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- Fix ORC stack unwinding when GCOV is enabled

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Merge tag 'objtool_urgent_for_v6.1_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull objtool fix from Borislav Petkov:

 - Fix ORC stack unwinding when GCOV is enabled

* tag 'objtool_urgent_for_v6.1_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/unwind/orc: Fix unreliable stack dump with gcov
This commit is contained in:
Linus Torvalds 2022-10-23 10:07:01 -07:00
commit 6204a81aa3
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kernel/unwind_orc.c
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@ -713,7 +713,7 @@ void __unwind_start(struct unwind_state *state, struct task_struct *task,
/* Otherwise, skip ahead to the user-specified starting frame: */ /* Otherwise, skip ahead to the user-specified starting frame: */
while (!unwind_done(state) && while (!unwind_done(state) &&
(!on_stack(&state->stack_info, first_frame, sizeof(long)) || (!on_stack(&state->stack_info, first_frame, sizeof(long)) ||
state->sp < (unsigned long)first_frame)) state->sp <= (unsigned long)first_frame))
unwind_next_frame(state); unwind_next_frame(state);
return; return;