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| author | Catalin Marinas <catalin.marinas@arm.com> | 2013-05-21 12:16:56 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2013-05-24 17:31:04 +0100 |
| commit | 953dbbed9ee310100bc841cdea8f992d192531c6 (patch) | |
| tree | 057f5909fd8f0153a43087d57fe616ef57734398 /arch/arm64 | |
| parent | 726dcaa158b316f02f7dec2cf6dbf61c30a8bf22 (diff) | |
| download | op-kernel-dev-953dbbed9ee310100bc841cdea8f992d192531c6.zip op-kernel-dev-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')
| -rw-r--r-- | arch/arm64/kernel/traps.c | 5 | ||||
| -rw-r--r-- | arch/arm64/mm/fault.c | 3 |
2 files changed, 5 insertions, 3 deletions
diff --git a/arch/arm64/kernel/traps.c b/arch/arm64/kernel/traps.c index 61d7dd2..f1ff9ba 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); diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c index 98af6e7..1426468 100644 --- a/arch/arm64/mm/fault.c +++ b/arch/arm64/mm/fault.c @@ -113,7 +113,8 @@ static void __do_user_fault(struct task_struct *tsk, unsigned long addr, { struct siginfo si; - if (show_unhandled_signals) { + if (show_unhandled_signals && unhandled_signal(tsk, sig) && + printk_ratelimit()) { pr_info("%s[%d]: unhandled %s (%d) at 0x%08lx, esr 0x%03x\n", tsk->comm, task_pid_nr(tsk), fault_name(esr), sig, addr, esr); |
