RDMA/cxgb4: Cancel reg_work before freeing device on remove

Browse source

c4iw_uld_state_change() queues reg_work to register the RDMA device.
c4iw_remove() can free ctx->dev while this work is pending or running,
leaving c4iw_register_device() accessing the freed device.

Cancel reg_work before removing the device.  The registration work can
tear down ctx->dev when registration fails, so do not unregister or
deallocate it again in that case.

This issue was found by an in-house static analysis tool.

Fixes: 1c8f1da5d8 ("iw_cxgb4: Fix possible circular dependency locking warning")
Link: https://patch.msgid.link/r/20260806130128.465460-1-fanwu01@zju.edu.cn
Cc: stable@vger.kernel.org
Assisted-by: Codex:gpt-5.6
Signed-off-by: Fan Wu <fanwu01@zju.edu.cn>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

...

This commit is contained in:

Fan Wu 2026-08-06 13:01:27 +00:00 • committed by Jason Gunthorpe

parent ecbe7d36dc

commit a7100601aa

1 changed files with 6 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

6

drivers/infiniband/hw/cxgb4/device.c

View file