From 755f21bb894d3fe57017f5aa8f7ace8808fcb1e3 Mon Sep 17 00:00:00 2001 From: Atsushi Nemoto Date: Wed, 14 Feb 2007 14:41:01 +0900 Subject: [PATCH] [MIPS] Fix sigset_t endianess swapping issues in 32-bit compat code. access_ok in compat-signal.h is wrong (checking destination instead of source) and redundant (already checked before calling this function). Also sf_mask in struct sigframe32 should be compat_sigset_t type. Signed-off-by: Atsushi Nemoto Signed-off-by: Ralf Baechle --- arch/mips/kernel/signal32.c | 4 ++-- include/asm-mips/compat-signal.h | 3 --- 2 files changed, 2 insertions(+), 5 deletions(-) diff --git a/arch/mips/kernel/signal32.c b/arch/mips/kernel/signal32.c index c28cb21514c8..9f829f63024b 100644 --- a/arch/mips/kernel/signal32.c +++ b/arch/mips/kernel/signal32.c @@ -150,7 +150,7 @@ struct sigframe32 { u32 sf_ass[4]; /* argument save space for o32 */ u32 sf_code[2]; /* signal trampoline */ struct sigcontext32 sf_sc; - sigset_t sf_mask; + compat_sigset_t sf_mask; }; struct rt_sigframe32 { @@ -166,7 +166,7 @@ struct sigframe32 { u32 sf_ass[4]; /* argument save space for o32 */ u32 sf_pad[2]; struct sigcontext32 sf_sc; /* hw context */ - sigset_t sf_mask; + compat_sigset_t sf_mask; u32 sf_code[8] ____cacheline_aligned; /* signal trampoline */ }; diff --git a/include/asm-mips/compat-signal.h b/include/asm-mips/compat-signal.h index 672077084aa1..d6e7c3b4119a 100644 --- a/include/asm-mips/compat-signal.h +++ b/include/asm-mips/compat-signal.h @@ -33,9 +33,6 @@ static inline int __copy_conv_sigset_from_user(sigset_t *d, BUG_ON(sizeof(*d) != sizeof(*s)); BUG_ON(_NSIG_WORDS != 2); - if (unlikely(!access_ok(VERIFY_READ, d, sizeof(*d)))) - return -EFAULT; - #ifdef CONFIG_CPU_BIG_ENDIAN err = __get_user(u->c.sig[1], &s->sig[0]); err |= __get_user(u->c.sig[0], &s->sig[1]); -- GitLab