linux-kernel - Re: [PATCH] tracing/net_sched: NULL pointer dereference in perf_trace_qdisc

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Message-ID: <20240703191835.2cc2606f@kernel.org>
Date: Wed, 3 Jul 2024 19:18:35 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Yunseong Kim <yskelg@...il.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org,
 Paolo Abeni <pabeni@...hat.com>, Sasha Levin <sashal@...nel.org>, Steven
 Rostedt <rostedt@...dmis.org>, Taehee Yoo <ap420073@...il.com>, Pedro
 Tammela <pctammela@...atatu.com>, Austin Kim <austindh.kim@...il.com>,
 MichelleJin <shjy180909@...il.com>, linux-kernel@...r.kernel.org,
 linux-trace-kernel@...r.kernel.org, netdev@...r.kernel.org,
 ppbuk5246@...il.com, Yeoreum Yun <yeoreum.yun@....com>
Subject: Re: [PATCH] tracing/net_sched: NULL pointer dereference in
 perf_trace_qdisc_reset()

On Wed,  3 Jul 2024 03:01:47 +0900 Yunseong Kim wrote:
> Support backports for stable version. There are two places where null
> deref could happen before
> commit 2c92ca849fcc ("tracing/treewide: Remove second parameter of __assign_str()")
> Link: https://lore.kernel.org/linux-trace-kernel/20240516133454.681ba6a0@rorschach.local.home/
> 
> I've checked +v6.1.82 +v6.6.22 +v6.7.10, +v6.8, +6.9, this version need
> to be applied, So, I applied the patch, tested it again, and confirmed
> working fine.

You're missing the customary "[ Upstream commit <upstream commit> ]"
line, not sure Greg will pick this up.