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signal: Ensure no siginfo union member increases the size of struct siginfo

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Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman 2017-07-19 21:23:15 -05:00
parent 75c0abb870
commit aba1be2f8c
1 changed files with 1 additions and 0 deletions
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kernel/signal.c
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@ -3688,6 +3688,7 @@ void __init signals_init(void)
/* If this check fails, the __ARCH_SI_PREAMBLE_SIZE value is wrong! */ /* If this check fails, the __ARCH_SI_PREAMBLE_SIZE value is wrong! */
BUILD_BUG_ON(__ARCH_SI_PREAMBLE_SIZE BUILD_BUG_ON(__ARCH_SI_PREAMBLE_SIZE
!= offsetof(struct siginfo, _sifields._pad)); != offsetof(struct siginfo, _sifields._pad));
BUILD_BUG_ON(sizeof(struct siginfo) != SI_MAX_SIZE);
sigqueue_cachep = KMEM_CACHE(sigqueue, SLAB_PANIC); sigqueue_cachep = KMEM_CACHE(sigqueue, SLAB_PANIC);
} }