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RDMA/efa: Fix possible deadlock

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In the error path for efa_com_alloc_comp_ctx() the semaphore assigned to
&aq->avail_cmds is not released.

Detected by Smatch:
drivers/infiniband/hw/efa/efa_com.c:662 efa_com_cmd_exec() warn:
inconsistent returns '&aq->avail_cmds'

Add release for &aq->avail_cmds in efa_com_alloc_comp_ctx() error path.

Fixes: ef3b06742c ("RDMA/efa: Fix use of completion ctx after free")
Signed-off-by: Ethan Tidmore <ethantidmore06@gmail.com>
Link: https://patch.msgid.link/20260314045730.1143862-1-ethantidmore06@gmail.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Ethan Tidmore 2026-03-13 23:57:30 -05:00 committed by Leon Romanovsky
parent f28599f396
commit 0f2055db7b
1 changed files with 1 additions and 0 deletions
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1
drivers/infiniband/hw/efa/efa_com.c
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@ -629,6 +629,7 @@ int efa_com_cmd_exec(struct efa_com_admin_queue *aq,
comp_ctx = efa_com_alloc_comp_ctx(aq);
if (!comp_ctx) {
clear_bit(EFA_AQ_STATE_RUNNING_BIT, &aq->state);
up(&aq->avail_cmds);
return -EINVAL;
}