From: sashiko-bot@kernel.org
To: lv.yating@zte.com.cn
Cc: linux-perf-users@vger.kernel.org
Subject: Re: [PATCH] perf test: Add LBR call stack branch filter test
Date: Mon, 02 Nov 2026 12:36:48 +0000 [thread overview]
Message-ID: <sashiko-outbox-193429@kernel.org> (raw)
In-Reply-To: <202611021227.6A2CRwkO000175@mse-fl1.zte.com.cn>
> From: lvyating <lv.yating@zte.com.cn>
>
> While debugging a NULL deref in resolve_lbr_callchain_sample()
> triggered by "perf record -j stack" (fixed in commit
> 4626d370ae89b8af4d46a45372b269f926ec662d "perf machine:
> Fix NULL deref in thread__resolve_callchain_sample()"), the "-j
> stack" filter was found to lack coverage in the perf record LBR
> tests.
>
> Add "call stack" tests, sequentially and in parallel.
> Use a 100% empty stack threshold, as with ind_jmp and ind_call,u,
> since the stack filter is more restrictive and can leave branch
> stacks empty more often.
>
> Signed-off-by: lvyating <lv.yating@zte.com.cn>
Sashiko has reviewed this patch and found no issues.
--
Sashiko AI review · https://sashiko.dev/#/patchset/202611021227.6A2CRwkO000175@mse-fl1.zte.com.cn?part=1
next prev parent reply other threads:[~2026-11-02 12:36 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-02 11:02 [PATCH] perf test: Add LBR call stack branch filter test lv.yating
2026-11-02 12:36 ` sashiko-bot [this message]
2026-11-10 2:52 ` Namhyung Kim
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