renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2025-01-26 23:55:40 +08:00
Code
6f3353c2d2
linux-next/arch/s390/kernel
History
Vasily Gorbik 6f3353c2d2 s390/disassembler: increase ebpf disasm buffer size 
Current ebpf disassembly buffer size of 64 is too small. E.g. this line
takes 65 bytes:
01fffff8005822e: ec8100ed8065\tclgrj\t%r8,%r1,8,001fffff80058408\n\0

Double the buffer size like it is done for the kernel disassembly buffer.

Fixes the following KASAN finding:

UG: KASAN: stack-out-of-bounds in print_fn_code+0x34c/0x380
Write of size 1 at addr 001fff800ad5f970 by task test_progs/853

CPU: 53 PID: 853 Comm: test_progs Not tainted
5.12.0-rc7-23786-g23457d86b1f0-dirty #19
Hardware name: IBM 3906 M04 704 (LPAR)
Call Trace:
 [<0000000cd8e0538a>] show_stack+0x17a/0x1668
 [<0000000cd8e2a5d8>] dump_stack+0x140/0x1b8
 [<0000000cd8e16e74>] print_address_description.constprop.0+0x54/0x260
 [<0000000cd75a8698>] kasan_report+0xc8/0x130
 [<0000000cd6e26da4>] print_fn_code+0x34c/0x380
 [<0000000cd6ea0f4e>] bpf_int_jit_compile+0xe3e/0xe58
 [<0000000cd72c4c88>] bpf_prog_select_runtime+0x5b8/0x9c0
 [<0000000cd72d1bf8>] bpf_prog_load+0xa78/0x19c0
 [<0000000cd72d7ad6>] __do_sys_bpf.part.0+0x18e/0x768
 [<0000000cd6e0f392>] do_syscall+0x12a/0x220
 [<0000000cd8e333f8>] __do_syscall+0x98/0xc8
 [<0000000cd8e54834>] system_call+0x6c/0x94
1 lock held by test_progs/853:
 #0: 0000000cd9bf7460 (report_lock){....}-{2:2}, at:
     kasan_report+0x96/0x130

addr 001fff800ad5f970 is located in stack of task test_progs/853 at
offset 96 in frame:
 print_fn_code+0x0/0x380
this frame has 1 object:
 [32, 96) 'buffer'

Memory state around the buggy address:
 001fff800ad5f800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 001fff800ad5f880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>001fff800ad5f900: 00 00 f1 f1 f1 f1 00 00 00 00 00 00 00 00 f3 f3
                                                             ^
 001fff800ad5f980: f3 f3 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 001fff800ad5fa00: 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00 00 00 00

