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Fix frame pointer unwinder when it encounters FRED stack frames

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Merge tag 'x86_entry_for_7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 entry update from Dave Hansen:
 "Fix frame pointer unwinder when it encounters FRED stack frames"

* tag 'x86_entry_for_7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/entry/fred: Encode frame pointer on entry
This commit is contained in:
Linus Torvalds 2026-08-18 17:38:30 -07:00
commit 23eb790181
1 changed files with 2 additions and 0 deletions
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2
arch/x86/entry/entry_64_fred.S
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@ -7,6 +7,7 @@
#include <linux/kvm_types.h>
#include <asm/asm.h>
#include <asm/frame.h>
#include <asm/fred.h>
#include <asm/segment.h>
@ -19,6 +20,7 @@
UNWIND_HINT_END_OF_STACK
ANNOTATE_NOENDBR
PUSH_AND_CLEAR_REGS
ENCODE_FRAME_POINTER
movq %rsp, %rdi /* %rdi -> pt_regs */
.endm