diff options
Diffstat (limited to 'arch/arm64/kernel')
| -rw-r--r-- | arch/arm64/kernel/arm64ksyms.c | 1 | ||||
| -rw-r--r-- | arch/arm64/kernel/entry.S | 10 | ||||
| -rw-r--r-- | arch/arm64/kernel/perf_event.c | 1 | ||||
| -rw-r--r-- | arch/arm64/kernel/traps.c | 17 |
4 files changed, 24 insertions, 5 deletions
diff --git a/arch/arm64/kernel/arm64ksyms.c b/arch/arm64/kernel/arm64ksyms.c index 7df1aad29b67..41b4f626d554 100644 --- a/arch/arm64/kernel/arm64ksyms.c +++ b/arch/arm64/kernel/arm64ksyms.c @@ -34,6 +34,7 @@ EXPORT_SYMBOL(__strnlen_user); EXPORT_SYMBOL(__strncpy_from_user); EXPORT_SYMBOL(copy_page); +EXPORT_SYMBOL(clear_page); EXPORT_SYMBOL(__copy_from_user); EXPORT_SYMBOL(__copy_to_user); diff --git a/arch/arm64/kernel/entry.S b/arch/arm64/kernel/entry.S index c7e047049f2c..1d1314280a03 100644 --- a/arch/arm64/kernel/entry.S +++ b/arch/arm64/kernel/entry.S @@ -390,6 +390,16 @@ el0_sync_compat: b.eq el0_fpsimd_exc cmp x24, #ESR_EL1_EC_UNKNOWN // unknown exception in EL0 b.eq el0_undef + cmp x24, #ESR_EL1_EC_CP15_32 // CP15 MRC/MCR trap + b.eq el0_undef + cmp x24, #ESR_EL1_EC_CP15_64 // CP15 MRRC/MCRR trap + b.eq el0_undef + cmp x24, #ESR_EL1_EC_CP14_MR // CP14 MRC/MCR trap + b.eq el0_undef + cmp x24, #ESR_EL1_EC_CP14_LS // CP14 LDC/STC trap + b.eq el0_undef + cmp x24, #ESR_EL1_EC_CP14_64 // CP14 MRRC/MCRR trap + b.eq el0_undef cmp x24, #ESR_EL1_EC_BREAKPT_EL0 // debug exception in EL0 b.ge el0_dbg b el0_inv diff --git a/arch/arm64/kernel/perf_event.c b/arch/arm64/kernel/perf_event.c index 1e49e5eb81e9..9ba33c40cdf8 100644 --- a/arch/arm64/kernel/perf_event.c +++ b/arch/arm64/kernel/perf_event.c @@ -1336,6 +1336,7 @@ void perf_callchain_user(struct perf_callchain_entry *entry, return; } + perf_callchain_store(entry, regs->pc); tail = (struct frame_tail __user *)regs->regs[29]; while (entry->nr < PERF_MAX_STACK_DEPTH && diff --git a/arch/arm64/kernel/traps.c b/arch/arm64/kernel/traps.c index 61d7dd29f756..f30852d28590 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); @@ -310,14 +311,20 @@ asmlinkage long do_ni_syscall(struct pt_regs *regs) */ asmlinkage void bad_mode(struct pt_regs *regs, int reason, unsigned int esr) { + siginfo_t info; + void __user *pc = (void __user *)instruction_pointer(regs); console_verbose(); pr_crit("Bad mode in %s handler detected, code 0x%08x\n", handler[reason], esr); + __show_regs(regs); + + info.si_signo = SIGILL; + info.si_errno = 0; + info.si_code = ILL_ILLOPC; + info.si_addr = pc; - die("Oops - bad mode", regs, 0); - local_irq_disable(); - panic("bad mode"); + arm64_notify_die("Oops - bad mode", regs, &info, 0); } void __pte_error(const char *file, int line, unsigned long val) |