From: Christoph Hellwig <hch@lst.de> To: Jens Axboe <axboe@kernel.dk> Cc: Coly Li <colyli@suse.de>, Song Liu <song@kernel.org>, Ulf Hansson <ulf.hansson@linaro.org>, Luis Chamberlain <mcgrof@kernel.org>, linux-block@vger.kernel.org, linux-bcache@vger.kernel.org, linux-raid@vger.kernel.org, linux-mmc@vger.kernel.org, linux-nvme@lists.infradead.org Subject: [PATCH 6/8] bcache: add proper error unwinding in bcache_device_init Date: Mon, 9 Aug 2021 08:40:26 +0200 [thread overview] Message-ID: <20210809064028.1198327-7-hch@lst.de> (raw) In-Reply-To: <20210809064028.1198327-1-hch@lst.de> Except for the IDA none of the allocations in bcache_device_init is unwound on error, fix that. Signed-off-by: Christoph Hellwig <hch@lst.de> --- drivers/md/bcache/super.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c index 185246a0d855..d0f08e946453 100644 --- a/drivers/md/bcache/super.c +++ b/drivers/md/bcache/super.c @@ -931,20 +931,20 @@ static int bcache_device_init(struct bcache_device *d, unsigned int block_size, n = BITS_TO_LONGS(d->nr_stripes) * sizeof(unsigned long); d->full_dirty_stripes = kvzalloc(n, GFP_KERNEL); if (!d->full_dirty_stripes) - return -ENOMEM; + goto out_free_stripe_sectors_dirty; idx = ida_simple_get(&bcache_device_idx, 0, BCACHE_DEVICE_IDX_MAX, GFP_KERNEL); if (idx < 0) - return idx; + goto out_free_full_dirty_stripes; if (bioset_init(&d->bio_split, 4, offsetof(struct bbio, bio), BIOSET_NEED_BVECS|BIOSET_NEED_RESCUER)) - goto err; + goto out_ida_remove; d->disk = blk_alloc_disk(NUMA_NO_NODE); if (!d->disk) - goto err; + goto out_bioset_exit; set_capacity(d->disk, sectors); snprintf(d->disk->disk_name, DISK_NAME_LEN, "bcache%i", idx); @@ -987,8 +987,14 @@ static int bcache_device_init(struct bcache_device *d, unsigned int block_size, return 0; -err: +out_bioset_exit: + bioset_exit(&d->bio_split); +out_ida_remove: ida_simple_remove(&bcache_device_idx, idx); +out_free_full_dirty_stripes: + kvfree(d->full_dirty_stripes); +out_free_stripe_sectors_dirty: + kvfree(d->stripe_sectors_dirty); return -ENOMEM; } -- 2.30.2
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de> To: Jens Axboe <axboe@kernel.dk> Cc: Coly Li <colyli@suse.de>, Song Liu <song@kernel.org>, Ulf Hansson <ulf.hansson@linaro.org>, Luis Chamberlain <mcgrof@kernel.org>, linux-block@vger.kernel.org, linux-bcache@vger.kernel.org, linux-raid@vger.kernel.org, linux-mmc@vger.kernel.org, linux-nvme@lists.infradead.org Subject: [PATCH 6/8] bcache: add proper error unwinding in bcache_device_init Date: Mon, 9 Aug 2021 08:40:26 +0200 [thread overview] Message-ID: <20210809064028.1198327-7-hch@lst.de> (raw) In-Reply-To: <20210809064028.1198327-1-hch@lst.de> Except for the IDA none of the allocations in bcache_device_init is unwound on error, fix that. Signed-off-by: Christoph Hellwig <hch@lst.de> --- drivers/md/bcache/super.