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| author | Haavard Skinnemoen <haavard.skinnemoen@atmel.com> | 2009-03-27 16:14:38 +0100 |
|---|---|---|
| committer | Haavard Skinnemoen <haavard.skinnemoen@atmel.com> | 2009-03-27 16:14:38 +0100 |
| commit | b92efa9abffc4a634cd2e7a0f81f8aa6310d67c9 (patch) | |
| tree | 9847508d9b8d4e585f90db4a453bfbc3700c997e /arch/x86/kernel/signal.c | |
| parent | a16fffdd8eb95ebab7dc22414896fe6493951e0e (diff) | |
| parent | be0ea69674ed95e1e98cb3687a241badc756d228 (diff) | |
| download | kernel-crypto-b92efa9abffc4a634cd2e7a0f81f8aa6310d67c9.tar.gz kernel-crypto-b92efa9abffc4a634cd2e7a0f81f8aa6310d67c9.tar.xz kernel-crypto-b92efa9abffc4a634cd2e7a0f81f8aa6310d67c9.zip | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into avr32-arch
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) |