diff options
Diffstat (limited to 'arch/arm64/kernel')
-rw-r--r-- | arch/arm64/kernel/ptrace.c | 2 | ||||
-rw-r--r-- | arch/arm64/kernel/sdei.c | 51 | ||||
-rw-r--r-- | arch/arm64/kernel/stacktrace.c | 2 |
3 files changed, 44 insertions, 11 deletions
diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c index 299758f9b9c4..6219486fa25f 100644 --- a/arch/arm64/kernel/ptrace.c +++ b/arch/arm64/kernel/ptrace.c @@ -132,7 +132,7 @@ static bool regs_within_kernel_stack(struct pt_regs *regs, unsigned long addr) { return ((addr & ~(THREAD_SIZE - 1)) == (kernel_stack_pointer(regs) & ~(THREAD_SIZE - 1))) || - on_irq_stack(addr); + on_irq_stack(addr, NULL); } /** diff --git a/arch/arm64/kernel/sdei.c b/arch/arm64/kernel/sdei.c index 6b8d90d5ceae..a94a868f0532 100644 --- a/arch/arm64/kernel/sdei.c +++ b/arch/arm64/kernel/sdei.c @@ -13,6 +13,7 @@ #include <asm/mmu.h> #include <asm/ptrace.h> #include <asm/sections.h> +#include <asm/stacktrace.h> #include <asm/sysreg.h> #include <asm/vmap_stack.h> @@ -88,23 +89,55 @@ static int init_sdei_stacks(void) return err; } -bool _on_sdei_stack(unsigned long sp) +bool on_sdei_normal_stack(unsigned long sp, + struct stack_info *info) { - unsigned long low, high; + unsigned long low = (unsigned long)raw_cpu_read(sdei_stack_normal_ptr); + unsigned long high = low + SDEI_STACK_SIZE; - if (!IS_ENABLED(CONFIG_VMAP_STACK)) + if (sp < low || sp >= high) return false; - low = (unsigned long)raw_cpu_read(sdei_stack_critical_ptr); - high = low + SDEI_STACK_SIZE; + if (info) { + info->low = low; + info->high = high; + info->type = STACK_TYPE_SDEI_NORMAL; + } - if (low <= sp && sp < high) + return true; +} + +bool on_sdei_critical_stack(unsigned long sp, + struct stack_info *info) +{ + unsigned long low = (unsigned long)raw_cpu_read(sdei_stack_critical_ptr); + unsigned long high = low + SDEI_STACK_SIZE; + + if (sp < low || sp >= high) + return false; + + if (info) { + info->low = low; + info->high = high; + info->type = STACK_TYPE_SDEI_CRITICAL; + } + + return true; +} + +bool _on_sdei_stack(unsigned long sp, + struct stack_info *info) +{ + if (!IS_ENABLED(CONFIG_VMAP_STACK)) + return false; + + if (on_sdei_critical_stack(sp, info)) return true; - low = (unsigned long)raw_cpu_read(sdei_stack_normal_ptr); - high = low + SDEI_STACK_SIZE; + if (on_sdei_normal_stack(sp, info)) + return true; - return (low <= sp && sp < high); + return false; } unsigned long sdei_arch_get_entry_point(int conduit) diff --git a/arch/arm64/kernel/stacktrace.c b/arch/arm64/kernel/stacktrace.c index d5718a060672..4989f7ea1e59 100644 --- a/arch/arm64/kernel/stacktrace.c +++ b/arch/arm64/kernel/stacktrace.c @@ -50,7 +50,7 @@ int notrace unwind_frame(struct task_struct *tsk, struct stackframe *frame) if (!tsk) tsk = current; - if (!on_accessible_stack(tsk, fp)) + if (!on_accessible_stack(tsk, fp, NULL)) return -EINVAL; frame->fp = READ_ONCE_NOCHECK(*(unsigned long *)(fp)); |