diff options
| author | Mikulas Patocka <mpatocka@redhat.com> | 2023-03-06 11:17:58 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-04-05 11:15:38 +0200 |
| commit | 7b9f8efb5fc888dd938d2964e705b8e00f1dc0f6 (patch) | |
| tree | aaaf3ee97b9eb07827a2bc5243697937cd47bb9d /kernel | |
| parent | 0d96bd507ed7e7d565b6d53ebd3874686f123b2e (diff) | |
dm crypt: add cond_resched() to dmcrypt_write()
commit fb294b1c0ba982144ca467a75e7d01ff26304e2b upstream.
The loop in dmcrypt_write may be running for unbounded amount of time,
thus we need cond_resched() in it.
This commit fixes the following warning:
[ 3391.153255][ C12] watchdog: BUG: soft lockup - CPU#12 stuck for 23s! [dmcrypt_write/2:2897]
...
[ 3391.387210][ C12] Call trace:
[ 3391.390338][ C12] blk_attempt_bio_merge.part.6+0x38/0x158
[ 3391.395970][ C12] blk_attempt_plug_merge+0xc0/0x1b0
[ 3391.401085][ C12] blk_mq_submit_bio+0x398/0x550
[ 3391.405856][ C12] submit_bio_noacct+0x308/0x380
[ 3391.410630][ C12] dmcrypt_write+0x1e4/0x208 [dm_crypt]
[ 3391.416005][ C12] kthread+0x130/0x138
[ 3391.419911][ C12] ret_from_fork+0x10/0x18
Reported-by: yangerkun <yangerkun@huawei.com>
Fixes: dc2676210c42 ("dm crypt: offload writes to thread")
Cc: stable@vger.kernel.org
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions