From: Josh Poimboeuf Date: Fri, 5 Feb 2021 14:24:03 +0000 (-0600) Subject: x86/unwind/orc: Silence warnings caused by missing ORC data X-Git-Tag: Ubuntu-5.13.0-19.19~3716^2~5 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=b59cc97674c947861783ca92b9a6e7d043adba96;p=mirror_ubuntu-jammy-kernel.git 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 Signed-off-by: Peter Zijlstra (Intel) Signed-off-by: Borislav Petkov Tested-by: Ivan Babrou Link: https://lkml.kernel.org/r/06d02c4bbb220bd31668db579278b0352538efbb.1612534649.git.jpoimboe@redhat.com --- diff --git a/arch/x86/kernel/unwind_orc.c b/arch/x86/kernel/unwind_orc.c index 1bcc14c870ab..a1202536fc57 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); \ })