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authorLinus Torvalds <torvalds@linux-foundation.org>2018-01-03 16:41:07 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2018-01-03 16:41:07 -0800
commit00a5ae218d57741088068799b810416ac249a9ce (patch)
treee4def71f5558377de6f536e96524fe808b2d378e /arch/x86/kernel/stacktrace.c
parentd6bbd51587ecd173958453969964fb41140b1540 (diff)
parent2fd9c41aea47f4ad071accf94b94f94f2c4d31eb (diff)
downloadlinux-00a5ae218d57741088068799b810416ac249a9ce.tar.bz2
Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 page table isolation fixes from Thomas Gleixner: "A couple of urgent fixes for PTI: - Fix a PTE mismatch between user and kernel visible mapping of the cpu entry area (differs vs. the GLB bit) and causes a TLB mismatch MCE on older AMD K8 machines - Fix the misplaced CR3 switch in the SYSCALL compat entry code which causes access to unmapped kernel memory resulting in double faults. - Fix the section mismatch of the cpu_tss_rw percpu storage caused by using a different mechanism for declaration and definition. - Two fixes for dumpstack which help to decode entry stack issues better - Enable PTI by default in Kconfig. We should have done that earlier, but it slipped through the cracks. - Exclude AMD from the PTI enforcement. Not necessarily a fix, but if AMD is so confident that they are not affected, then we should not burden users with the overhead" * 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/process: Define cpu_tss_rw in same section as declaration x86/pti: Switch to kernel CR3 at early in entry_SYSCALL_compat() x86/dumpstack: Print registers for first stack frame x86/dumpstack: Fix partial register dumps x86/pti: Make sure the user/kernel PTEs match x86/cpu, x86/pti: Do not enable PTI on AMD processors x86/pti: Enable PTI by default
Diffstat (limited to 'arch/x86/kernel/stacktrace.c')
-rw-r--r--arch/x86/kernel/stacktrace.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/stacktrace.c b/arch/x86/kernel/stacktrace.c
index 20161ef53537..093f2ea5dd56 100644
--- a/arch/x86/kernel/stacktrace.c
+++ b/arch/x86/kernel/stacktrace.c
@@ -102,7 +102,7 @@ __save_stack_trace_reliable(struct stack_trace *trace,
for (unwind_start(&state, task, NULL, NULL); !unwind_done(&state);
unwind_next_frame(&state)) {
- regs = unwind_get_entry_regs(&state);
+ regs = unwind_get_entry_regs(&state, NULL);
if (regs) {
/*
* Kernel mode registers on the stack indicate an