, node) {
struct gpio_desc *desc;
if (irqd_is_wakeup_set(irq_get_irq_data(event->irq)))
disable_irq_wake(event->irq);
if (event->irq_requested) {
if (event->irq_is_wake)
disable_irq_wake(event->irq);
free_irq(event->irq, event);
}
free_irq(event->irq, event);
desc = event->desc;
if (WARN_ON(IS_ERR(desc)))
continue;
@ -1200,23 +1231,16 @@ bool acpi_can_fallback_to_crs(struct acpi_device *adev, const char *con_id)
return con_id == NULL;
}
/* Run deferred acpi_gpiochip_request_interrupts() */
static int acpi_gpio_handle_deferred_request_interrupts(void)
/* Run deferred acpi_gpiochip_request_irqs() */
static int acpi_gpio_handle_deferred_request_irqs(void)
{
struct acpi_gpio_chip *acpi_gpio, *tmp;
mutex_lock(&acpi_gpio_deferred_req_irqs_lock);
list_for_each_entry_safe(acpi_gpio, tmp,
&acpi_gpio_deferred_req_irqs_list,
deferred_req_irqs_list_entry) {
acpi_handle handle;
handle = ACPI_HANDLE(acpi_gpio->chip->parent);
acpi_walk_resources(handle, "_AEI",
acpi_gpiochip_request_interrupt, acpi_gpio);
list_del_init(&acpi_gpio->deferred_req_irqs_list_entry);
}
deferred_req_irqs_list_entry)
acpi_gpiochip_request_irqs(acpi_gpio);
acpi_gpio_deferred_req_irqs_done = true;
mutex_unlock(&acpi_gpio_deferred_req_irqs_lock);
@ -1224,4 +1248,4 @@ static int acpi_gpio_handle_deferred_request_interrupts(void)
return 0;
}
/* We must use _sync so that this runs after the first deferred_probe run */
late_initcall_sync(acpi_gpio_handle_deferred_request_interrupts);
late_initcall_sync(acpi_gpio_handle_deferred_request_irqs);

10
drivers/gpu/drm/drm_ioctl.c
View File

@ -37,6 +37,7 @@
#include <linux/pci.h>
#include <linux/export.h>
#include <linux/nospec.h>
/**
* DOC: getunique and setversion story
@ -800,13 +801,17 @@ long drm_ioctl(struct file *filp,
if (is_driver_ioctl) {
/* driver ioctl */
if (nr - DRM_COMMAND_BASE >= dev->driver->num_ioctls)
unsigned int index = nr - DRM_COMMAND_BASE;
if (index >= dev->driver->num_ioctls)
goto err_i1;
ioctl = &dev->driver->ioctls[nr - DRM_COMMAND_BASE];
index = array_index_nospec(index, dev->driver->num_ioctls);
ioctl = &dev->driver->ioctls[index];
} else {
/* core ioctl */
if (nr >= DRM_CORE_IOCTL_COUNT)
goto err_i1;
nr = array_index_nospec(nr, DRM_CORE_IOCTL_COUNT);
ioctl = &drm_ioctls[nr];
}
@ -888,6 +893,7 @@ bool drm_ioctl_flags(unsigned int nr, unsigned int *flags)
if (nr >= DRM_CORE_IOCTL_COUNT)
return false;
nr = array_index_nospec(nr, DRM_CORE_IOCTL_COUNT);
*flags = drm_ioctls[nr].flags;
return true;

2
drivers/i2c/busses/i2c-nvidia-gpu.c
View File

@ -342,7 +342,7 @@ static void gpu_i2c_remove(struct pci_dev *pdev)
pci_free_irq_vectors(pdev);
}
static int gpu_i2c_resume(struct device *dev)
static __maybe_unused int gpu_i2c_resume(struct device *dev)
{
struct gpu_i2c_dev *i2cd = dev_get_drvdata(dev);

16
drivers/input/keyboard/omap4-keypad.c
View File

@ -126,12 +126,8 @@ static irqreturn_t omap4_keypad_irq_handler(int irq, void *dev_id)
{
struct omap4_keypad *keypad_data = dev_id;
if (kbd_read_irqreg(keypad_data, OMAP4_KBD_IRQSTATUS)) {
/* Disable interrupts */
kbd_write_irqreg(keypad_data, OMAP4_KBD_IRQENABLE,
OMAP4_VAL_IRQDISABLE);
if (kbd_read_irqreg(keypad_data, OMAP4_KBD_IRQSTATUS))
return IRQ_WAKE_THREAD;
}
return IRQ_NONE;
}
@ -173,11 +169,6 @@ static irqreturn_t omap4_keypad_irq_thread_fn(int irq, void *dev_id)
kbd_write_irqreg(keypad_data, OMAP4_KBD_IRQSTATUS,
kbd_read_irqreg(keypad_data, OMAP4_KBD_IRQSTATUS));
/* enable interrupts */
kbd_write_irqreg(keypad_data, OMAP4_KBD_IRQENABLE,
OMAP4_DEF_IRQENABLE_EVENTEN |
OMAP4_DEF_IRQENABLE_LONGKEY);
return IRQ_HANDLED;
}
@ -214,9 +205,10 @@ static void omap4_keypad_close(struct input_dev *input)
disable_irq(keypad_data->irq);
/* Disable interrupts */
/* Disable interrupts and wake-up events */
kbd_write_irqreg(keypad_data, OMAP4_KBD_IRQENABLE,
OMAP4_VAL_IRQDISABLE);
kbd_writel(keypad_data, OMAP4_KBD_WAKEUPENABLE, 0);
/* clear pending interrupts */
kbd_write_irqreg(keypad_data, OMAP4_KBD_IRQSTATUS,
@ -365,7 +357,7 @@ static int omap4_keypad_probe(struct platform_device *pdev)
}
error = request_threaded_irq(keypad_data->irq, omap4_keypad_irq_handler,
omap4_keypad_irq_thread_fn, 0,
omap4_keypad_irq_thread_fn, IRQF_ONESHOT,
"omap4-keypad", keypad_data);
if (error) {
dev_err(&pdev->dev, "failed to register interrupt\n");