Cc: <stable@vger.kernel.org>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2021-04-21 12:32:12 +02:00
..
syscalls fs: add mount_setattr() 2021-01-24 14:42:45 +01:00
vdso64 s390/vdso: use union tod_clock 2021-02-13 17:17:54 +01:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
alternative.c s390: add automatic detection of the spectre defense 2018-03-28 08:38:24 +02:00
asm-offsets.c s390: add stack for machine check handler 2021-02-13 17:17:53 +01:00
audit.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
audit.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
base.S s390: remove unused s390_base_ext_handler 2020-11-09 11:20:58 +01:00
cache.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
compat_audit.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
compat_linux.c s390: use generic UID16 implementation 2019-01-18 09:33:18 +01:00
compat_linux.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
compat_ptrace.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
compat_signal.c s390: convert to generic entry 2021-01-19 12:29:26 +01:00
cpcmd.c s390/cpcmd: fix inline assembly register clobbering 2021-04-05 11:30:07 +02:00
crash_dump.c elf_prstatus: collect the common part (everything before pr_reg) into a struct 2021-01-06 08:38:29 -05:00
debug.c s390/debug: use union tod_clock 2021-02-13 17:17:54 +01:00
diag.c s390/diag: convert to use DEFINE_SEQ_ATTRIBUTE macro 2020-09-17 14:11:03 +02:00
dis.c s390/disassembler: increase ebpf disasm buffer size 2021-04-21 12:32:12 +02:00
dumpstack.c s390/unwind: add machine check handler stack 2021-04-05 11:30:07 +02:00
early_printk.c s390/sclp: remove unused sclp_early_printk_forced 2020-09-21 08:08:44 +02:00
early.c s390/time: convert tod_clock_base to union 2021-02-13 17:17:54 +01:00
ebcdic.c s390: ebcdic: convert comments to UTF-8 2018-08-23 18:48:43 -07:00
entry.h s390/smp: fix do_restart() prototype 2021-04-18 21:32:02 +02:00
entry.S s390/entry: save the caller of psw_idle 2021-04-12 12:44:31 +02:00
fpu.c s390: convert to generic entry 2021-01-19 12:29:26 +01:00
ftrace.c Tracing updates for 5.11 2020-12-17 13:22:17 -08:00
guarded_storage.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2017-11-13 11:47:01 -08:00
head64.S s390/early: rewrite program parameter setup in C 2020-11-09 11:21:00 +01:00
idle.c s390/time,idle: get rid of unsigned long long 2021-03-08 10:46:27 +01:00
ima_arch.c s390/kexec_file: Disable kexec_load when IPLed secure 2019-04-29 10:44:03 +02:00
ipl_vmparm.c s390/ipl: provide uapi header for list directed IPL 2019-04-26 12:34:05 +02:00
ipl.c s390/smp: fix do_restart() prototype 2021-04-18 21:32:02 +02:00
irq.c s390/irq: fix reading of ext_params2 field from lowcore 2021-04-05 11:30:07 +02:00
jump_label.c s390/jump_label: remove unused structure definition 2019-06-07 10:10:10 +02:00
kdebugfs.c s390: no need to check return value of debugfs_create functions 2019-01-28 15:58:55 +01:00
kexec_elf.c kexec: Fix file verification on S390 2019-09-10 13:27:51 +01:00
kexec_image.c kexec_file: split KEXEC_VERIFY_SIG into KEXEC_SIG and KEXEC_SIG_FORCE 2019-08-19 21:54:15 -07:00
kprobes_insn_page.S s390/kprobes: move insn_page to text segment 2020-10-09 23:45:30 +02:00
kprobes.c s390 updates for the 5.10 merge window 2020-10-16 12:36:38 -07:00
lgr.c s390: convert to msecs_to_jiffies() 2020-06-29 16:31:46 +02:00
machine_kexec_file.c s390/kexec_file: fix initrd location for kdump kernel 2020-05-14 23:21:37 +02:00
machine_kexec_reloc.c s390/kaslr: add support for R_390_JMP_SLOT relocation type 2020-05-20 10:13:27 +02:00
machine_kexec.c mm: remove unneeded includes of <asm/pgalloc.h> 2020-08-07 11:33:26 -07:00
Makefile s390/traps: convert pgm_check.S to C 2021-04-12 12:46:41 +02:00
mcount.S s390/ftrace: assume -mhotpatch or -mrecord-mcount always available 2020-11-20 19:19:11 +01:00
module.c s390/module: Use s390_kernel_write() for late relocations 2020-05-08 00:12:43 +02:00
nmi.c s390: convert to generic entry 2021-01-19 12:29:26 +01:00
nospec-branch.c s390 updates for the 5.2 merge window 2019-05-06 16:42:54 -07:00
nospec-sysfs.c s390: Convert IS_ENABLED uses to __is_defined 2019-04-11 13:36:53 +02:00
numa.c s390/numa: move code to arch/s390/kernel 2020-08-11 18:16:55 +02:00
os_info.c s390/kernel: fix a typo 2021-03-22 11:36:05 +01:00
perf_cpum_cf_common.c s390/cpum_cf: move common functions into a separate file 2019-02-22 09:19:55 +01:00
perf_cpum_cf_diag.c s390/cpumf: disable preemption when accessing per-cpu variable 2021-03-15 19:09:25 +01:00
perf_cpum_cf_events.c s390/cpum_cf,perf: change DFLT_CCERROR counter name 2020-07-21 13:53:56 +02:00
perf_cpum_cf.c s390/cpumf: remove unneeded semicolon 2021-03-08 10:46:29 +01:00
perf_cpum_sf.c s390/time: convert tod_clock_base to union 2021-02-13 17:17:54 +01:00
perf_event.c s390: get rid of oprofile leftovers 2021-04-18 21:32:02 +02:00
perf_regs.c perf/arch: Remove perf_sample_data::regs_user_copy 2020-11-09 18:12:34 +01:00
process.c arch: setup PF_IO_WORKER threads like PF_KTHREAD 2021-02-21 17:25:22 -07:00
processor.c s390/cpuinfo: do not skip info for CPUs without MHz feature 2020-03-23 13:41:55 +01:00
ptrace.c s390: convert to generic entry 2021-01-19 12:29:26 +01:00
reipl.S s390: add missing ENDPROC statements to assembler functions 2019-05-02 13:54:11 +02:00
relocate_kernel.S s390: add missing ENDPROC statements to assembler functions 2019-05-02 13:54:11 +02:00
runtime_instr.c s390/runtime_instrumentation: fix storage key handling 2020-08-17 13:17:10 +02:00
setup.c s390/setup: use memblock_free_late() to free old stack 2021-04-07 14:37:28 +02:00
signal.c s390: add missing include to arch/s390/kernel/signal.c 2021-01-27 13:00:47 +01:00
smp.c s390/smp: implement arch_irq_work_raise() 2021-02-24 00:31:22 +01:00
stacktrace.c stacktrace: Remove reliable argument from arch_stack_walk() callback 2020-09-18 14:24:16 +01:00
sthyi.c s390/sthyi: Fix machine name validity indication 2018-10-15 12:17:00 +02:00
syscall.c s390: pass struct pt_regs instead of registers to syscalls 2021-01-19 12:29:27 +01:00
sysinfo.c s390: no need to check return value of debugfs_create functions 2019-01-28 15:58:55 +01:00
time.c s390/vdso: fix initializing and updating of vdso_data 2021-03-25 21:57:26 +01:00
topology.c s390/topology: remove always false if check 2021-03-08 10:46:27 +01:00
trace.c s390/ftrace: fix potential crashes when switching tracers 2020-04-22 16:20:55 +02:00
traps.c s390/traps,mm: add conditional trap handlers 2021-04-12 12:46:42 +02:00
unwind_bc.c s390/unwind: stop gracefully at user mode pt_regs in irq stack 2019-12-18 23:29:26 +01:00
uprobes.c s390: convert to generic entry 2021-01-19 12:29:26 +01:00
uv.c s390/protvirt: fix error return code in uv_info_init() 2021-04-12 12:46:41 +02:00
vdso.c s390/vdso: on timens page fault prefault also VVAR page 2021-02-09 15:57:05 +01:00
vmlinux.lds.S s390/mm: use invalid asce instead of kernel asce 2020-11-23 12:01:12 +01:00
vtime.c s390/vtime: fix increased steal time accounting 2021-03-15 19:09:25 +01:00