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authorIsrael Rukshin <israelr@mellanox.com>2020-03-24 16:29:42 +0100
committerKeith Busch <kbusch@kernel.org>2020-03-25 20:51:56 +0100
commit726612b6b8259afa41d265a2722991c87f059223 (patch)
treeaa2a91b5b655fa4a4feb1f4250bf68b97eeb8de0 /block/blk-mq-debugfs.c
parentnvme: Fix ctrl use-after-free during sysfs deletion (diff)
downloadlinux-726612b6b8259afa41d265a2722991c87f059223.tar.xz
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nvme: Make nvme_uninit_ctrl symmetric to nvme_init_ctrl
Put the ctrl reference count at nvme_uninit_ctrl as opposed to nvme_init_ctrl which takes it. This decrease the reference count at the core layer instead of decreasing it on each transport separately. Also move the call of nvme_uninit_ctrl at PCI driver after calling to nvme_release_prp_pools and nvme_dev_unmap, in order to put the reference count after using the dev. This is safe because those functions use nvme_dev which is freed only later at nvme_pci_free_ctrl. Signed-off-by: Israel Rukshin <israelr@mellanox.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Keith Busch <kbusch@kernel.org>
Diffstat (limited to 'block/blk-mq-debugfs.c')
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