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authorLinus Torvalds <torvalds@linux-foundation.org>2019-06-29 19:42:30 +0800
committerLinus Torvalds <torvalds@linux-foundation.org>2019-06-29 19:42:30 +0800
commit728254541ebcc7fee869c3c4c3f36f96be791edb (patch)
tree7a49c04a3a933db926e9492b45106fc7f4cf696e /arch/x86/events
parent57103eb7c6cad04c0611b7a5767a381b34b8b0ab (diff)
parentae6a45a0868986f69039a2150d3b2b9ca294c378 (diff)
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar: "Misc fixes all over the place: - might_sleep() atomicity fix in the microcode loader - resctrl boundary condition fix - APIC arithmethics bug fix for frequencies >= 4.2 GHz - three 5-level paging crash fixes - two speculation fixes - a perf/stacktrace fix" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/unwind/orc: Fall back to using frame pointers for generated code perf/x86: Always store regs->ip in perf_callchain_kernel() x86/speculation: Allow guests to use SSBD even if host does not x86/mm: Handle physical-virtual alignment mismatch in phys_p4d_init() x86/boot/64: Add missing fixup_pointer() for next_early_pgt access x86/boot/64: Fix crash if kernel image crosses page table boundary x86/apic: Fix integer overflow on 10 bit left shift of cpu_khz x86/resctrl: Prevent possible overrun during bitmap operations x86/microcode: Fix the microcode load on CPU hotplug for real
Diffstat (limited to 'arch/x86/events')
-rw-r--r--arch/x86/events/core.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/x86/events/core.c b/arch/x86/events/core.c
index 52a97463cb24..3cd94a21bd53 100644
--- a/arch/x86/events/core.c
+++ b/arch/x86/events/core.c
@@ -2402,13 +2402,13 @@ perf_callchain_kernel(struct perf_callchain_entry_ctx *entry, struct pt_regs *re
return;
}
- if (perf_hw_regs(regs)) {
- if (perf_callchain_store(entry, regs->ip))
- return;
+ if (perf_callchain_store(entry, regs->ip))
+ return;
+
+ if (perf_hw_regs(regs))
unwind_start(&state, current, regs, NULL);
- } else {
+ else
unwind_start(&state, current, NULL, (void *)regs->sp);
- }
for (; !unwind_done(&state); unwind_next_frame(&state)) {
addr = unwind_get_return_address(&state);