uml: dump core on panic

Dump core after a panic.  This will provide better debugging information than
is currently available.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/arch/um/os-Linux/util.c b/arch/um/os-Linux/util.c
index 48bc4927b996..c307a89ed259 100644
--- a/arch/um/os-Linux/util.c
+++ b/arch/um/os-Linux/util.c
@@ -119,3 +119,9 @@ int setjmp_wrapper(void (*proc)(void *, void *), ...)
         va_end(args);
         return n;
 }
+
+void os_dump_core(void)
+{
+        signal(SIGSEGV, SIG_DFL);
+        abort();
+}