The following commit has been merged into the x86/urgent branch of tip: Commit-ID: d072f941c1e234f8495cc4828370b180318bf49b Gitweb: https://git.kernel.org/tip/d072f941c1e234f8495cc4828370b180318bf49b Author: Josh Poimboeuf <[email protected]> AuthorDate: Fri, 05 Feb 2021 08:24:03 -06:00 Committer: Borislav Petkov <[email protected]> CommitterDate: Sat, 06 Mar 2021 11:37:00 +01:00
x86/unwind/orc: Silence warnings caused by missing ORC data The ORC unwinder attempts to fall back to frame pointers when ORC data is missing for a given instruction. It sets state->error, but then tries to keep going as a best-effort type of thing. That may result in further warnings if the unwinder gets lost. Until we have some way to register generated code with the unwinder, missing ORC will be expected, and occasionally going off the rails will also be expected. So don't warn about it. Signed-off-by: Josh Poimboeuf <[email protected]> Signed-off-by: Peter Zijlstra (Intel) <[email protected]> Tested-by: Ivan Babrou <[email protected]> Link: https://lkml.kernel.org/r/06d02c4bbb220bd31668db579278b0352538efbb.1612534649.git.jpoim...@redhat.com --- arch/x86/kernel/unwind_orc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/unwind_orc.c b/arch/x86/kernel/unwind_orc.c index 1bcc14c..a120253 100644 --- a/arch/x86/kernel/unwind_orc.c +++ b/arch/x86/kernel/unwind_orc.c @@ -13,7 +13,7 @@ #define orc_warn_current(args...) \ ({ \ - if (state->task == current) \ + if (state->task == current && !state->error) \ orc_warn(args); \ })
