From: Steven Rostedt <rostedt@goodmis.org>
To: Bhupesh Sharma <bhsharma@igalia.com>
Cc: Petr Mladek <pmladek@suse.com>,
akpm@linux-foundation.org, kernel-dev@igalia.com,
linux-kernel@vger.kernel.org, bpf@vger.kernel.org,
linux-perf-users@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-mm@kvack.org, oliver.sang@intel.com, lkp@intel.com,
laoar.shao@gmail.com, mathieu.desnoyers@efficios.com,
arnaldo.melo@gmail.com, alexei.starovoitov@gmail.com,
andrii.nakryiko@gmail.com, mirq-linux@rere.qmqm.pl,
peterz@infradead.org, willy@infradead.org, david@redhat.com,
viro@zeniv.linux.org.uk, keescook@chromium.org,
ebiederm@xmission.com, brauner@kernel.org, jack@suse.cz,
mingo@redhat.com, juri.lelli@redhat.com, bsegall@google.com,
mgorman@suse.de, vschneid@redhat.com
Subject: Re: [PATCH v3 2/3] treewide: Switch memcpy() users of 'task->comm' to a more safer implementation
Date: Thu, 8 May 2025 10:02:58 -0400 [thread overview]
Message-ID: <20250508100258.5ea70831@gandalf.local.home> (raw)
In-Reply-To: <3fd1dd03-ce1c-37e5-98aa-a91ab5d210b3@igalia.com>
On Thu, 8 May 2025 13:52:01 +0530
Bhupesh Sharma <bhsharma@igalia.com> wrote:
> > [1].
> > https://lore.kernel.org/linux-trace-kernel/20250507133458.51bafd95@gandalf.local.home/
> >
>
> Sorry, pressed the send button too quickly :D
>
> I instead meant - "I plan to rebase my v4 on top of Steven's RFC, which
> might mean that this patch would no longer need to address the trace
> events, but would still need to handle other places where tsk->comm
> directly in memcpy() and replace it with 'get_task_comm()' instead".
Note I didn't switch all the events, just most of the sched events.
This may affect user space that parses the raw events and may expect a hard
coded string instead of a dynamic one (as the sched_switch and sched_waking
events do).
We will need to investigate before we make these changes, which is why I
posted it as a RFC.
-- Steve
next prev parent reply other threads:[~2025-05-08 14:02 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-07 11:04 [PATCH v3 0/3] Add support for long task name Bhupesh
2025-05-07 11:04 ` [PATCH v3 1/3] exec: Remove obsolete comments Bhupesh
2025-05-07 11:04 ` [PATCH v3 2/3] treewide: Switch memcpy() users of 'task->comm' to a more safer implementation Bhupesh
2025-05-07 12:29 ` Petr Mladek
2025-05-08 8:17 ` Bhupesh Sharma
2025-05-08 8:22 ` Bhupesh Sharma
2025-05-08 14:02 ` Steven Rostedt [this message]
2025-05-08 12:21 ` kernel test robot
2025-05-07 11:04 ` [PATCH v3 3/3] exec: Add support for 64 byte 'tsk->real_comm' Bhupesh
2025-05-07 12:54 ` Petr Mladek
2025-05-07 17:23 ` Steven Rostedt
2025-05-08 8:08 ` Bhupesh Sharma
2025-05-08 13:58 ` Steven Rostedt
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