[PATCH] ARM: Print debug info for SIGBUS in user faults
From: Javi Merino <hidden>
Date: 2012-01-23 15:42:24
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
Print debug information on user faults for SIGBUS if user_debug = 16 in the kernel command line. Signed-off-by: Javi Merino <redacted> --- arch/arm/mm/fault.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-)
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 @@ __do_user_fault(struct task_struct *tsk, unsigned long addr, 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);
--
1.7.0.4