1. 22 Feb, 2024 1 commit
    • Kees Cook's avatar
      pstore: inode: Only d_invalidate() is needed · a43e0fc5
      Kees Cook authored
      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: default avatarAlexander Viro <viro@zeniv.linux.org.uk>
      Fixes: 609e28bb ("pstore: Remove filesystem records when backend is unregistered")
      Signed-off-by: default avatarKees Cook <keescook@chromium.org>
      ---
      Cc: "Guilherme G. Piccoli" <gpiccoli@igalia.com>
      Cc: Tony Luck <tony.luck@intel.com>
      Cc: linux-hardening@vger.kernel.org
      a43e0fc5
  2. 29 Jan, 2024 1 commit
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  5. 26 Jan, 2024 22 commits