diff options
| author | Josh Poimboeuf <jpoimboe@redhat.com> | 2016-12-16 10:05:06 -0600 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2016-12-19 11:47:05 +0100 |
| commit | 8b5e99f02264130782a10ba5c0c759797fb064ee (patch) | |
| tree | 827075dc8ee236295639917752650c96df2884e9 /arch/x86/include/asm/unwind.h | |
| parent | 8023e0e2a48d45e8d5363081fad9f7ed4402f953 (diff) | |
| download | linux-8b5e99f02264130782a10ba5c0c759797fb064ee.tar.gz linux-8b5e99f02264130782a10ba5c0c759797fb064ee.tar.bz2 linux-8b5e99f02264130782a10ba5c0c759797fb064ee.zip | |
x86/unwind: Dump stack data on warnings
The unwinder warnings are good at finding unexpected unwinder issues,
but they often don't give enough data to be able to fully diagnose them.
Print a one-time stack dump when a warning is detected.
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Link: http://lkml.kernel.org/r/15607370e3ddb1732b6a73d5c65937864df16ac8.1481904011.git.jpoimboe@redhat.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/include/asm/unwind.h')
| -rw-r--r-- | arch/x86/include/asm/unwind.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/include/asm/unwind.h b/arch/x86/include/asm/unwind.h index c5a7f3a930dd..6fa75b17aec3 100644 --- a/arch/x86/include/asm/unwind.h +++ b/arch/x86/include/asm/unwind.h @@ -12,7 +12,7 @@ struct unwind_state { struct task_struct *task; int graph_idx; #ifdef CONFIG_FRAME_POINTER - unsigned long *bp; + unsigned long *bp, *orig_sp; struct pt_regs *regs; #else unsigned long *sp; |