xfs: Correctly lock inode when removing suid and file capabilities

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Currently XFS calls file_remove_privs() without holding i_mutex. This is
wrong because that function can end up messing with file permissions and
file capabilities stored in xattrs for which we need i_mutex held.

Fix the problem by grabbing iolock exclusively when we will need to
change anything in permissions / xattrs.

Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

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Jan Kara 2015-05-21 16:05:56 +02:00 • committed by Al Viro

parent 45f147a1bc

commit a6de82cab1

1 changed files with 10 additions and 1 deletions

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fs/xfs/xfs_file.c

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