Hi, It is unclear to me whether the issue has been solved or not from previous discussions. We found a similar crash on v4.4.262. The crash happened at the exact line of code as described by Igor. I wonder what's the fix and possible ways to test the fix. Thanks! [14501930.727650,06] BUG: unable to handle kernel paging request at ffffc901aed4d048 [14501930.730983,06] IP: [<ffffffff816612cf>] dm_softirq_done+0x8f/0x270 [14501930.732776,06] PGD 18fcbb067 PUD 2e3b7b067 PMD 2cab08067 PTE 0 [14501930.734640,06] Oops: 0000 [#1] SMP [14501930.736507,06] Dumping ftrace buffer: ... [14501930.818509,06] CPU: 6 PID: 14767 Comm: <masked off> Tainted: P W O 4.4.262+ ... [14501930.938477,06] Call Trace: [14501930.941301,06] <IRQ> [14501930.941351,06] [<ffffffff8130b6c3>] __blk_mq_complete_request+0x83/0xf0 [14501930.946847,06] [<ffffffff8130b74c>] blk_mq_complete_request+0x1c/0x20 [14501930.949574,06] [<ffffffff81660494>] dm_complete_request+0x34/0x50 [14501930.952256,06] [<ffffffff816604df>] end_clone_request+0x2f/0x50 [14501930.954883,06] [<ffffffff8130a7cd>] blk_mq_end_request+0x3d/0x70 [14501930.957460,06] [<ffffffffa028484c>] nvme_rdma_complete_rq+0x4c/0x210 [nvme_rdma] [14501930.962447,06] [<ffffffff810760ac>] ? __local_bh_enable+0x3c/0x70 [14501930.964972,06] [<ffffffff813097f0>] ? blkdev_issue_zeroout+0x260/0x260 [14501930.967459,06] [<ffffffff81309809>] __blk_mq_complete_request_remote+0x19/0x20 [14501930.972291,06] [<ffffffff810ef099>] flush_smp_call_function_queue+0xa9/0x170 [14501930.977138,06] [<ffffffff810efaa3>] generic_smp_call_function_single_interrupt+0x13/0x60 [14501930.982005,06] [<ffffffff810495bd>] smp_call_function_interrupt+0x2d/0x40 [14501930.984492,06] [<ffffffff810496be>] smp_call_function_single_interrupt+0xe/0x10 [14501930.989316,06] [<ffffffff817d0221>] call_function_single_interrupt+0x91/0xa0 [14501930.994301,06] <EOI> [14501930.994350,06] [<ffffffff810031a0>] ? exit_to_usermode_loop+0x50/0xb0 [14501930.999364,06] [<ffffffff81003199>] ? exit_to_usermode_loop+0x49/0xb0 [14501931.001829,06] [<ffffffff81003b62>] prepare_exit_to_usermode+0x32/0x40 [14501931.004261,06] [<ffffffff817cf979>] retint_user+0x8/0x20 [14501931.006626,06] Code: 16 41 83 fc 02 0f 85 df 01 00 00 49 8b 76 10 49 8b 3e e8 05 fe ff ff 5b 41 5c 41 5d 41 5e 41 5f 5d c3 49 8b 7e 08 48 85 ff 74 bd <48> 8b 47 08 48 8b 40 60 48 85 c0 74 b0 44 89 e2 49 8d 4e 48 4c [14501931.014038,06] RIP [<ffffffff816612cf>] dm_softirq_done+0x8f/0x270 [14501931.016532,06] RSP <ffff8817e0ac3e28> [14501931.018971,06] CR2: ffffc901aed4d048 [14501931.021382,06] ---[ end trace 67b8f26e34c76805 ]--- Regards, Casey -- dm-devel mailing list dm-devel@xxxxxxxxxx https://listman.redhat.com/mailman/listinfo/dm-devel
