From: Yafang Shao <laoar.shao@gmail.com>
To: akpm@linux-foundation.org
Cc: netdev@vger.kernel.org, bpf@vger.kernel.org,
linux-perf-users@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
oliver.sang@intel.com, lkp@intel.com,
Yafang Shao <laoar.shao@gmail.com>,
Kees Cook <keescook@chromium.org>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Arnaldo Carvalho de Melo <arnaldo.melo@gmail.com>,
Alexei Starovoitov <alexei.starovoitov@gmail.com>,
Andrii Nakryiko <andrii.nakryiko@gmail.com>,
Michal Miroslaw <mirq-linux@rere.qmqm.pl>,
Peter Zijlstra <peterz@infradead.org>,
Steven Rostedt <rostedt@goodmis.org>,
Matthew Wilcox <willy@infradead.org>,
David Hildenbrand <david@redhat.com>,
Al Viro <viro@zeniv.linux.org.uk>, Petr Mladek <pmladek@suse.com>
Subject: [PATCH 1/7] fs/exec: make __set_task_comm always set a nul terminated string
Date: Mon, 8 Nov 2021 08:38:34 +0000 [thread overview]
Message-ID: <20211108083840.4627-2-laoar.shao@gmail.com> (raw)
In-Reply-To: <20211108083840.4627-1-laoar.shao@gmail.com>
Make sure the string set to task comm is always nul terminated.
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Arnaldo Carvalho de Melo <arnaldo.melo@gmail.com>
Cc: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Cc: Andrii Nakryiko <andrii.nakryiko@gmail.com>
Cc: Michal Miroslaw <mirq-linux@rere.qmqm.pl>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Kees Cook <keescook@chromium.org>
Cc: Petr Mladek <pmladek@suse.com>
---
fs/exec.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/exec.c b/fs/exec.c
index a098c133d8d7..404156b5b314 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -1224,7 +1224,7 @@ void __set_task_comm(struct task_struct *tsk, const char *buf, bool exec)
{
task_lock(tsk);
trace_task_rename(tsk, buf);
- strlcpy(tsk->comm, buf, sizeof(tsk->comm));
+ strscpy_pad(tsk->comm, buf, sizeof(tsk->comm));
task_unlock(tsk);
perf_event_comm(tsk, exec);
}
--
2.17.1
next prev parent reply other threads:[~2021-11-08 8:39 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-08 8:38 [PATCH 0/7] task comm cleanups Yafang Shao
2021-11-08 8:38 ` Yafang Shao [this message]
2021-11-10 8:28 ` [PATCH 1/7] fs/exec: make __set_task_comm always set a nul terminated string David Hildenbrand
2021-11-10 9:05 ` Yafang Shao
2021-11-11 9:58 ` David Hildenbrand
2021-11-10 20:17 ` Kees Cook
2021-11-08 8:38 ` [PATCH 2/7] fs/exec: make __get_task_comm always get " Yafang Shao
2021-11-11 9:59 ` David Hildenbrand
2021-11-08 8:38 ` [PATCH 3/7] drivers/infiniband: use get_task_comm instead of open-coded string copy Yafang Shao
2021-11-11 10:01 ` David Hildenbrand
2021-11-08 8:38 ` [PATCH 4/7] fs/binfmt_elf: " Yafang Shao
2021-11-11 10:03 ` David Hildenbrand
2021-11-11 10:06 ` David Hildenbrand
2021-11-11 11:34 ` Petr Mladek
2021-11-11 11:47 ` David Hildenbrand
2021-11-12 1:08 ` Yafang Shao
2021-11-12 1:03 ` Yafang Shao
2021-11-08 8:38 ` [PATCH 5/7] samples/bpf/test_overhead_kprobe_kern: make it adopt to task comm size change Yafang Shao
2021-11-08 18:20 ` Andrii Nakryiko
2021-11-11 10:07 ` David Hildenbrand
2021-11-08 8:38 ` [PATCH 6/7] tools/bpf/bpftool/skeleton: use bpf_probe_read_kernel_str to get task comm Yafang Shao
2021-11-11 10:08 ` David Hildenbrand
2021-11-08 8:38 ` [PATCH 7/7] tools/testing/selftests/bpf: make it adopt to task comm size change Yafang Shao
2021-11-11 10:11 ` David Hildenbrand
2021-11-09 18:28 ` [PATCH 0/7] task comm cleanups Kees Cook
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