18
drivers/input/mouse/elantech.c
View File

@ -1767,6 +1767,18 @@ static int elantech_smbus = IS_ENABLED(CONFIG_MOUSE_ELAN_I2C_SMBUS) ?
module_param_named(elantech_smbus, elantech_smbus, int, 0644);
MODULE_PARM_DESC(elantech_smbus, "Use a secondary bus for the Elantech device.");
static const char * const i2c_blacklist_pnp_ids[] = {
/*
* These are known to not be working properly as bits are missing
* in elan_i2c.
*/
"LEN2131", /* ThinkPad P52 w/ NFC */
"LEN2132", /* ThinkPad P52 */
"LEN2133", /* ThinkPad P72 w/ NFC */
"LEN2134", /* ThinkPad P72 */
NULL
};
static int elantech_create_smbus(struct psmouse *psmouse,
struct elantech_device_info *info,
bool leave_breadcrumbs)
@ -1802,10 +1814,12 @@ static int elantech_setup_smbus(struct psmouse *psmouse,
if (elantech_smbus == ELANTECH_SMBUS_NOT_SET) {
/*
* New ICs are enabled by default.
* New ICs are enabled by default, unless mentioned in
* i2c_blacklist_pnp_ids.
* Old ICs are up to the user to decide.
*/
if (!ETP_NEW_IC_SMBUS_HOST_NOTIFY(info->fw_version))
if (!ETP_NEW_IC_SMBUS_HOST_NOTIFY(info->fw_version) ||
psmouse_matches_pnp_id(psmouse, i2c_blacklist_pnp_ids))
return -ENXIO;
}

2
drivers/input/mouse/synaptics.c
View File

@ -171,6 +171,7 @@ static const char * const smbus_pnp_ids[] = {
"LEN0046", /* X250 */
"LEN004a", /* W541 */
"LEN005b", /* P50 */
"LEN005e", /* T560 */
"LEN0071", /* T480 */
"LEN0072", /* X1 Carbon Gen 5 (2017) - Elan/ALPS trackpoint */
"LEN0073", /* X1 Carbon G5 (Elantech) */
@ -178,6 +179,7 @@ static const char * const smbus_pnp_ids[] = {
"LEN0096", /* X280 */
"LEN0097", /* X280 -> ALPS trackpoint */
"LEN200f", /* T450s */
"SYN3052", /* HP EliteBook 840 G4 */
"SYN3221", /* HP 15-ay000 */
NULL
};

2
drivers/mtd/ubi/build.c
View File

@ -1101,10 +1101,10 @@ int ubi_detach_mtd_dev(int ubi_num, int anyway)
ubi_wl_close(ubi);
ubi_free_internal_volumes(ubi);
vfree(ubi->vtbl);
put_mtd_device(ubi->mtd);
vfree(ubi->peb_buf);
vfree(ubi->fm_buf);
ubi_msg(ubi, "mtd%d is detached", ubi->mtd->index);
put_mtd_device(ubi->mtd);
put_device(&ubi->dev);
return 0;
}

2
drivers/mtd/ubi/kapi.c
View File

@ -227,9 +227,9 @@ out_unlock:
out_free:
kfree(desc);
out_put_ubi:
ubi_put_device(ubi);
ubi_err(ubi, "cannot open device %d, volume %d, error %d",
ubi_num, vol_id, err);
ubi_put_device(ubi);
return ERR_PTR(err);
}
EXPORT_SYMBOL_GPL(ubi_open_volume);

2
drivers/net/ethernet/mscc/ocelot.c
View File

@ -746,7 +746,7 @@ static int ocelot_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
}
return ocelot_mact_learn(ocelot, port->chip_port, addr, vid,
ENTRYTYPE_NORMAL);
ENTRYTYPE_LOCKED);
}
static int ocelot_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],

3
drivers/net/ethernet/qlogic/netxen/netxen_nic_init.c
View File

@ -1125,7 +1125,8 @@ netxen_validate_firmware(struct netxen_adapter *adapter)
return -EINVAL;
}
val = nx_get_bios_version(adapter);
netxen_rom_fast_read(adapter, NX_BIOS_VERSION_OFFSET, (int *)&bios);
if (netxen_rom_fast_read(adapter, NX_BIOS_VERSION_OFFSET, (int *)&bios))
return -EIO;
if ((__force u32)val != bios) {
dev_err(&pdev->dev, "%s: firmware bios is incompatible\n",
fw_name[fw_type]);

