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linux/drivers/nvme
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Maurizio Lombardi 89047f0089 nvme-tcp: can't set sk_user_data without write_lock 
[ Upstream commit 0755d3be2d ]

The sk_user_data pointer is supposed to be modified only while
holding the write_lock "sk_callback_lock", otherwise
we could race with other threads and crash the kernel.

we can't take the write_lock in nvmet_tcp_state_change()
because it would cause a deadlock, but the release_work queue
will set the pointer to NULL later so we can simply remove
the assignment.

Fixes: b5332a9f3f ("nvmet-tcp: fix incorrect locking in state_change sk callback")

Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2021-07-20 16:05:53 +02:00
..
host nvme-pci: look for StorageD3Enable on companion ACPI device instead 2021-07-14 16:56:11 +02:00
target nvme-tcp: can't set sk_user_data without write_lock 2021-07-20 16:05:53 +02:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00