On Fri, 19 Mar 2021 18:41:06 +0000, Mark Rutland wrote: > We recently converted arm64 to use arch_stack_walk() in commit: > > 5fc57df2f6fd ("arm64: stacktrace: Convert to ARCH_STACKWALK") > > The core stacktrace code expects that (when tracing the current task) > arch_stack_walk() starts a trace at its caller, and does not include > itself in the trace. However, arm64's arch_stack_walk() includes itself, > and so traces include one more entry than callers expect. The core > stacktrace code which calls arch_stack_walk() tries to skip a number of > entries to prevent itself appearing in a trace, and the additional entry > prevents skipping one of the core stacktrace functions, leaving this in > the trace unexpectedly. > > [...]
Applied to arm64 (for-next/fixes), thanks! [1/1] arm64: stacktrace: don't trace arch_stack_walk() https://git.kernel.org/arm64/c/c607ab4f916d Cheers, -- Will https://fixes.arm64.dev https://next.arm64.dev https://will.arm64.dev