• Vasily Averin's avatar
    ext4: missing !bh check in ext4_xattr_inode_write() · eb6984fa
    Vasily Averin authored
    According to Ted Ts'o ext4_getblk() called in ext4_xattr_inode_write()
    should not return bh = NULL
    
    The only time that bh could be NULL, then, would be in the case of
    something really going wrong; a programming error elsewhere (perhaps a
    wild pointer dereference) or I/O error causing on-disk file system
    corruption (although that would be highly unlikely given that we had
    *just* allocated the blocks and so the metadata blocks in question
    probably would still be in the cache).
    
    Fixes: e50e5129 ("ext4: xattr-in-inode support")
    Signed-off-by: default avatarVasily Averin <vvs@virtuozzo.com>
    Signed-off-by: default avatarTheodore Ts'o <tytso@mit.edu>
    Cc: stable@kernel.org # 4.13
    eb6984fa
xattr.c 81.6 KB