16
drivers/net/usb/qmi_wwan.c
View File

@ -151,17 +151,18 @@ static bool qmimux_has_slaves(struct usbnet *dev)
static int qmimux_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
{
unsigned int len, offset = sizeof(struct qmimux_hdr);
unsigned int len, offset = 0;
struct qmimux_hdr *hdr;
struct net_device *net;
struct sk_buff *skbn;
u8 qmimux_hdr_sz = sizeof(*hdr);
while (offset < skb->len) {
hdr = (struct qmimux_hdr *)skb->data;
while (offset + qmimux_hdr_sz < skb->len) {
hdr = (struct qmimux_hdr *)(skb->data + offset);
len = be16_to_cpu(hdr->pkt_len);
/* drop the packet, bogus length */
if (offset + len > skb->len)
if (offset + len + qmimux_hdr_sz > skb->len)
return 0;
/* control packet, we do not know what to do */
@ -176,7 +177,7 @@ static int qmimux_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
return 0;
skbn->dev = net;
switch (skb->data[offset] & 0xf0) {
switch (skb->data[offset + qmimux_hdr_sz] & 0xf0) {
case 0x40:
skbn->protocol = htons(ETH_P_IP);
break;
@ -188,12 +189,12 @@ static int qmimux_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
goto skip;
}
skb_put_data(skbn, skb->data + offset, len);
skb_put_data(skbn, skb->data + offset + qmimux_hdr_sz, len);
if (netif_rx(skbn) != NET_RX_SUCCESS)
return 0;
skip:
offset += len + sizeof(struct qmimux_hdr);
offset += len + qmimux_hdr_sz;
}
return 1;
}
@ -1265,6 +1266,7 @@ static const struct usb_device_id products[] = {
{QMI_QUIRK_SET_DTR(0x2c7c, 0x0121, 4)}, /* Quectel EC21 Mini PCIe */
{QMI_QUIRK_SET_DTR(0x2c7c, 0x0191, 4)}, /* Quectel EG91 */
{QMI_FIXED_INTF(0x2c7c, 0x0296, 4)}, /* Quectel BG96 */
{QMI_QUIRK_SET_DTR(0x2cb7, 0x0104, 4)}, /* Fibocom NL678 series */
/* 4. Gobi 1000 devices */
{QMI_GOBI1K_DEVICE(0x05c6, 0x9212)}, /* Acer Gobi Modem Device */

31
drivers/tty/serial/sunsu.c
View File

@ -1394,22 +1394,43 @@ static inline struct console *SUNSU_CONSOLE(void)
static enum su_type su_get_type(struct device_node *dp)
{
struct device_node *ap = of_find_node_by_path("/aliases");
enum su_type rc = SU_PORT_PORT;
if (ap) {
const char *keyb = of_get_property(ap, "keyboard", NULL);
const char *ms = of_get_property(ap, "mouse", NULL);
struct device_node *match;
if (keyb) {
if (dp == of_find_node_by_path(keyb))
return SU_PORT_KBD;
match = of_find_node_by_path(keyb);
/*
* The pointer is used as an identifier not
* as a pointer, we can drop the refcount on
* the of__node immediately after getting it.
*/
of_node_put(match);
if (dp == match) {
rc = SU_PORT_KBD;
goto out;
}
}
if (ms) {
if (dp == of_find_node_by_path(ms))
return SU_PORT_MS;
match = of_find_node_by_path(ms);
of_node_put(match);
if (dp == match) {
rc = SU_PORT_MS;
goto out;
}
}
}
return SU_PORT_PORT;
out:
of_node_put(ap);
return rc;
}
static int su_probe(struct platform_device *op)

