From: Ethan Tidmore Date: Sat, 14 Mar 2026 04:57:30 +0000 (-0500) Subject: RDMA/efa: Fix possible deadlock X-Git-Tag: v7.0-rc6~28^2~8 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0f2055db7b630559870afb40fc84490816ab8ec5;p=thirdparty%2Fkernel%2Flinux.git RDMA/efa: Fix possible deadlock 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: ef3b06742c8a2 ("RDMA/efa: Fix use of completion ctx after free") Signed-off-by: Ethan Tidmore Link: https://patch.msgid.link/20260314045730.1143862-1-ethantidmore06@gmail.com Signed-off-by: Leon Romanovsky --- diff --git a/drivers/infiniband/hw/efa/efa_com.c b/drivers/infiniband/hw/efa/efa_com.c index 56caba612139..e97b5f0d7003 100644 --- a/drivers/infiniband/hw/efa/efa_com.c +++ b/drivers/infiniband/hw/efa/efa_com.c @@ -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; }