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| author | Lizhi Xu <lizhi.xu@windriver.com> | 2024-12-16 15:32:38 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-01-09 13:25:04 +0100 |
| commit | 2558d753df0628d4187d8e1fd989339460f4f364 (patch) | |
| tree | a7529b73d6a035de98924b79275759e6cf5a4185 /scripts/gcc-plugins/sancov_plugin.c | |
| parent | 1bf53a2145fa416e3c6825c7d3c267f4b7e32e24 (diff) | |
tracing: Prevent bad count for tracing_cpumask_write
[ Upstream commit 98feccbf32cfdde8c722bc4587aaa60ee5ac33f0 ]
If a large count is provided, it will trigger a warning in bitmap_parse_user.
Also check zero for it.
Cc: stable@vger.kernel.org
Fixes: 9e01c1b74c953 ("cpumask: convert kernel trace functions")
Link: https://lore.kernel.org/20241216073238.2573704-1-lizhi.xu@windriver.com
Reported-by: syzbot+0aecfd34fb878546f3fd@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=0aecfd34fb878546f3fd
Tested-by: syzbot+0aecfd34fb878546f3fd@syzkaller.appspotmail.com
Signed-off-by: Lizhi Xu <lizhi.xu@windriver.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'scripts/gcc-plugins/sancov_plugin.c')
0 files changed, 0 insertions, 0 deletions