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(parent: 462f4e6) | patch
ext4: Avoid underflow in ext4_trim_fs()
authorLukas Czerner <lczerner@redhat.com>
Mon, 22 Oct 2012 22:01:19 +0000 (18:01 -0400)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sun, 28 Oct 2012 17:56:09 +0000 (10:56 -0700)
commitb1f9e723563c5dae07c0c8d49b21ea9602c3e644
tree9fb03e922e4caa6d5a45b969d11dc55745f04878tree | snapshot
parent462f4e60ea80fc6d82b872243c4d11a9f8286d0dcommit | diff
ext4: Avoid underflow in ext4_trim_fs()

commit 5de35e8d5c02d271c20e18337e01bc20e6ef472e upstream.

Currently if len argument in ext4_trim_fs() is smaller than one block,
the 'end' variable underflow. Avoid that by returning EINVAL if len is
smaller than file system block.

Also remove useless unlikely().

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
fs/ext4/mballoc.c diff | blob | history
Linux kernel for KaRo TX COM modules