16
fs/cifs/smb2inode.c
View File

@ -97,7 +97,7 @@ smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
if (rc)
goto finished;
smb2_set_next_command(server, &rqst[num_rqst++]);
smb2_set_next_command(server, &rqst[num_rqst++], 0);
/* Operation */
switch (command) {
@ -111,7 +111,7 @@ smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
SMB2_O_INFO_FILE, 0,
sizeof(struct smb2_file_all_info) +
PATH_MAX * 2, 0, NULL);
smb2_set_next_command(server, &rqst[num_rqst]);
smb2_set_next_command(server, &rqst[num_rqst], 0);
smb2_set_related(&rqst[num_rqst++]);
break;
case SMB2_OP_DELETE:
@ -127,14 +127,14 @@ smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
rqst[num_rqst].rq_iov = si_iov;
rqst[num_rqst].rq_nvec = 1;
size[0] = 8;
size[0] = 1; /* sizeof __u8 See MS-FSCC section 2.4.11 */
data[0] = &delete_pending[0];
rc = SMB2_set_info_init(tcon, &rqst[num_rqst], COMPOUND_FID,
COMPOUND_FID, current->tgid,
FILE_DISPOSITION_INFORMATION,
SMB2_O_INFO_FILE, 0, data, size);
smb2_set_next_command(server, &rqst[num_rqst]);
smb2_set_next_command(server, &rqst[num_rqst], 1);
smb2_set_related(&rqst[num_rqst++]);
break;
case SMB2_OP_SET_EOF:
@ -149,7 +149,7 @@ smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
COMPOUND_FID, current->tgid,
FILE_END_OF_FILE_INFORMATION,
SMB2_O_INFO_FILE, 0, data, size);
smb2_set_next_command(server, &rqst[num_rqst]);
smb2_set_next_command(server, &rqst[num_rqst], 0);
smb2_set_related(&rqst[num_rqst++]);
break;
case SMB2_OP_SET_INFO:
@ -165,7 +165,7 @@ smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
COMPOUND_FID, current->tgid,
FILE_BASIC_INFORMATION,
SMB2_O_INFO_FILE, 0, data, size);
smb2_set_next_command(server, &rqst[num_rqst]);
smb2_set_next_command(server, &rqst[num_rqst], 0);
smb2_set_related(&rqst[num_rqst++]);
break;
case SMB2_OP_RENAME:
@ -189,7 +189,7 @@ smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
COMPOUND_FID, current->tgid,
FILE_RENAME_INFORMATION,
SMB2_O_INFO_FILE, 0, data, size);
smb2_set_next_command(server, &rqst[num_rqst]);
smb2_set_next_command(server, &rqst[num_rqst], 0);
smb2_set_related(&rqst[num_rqst++]);
break;
case SMB2_OP_HARDLINK:
@ -213,7 +213,7 @@ smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
COMPOUND_FID, current->tgid,
FILE_LINK_INFORMATION,
SMB2_O_INFO_FILE, 0, data, size);
smb2_set_next_command(server, &rqst[num_rqst]);
smb2_set_next_command(server, &rqst[num_rqst], 0);
smb2_set_related(&rqst[num_rqst++]);
break;
default:

23
fs/cifs/smb2ops.c
View File

@ -1194,7 +1194,7 @@ smb2_ioctl_query_info(const unsigned int xid,
rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, path);
if (rc)
goto iqinf_exit;
smb2_set_next_command(ses->server, &rqst[0]);
smb2_set_next_command(ses->server, &rqst[0], 0);
/* Query */
memset(&qi_iov, 0, sizeof(qi_iov));
@ -1208,7 +1208,7 @@ smb2_ioctl_query_info(const unsigned int xid,
qi.output_buffer_length, buffer);
if (rc)
goto iqinf_exit;
smb2_set_next_command(ses->server, &rqst[1]);
smb2_set_next_command(ses->server, &rqst[1], 0);
smb2_set_related(&rqst[1]);
/* Close */
@ -1761,16 +1761,23 @@ smb2_set_related(struct smb_rqst *rqst)
char smb2_padding[7] = {0, 0, 0, 0, 0, 0, 0};
void
smb2_set_next_command(struct TCP_Server_Info *server, struct smb_rqst *rqst)
smb2_set_next_command(struct TCP_Server_Info *server, struct smb_rqst *rqst,
bool has_space_for_padding)
{
struct smb2_sync_hdr *shdr;
unsigned long len = smb_rqst_len(server, rqst);
/* SMB headers in a compound are 8 byte aligned. */
if (len & 7) {
rqst->rq_iov[rqst->rq_nvec].iov_base = smb2_padding;
rqst->rq_iov[rqst->rq_nvec].iov_len = 8 - (len & 7);
rqst->rq_nvec++;
if (has_space_for_padding) {
len = rqst->rq_iov[rqst->rq_nvec - 1].iov_len;
rqst->rq_iov[rqst->rq_nvec - 1].iov_len =
(len + 7) & ~7;
} else {
rqst->rq_iov[rqst->rq_nvec].iov_base = smb2_padding;
rqst->rq_iov[rqst->rq_nvec].iov_len = 8 - (len & 7);
rqst->rq_nvec++;
}
len = smb_rqst_len(server, rqst);
}
@ -1820,7 +1827,7 @@ smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, &srch_path);
if (rc)
goto qfs_exit;
smb2_set_next_command(server, &rqst[0]);
smb2_set_next_command(server, &rqst[0], 0);
memset(&qi_iov, 0, sizeof(qi_iov));
rqst[1].rq_iov = qi_iov;
@ -1833,7 +1840,7 @@ smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
NULL);
if (rc)
goto qfs_exit;
smb2_set_next_command(server, &rqst[1]);
smb2_set_next_command(server, &rqst[1], 0);
smb2_set_related(&rqst[1]);
memset(&close_iov, 0, sizeof(close_iov));

3
fs/cifs/smb2proto.h
View File

@ -117,7 +117,8 @@ extern int smb3_crypto_aead_allocate(struct TCP_Server_Info *server);
extern unsigned long smb_rqst_len(struct TCP_Server_Info *server,
struct smb_rqst *rqst);
extern void smb2_set_next_command(struct TCP_Server_Info *server,
struct smb_rqst *rqst);
struct smb_rqst *rqst,
bool has_space_for_padding);
extern void smb2_set_related(struct smb_rqst *rqst);
/*

