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| author | Andrew Morton <akpm@linux-foundation.org> | 2007-08-25 01:11:54 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2008-10-16 18:24:41 +0200 |
| commit | ae87221d3ce49d9de1e43756da834fd0bf05a2ad (patch) | |
| tree | f96792656b00e95c307f3f37369c98a85ce38207 /arch/x86/kernel/dumpstack_64.c | |
| parent | modules: fix module "notes" kobject leak (diff) | |
| download | linux-ae87221d3ce49d9de1e43756da834fd0bf05a2ad.tar.xz linux-ae87221d3ce49d9de1e43756da834fd0bf05a2ad.zip | |
sysfs: crash debugging
Print the name of the last-accessed sysfs file when we oops, to help track
down oopses which occur in sysfs store/read handlers. Because these oopses
tend to not leave any trace of the offending code in the stack traces.
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'arch/x86/kernel/dumpstack_64.c')
| -rw-r--r-- | arch/x86/kernel/dumpstack_64.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kernel/dumpstack_64.c b/arch/x86/kernel/dumpstack_64.c index 086cc8118e39..96a5db7da8a7 100644 --- a/arch/x86/kernel/dumpstack_64.c +++ b/arch/x86/kernel/dumpstack_64.c @@ -13,6 +13,7 @@ #include <linux/kexec.h> #include <linux/bug.h> #include <linux/nmi.h> +#include <linux/sysfs.h> #include <asm/stacktrace.h> @@ -489,6 +490,7 @@ int __kprobes __die(const char *str, struct pt_regs *regs, long err) printk("DEBUG_PAGEALLOC"); #endif printk("\n"); + sysfs_printk_last_file(); if (notify_die(DIE_OOPS, str, regs, err, current->thread.trap_no, SIGSEGV) == NOTIFY_STOP) return 1; |