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| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-08 16:59:34 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-08 16:59:34 -0700 |
| commit | a1aab6f3d295f078c008893ee7fa2c011626c46f (patch) | |
| tree | 1ae344c8ed1b1dc531be1ae99188c180ad0c6c7c /arch/x86/kernel/time.c | |
| parent | Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip (diff) | |
| parent | x86/alternatives: Add int3_emulate_call() selftest (diff) | |
| download | linux-dev-a1aab6f3d295f078c008893ee7fa2c011626c46f.tar.xz linux-dev-a1aab6f3d295f078c008893ee7fa2c011626c46f.zip | |
Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 asm updates from Ingo Molnar:
"Most of the changes relate to Peter Zijlstra's cleanup of ptregs
handling, in particular the i386 part is now much simplified and
standardized - no more partial ptregs stack frames via the esp/ss
oddity. This simplifies ftrace, kprobes, the unwinder, ptrace, kdump
and kgdb.
There's also a CR4 hardening enhancements by Kees Cook, to make the
generic platform functions such as native_write_cr4() less useful as
ROP gadgets that disable SMEP/SMAP. Also protect the WP bit of CR0
against similar attacks.
The rest is smaller cleanups/fixes"
* 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/alternatives: Add int3_emulate_call() selftest
x86/stackframe/32: Allow int3_emulate_push()
x86/stackframe/32: Provide consistent pt_regs
x86/stackframe, x86/ftrace: Add pt_regs frame annotations
x86/stackframe, x86/kprobes: Fix frame pointer annotations
x86/stackframe: Move ENCODE_FRAME_POINTER to asm/frame.h
x86/entry/32: Clean up return from interrupt preemption path
x86/asm: Pin sensitive CR0 bits
x86/asm: Pin sensitive CR4 bits
Documentation/x86: Fix path to entry_32.S
x86/asm: Remove unused TASK_TI_flags from asm-offsets.c
Diffstat (limited to 'arch/x86/kernel/time.c')
| -rw-r--r-- | arch/x86/kernel/time.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/x86/kernel/time.c b/arch/x86/kernel/time.c index 07c0e960b3f3..7ce29cee9f9e 100644 --- a/arch/x86/kernel/time.c +++ b/arch/x86/kernel/time.c @@ -37,8 +37,7 @@ unsigned long profile_pc(struct pt_regs *regs) #ifdef CONFIG_FRAME_POINTER return *(unsigned long *)(regs->bp + sizeof(long)); #else - unsigned long *sp = - (unsigned long *)kernel_stack_pointer(regs); + unsigned long *sp = (unsigned long *)regs->sp; /* * Return address is either directly at stack pointer * or above a saved flags. Eflags has bits 22-31 zero, |