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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-09-02 00:42:36 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-09-02 00:42:36 +0300 |
| commit | 48983701a1e0e252faa4aab274ba14419cb286fa (patch) | |
| tree | ebbd73db84e96a31a44f92226e5245dd09ffad06 /arch/x86/kernel | |
| parent | 477f70cd2a67904e04c2c2b9bd0fa2e95222f2f6 (diff) | |
| parent | ee53488cc74143cadbe752d5332b1e3fd87eed49 (diff) | |
| download | linux-48983701a1e0e252faa4aab274ba14419cb286fa.tar.xz | |
Merge branch 'siginfo-si_trapno-for-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull siginfo si_trapno updates from Eric Biederman:
"The full set of si_trapno changes was not appropriate as a fix for the
newly added SIGTRAP TRAP_PERF, and so I postponed the rest of the
related cleanups.
This is the rest of the cleanups for si_trapno that reduces it from
being a really weird arch special case that is expect to be always
present (but isn't) on the architectures that support it to being yet
another field in the _sigfault union of struct siginfo.
The changes have been reviewed and marinated in linux-next. With the
removal of this awkward special case new code (like SIGTRAP TRAP_PERF)
that works across architectures should be easier to write and
maintain"
* 'siginfo-si_trapno-for-v5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
signal: Rename SIL_PERF_EVENT SIL_FAULT_PERF_EVENT for consistency
signal: Verify the alignment and size of siginfo_t
signal: Remove the generic __ARCH_SI_TRAPNO support
signal/alpha: si_trapno is only used with SIGFPE and SIGTRAP TRAP_UNK
signal/sparc: si_trapno is only used with SIGILL ILL_ILLTRP
arm64: Add compile-time asserts for siginfo_t offsets
arm: Add compile-time asserts for siginfo_t offsets
sparc64: Add compile-time asserts for siginfo_t offsets
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/signal_compat.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/kernel/signal_compat.c b/arch/x86/kernel/signal_compat.c index 06743ec054d2..b52407c56000 100644 --- a/arch/x86/kernel/signal_compat.c +++ b/arch/x86/kernel/signal_compat.c @@ -34,7 +34,13 @@ static inline void signal_compat_build_tests(void) BUILD_BUG_ON(NSIGSYS != 2); /* This is part of the ABI and can never change in size: */ + BUILD_BUG_ON(sizeof(siginfo_t) != 128); BUILD_BUG_ON(sizeof(compat_siginfo_t) != 128); + + /* This is a part of the ABI and can never change in alignment */ + BUILD_BUG_ON(__alignof__(siginfo_t) != 8); + BUILD_BUG_ON(__alignof__(compat_siginfo_t) != 4); + /* * The offsets of all the (unioned) si_fields are fixed * in the ABI, of course. Make sure none of them ever |