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| author | Takashi Iwai <tiwai@suse.de> | 2009-02-09 17:20:13 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2009-02-09 17:20:13 +0100 |
| commit | d9f8e9c34150ebec2be07bb95b6a23d99ba1f6de (patch) | |
| tree | 1e8c402df9b1154f4ca37eb5242f960ef7aab747 /arch/x86/kernel/signal.c | |
| parent | 2ebfb8eeb8f244f9d25937d31a947895cf819e26 (diff) | |
| parent | 8bd4bb7a35e8ebb015a531218614c48e10a3c4ee (diff) | |
| download | kernel-crypto-d9f8e9c34150ebec2be07bb95b6a23d99ba1f6de.tar.gz kernel-crypto-d9f8e9c34150ebec2be07bb95b6a23d99ba1f6de.tar.xz kernel-crypto-d9f8e9c34150ebec2be07bb95b6a23d99ba1f6de.zip | |
Merge branch 'topic/quirk-cleanup' into topic/misc
Diffstat (limited to 'arch/x86/kernel/signal.c')
| -rw-r--r-- | arch/x86/kernel/signal.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/arch/x86/kernel/signal.c b/arch/x86/kernel/signal.c index 89bb7668041..df0587f24c5 100644 --- a/arch/x86/kernel/signal.c +++ b/arch/x86/kernel/signal.c @@ -632,9 +632,16 @@ badframe: } #ifdef CONFIG_X86_32 -asmlinkage int sys_rt_sigreturn(struct pt_regs regs) +/* + * Note: do not pass in pt_regs directly as with tail-call optimization + * GCC will incorrectly stomp on the caller's frame and corrupt user-space + * register state: + */ +asmlinkage int sys_rt_sigreturn(unsigned long __unused) { - return do_rt_sigreturn(®s); + struct pt_regs *regs = (struct pt_regs *)&__unused; + + return do_rt_sigreturn(regs); } #else /* !CONFIG_X86_32 */ asmlinkage long sys_rt_sigreturn(struct pt_regs *regs) |