16
fs/ubifs/Kconfig
View File

@ -12,9 +12,10 @@ config UBIFS_FS
help
UBIFS is a file system for flash devices which works on top of UBI.
if UBIFS_FS
config UBIFS_FS_ADVANCED_COMPR
bool "Advanced compression options"
depends on UBIFS_FS
help
This option allows to explicitly choose which compressions, if any,
are enabled in UBIFS. Removing compressors means inability to read
@ -24,7 +25,6 @@ config UBIFS_FS_ADVANCED_COMPR
config UBIFS_FS_LZO
bool "LZO compression support" if UBIFS_FS_ADVANCED_COMPR
depends on UBIFS_FS
default y
help
LZO compressor is generally faster than zlib but compresses worse.
@ -32,14 +32,12 @@ config UBIFS_FS_LZO
config UBIFS_FS_ZLIB
bool "ZLIB compression support" if UBIFS_FS_ADVANCED_COMPR
depends on UBIFS_FS
default y
help
Zlib compresses better than LZO but it is slower. Say 'Y' if unsure.
config UBIFS_ATIME_SUPPORT
bool "Access time support" if UBIFS_FS
depends on UBIFS_FS
bool "Access time support"
default n
help
Originally UBIFS did not support atime, because it looked like a bad idea due
@ -54,7 +52,6 @@ config UBIFS_ATIME_SUPPORT
config UBIFS_FS_XATTR
bool "UBIFS XATTR support"
depends on UBIFS_FS
default y
help
Saying Y here includes support for extended attributes (xattrs).
@ -65,7 +62,7 @@ config UBIFS_FS_XATTR
config UBIFS_FS_ENCRYPTION
bool "UBIFS Encryption"
depends on UBIFS_FS && UBIFS_FS_XATTR && BLOCK
depends on UBIFS_FS_XATTR && BLOCK
select FS_ENCRYPTION
default n
help
@ -76,7 +73,7 @@ config UBIFS_FS_ENCRYPTION
config UBIFS_FS_SECURITY
bool "UBIFS Security Labels"
depends on UBIFS_FS && UBIFS_FS_XATTR
depends on UBIFS_FS_XATTR
default y
help
Security labels provide an access control facility to support Linux
@ -89,6 +86,7 @@ config UBIFS_FS_SECURITY
config UBIFS_FS_AUTHENTICATION
bool "UBIFS authentication support"
depends on KEYS
select CRYPTO_HMAC
help
Enable authentication support for UBIFS. This feature offers protection
@ -96,3 +94,5 @@ config UBIFS_FS_AUTHENTICATION
If you say yes here you should also select a hashing algorithm such as
sha256, these are not selected automatically since there are many
different options.
endif # UBIFS_FS

12
fs/ubifs/lpt.c
View File

@ -1675,6 +1675,12 @@ int ubifs_lpt_calc_hash(struct ubifs_info *c, u8 *hash)
if (!ubifs_authenticated(c))
return 0;
if (!c->nroot) {
err = ubifs_read_nnode(c, NULL, 0);
if (err)
return err;
}
desc = ubifs_hash_get_desc(c);
if (IS_ERR(desc))
return PTR_ERR(desc);
@ -1685,12 +1691,6 @@ int ubifs_lpt_calc_hash(struct ubifs_info *c, u8 *hash)
goto out;
}
if (!c->nroot) {
err = ubifs_read_nnode(c, NULL, 0);
if (err)
return err;
}
cnode = (struct ubifs_cnode *)c->nroot;
while (cnode) {