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c index 185246a0d855..d0f08e946453 100644 --- a/drivers/md/bcache/super.c +++ b/drivers/md/bcache/super.c @@ -931,20 +931,20 @@ static int bcache_device_init(struct bcache_device *d, unsigned int block_size, n = BITS_TO_LONGS(d->nr_stripes) * sizeof(unsigned long); d->full_dirty_stripes = kvzalloc(n, GFP_KERNEL); if (!d->full_dirty_stripes) - return -ENOMEM; + goto out_free_stripe_sectors_dirty; idx = ida_simple_get(&bcache_device_idx, 0, BCACHE_DEVICE_IDX_MAX, GFP_KERNEL); if (idx < 0) - return idx; + goto out_free_full_dirty_stripes; if (bioset_init(&d->bio_split, 4, offsetof(struct bbio, bio), BIOSET_NEED_BVECS|BIOSET_NEED_RESCUER)) - goto err; + goto out_ida_remove; d->disk = blk_alloc_disk(NUMA_NO_NODE); if (!d->disk) - goto err; + goto out_bioset_exit; set_capacity(d->disk, sectors); snprintf(d->disk->disk_name, DISK_NAME_LEN, "bcache%i", idx); @@ -987,8 +987,14 @@ static int bcache_device_init(struct bcache_device *d, unsigned int block_size, return 0; -err: +out_bioset_exit: + bioset_exit(&d->bio_split); +out_ida_remove: ida_simple_remove(&bcache_device_idx, idx); +out_free_full_dirty_stripes: + kvfree(d->full_dirty_stripes); +out_free_stripe_sectors_dirty: + kvfree(d->stripe_sectors_dirty); return -ENOMEM; } -- 2.30.2 _______________________________________________ Linux-nvme mailing list Linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme
next prev parent reply other threads:[~2021-08-09 6:48 UTC|newest] Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-08-09 6:40 remove GENHD_FL_UP Christoph Hellwig 2021-08-09 6:40 ` Christoph Hellwig 2021-08-09 6:40 ` [PATCH 1/8] mmc: block: let device_add_disk create disk attributes Christoph Hellwig 2021-08-09 6:40 ` Christoph Hellwig 2021-08-09 11:30 ` Ulf Hansson 2021-08-09 11:30 ` Ulf Hansson 2021-08-09 6:40 ` [PATCH 2/8] mmc: block: cleanup gendisk creation Christoph Hellwig 2021-08-09 6:40 ` Christoph Hellwig 2021-08-09 11:30 ` Ulf Hansson 2021-08-09 11:30 ` Ulf Hansson 2021-08-09 6:40 ` [PATCH 3/8] nvme: remove the GENHD_FL_UP check in nvme_ns_remove Christoph Hellwig 2021-08-09 6:40 ` Christoph Hellwig 2021-08-09 6:40 ` [PATCH 4/8] nvme: replace the GENHD_FL_UP check in nvme_mpath_shutdown_disk Christoph Hellwig 2021-08-09 6:40 ` Christoph Hellwig 2021-08-09 6:40 ` [PATCH 5/8] sx8: use the internal state machine to check if del_gendisk needs to be called Christoph Hellwig 2021-08-09 6:40 ` Christoph Hellwig 2021-08-09 6:40 ` Christoph Hellwig [this message] 2021-08-09 6:40 ` [PATCH 6/8] bcache: add proper error unwinding in bcache_device_init Christoph Hellwig 2021-08-12 15:48 ` Coly Li 2021-08-12 15:48 ` Coly Li 2021-08-09 6:40 ` [PATCH 7/8] bcache: move the del_gendisk call out of bcache_device_free Christoph Hellwig 2021-08-09 6:40 ` Christoph Hellwig 2021-08-12 8:38 ` Coly Li 2021-08-12 8:38 ` Coly Li 2021-08-09 6:40 ` [PATCH 8/8] block: remove GENHD_FL_UP Christoph Hellwig 2021-08-09 6:40 ` Christoph Hellwig 2021-08-12 16:30 ` Jens Axboe 2021-08-12 16:30 ` Jens Axboe
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