From: sashiko-bot@kernel.org
To: "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
Cc: linux-trace-kernel@vger.kernel.org
Subject: Re: [PATCH 08/12] tracing/probes: Reject array count on non-dereference string sources
Date: Mon, 09 Nov 2026 00:41:41 +0000 [thread overview]
Message-ID: <sashiko-outbox-204240@kernel.org> (raw)
In-Reply-To: <179418415672.227715.15166570338029977087.stgit@devnote2>
Thank you for your contribution! Sashiko AI review found 1 potential
issue to consider:
- [Low] tracing/probes: missing Fixes trailer for string array support
commit
--
commit 78c886d046541847b05a6f45643e9267eae178e0
Author: Masami Hiramatsu (Google) <mhiramat@kernel.org>
> tracing/probes: Reject array count on non-dereference string sources
>
> The runtime array loop (FETCH_OP_LP_ARRAY) for string types requires a
> preceding memory dereference instruction so it can advance the pointer
> address on each iteration. Non-dereference string sources such as $comm,
> immediate strings, and eprobe event fields cannot be indexed as pointer
> arrays, but finalize_fetch_insn() still accepts an array count on them
> and emits an invalid FETCH_OP_LP_ARRAY sequence.
>
> Reject string array counts when the preceding operation is not a memory
> dereference.
>
> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
[Severity: Low]
This looks like a bug fix for string array support. Should this include:
Fixes: 40b53b771806 ("tracing: probeevent: Add array type support")
--
Sashiko AI review · https://sashiko.dev/#/patchset/179418408457.227715.1485179201014819821.stgit@devnote2?part=8
next prev parent reply other threads:[~2026-11-09 0:41 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-09 0:28 [PATCH 00/12] tracing/probes: Fix various bugs in dynamic probe events Masami Hiramatsu (Google)
2026-11-09 0:28 ` [PATCH 01/12] tracing/probes: Check enabled and busy state before unlinking sibling probes Masami Hiramatsu (Google)
2026-11-09 0:28 ` [PATCH 02/12] tracing/probes: Enable newly appended probe when target event is enabled Masami Hiramatsu (Google)
2026-11-09 0:28 ` [PATCH 03/12] tracing/probes: Fix BTF bitfield parsing and out-of-bounds buffer write Masami Hiramatsu (Google)
2026-11-09 0:45 ` sashiko-bot
2026-11-09 0:28 ` [PATCH 04/12] tracing/probes: Fix missing BTF kind checks in char pointer/array helpers Masami Hiramatsu (Google)
2026-11-09 0:28 ` [PATCH 05/12] tracing/eprobe: Fix 1-byte signed field fetch in get_event_field() Masami Hiramatsu (Google)
2026-11-09 0:28 ` [PATCH 06/12] tracing/eprobe: Disallow attaching eprobes to fprobe events Masami Hiramatsu (Google)
2026-11-09 0:29 ` [PATCH 07/12] tracing/probes: Fix user-space dereference string array store type Masami Hiramatsu (Google)
2026-11-09 0:29 ` [PATCH 08/12] tracing/probes: Reject array count on non-dereference string sources Masami Hiramatsu (Google)
2026-11-09 0:41 ` sashiko-bot [this message]
2026-11-09 0:29 ` [PATCH 09/12] tracing/probes: Allow symstr type for function entry arguments in return probes Masami Hiramatsu (Google)
2026-11-09 0:29 ` [PATCH 10/12] tracing/probes: Reject empty fetch expression for %pd and %pD Masami Hiramatsu (Google)
2026-11-09 0:29 ` [PATCH 11/12] tracing/probes: Validate command prefix in kprobe, uprobe, and eprobe Masami Hiramatsu (Google)
2026-11-09 0:47 ` sashiko-bot
2026-11-09 0:29 ` [PATCH 12/12] tracing/probes: Propagate error codes in eprobe and fprobe creation Masami Hiramatsu (Google)
2026-11-09 0:46 ` sashiko-bot
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