72
fs/ubifs/replay.c
View File

@ -212,6 +212,38 @@ static int trun_remove_range(struct ubifs_info *c, struct replay_entry *r)
return ubifs_tnc_remove_range(c, &min_key, &max_key);
}
/**
* inode_still_linked - check whether inode in question will be re-linked.
* @c: UBIFS file-system description object
* @rino: replay entry to test
*
* O_TMPFILE files can be re-linked, this means link count goes from 0 to 1.
* This case needs special care, otherwise all references to the inode will
* be removed upon the first replay entry of an inode with link count 0
* is found.
*/
static bool inode_still_linked(struct ubifs_info *c, struct replay_entry *rino)
{
struct replay_entry *r;
ubifs_assert(c, rino->deletion);
ubifs_assert(c, key_type(c, &rino->key) == UBIFS_INO_KEY);
/*
* Find the most recent entry for the inode behind @rino and check
* whether it is a deletion.
*/
list_for_each_entry_reverse(r, &c->replay_list, list) {
ubifs_assert(c, r->sqnum >= rino->sqnum);
if (key_inum(c, &r->key) == key_inum(c, &rino->key))
return r->deletion == 0;
}
ubifs_assert(c, 0);
return false;
}
/**
* apply_replay_entry - apply a replay entry to the TNC.
* @c: UBIFS file-system description object
@ -239,6 +271,11 @@ static int apply_replay_entry(struct ubifs_info *c, struct replay_entry *r)
{
ino_t inum = key_inum(c, &r->key);
if (inode_still_linked(c, r)) {
err = 0;
break;
}
err = ubifs_tnc_remove_ino(c, inum);
break;
}
@ -533,6 +570,28 @@ static int is_last_bud(struct ubifs_info *c, struct ubifs_bud *bud)
return data == 0xFFFFFFFF;
}
/* authenticate_sleb_hash and authenticate_sleb_hmac are split out for stack usage */
static int authenticate_sleb_hash(struct ubifs_info *c, struct shash_desc *log_hash, u8 *hash)
{
SHASH_DESC_ON_STACK(hash_desc, c->hash_tfm);
hash_desc->tfm = c->hash_tfm;
hash_desc->flags = CRYPTO_TFM_REQ_MAY_SLEEP;
ubifs_shash_copy_state(c, log_hash, hash_desc);
return crypto_shash_final(hash_desc, hash);
}
static int authenticate_sleb_hmac(struct ubifs_info *c, u8 *hash, u8 *hmac)
{
SHASH_DESC_ON_STACK(hmac_desc, c->hmac_tfm);
hmac_desc->tfm = c->hmac_tfm;
hmac_desc->flags = CRYPTO_TFM_REQ_MAY_SLEEP;
return crypto_shash_digest(hmac_desc, hash, c->hash_len, hmac);
}
/**
* authenticate_sleb - authenticate one scan LEB
* @c: UBIFS file-system description object
@ -574,21 +633,12 @@ static int authenticate_sleb(struct ubifs_info *c, struct ubifs_scan_leb *sleb,
if (snod->type == UBIFS_AUTH_NODE) {
struct ubifs_auth_node *auth = snod->node;
SHASH_DESC_ON_STACK(hash_desc, c->hash_tfm);
SHASH_DESC_ON_STACK(hmac_desc, c->hmac_tfm);
hash_desc->tfm = c->hash_tfm;
hash_desc->flags = CRYPTO_TFM_REQ_MAY_SLEEP;
ubifs_shash_copy_state(c, log_hash, hash_desc);
err = crypto_shash_final(hash_desc, hash);
err = authenticate_sleb_hash(c, log_hash, hash);
if (err)
goto out;
hmac_desc->tfm = c->hmac_tfm;
hmac_desc->flags = CRYPTO_TFM_REQ_MAY_SLEEP;
err = crypto_shash_digest(hmac_desc, hash, c->hash_len,
hmac);
err = authenticate_sleb_hmac(c, hash, hmac);
if (err)
goto out;

13
fs/ubifs/sb.c
View File

@ -63,6 +63,17 @@
/* Default time granularity in nanoseconds */
#define DEFAULT_TIME_GRAN 1000000000
static int get_default_compressor(struct ubifs_info *c)
{
if (ubifs_compr_present(c, UBIFS_COMPR_LZO))
return UBIFS_COMPR_LZO;
if (ubifs_compr_present(c, UBIFS_COMPR_ZLIB))
return UBIFS_COMPR_ZLIB;
return UBIFS_COMPR_NONE;
}
/**
* create_default_filesystem - format empty UBI volume.
* @c: UBIFS file-system description object
@ -207,7 +218,7 @@ static int create_default_filesystem(struct ubifs_info *c)
if (c->mount_opts.override_compr)
sup->default_compr = cpu_to_le16(c->mount_opts.compr_type);
else
sup->default_compr = cpu_to_le16(UBIFS_COMPR_LZO);
sup->default_compr = cpu_to_le16(get_default_compressor(c));
generate_random_uuid(sup->uuid);

8
include/asm-generic/bug.h
View File

@ -17,8 +17,10 @@
#ifndef __ASSEMBLY__
#include <linux/kernel.h>
struct bug_entry {
#ifdef CONFIG_BUG
#ifdef CONFIG_GENERIC_BUG
struct bug_entry {
#ifndef CONFIG_GENERIC_BUG_RELATIVE_POINTERS
unsigned long bug_addr;
#else
@ -33,10 +35,8 @@ struct bug_entry {
unsigned short line;
#endif
unsigned short flags;
#endif /* CONFIG_GENERIC_BUG */
};
#ifdef CONFIG_BUG
#endif /* CONFIG_GENERIC_BUG */
/*
* Don't use BUG() or BUG_ON() unless there's really no way out; one

56
include/linux/compiler.h
View File

@ -99,13 +99,22 @@ void ftrace_likely_update(struct ftrace_likely_data *f, int val,
* unique, to convince GCC not to merge duplicate inline asm statements.
*/
#define annotate_reachable() ({ \
asm volatile("ANNOTATE_REACHABLE counter=%c0" \
: : "i" (__COUNTER__)); \
asm volatile("%c0:\n\t" \
".pushsection .discard.reachable\n\t" \
".long %c0b - .\n\t" \
".popsection\n\t" : : "i" (__COUNTER__)); \
})
#define annotate_unreachable() ({ \
asm volatile("ANNOTATE_UNREACHABLE counter=%c0" \
: : "i" (__COUNTER__)); \
asm volatile("%c0:\n\t" \
".pushsection .discard.unreachable\n\t" \
".long %c0b - .\n\t" \
".popsection\n\t" : : "i" (__COUNTER__)); \
})
#define ASM_UNREACHABLE \
"999:\n\t" \
".pushsection .discard.unreachable\n\t" \
".long 999b - .\n\t" \
".popsection\n\t"
#else
#define annotate_reachable()
#define annotate_unreachable()
@ -293,45 +302,6 @@ static inline void *offset_to_ptr(const int *off)
return (void *)((unsigned long)off + *off);
}
#else /* __ASSEMBLY__ */
#ifdef __KERNEL__
#ifndef LINKER_SCRIPT
#ifdef CONFIG_STACK_VALIDATION
.macro ANNOTATE_UNREACHABLE counter:req
\counter:
.pushsection .discard.unreachable
.long \counter\()b -.
.popsection
.endm
.macro ANNOTATE_REACHABLE counter:req
\counter:
.pushsection .discard.reachable
.long \counter\()b -.
.popsection
.endm
.macro ASM_UNREACHABLE
999:
.pushsection .discard.unreachable
.long 999b - .
.popsection
.endm
#else /* CONFIG_STACK_VALIDATION */
.macro ANNOTATE_UNREACHABLE counter:req
.endm
.macro ANNOTATE_REACHABLE counter:req
.endm
.macro ASM_UNREACHABLE
.endm
#endif /* CONFIG_STACK_VALIDATION */
#endif /* LINKER_SCRIPT */
#endif /* __KERNEL__ */
#endif /* __ASSEMBLY__ */
/* Compile time object size, -1 for unknown */

