korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-11 21:38:32 +08:00
Code Issues Packages Projects Releases Wiki Activity
4ea33a976b
linux/arch/riscv/kernel
History
Linus Torvalds 34eb62d868 Orphan link sections were a long-standing source of obscure bugs, 
because the heuristics that various linkers & compilers use to handle them
 (include these bits into the output image vs discarding them silently)
 are both highly idiosyncratic and also version dependent.
 
 Instead of this historically problematic mess, this tree by Kees Cook (et al)
 adds build time asserts and build time warnings if there's any orphan section
 in the kernel or if a section is not sized as expected.
 
 And because we relied on so many silent assumptions in this area, fix a metric
 ton of dependencies and some outright bugs related to this, before we can
 finally enable the checks on the x86, ARM and ARM64 platforms.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
 -----BEGIN PGP SIGNATURE-----
 
 iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAl+Edv4RHG1pbmdvQGtl
 cm5lbC5vcmcACgkQEnMQ0APhK1hiKBAApdJEOaK7hMc3013DYNctklIxEPJL2mFJ
 11YJRIh4pUJTF0TE+EHT/D+rSIuRsyuoSmOQBQ61/wVSnyG067GjjVJRqh/eYaJ1
 fDhJi2FuHOjXl+CiN0KxzBjjp+V4NhF7jHT59tpQSvfZeg7FjteoxfztxaCp5ek3
 S3wHB3CC4c4jE3lfjHem1E9/PwT4kwPYx1c3gAUdEqJdjkihjX9fWusfjLeqW6/d
 Y5VkApi6bL9XiZUZj5l0dEIweLJJ86+PkKJqpo3spxxEak1LSn1MEix+lcJ8e1Kg
 sb/bEEivDcmFlFWOJnn0QLquCR0Cx5bz1pwsL0tuf0yAd4+sXX5IMuGUysZlEdKM
 BHL9h5HbevGF4BScwZwZH7lyEg7q67s5KnRu4hxy0Swfcj7y0oT/9lXqpbpZ2DqO
 Hd+bRRQKIbqnTMp0hcit9LfpLp93vj0dBlaV5ocAJJlu62u9VnwGG5HQuZ5giLUr
 kA1SLw63Y1wopFRxgFyER8les7eLsu0zxHeK44rRVlVnfI99OMTOgVNicmDFy3Fm
 AfcnfJG0BqBEJGQz5es34uQQKKBwFPtC9NztopI62KiwOspYYZyrO1BNxdOc6DlS
 mIHrmO89HMXuid5eolvLaFqUWirHoWO8TlycgZxUWVHc2txVPjAEU/axouU/dSSU
 w/6GpzAa+7g=
 =fXAw
 -----END PGP SIGNATURE-----

Merge tag 'core-build-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull orphan section checking from Ingo Molnar:
 "Orphan link sections were a long-standing source of obscure bugs,
  because the heuristics that various linkers & compilers use to handle
  them (include these bits into the output image vs discarding them
  silently) are both highly idiosyncratic and also version dependent.

  Instead of this historically problematic mess, this tree by Kees Cook
  (et al) adds build time asserts and build time warnings if there's any
  orphan section in the kernel or if a section is not sized as expected.

  And because we relied on so many silent assumptions in this area, fix
  a metric ton of dependencies and some outright bugs related to this,
  before we can finally enable the checks on the x86, ARM and ARM64
  platforms"

