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| author | Ingo Molnar <mingo@kernel.org> | 2020-02-24 13:36:09 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2020-02-24 13:36:09 +0300 |
| commit | 546121b65f47384e11ec1fa2e55449fc9f4846b2 (patch) | |
| tree | 8f18470ec7c0c77b0f48eb1b2338e591b0b0aaff /arch/powerpc/oprofile/backtrace.c | |
| parent | 000619680c3714020ce9db17eef6a4a7ce2dc28b (diff) | |
| parent | f8788d86ab28f61f7b46eb6be375f8a726783636 (diff) | |
| download | linux-546121b65f47384e11ec1fa2e55449fc9f4846b2.tar.xz | |
Merge tag 'v5.6-rc3' into sched/core, to pick up fixes and dependent patches
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/powerpc/oprofile/backtrace.c')
| -rw-r--r-- | arch/powerpc/oprofile/backtrace.c | 16 |
1 files changed, 3 insertions, 13 deletions
diff --git a/arch/powerpc/oprofile/backtrace.c b/arch/powerpc/oprofile/backtrace.c index 43245f4a9bcb..6f347fa29f41 100644 --- a/arch/powerpc/oprofile/backtrace.c +++ b/arch/powerpc/oprofile/backtrace.c @@ -9,7 +9,7 @@ #include <linux/sched.h> #include <asm/processor.h> #include <linux/uaccess.h> -#include <asm/compat.h> +#include <linux/compat.h> #include <asm/oprofile_impl.h> #define STACK_SP(STACK) *(STACK) @@ -28,15 +28,12 @@ static unsigned int user_getsp32(unsigned int sp, int is_first) unsigned int stack_frame[2]; void __user *p = compat_ptr(sp); - if (!access_ok(p, sizeof(stack_frame))) - return 0; - /* * The most likely reason for this is that we returned -EFAULT, * which means that we've done all that we can do from * interrupt context. */ - if (__copy_from_user_inatomic(stack_frame, p, sizeof(stack_frame))) + if (probe_user_read(stack_frame, (void __user *)p, sizeof(stack_frame))) return 0; if (!is_first) @@ -54,11 +51,7 @@ static unsigned long user_getsp64(unsigned long sp, int is_first) { unsigned long stack_frame[3]; - if (!access_ok((void __user *)sp, sizeof(stack_frame))) - return 0; - - if (__copy_from_user_inatomic(stack_frame, (void __user *)sp, - sizeof(stack_frame))) + if (probe_user_read(stack_frame, (void __user *)sp, sizeof(stack_frame))) return 0; if (!is_first) @@ -103,7 +96,6 @@ void op_powerpc_backtrace(struct pt_regs * const regs, unsigned int depth) first_frame = 0; } } else { - pagefault_disable(); #ifdef CONFIG_PPC64 if (!is_32bit_task()) { while (depth--) { @@ -112,7 +104,6 @@ void op_powerpc_backtrace(struct pt_regs * const regs, unsigned int depth) break; first_frame = 0; } - pagefault_enable(); return; } #endif @@ -123,6 +114,5 @@ void op_powerpc_backtrace(struct pt_regs * const regs, unsigned int depth) break; first_frame = 0; } - pagefault_enable(); } } |