commit f5274c2d0d8d91076af8605187d762dfa0b92825
author Javi Merino <javi.merino@arm.com> Mon Feb 06 15:45:36 2012 +0100
committer Russell King <rmk+kernel@arm.linux.org.uk> Sat Mar 24 09:38:53 2012 +0000
tree 96b4c6292a9aec6d623bf577c2e10cd16b2ea4b9
parent e0b823e9a543527dbb0f806252ee03a60f2aefbc

ARM: 7319/1: Print debug info for SIGBUS in user faults

Print debug information on user faults for SIGBUS if user_debug = 16
in the kernel command line.

Reference: <1327333344-26340-1-git-send-email-javi.merino@arm.com>

Signed-off-by: Javi Merino <javi.merino@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mm/fault.c

diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c
index bb7eac3..40c43a9 100644
--- a/arch/arm/mm/fault.c
+++ b/arch/arm/mm/fault.c
@@ -164,7 +164,8 @@
 	struct siginfo si;
 
 #ifdef CONFIG_DEBUG_USER
-	if (user_debug & UDBG_SEGV) {
+	if (((user_debug & UDBG_SEGV) && (sig == SIGSEGV)) ||
+	    ((user_debug & UDBG_BUS)  && (sig == SIGBUS))) {
 		printk(KERN_DEBUG "%s: unhandled page fault (%d) at 0x%08lx, code 0x%03x\n",
 		       tsk->comm, sig, addr, fsr);
 		show_pte(tsk->mm, addr);