* tag 'core-build-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (36 commits)
  x86/boot/compressed: Warn on orphan section placement
  x86/build: Warn on orphan section placement
  arm/boot: Warn on orphan section placement
  arm/build: Warn on orphan section placement
  arm64/build: Warn on orphan section placement
  x86/boot/compressed: Add missing debugging sections to output
  x86/boot/compressed: Remove, discard, or assert for unwanted sections
  x86/boot/compressed: Reorganize zero-size section asserts
  x86/build: Add asserts for unwanted sections
  x86/build: Enforce an empty .got.plt section
  x86/asm: Avoid generating unused kprobe sections
  arm/boot: Handle all sections explicitly
  arm/build: Assert for unwanted sections
  arm/build: Add missing sections
  arm/build: Explicitly keep .ARM.attributes sections
  arm/build: Refactor linker script headers
  arm64/build: Assert for unwanted sections
  arm64/build: Add missing DWARF sections
  arm64/build: Use common DISCARDS in linker script
  arm64/build: Remove .eh_frame* sections due to unwind tables
  ...
2020-10-12 13:39:19 -07:00
..
vdso riscv: disable stack-protector for vDSO 2020-08-04 15:02:49 -07:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
asm-offsets.c riscv: Cleanup unnecessary define in asm-offset.c 2020-07-30 11:37:44 -07:00
cacheinfo.c riscv: cacheinfo: Implement cache_get_priv_group with a generic ops structure 2020-05-20 15:05:05 -07:00
cpu_ops_sbi.c RISC-V: Support cpu hotplug 2020-03-31 11:28:30 -07:00
cpu_ops_spinwait.c RISC-V: Add cpu_ops and modify default booting method 2020-03-31 11:25:56 -07:00
cpu_ops.c riscv: force __cpu_up_ variables to put in data section 2020-05-04 15:03:25 -07:00
cpu-hotplug.c RISC-V: Support cpu hotplug 2020-03-31 11:28:30 -07:00
cpu.c RISC-V: Rename and move plic_find_hart_id() to arch directory 2020-06-09 19:11:20 -07:00
cpufeature.c RISC-V: Add bitmap reprensenting ISA features common across CPUs 2020-05-04 14:08:59 -07:00
entry.S riscv: Cleanup unnecessary define in asm-offset.c 2020-07-30 11:37:44 -07:00
fpu.S riscv: abstract out CSR names for supervisor vs machine mode 2019-11-05 09:20:42 -08:00
ftrace.c RISC-V: Take text_mutex in ftrace_init_nop() 2020-09-11 12:15:21 -07:00
head.h riscv: add prototypes for assembly language functions from head.S 2019-10-28 00:46:00 -07:00
head.S riscv: Setup exception vector for nommu platform 2020-08-14 16:28:20 -07:00
irq.c RISC-V: Remove do_IRQ() function 2020-06-09 19:11:24 -07:00
jump_label.c riscv: Add jump-label implementation 2020-07-30 11:37:43 -07:00
kgdb.c riscv: Fix "no previous prototype" compile warning in kgdb.c file 2020-07-09 20:09:30 -07:00
Makefile RISC-V: Remove CLINT related code from timer and arch 2020-08-20 10:58:13 -07:00
mcount-dyn.S riscv/ftrace: Add DYNAMIC_FTRACE_WITH_REGS support 2018-04-02 19:59:13 -07:00
mcount.S RISC-V: remove the unused return_to_handler export 2018-10-22 17:38:12 -07:00
module-sections.c riscv: add missing header file includes 2019-10-28 00:46:01 -07:00
module.c riscv: Support R_RISCV_ADD64 and R_RISCV_SUB64 relocs 2020-07-30 11:37:41 -07:00
module.lds RISC-V: Add section of GOT.PLT for kernel module 2018-04-02 20:00:54 -07:00
patch.c maccess: rename probe_kernel_{read,write} to copy_{from,to}_kernel_nofault 2020-06-17 10:57:41 -07:00
perf_callchain.c riscv: abstract out CSR names for supervisor vs machine mode 2019-11-05 09:20:42 -08:00
perf_event.c riscv: perf_event: Make some funciton static 2020-05-11 13:48:19 -07:00
perf_regs.c riscv: Add support for perf registers sampling 2019-09-05 00:48:58 -07:00
process.c RISC-V Patches for the 5.9 Merge Window, Part 1 2020-08-07 10:11:12 -07:00
ptrace.c riscv: switch to ->regset_get() 2020-07-27 14:31:10 -04:00
reset.c riscv: cleanup the default power off implementation 2019-11-13 13:22:52 -08:00
riscv_ksyms.c riscv: Add KASAN support 2020-01-22 13:09:58 -08:00
sbi.c RISC-V: Add mechanism to provide custom IPI operations 2020-08-20 10:55:40 -07:00
setup.c RISC-V: Remove CLINT related code from timer and arch 2020-08-20 10:58:13 -07:00
signal.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
smp.c RISC-V: Remove CLINT related code from timer and arch 2020-08-20 10:58:13 -07:00
smpboot.c RISC-V: Remove CLINT related code from timer and arch 2020-08-20 10:58:13 -07:00
soc.c mm: introduce include/linux/pgtable.h 2020-06-09 09:39:13 -07:00
stacktrace.c kernel: rename show_stack_loglvl() => show_stack() 2020-06-09 09:39:13 -07:00
sys_riscv.c RISC-V: Don't allow write+exec only page mapping request in mmap 2020-06-18 17:28:53 -07:00
syscall_table.c riscv: add missing header file includes 2019-10-28 00:46:01 -07:00
time.c riscv: use vDSO common flow to reduce the latency of the time-related functions 2020-06-10 19:47:16 -07:00
traps_misaligned.c riscv: Unaligned load/store handling for M_MODE 2020-04-03 10:45:33 -07:00
traps.c RISC-V: Setup exception vector early 2020-07-30 11:37:48 -07:00
vdso.c RISC-V Patches for the 5.8 Merge Window, Part 2 2020-06-11 12:55:20 -07:00
vmlinux.lds.S Orphan link sections were a long-standing source of obscure bugs, 2020-10-12 13:39:19 -07:00