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| author | Gui-Dong Han <hanguidong02@gmail.com> | 2026-03-23 16:58:44 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-04-02 16:15:23 +0200 |
| commit | 31de83980d3764d784f79ff1bc93c42b324f4013 (patch) | |
| tree | 52e36dd88ec09d7d5a715130b2f86cd81d3e455a /Documentation/controllers/git@git.tavy.me:linux.git | |
| parent | 56e3ee721b33bdc4ce0765d370983aa4384f8a59 (diff) | |
debugfs: check for NULL pointer in debugfs_create_str()
Passing a NULL pointer to debugfs_create_str() leads to a NULL pointer
dereference when the debugfs file is read. Following upstream
discussions, forbid the creation of debugfs string files with NULL
pointers. Add a WARN_ON() to expose offending callers and return early.
Fixes: 9af0440ec86e ("debugfs: Implement debugfs_create_str()")
Reported-by: yangshiguang <yangshiguang@xiaomi.com>
Closes: https://lore.kernel.org/lkml/2025122221-gag-malt-75ba@gregkh/
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Gui-Dong Han <hanguidong02@gmail.com>
Link: https://patch.msgid.link/20260323085930.88894-2-hanguidong02@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/controllers/git@git.tavy.me:linux.git')
0 files changed, 0 insertions, 0 deletions