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Chaitanya Kulkarni fa301aef50 nvme-fc: release admin tagset if init fails
[ Upstream commit d1877cc727 ]

nvme_fabrics creates an NVMe/FC controller in following path:

    nvmf_dev_write()
      -> nvmf_create_ctrl()
        -> nvme_fc_create_ctrl()
          -> nvme_fc_init_ctrl()

nvme_fc_init_ctrl() allocates the admin blk-mq resources right after
nvme_add_ctrl() succeeds.  If any of the subsequent steps fail (changing
the controller state, scheduling connect work, etc.), we jump to the
fail_ctrl path, which tears down the controller references but never
frees the admin queue/tag set.  The leaked blk-mq allocations match the
kmemleak report seen during blktests nvme/fc.

Check ctrl->ctrl.admin_tagset in the fail_ctrl path and call
nvme_remove_admin_tag_set() when it is set so that all admin queue
allocations are reclaimed whenever controller setup aborts.

Reported-by: Yi Zhang <yi.zhang@redhat.com>
Reviewed-by: Justin Tee <justin.tee@broadcom.com>
Signed-off-by: Chaitanya Kulkarni <ckulkarnilinux@gmail.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2026-02-11 13:40:22 +01:00
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Linux kernel
============

There are several guides for kernel developers and users. These guides can
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In order to build the documentation, use ``make htmldocs`` or
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