From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Wed, 9 Apr 2014 23:49:50 +0000 (+0100)
Subject: Dump the registers on undefined instruction userspace faults
X-Git-Tag: firefly_0821_release~176^2~4085^2~1^3
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=b5b6b5f5442860474ebd263cfd3e4a2a972632d8;p=firefly-linux-kernel-4.4.55.git

Dump the registers on undefined instruction userspace faults

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 172ee18ff124..abd2fc067736 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -445,6 +445,7 @@ die_sig:
 	if (user_debug & UDBG_UNDEFINED) {
 		printk(KERN_INFO "%s (%d): undefined instruction: pc=%p\n",
 			current->comm, task_pid_nr(current), pc);
+		__show_regs(regs);
 		dump_instr(KERN_INFO, regs);
 	}
 #endif