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Groups > linux.kernel > #1259402
| From | Will Deacon <will.deacon@arm.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH v4 1/6] arm64: ftrace: adjust callsite addresses examined by stack tracer |
| Date | 2015-10-30 12:20 +0100 |
| Message-ID | <qpfSW-58P-3@gated-at.bofh.it> (permalink) |
| References | <qpaqe-1Jj-1@gated-at.bofh.it> <qpaqe-1Jj-13@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Fri, Oct 30, 2015 at 02:25:36PM +0900, AKASHI Takahiro wrote:
> On arm64, no PC values returned by save_stack_trace() will match to LR
> values saved in stack frames on a stack after the following commit:
> commit e306dfd06fcb ("ARM64: unwind: Fix PC calculation")
> As a result, the output from stack tracer will be messed up.
FWIW, we've decided to revert that patch for the moment. We're the only
architecture making that kind of adjustment, so we should fix that before
building on top of it.
Will
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[PATCH v4 0/6] arm64: ftrace: fix incorrect output from stack tracer AKASHI Takahiro <takahiro.akashi@linaro.org> - 2015-10-30 06:30 +0100
[PATCH v4 5/6] arm64: insn: add instruction decoders for ldp/stp and add/sub AKASHI Takahiro <takahiro.akashi@linaro.org> - 2015-10-30 06:30 +0100
[PATCH v4 1/6] arm64: ftrace: adjust callsite addresses examined by stack tracer AKASHI Takahiro <takahiro.akashi@linaro.org> - 2015-10-30 06:30 +0100
Re: [PATCH v4 1/6] arm64: ftrace: adjust callsite addresses examined by stack tracer Will Deacon <will.deacon@arm.com> - 2015-10-30 12:20 +0100
[PATCH v4 2/6] arm64: ftrace: modify a stack frame in a safe way AKASHI Takahiro <takahiro.akashi@linaro.org> - 2015-10-30 06:30 +0100
[PATCH v4 4/6] ftrace: allow arch-specific stack tracer AKASHI Takahiro <takahiro.akashi@linaro.org> - 2015-10-30 06:30 +0100
[PATCH v4 3/6] arm64: ftrace: fix a stack tracer's output under function graph tracer AKASHI Takahiro <takahiro.akashi@linaro.org> - 2015-10-30 06:30 +0100
[PATCH v4 6/6] arm64: ftrace: add arch-specific stack tracer AKASHI Takahiro <takahiro.akashi@linaro.org> - 2015-10-30 06:30 +0100
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