diff options
| author | Maik Hampel <m.hampel@gmx.de> | 2007-07-31 00:37:57 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-08-09 14:27:36 -0700 |
| commit | 058bfc1cc6700c210024dd9fd391ea8fbbb6c91a (patch) | |
| tree | d894786333b4e7f42309278a23fb6cdb845ffd08 /drivers | |
| parent | 1eb34652551146be64def511d34a02178d9b00cd (diff) | |
md: raid10: fix use-after-free of bio
In case of read errors raid10d tries to print a nice error message,
unfortunately using data from an already put bio.
Signed-off-by: Maik Hampel <m.hampel@gmx.de>
Acked-By: NeilBrown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/md/raid10.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index fb5d9c6e9de0..e0029ea92dbd 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -1565,7 +1565,6 @@ static void raid10d(mddev_t *mddev) bio = r10_bio->devs[r10_bio->read_slot].bio; r10_bio->devs[r10_bio->read_slot].bio = mddev->ro ? IO_BLOCKED : NULL; - bio_put(bio); mirror = read_balance(conf, r10_bio); if (mirror == -1) { printk(KERN_ALERT "raid10: %s: unrecoverable I/O" @@ -1573,8 +1572,10 @@ static void raid10d(mddev_t *mddev) bdevname(bio->bi_bdev,b), (unsigned long long)r10_bio->sector); raid_end_bio_io(r10_bio); + bio_put(bio); } else { const int do_sync = bio_sync(r10_bio->master_bio); + bio_put(bio); rdev = conf->mirrors[mirror].rdev; if (printk_ratelimit()) printk(KERN_ERR "raid10: %s: redirecting sector %llu to" |