69
kernel/futex.c
View File

@ -1148,11 +1148,65 @@ out_error:
return ret;
}
static int handle_exit_race(u32 __user *uaddr, u32 uval,
struct task_struct *tsk)
{
u32 uval2;
/*
* If PF_EXITPIDONE is not yet set, then try again.
*/
if (tsk && !(tsk->flags & PF_EXITPIDONE))
return -EAGAIN;
/*
* Reread the user space value to handle the following situation:
*
* CPU0 CPU1
*
* sys_exit() sys_futex()
* do_exit() futex_lock_pi()
* futex_lock_pi_atomic()
* exit_signals(tsk) No waiters:
* tsk->flags |= PF_EXITING; *uaddr == 0x00000PID
* mm_release(tsk) Set waiter bit
* exit_robust_list(tsk) { *uaddr = 0x80000PID;
* Set owner died attach_to_pi_owner() {
* *uaddr = 0xC0000000; tsk = get_task(PID);
* } if (!tsk->flags & PF_EXITING) {
* ... attach();
* tsk->flags |= PF_EXITPIDONE; } else {
* if (!(tsk->flags & PF_EXITPIDONE))
* return -EAGAIN;
* return -ESRCH; <--- FAIL
* }
*
* Returning ESRCH unconditionally is wrong here because the
* user space value has been changed by the exiting task.
*
* The same logic applies to the case where the exiting task is
* already gone.
*/
if (get_futex_value_locked(&uval2, uaddr))
return -EFAULT;
/* If the user space value has changed, try again. */
if (uval2 != uval)
return -EAGAIN;
/*
* The exiting task did not have a robust list, the robust list was
* corrupted or the user space value in *uaddr is simply bogus.
* Give up and tell user space.
*/
return -ESRCH;
}
/*
* Lookup the task for the TID provided from user space and attach to
* it after doing proper sanity checks.
*/
static int attach_to_pi_owner(u32 uval, union futex_key *key,
static int attach_to_pi_owner(u32 __user *uaddr, u32 uval, union futex_key *key,
struct futex_pi_state **ps)
{
pid_t pid = uval & FUTEX_TID_MASK;
@ -1162,12 +1216,15 @@ static int attach_to_pi_owner(u32 uval, union futex_key *key,
/*
* We are the first waiter - try to look up the real owner and attach
* the new pi_state to it, but bail out when TID = 0 [1]
*
* The !pid check is paranoid. None of the call sites should end up
* with pid == 0, but better safe than sorry. Let the caller retry
*/
if (!pid)
return -ESRCH;
return -EAGAIN;
p = find_get_task_by_vpid(pid);
if (!p)
return -ESRCH;
return handle_exit_race(uaddr, uval, NULL);
if (unlikely(p->flags & PF_KTHREAD)) {
put_task_struct(p);
@ -1187,7 +1244,7 @@ static int attach_to_pi_owner(u32 uval, union futex_key *key,
* set, we know that the task has finished the
* cleanup:
*/
int ret = (p->flags & PF_EXITPIDONE) ? -ESRCH : -EAGAIN;
int ret = handle_exit_race(uaddr, uval, p);
raw_spin_unlock_irq(&p->pi_lock);
put_task_struct(p);
@ -1244,7 +1301,7 @@ static int lookup_pi_state(u32 __user *uaddr, u32 uval,
* We are the first waiter - try to look up the owner based on
* @uval and attach to it.
*/
return attach_to_pi_owner(uval, key, ps);
return attach_to_pi_owner(uaddr, uval, key, ps);
}
static int lock_pi_update_atomic(u32 __user *uaddr, u32 uval, u32 newval)
@ -1352,7 +1409,7 @@ static int futex_lock_pi_atomic(u32 __user *uaddr, struct futex_hash_bucket *hb,
* attach to the owner. If that fails, no harm done, we only
* set the FUTEX_WAITERS bit in the user space variable.
*/
return attach_to_pi_owner(uval, key, ps);
return attach_to_pi_owner(uaddr, newval, key, ps);
}
/**

