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authorCatalin Marinas <catalin.marinas@arm.com>2013-05-21 12:16:56 +0100
committerCatalin Marinas <catalin.marinas@arm.com>2013-05-24 17:31:04 +0100
commit953dbbed9ee310100bc841cdea8f992d192531c6 (patch)
tree057f5909fd8f0153a43087d57fe616ef57734398 /arch/arm64/kernel/traps.c
parent726dcaa158b316f02f7dec2cf6dbf61c30a8bf22 (diff)
downloadlinux-linaro-stable-953dbbed9ee310100bc841cdea8f992d192531c6.tar.gz
arm64: Do not report user faults for handled signals
Currently user faults (page, undefined instruction) are always reported even though the user may have a signal handler for them. This patch adds unhandled_signal() check together with printk_ratelimit() for these cases. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/kernel/traps.c')
-rw-r--r--arch/arm64/kernel/traps.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/arm64/kernel/traps.c b/arch/arm64/kernel/traps.c
index 61d7dd29f756..f1ff9bad00f7 100644
--- a/arch/arm64/kernel/traps.c
+++ b/arch/arm64/kernel/traps.c
@@ -267,7 +267,8 @@ asmlinkage void __exception do_undefinstr(struct pt_regs *regs)
return;
#endif
- if (show_unhandled_signals) {
+ if (show_unhandled_signals && unhandled_signal(current, SIGILL) &&
+ printk_ratelimit()) {
pr_info("%s[%d]: undefined instruction: pc=%p\n",
current->comm, task_pid_nr(current), pc);
dump_instr(KERN_INFO, regs);
@@ -294,7 +295,7 @@ asmlinkage long do_ni_syscall(struct pt_regs *regs)
}
#endif
- if (show_unhandled_signals) {
+ if (show_unhandled_signals && printk_ratelimit()) {
pr_info("%s[%d]: syscall %d\n", current->comm,
task_pid_nr(current), (int)regs->syscallno);
dump_instr("", regs);