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[ Upstream commita43e0fc5e9] Unloading a modular pstore backend with records in pstorefs would trigger the dput() double-drop warning: WARNING: CPU: 0 PID: 2569 at fs/dcache.c:762 dput.part.0+0x3f3/0x410 Using the combo of d_drop()/dput() (as mentioned in Documentation/filesystems/vfs.rst) isn't the right approach here, and leads to the reference counting problem seen above. Use d_invalidate() and update the code to not bother checking for error codes that can never happen. Suggested-by: Alexander Viro <viro@zeniv.linux.org.uk> Fixes:609e28bb13("pstore: Remove filesystem records when backend is unregistered") Signed-off-by: Kees Cook <keescook@chromium.org>
493 lines
11 KiB
493 lines
11 KiB