diff options
| author |   Shivam Kumar <kumar.shivam43666@gmail.com> | 2026-03-18 18:56:58 -0400 |
|---|---|---|
| committer |   Keith Busch <kbusch@kernel.org> | 2026-04-07 07:25:50 -0700 |
| commit | 4606467a75cfc16721937272ed29462a750b60c8 (patch) | |
| tree | e4fbaff265d6e1f0db7403166df7d18a89d90259 /include/linux/surface_aggregator/ssh:/git@git.zx2c4.com | |
| parent | blk-wbt: remove WARN_ON_ONCE from wbt_init_enable_default() (diff) | |
nvmet-tcp: check INIT_FAILED before nvmet_req_uninit in digest error path
In nvmet_tcp_try_recv_ddgst(), when a data digest mismatch is detected,
nvmet_req_uninit() is called unconditionally. However, if the command
arrived via the nvmet_tcp_handle_req_failure() path, nvmet_req_init()
had returned false and percpu_ref_tryget_live() was never executed. The
unconditional percpu_ref_put() inside nvmet_req_uninit() then causes a
refcount underflow, leading to a WARNING in
percpu_ref_switch_to_atomic_rcu, a use-after-free diagnostic, and
eventually a permanent workqueue deadlock.
Check cmd->flags & NVMET_TCP_F_INIT_FAILED before calling
nvmet_req_uninit(), matching the existing pattern in
nvmet_tcp_execute_request().
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Shivam Kumar <kumar.shivam43666@gmail.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Diffstat (limited to 'include/linux/surface_aggregator/ssh:/git@git.zx2c4.com')
0 files changed, 0 insertions, 0 deletions