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authorAlexander Nyberg <alexn@telia.com>2005-06-25 14:58:27 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-25 16:24:55 -0700
commit4f339ecb30c759f94a29992d4635d9194132b6cf (patch)
tree9a1438b35d87a1d3a3359c273a39ac4895578e1c /arch/i386/mm
parent6e274d144302068a00794ec22e73520c0615cb6f (diff)
[PATCH] kdump: Save trap information for later analysis
If we are faulting in kernel it is quite possible this will lead to a panic. Save trap number, cr2 (in case of page fault) and error_code in the current thread (these fields already exist for signal delivery but are not used here). This helps later kdump crash analyzing from user-space (a script has been submitted to dig this info out in gdb). Signed-off-by: Alexander Nyberg <alexn@telia.com> Cc: <fastboot@lists.osdl.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/i386/mm')
-rw-r--r--arch/i386/mm/fault.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/i386/mm/fault.c b/arch/i386/mm/fault.c
index a509237c4815..92ed6c0a55da 100644
--- a/arch/i386/mm/fault.c
+++ b/arch/i386/mm/fault.c
@@ -463,6 +463,9 @@ no_context:
printk(KERN_ALERT "*pte = %08lx\n", page);
}
#endif
+ tsk->thread.cr2 = address;
+ tsk->thread.trap_no = 14;
+ tsk->thread.error_code = error_code;
die("Oops", regs, error_code);
bust_spinlocks(0);
do_exit(SIGKILL);