diff options
| author |   Olof Johansson <olof@lixom.net> | 2007-10-12 10:20:07 +1000 |
|---|---|---|
| committer |   Paul Mackerras <paulus@samba.org> | 2007-10-12 14:05:18 +1000 |
| commit | d0c3d534a4388a465101b634a95f2ec586415254 (patch) | |
| tree | e6acdc89adcb9057b7bbaeba55332fdcb97c2ceb /arch/powerpc/kernel/signal_64.c | |
| parent | [POWERPC] Add legacy serial support for OPB with flattened device tree (diff) | |
| download | linux-dev-d0c3d534a4388a465101b634a95f2ec586415254.tar.xz linux-dev-d0c3d534a4388a465101b634a95f2ec586415254.zip | |
[POWERPC] Implement logging of unhandled signals
Implement show_unhandled_signals sysctl + support to print when a process
is killed due to unhandled signals just as i386 and x86_64 does.
Default to having it off, unlike x86 that defaults on.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/kernel/signal_64.c')
| -rw-r--r-- | arch/powerpc/kernel/signal_64.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c index de895e6d8c62..faeb8f207ea4 100644 --- a/arch/powerpc/kernel/signal_64.c +++ b/arch/powerpc/kernel/signal_64.c @@ -64,6 +64,11 @@ struct rt_sigframe { char abigap[288]; } __attribute__ ((aligned (16))); +static const char fmt32[] = KERN_INFO \ + "%s[%d]: bad frame in %s: %08lx nip %08lx lr %08lx\n"; +static const char fmt64[] = KERN_INFO \ + "%s[%d]: bad frame in %s: %016lx nip %016lx lr %016lx\n"; + /* * Set up the sigcontext for the signal frame. */ @@ -315,6 +320,11 @@ badframe: printk("badframe in sys_rt_sigreturn, regs=%p uc=%p &uc->uc_mcontext=%p\n", regs, uc, &uc->uc_mcontext); #endif + if (show_unhandled_signals && printk_ratelimit()) + printk(regs->msr & MSR_SF ? fmt64 : fmt32, + current->comm, current->pid, "rt_sigreturn", + (long)uc, regs->nip, regs->link); + force_sig(SIGSEGV, current); return 0; } @@ -398,6 +408,11 @@ badframe: printk("badframe in setup_rt_frame, regs=%p frame=%p newsp=%lx\n", regs, frame, newsp); #endif + if (show_unhandled_signals && printk_ratelimit()) + printk(regs->msr & MSR_SF ? fmt64 : fmt32, + current->comm, current->pid, "setup_rt_frame", + (long)frame, regs->nip, regs->link); + force_sigsegv(signr, current); return 0; } |