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| author | Vladimir Murzin <vladimir.murzin@arm.com> | 2015-06-19 15:28:16 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2015-06-19 16:20:10 +0100 |
| commit | 9e793ab84ed482047f7226595313f0f3a0aa6854 (patch) | |
| tree | d1c873808487c9326d8d543ab5a47c10af3ba689 /arch/arm64/mm/fault.c | |
| parent | 6f1a6ae87c0c60d7c462ef8fd071f291aa7a9abb (diff) | |
| download | lwn-9e793ab84ed482047f7226595313f0f3a0aa6854.tar.gz lwn-9e793ab84ed482047f7226595313f0f3a0aa6854.zip | |
arm64: show unhandled SP/PC alignment faults
Report unhandled SP/PC alignment faults if the show_unhandled_signals
variable is set (via /proc/sys/debug/exception-trace).
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/mm/fault.c')
| -rw-r--r-- | arch/arm64/mm/fault.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c index 96da13167d4a..e8c608c893cf 100644 --- a/arch/arm64/mm/fault.c +++ b/arch/arm64/mm/fault.c @@ -478,12 +478,19 @@ asmlinkage void __exception do_sp_pc_abort(unsigned long addr, struct pt_regs *regs) { struct siginfo info; + struct task_struct *tsk = current; + + if (show_unhandled_signals && unhandled_signal(tsk, SIGBUS)) + pr_info_ratelimited("%s[%d]: %s exception: pc=%p sp=%p\n", + tsk->comm, task_pid_nr(tsk), + esr_get_class_string(esr), (void *)regs->pc, + (void *)regs->sp); info.si_signo = SIGBUS; info.si_errno = 0; info.si_code = BUS_ADRALN; info.si_addr = (void __user *)addr; - arm64_notify_die("", regs, &info, esr); + arm64_notify_die("Oops - SP/PC alignment exception", regs, &info, esr); } static struct fault_info debug_fault_info[] = { |