commit 5858b687559809f05393af745cbadf06dee61295 upstream. Kernel will hang on destroy admin_q while we create ctrl failed, such as following calltrace: PID: 23644 TASK: ff2d52b40f439fc0 CPU: 2 COMMAND: "nvme" #0 [ff61d23de260fb78] __schedule at ffffffff8323bc15 rubikpi-ai#1 [ff61d23de260fc08] schedule at ffffffff8323c014 rubikpi-ai#2 [ff61d23de260fc28] blk_mq_freeze_queue_wait at ffffffff82a3dba1 rubikpi-ai#3 [ff61d23de260fc78] blk_freeze_queue at ffffffff82a4113a rubikpi-ai#4 [ff61d23de260fc90] blk_cleanup_queue at ffffffff82a33006 rubikpi-ai#5 [ff61d23de260fcb0] nvme_rdma_destroy_admin_queue at ffffffffc12686ce rubikpi-ai#6 [ff61d23de260fcc8] nvme_rdma_setup_ctrl at ffffffffc1268ced rubikpi-ai#7 [ff61d23de260fd28] nvme_rdma_create_ctrl at ffffffffc126919b rubikpi-ai#8 [ff61d23de260fd68] nvmf_dev_write at ffffffffc024f362 rubikpi-ai#9 [ff61d23de260fe38] vfs_write at ffffffff827d5f25 RIP: 00007fda7891d574 RSP: 00007ffe2ef06958 RFLAGS: 00000202 RAX: ffffffffffffffda RBX: 000055e8122a4d90 RCX: 00007fda7891d574 RDX: 000000000000012b RSI: 000055e8122a4d90 RDI: 0000000000000004 RBP: 00007ffe2ef079c0 R8: 000000000000012b R9: 000055e8122a4d90 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000004 R13: 000055e8122923c0 R14: 000000000000012b R15: 00007fda78a54500 ORIG_RAX: 0000000000000001 CS: 0033 SS: 002b This due to we have quiesced admi_q before cancel requests, but forgot to unquiesce before destroy it, as a result we fail to drain the pending requests, and hang on blk_mq_freeze_queue_wait() forever. Here try to reuse nvme_rdma_teardown_admin_queue() to fix this issue and simplify the code. Fixes: 958dc1d ("nvme-rdma: add clean action for failed reconnection") Reported-by: Yingfu.zhou <yingfu.zhou@shopee.com> Signed-off-by: Chunguang.xu <chunguang.xu@shopee.com> Signed-off-by: Yue.zhao <yue.zhao@shopee.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Keith Busch <kbusch@kernel.org> [Minor context change fixed] Signed-off-by: Feng Liu <Feng.Liu3@windriver.com> Signed-off-by: He Zhe <Zhe.He@windriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

How to prevent sleep and screen lock, and hide the mouse cursor in Debian 12? #9

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