diff options
| -rw-r--r-- | arch/arm64/include/asm/system_misc.h | 13 | ||||
| -rw-r--r-- | arch/arm64/kernel/traps.c | 5 | ||||
| -rw-r--r-- | arch/arm64/mm/fault.c | 3 |
3 files changed, 16 insertions, 5 deletions
diff --git a/arch/arm64/include/asm/system_misc.h b/arch/arm64/include/asm/system_misc.h index 659fbf5..57f110b 100644 --- a/arch/arm64/include/asm/system_misc.h +++ b/arch/arm64/include/asm/system_misc.h @@ -23,6 +23,8 @@ #include <linux/compiler.h> #include <linux/linkage.h> #include <linux/irqflags.h> +#include <linux/signal.h> +#include <linux/ratelimit.h> #include <linux/reboot.h> struct pt_regs; @@ -43,6 +45,17 @@ extern void __show_regs(struct pt_regs *); extern void (*arm_pm_restart)(enum reboot_mode reboot_mode, const char *cmd); +#define show_unhandled_signals_ratelimited() \ +({ \ + static DEFINE_RATELIMIT_STATE(_rs, \ + DEFAULT_RATELIMIT_INTERVAL, \ + DEFAULT_RATELIMIT_BURST); \ + bool __show_ratelimited = false; \ + if (show_unhandled_signals && __ratelimit(&_rs)) \ + __show_ratelimited = true; \ + __show_ratelimited; \ +}) + #define UDBG_UNDEFINED (1 << 0) #define UDBG_SYSCALL (1 << 1) #define UDBG_BADABORT (1 << 2) diff --git a/arch/arm64/kernel/traps.c b/arch/arm64/kernel/traps.c index 1ef2940..a12251c 100644 --- a/arch/arm64/kernel/traps.c +++ b/arch/arm64/kernel/traps.c @@ -335,8 +335,7 @@ asmlinkage void __exception do_undefinstr(struct pt_regs *regs) if (call_undef_hook(regs) == 0) return; - if (show_unhandled_signals && unhandled_signal(current, SIGILL) && - printk_ratelimit()) { + if (show_unhandled_signals_ratelimited() && unhandled_signal(current, SIGILL)) { pr_info("%s[%d]: undefined instruction: pc=%p\n", current->comm, task_pid_nr(current), pc); dump_instr(KERN_INFO, regs); @@ -363,7 +362,7 @@ asmlinkage long do_ni_syscall(struct pt_regs *regs) } #endif - if (show_unhandled_signals && printk_ratelimit()) { + if (show_unhandled_signals_ratelimited()) { 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 e8c608c..66bd92a 100644 --- a/arch/arm64/mm/fault.c +++ b/arch/arm64/mm/fault.c @@ -115,8 +115,7 @@ static void __do_user_fault(struct task_struct *tsk, unsigned long addr, { struct siginfo si; - if (show_unhandled_signals && unhandled_signal(tsk, sig) && - printk_ratelimit()) { + if (show_unhandled_signals_ratelimited() && unhandled_signal(tsk, sig)) { 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); |