5
kernel/time/posix-timers.c
View File

@ -289,9 +289,6 @@ static void common_hrtimer_rearm(struct k_itimer *timr)
{
struct hrtimer *timer = &timr->it.real.timer;
if (!timr->it_interval)
return;
timr->it_overrun += hrtimer_forward(timer, timer->base->get_time(),
timr->it_interval);
hrtimer_restart(timer);
@ -317,7 +314,7 @@ void posixtimer_rearm(struct kernel_siginfo *info)
if (!timr)
return;
if (timr->it_requeue_pending == info->si_sys_private) {
if (timr->it_interval && timr->it_requeue_pending == info->si_sys_private) {
timr->kclock->timer_rearm(timr);
timr->it_active = 1;

3
net/core/skmsg.c
View File

@ -94,6 +94,9 @@ int sk_msg_clone(struct sock *sk, struct sk_msg *dst, struct sk_msg *src,
}
while (len) {
if (sk_msg_full(dst))
return -ENOSPC;
sge_len = sge->length - off;
sge_off = sge->offset + off;
if (sge_len > len)

4
net/ipv4/inet_diag.c
View File

@ -998,7 +998,9 @@ next_chunk:
if (!inet_diag_bc_sk(bc, sk))
goto next_normal;
sock_hold(sk);
if (!refcount_inc_not_zero(&sk->sk_refcnt))
goto next_normal;
num_arr[accum] = num;
sk_arr[accum] = sk;
if (++accum == SKARR_SZ)

1
net/ipv6/ip6_tunnel.c
View File

@ -901,6 +901,7 @@ static int ipxip6_rcv(struct sk_buff *skb, u8 ipproto,
goto drop;
if (!xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb))
goto drop;
ipv6h = ipv6_hdr(skb);
if (!ip6_tnl_rcv_ctl(t, &ipv6h->daddr, &ipv6h->saddr))
goto drop;
if (iptunnel_pull_header(skb, 0, tpi->proto, false))

1
net/ipv6/ip6_vti.c
View File

@ -318,6 +318,7 @@ static int vti6_rcv(struct sk_buff *skb)
return 0;
}
ipv6h = ipv6_hdr(skb);
if (!ip6_tnl_rcv_ctl(t, &ipv6h->daddr, &ipv6h->saddr)) {
t->dev->stats.rx_dropped++;
rcu_read_unlock();

1
net/ipv6/reassembly.c
View File

@ -384,6 +384,7 @@ static int ip6_frag_reasm(struct frag_queue *fq, struct sk_buff *prev,
if (skb_try_coalesce(head, fp, &headstolen, &delta)) {
kfree_skb_partial(fp, headstolen);
} else {
fp->sk = NULL;
if (!skb_shinfo(head)->frag_list)
skb_shinfo(head)->frag_list = fp;
head->data_len += fp->len;

4
net/packet/af_packet.c
View File

@ -2627,6 +2627,8 @@ static int tpacket_snd(struct packet_sock *po, struct msghdr *msg)
proto = saddr->sll_protocol;
addr = saddr->sll_addr;
dev = dev_get_by_index(sock_net(&po->sk), saddr->sll_ifindex);
if (addr && dev && saddr->sll_halen < dev->addr_len)
goto out;
}
err = -ENXIO;
@ -2825,6 +2827,8 @@ static int packet_snd(struct socket *sock, struct msghdr *msg, size_t len)
proto = saddr->sll_protocol;
addr = saddr->sll_addr;
dev = dev_get_by_index(sock_net(sk), saddr->sll_ifindex);
if (addr && dev && saddr->sll_halen < dev->addr_len)
goto out;
}
err = -ENXIO;

10
net/tls/tls_sw.c
View File

@ -943,10 +943,12 @@ fallback_to_reg_send:
tls_ctx->tx.overhead_size);
}
ret = sk_msg_memcopy_from_iter(sk, &msg->msg_iter, msg_pl,
try_to_copy);
if (ret < 0)
goto trim_sgl;
if (try_to_copy) {
ret = sk_msg_memcopy_from_iter(sk, &msg->msg_iter,
msg_pl, try_to_copy);
if (ret < 0)
goto trim_sgl;
}
/* Open records defined only if successfully copied, otherwise
* we would trim the sg but not reset the open record frags.

4
scripts/Kbuild.include
View File

@ -115,9 +115,7 @@ __cc-option = $(call try-run,\
# Do not attempt to build with gcc plugins during cc-option tests.
# (And this uses delayed resolution so the flags will be up to date.)
# In addition, do not include the asm macros which are built later.
CC_OPTION_FILTERED = $(GCC_PLUGINS_CFLAGS) $(ASM_MACRO_FLAGS)
CC_OPTION_CFLAGS = $(filter-out $(CC_OPTION_FILTERED),$(KBUILD_CFLAGS))
CC_OPTION_CFLAGS = $(filter-out $(GCC_PLUGINS_CFLAGS),$(KBUILD_CFLAGS))
# cc-option
# Usage: cflags-y += $(call cc-option,-march=winchip-c6,-march=i586)

2
scripts/mod/Makefile
View File

@ -4,8 +4,6 @@ OBJECT_FILES_NON_STANDARD := y
hostprogs-y := modpost mk_elfconfig
always := $(hostprogs-y) empty.o
CFLAGS_REMOVE_empty.o := $(ASM_MACRO_FLAGS)
modpost-objs := modpost.o file2alias.o sumversion.o
devicetable-offsets-file := devicetable-offsets.h