ext4: add lockdep annotations for i_data_sem for ea_inode's

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commit aff3bea953 upstream.

Treat i_data_sem for ea_inodes as being in their own lockdep class to
avoid lockdep complaints about ext4_setattr's use of inode_lock() on
normal inodes potentially causing lock ordering with i_data_sem on
ea_inodes in ext4_xattr_inode_write().  However, ea_inodes will be
operated on by ext4_setattr(), so this isn't a problem.

Cc: stable@kernel.org
Link: https://syzkaller.appspot.com/bug?extid=298c5d8fb4a128bc27b0
Reported-by: syzbot+298c5d8fb4a128bc27b0@syzkaller.appspotmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Link: https://lore.kernel.org/r/20230524034951.779531-5-tytso@mit.edu
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Theodore Ts'o 2023-05-23 23:49:51 -04:00 • committed by Greg Kroah-Hartman

parent 140aa33f96

commit ef8aeffb2c

2 changed files with 6 additions and 0 deletions

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2

fs/ext4/ext4.h

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4

fs/ext4/xattr.c

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