diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/include/asm/exception.h | 4 | ||||
| -rw-r--r-- | arch/arm64/kernel/entry-common.c | 11 | ||||
| -rw-r--r-- | arch/arm64/kernel/traps.c | 6 |
3 files changed, 16 insertions, 5 deletions
diff --git a/arch/arm64/include/asm/exception.h b/arch/arm64/include/asm/exception.h index ad30a5a1d2bf..0113b9242b67 100644 --- a/arch/arm64/include/asm/exception.h +++ b/arch/arm64/include/asm/exception.h @@ -31,6 +31,8 @@ static inline u32 disr_to_esr(u64 disr) return esr; } +asmlinkage void handle_bad_stack(struct pt_regs *regs); + asmlinkage void el1t_64_sync_handler(struct pt_regs *regs); asmlinkage void el1t_64_irq_handler(struct pt_regs *regs); asmlinkage void el1t_64_fiq_handler(struct pt_regs *regs); @@ -73,4 +75,6 @@ void do_el0_svc(struct pt_regs *regs); void do_el0_svc_compat(struct pt_regs *regs); void do_ptrauth_fault(struct pt_regs *regs, unsigned int esr); void do_serror(struct pt_regs *regs, unsigned int esr); + +void panic_bad_stack(struct pt_regs *regs, unsigned int esr, unsigned long far); #endif /* __ASM_EXCEPTION_H */ diff --git a/arch/arm64/kernel/entry-common.c b/arch/arm64/kernel/entry-common.c index ce5c8af91d31..efe95edf10c0 100644 --- a/arch/arm64/kernel/entry-common.c +++ b/arch/arm64/kernel/entry-common.c @@ -699,3 +699,14 @@ UNHANDLED(el0t, 32, irq) UNHANDLED(el0t, 32, fiq) UNHANDLED(el0t, 32, error) #endif /* CONFIG_COMPAT */ + +#ifdef CONFIG_VMAP_STACK +asmlinkage void noinstr handle_bad_stack(struct pt_regs *regs) +{ + unsigned int esr = read_sysreg(esr_el1); + unsigned long far = read_sysreg(far_el1); + + arm64_enter_nmi(regs); + panic_bad_stack(regs, esr, far); +} +#endif /* CONFIG_VMAP_STACK */ diff --git a/arch/arm64/kernel/traps.c b/arch/arm64/kernel/traps.c index 47d423f7ac81..af941996eb5f 100644 --- a/arch/arm64/kernel/traps.c +++ b/arch/arm64/kernel/traps.c @@ -763,15 +763,11 @@ void bad_el0_sync(struct pt_regs *regs, int reason, unsigned int esr) DEFINE_PER_CPU(unsigned long [OVERFLOW_STACK_SIZE/sizeof(long)], overflow_stack) __aligned(16); -asmlinkage void noinstr handle_bad_stack(struct pt_regs *regs) +void panic_bad_stack(struct pt_regs *regs, unsigned int esr, unsigned long far) { unsigned long tsk_stk = (unsigned long)current->stack; unsigned long irq_stk = (unsigned long)this_cpu_read(irq_stack_ptr); unsigned long ovf_stk = (unsigned long)this_cpu_ptr(overflow_stack); - unsigned int esr = read_sysreg(esr_el1); - unsigned long far = read_sysreg(far_el1); - - arm64_enter_nmi(regs); console_verbose(); pr_emerg("Insufficient stack space to handle exception!"); |