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| author | Tao Ma <boyu.mt@taobao.com> | 2011-03-23 15:48:11 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2011-03-23 15:48:11 -0400 |
| commit | 0ba0851714beebb800992e5105a79dc3a4c504b0 (patch) | |
| tree | 290b4f679fc86877df068ae4193101dc583f424f /Documentation | |
| parent | 65922cb5ced76ba7182e955d4aada96f93446b1a (diff) | |
| download | linux-0ba0851714beebb800992e5105a79dc3a4c504b0.tar.bz2 | |
ext4: fix a BUG in mb_mark_used during trim.
In a bs=4096 volume, if we call FITRIM with the following parameter as
fstrim_range(start = 102400, len = 134144000, minlen = 10240),
we will trigger this BUG_ON:
BUG_ON(start + len > (e4b->bd_sb->s_blocksize << 3));
Mar 4 00:55:52 boyu-tm kernel: ------------[ cut here ]------------
Mar 4 00:55:52 boyu-tm kernel: kernel BUG at fs/ext4/mballoc.c:1506!
Mar 4 01:21:09 boyu-tm kernel: Code: d4 00 00 00 00 49 89 fe 8b 56 0c 44 8b 7e 04 89 55 c4 48 8b 4f 28 89 d6 44 01 fe 48 63 d6 48 8b 41 18 48 c1 e0 03 48 39 c2 76 04 <0f> 0b eb fe 48 8b 55 b0 8b 47 34 3b 42 08 74 04 0f 0b eb fe 48
Mar 4 01:21:09 boyu-tm kernel: RIP [<ffffffffa053eb42>] mb_mark_used+0x47/0x26c [ext4]
Mar 4 01:21:09 boyu-tm kernel: RSP <ffff880121e45c38>
Mar 4 01:21:09 boyu-tm kernel: ---[ end trace 9f461696f6a9dcf2 ]---
Fix this bug by doing the accounting correctly.
Cc: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Tao Ma <boyu.mt@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions