Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/hns: Fix WQ_MEM_RECLAIM warning When sunrpc is used, if a reset triggered, our wq may lead the following trace: workqueue: WQ_MEM_RECLAIM xprtiod:xprt_rdma_connect_worker [rpcrdma] is flushing !WQ_MEM_RECLAIM hns_roce_irq_workq:flush_work_handle [hns_roce_hw_v2] WARNING: CPU: 0 PID: 8250 at kernel/workqueue.c:2644 check_flush_dependency+0xe0/0x144 Call trace: check_flush_dependency+0xe0/0x144 start_flush_work.constprop.0+0x1d0/0x2f0 __flush_work.isra.0+0x40/0xb0 flush_work+0x14/0x30 hns_roce_v2_destroy_qp+0xac/0x1e0 [hns_roce_hw_v2] ib_destroy_qp_user+0x9c/0x2b4 rdma_destroy_qp+0x34/0xb0 rpcrdma_ep_destroy+0x28/0xcc [rpcrdma] rpcrdma_ep_put+0x74/0xb4 [rpcrdma] rpcrdma_xprt_disconnect+0x1d8/0x260 [rpcrdma] xprt_rdma_connect_worker+0xc0/0x120 [rpcrdma] process_one_work+0x1cc/0x4d0 worker_thread+0x154/0x414 kthread+0x104/0x144 ret_from_fork+0x10/0x18 Since QP destruction frees memory, this wq should have the WQ_MEM_RECLAIM.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
ffd541d45726341c1830ff595fd7352b6d1cfbcd to < 12761bd0ae16a80f237c2a65ab1b1064076cc74aaffectedffd541d45726341c1830ff595fd7352b6d1cfbcd to < 70a5eb757ace5bd627a36f04d871eaf85def424daffectedffd541d45726341c1830ff595fd7352b6d1cfbcd to < 562c96b1393da2df3ea62173c84117b39da353b9affectedffd541d45726341c1830ff595fd7352b6d1cfbcd to < 0cbec8b49270f3f0600b8e3ef5e8f0d233dcea27affectedffd541d45726341c1830ff595fd7352b6d1cfbcd to < c5ef9a1bcf5b597695d9c2e6ac452e9f89521862affectedffd541d45726341c1830ff595fd7352b6d1cfbcd to < c0a26bbd3f99b7b03f072e3409aff4e6ec8af6f6affected
Linux Linux
Default version status: affected
5.7affected0 to < 5.7unaffected6.1.165 to ≤ 6.1.*unaffected6.6.128 to ≤ 6.6.*unaffected6.12.75 to ≤ 6.12.*unaffected6.18.14 to ≤ 6.18.*unaffected6.19.4 to ≤ 6.19.*unaffected7.0 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/12761bd0ae16a80f237c2a65ab1b1064076cc74a ↗
- https://git.kernel.org/stable/c/70a5eb757ace5bd627a36f04d871eaf85def424d ↗
- https://git.kernel.org/stable/c/562c96b1393da2df3ea62173c84117b39da353b9 ↗
- https://git.kernel.org/stable/c/0cbec8b49270f3f0600b8e3ef5e8f0d233dcea27 ↗
- https://git.kernel.org/stable/c/c5ef9a1bcf5b597695d9c2e6ac452e9f89521862 ↗
- https://git.kernel.org/stable/c/c0a26bbd3f99b7b03f072e3409aff4e6ec8af6f6 ↗