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authorJavi Merino <javi.merino@arm.com>2012-02-06 09:45:36 -0500
committerRussell King <rmk+kernel@arm.linux.org.uk>2012-03-24 05:38:53 -0400
commitf5274c2d0d8d91076af8605187d762dfa0b92825 (patch)
tree96b4c6292a9aec6d623bf577c2e10cd16b2ea4b9 /arch/arm/mm
parente0b823e9a543527dbb0f806252ee03a60f2aefbc (diff)
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>
Diffstat (limited to 'arch/arm/mm')
-rw-r--r--arch/arm/mm/fault.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c
index bb7eac381a8e..40c43a94ba72 100644
--- a/arch/arm/mm/fault.c
+++ b/arch/arm/mm/fault.c
@@ -164,7 +164,8 @@ __do_user_fault(struct task_struct *tsk, unsigned long addr,
164 struct siginfo si; 164 struct siginfo si;
165 165
166#ifdef CONFIG_DEBUG_USER 166#ifdef CONFIG_DEBUG_USER
167 if (user_debug & UDBG_SEGV) { 167 if (((user_debug & UDBG_SEGV) && (sig == SIGSEGV)) ||
168 ((user_debug & UDBG_BUS) && (sig == SIGBUS))) {
168 printk(KERN_DEBUG "%s: unhandled page fault (%d) at 0x%08lx, code 0x%03x\n", 169 printk(KERN_DEBUG "%s: unhandled page fault (%d) at 0x%08lx, code 0x%03x\n",
169 tsk->comm, sig, addr, fsr); 170 tsk->comm, sig, addr, fsr);
170 show_pte(tsk->mm, addr); 171 show_pte(tsk->mm, addr);