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| author | Alexey Dobriyan <adobriyan@gmail.com> | 2020-02-12 23:23:20 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-04-17 10:48:39 +0200 |
| commit | fe5b2e54d6c639996d29a2840c9335c9a446361e (patch) | |
| tree | f30720bd7061970751a59623b5a612a42354b159 /drivers/block | |
| parent | 3e57e69bb3a6767b8a9e2c95ebb4e3adcbda6c4b (diff) | |
| download | linux-stable-fe5b2e54d6c639996d29a2840c9335c9a446361e.tar.gz linux-stable-fe5b2e54d6c639996d29a2840c9335c9a446361e.tar.bz2 linux-stable-fe5b2e54d6c639996d29a2840c9335c9a446361e.zip | |
null_blk: fix spurious IO errors after failed past-wp access
[ Upstream commit ff77042296d0a54535ddf74412c5ae92cb4ec76a ]
Steps to reproduce:
BLKRESETZONE zone 0
// force EIO
pwrite(fd, buf, 4096, 4096);
[issue more IO including zone ioctls]
It will start failing randomly including IO to unrelated zones because of
->error "reuse". Trigger can be partition detection as well if test is not
run immediately which is even more entertaining.
The fix is of course to clear ->error where necessary.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alexey Dobriyan (SK hynix) <adobriyan@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/null_blk_main.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/block/null_blk_main.c b/drivers/block/null_blk_main.c index 78355a0e61db..d2d7dc9cd58d 100644 --- a/drivers/block/null_blk_main.c +++ b/drivers/block/null_blk_main.c @@ -571,6 +571,7 @@ static struct nullb_cmd *__alloc_cmd(struct nullb_queue *nq) if (tag != -1U) { cmd = &nq->cmds[tag]; cmd->tag = tag; + cmd->error = BLK_STS_OK; cmd->nq = nq; if (nq->dev->irqmode == NULL_IRQ_TIMER) { hrtimer_init(&cmd->timer, CLOCK_MONOTONIC, @@ -1433,6 +1434,7 @@ static blk_status_t null_queue_rq(struct blk_mq_hw_ctx *hctx, cmd->timer.function = null_cmd_timer_expired; } cmd->rq = bd->rq; + cmd->error = BLK_STS_OK; cmd->nq = nq; blk_mq_start_request(bd->rq); |