diff options
| author | Maik Hampel <m.hampel@gmx.de> | 2007-07-31 00:37:57 -0700 |
|---|---|---|
| committer | Willy Tarreau <w@1wt.eu> | 2007-08-25 17:24:07 +0200 |
| commit | a14008cfca3a2026f09c91f2a96b26bcc507cd92 (patch) | |
| tree | 084f69b4dcc5c0ff20830cfa629776cad40574d4 | |
| parent | 32c207fa861f29aad527039da70556b5c387a2be (diff) | |
[PATCH] 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>
Signed-off-by: Willy Tarreau <w@1wt.eu>
| -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" |