blktests srp/013 fails with an NMI on v5.17-rc7

gistfile1.txt

[  372.812662] sd 4:0:0:2: Attached scsi generic sg5 type 0
[  372.813190] sd 4:0:0:0: [sde] Optimal transfer size 126976 bytes
[  372.815753] sd 4:0:0:2: [sdf] Write Protect is off
[  372.818635] scsi 4:0:0:1: Direct-Access     LIO-ORG  IBLOCK           4.0  PQ: 0 ANSI: 6
[  372.818869] sd 4:0:0:2: [sdf] Write cache: enabled, read cache: enabled, supports DPO and FUA
[  372.821197] scsi 4:0:0:1: alua: supports implicit and explicit TPGS
[  372.823230] sd 4:0:0:2: [sdf] Optimal transfer size 524288 bytes
[  372.824332] scsi 4:0:0:1: alua: device naa.60014056e756c6c62310000000000000 port group 0 rel port 2
[  372.828875] sd 4:0:0:1: Warning! Received an indication that the LUN assignments on this target have changed. The Linux SCSI layer does not automatical
[  372.829399] sd 4:0:0:1: Attached scsi generic sg6 type 0
[  372.837593] sd 4:0:0:1: [sdg] 65536 512-byte logical blocks: (33.6 MB/32.0 MiB)
[  372.839726] sd 4:0:0:1: [sdg] Write Protect is off
[  372.841525] sd 4:0:0:1: [sdg] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[  372.843790] sd 4:0:0:1: [sdg] Optimal transfer size 126976 bytes
[  372.845781] scsi host5: ib_srp: Already connected to target port with id_ext=505400fffea6d62d;ioc_guid=505400fffea6d62d;dest=fe80:0000:0000:0000:5054:00ff:fec2:d9c8
[  372.854554] sd 4:0:0:0: [sde] Attached SCSI disk
[  372.874154] sd 4:0:0:2: [sdf] Attached SCSI disk
[  372.901948] sd 4:0:0:1: [sdg] Attached SCSI disk
[  375.576985] sched: RT throttling activated
[  395.028944] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
[  395.030930] rcu:     3-...0: (1 GPs behind) idle=d8d/1/0x4000000000000000 softirq=6896/6909 fqs=2387
[  395.032435]  (detected by 2, t=5252 jiffies, g=16361, q=11138)
[  395.033569] Sending NMI from CPU 2 to CPUs 3:
[  395.034532] NMI backtrace for cpu 3
[  395.034548] CPU: 3 PID: 1594 Comm: systemd-udevd Kdump: loaded Tainted: G            E     5.17.0-rc7 #1
[  395.034553] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014
[  395.034564] RIP: 0010:native_queued_spin_lock_slowpath+0x28/0x200
[  395.034611] Code: 00 00 0f 1f 44 00 00 41 54 55 53 48 89 fb 66 90 ba 01 00 00 00 8b 03 85 c0 75 0d f0 0f b1 13 85 c0 75 f2 5b 5d 41 5c c3 f3 90 <eb> e9 81 fe 00 01 00 00 74 45 40 30 f6 85 f6 75 67 f0 0f ba 2b 08
[  395.034612] RSP: 0018:ffffb97580148e58 EFLAGS: 00000002
[  395.034617] RAX: 0000000000000001 RBX: ffff952ec7f35490 RCX: 000000000003003c
[  395.034620] RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffff952ec7f35490
[  395.034621] RBP: ffff952ec7f35480 R08: ffff952ecf77e680 R09: ffff952ed3124800
[  395.034622] R10: ffffffffb30060c0 R11: ffffb97580148ff8 R12: 0000000000000282
[  395.034623] R13: ffff952ec7f317e0 R14: ffff952ecca551e0 R15: ffff952ec7f35490
[  395.034625] FS:  00007feba863f8c0(0000) GS:ffff952ff7cc0000(0000) knlGS:0000000000000000
[  395.034626] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  395.034627] CR2: 000055fe07174000 CR3: 000000011332e006 CR4: 0000000000770ee0
[  395.034630] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  395.034631] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  395.034632] PKRU: 55555554
[  395.034635] Call Trace:
[  395.034647]  <IRQ>
[  395.034654]  _raw_spin_lock_irqsave+0x44/0x50
[  395.034703]  srp_recv_done+0x11e/0x480 [ib_srp]
[  395.034718]  ? _raw_spin_lock_bh+0x13/0x30
[  395.034728]  __ib_process_cq+0x83/0x180 [ib_core]
[  395.034807]  ib_poll_handler+0x2b/0xc0 [ib_core]
[  395.034818]  irq_poll_softirq+0x8e/0x120
[  395.034841]  __do_softirq+0xec/0x2ea
[  395.034847]  do_softirq.part.0+0x9b/0xd0
[  395.034860]  </IRQ>
[  395.034861]  <TASK>
[  395.034862]  __local_bh_enable_ip+0x73/0x80
[  395.034869]  rxe_poll_cq+0xed/0x100 [rdma_rxe]
[  395.034890]  __ib_process_cq+0x54/0x180 [ib_core]
[  395.034901]  ib_process_cq_direct+0x2c/0x50 [ib_core]
[  395.034911]  ? blk_mq_sched_insert_requests+0x6a/0x150
[  395.034923]  ? kernel_text_address+0x13/0xd0
[  395.034929]  ? blk_mq_sched_insert_requests+0x6a/0x150
[  395.034931]  ? __kernel_text_address+0xe/0x30
[  395.034933]  ? unwind_get_return_address+0x1b/0x30
[  395.034941]  ? create_prof_cpu_mask+0x20/0x20
[  395.034946]  ? arch_stack_walk+0x75/0xf0
[  395.034952]  ? blk_mq_sched_insert_requests+0x6a/0x150
[  395.034954]  ? stack_trace_save+0x4b/0x70
[  395.034955]  ? _raw_spin_lock_irqsave+0x26/0x50
[  395.034959]  ? create_object.isra.0+0x1c8/0x330
[  395.034972]  ? _raw_spin_unlock_irqrestore+0x25/0x40
[  395.034976]  ? kmem_cache_alloc+0x2af/0x420
[  395.034989]  ? mempool_alloc+0x5f/0x1a0
[  395.034997]  ? __blk_rq_map_sg+0x11c/0x560
[  395.035004]  __srp_get_tx_iu+0x20/0xa0 [ib_srp]
[  395.035007]  srp_queuecommand+0xbe/0x98a [ib_srp]
[  395.035016]  ? scsi_alloc_sgtables+0xb9/0x3f0 [scsi_mod]
[  395.035060]  ? sd_init_command+0x4bd/0xd40 [sd_mod]
[  395.035067]  ? scsi_init_command+0x102/0x1a0 [scsi_mod]
[  395.035076]  scsi_queue_rq+0x37b/0xb10 [scsi_mod]
[  395.035094]  __blk_mq_try_issue_directly+0x14f/0x1c0
[  395.035105]  blk_insert_cloned_request+0xb7/0x190
[  395.035111]  dm_mq_queue_rq+0x1c7/0x410 [dm_mod]
[  395.035145]  blk_mq_dispatch_rq_list+0x1ef/0x890
[  395.035148]  ? elv_rb_add+0x30/0x70
[  395.035154]  ? sbitmap_get+0x86/0x190
[  395.035156]  __blk_mq_do_dispatch_sched+0xb8/0x320
[  395.035163]  ? __blk_mq_alloc_requests+0x15c/0x2a0
[  395.035166]  __blk_mq_sched_dispatch_requests+0xf4/0x140
[  395.035168]  blk_mq_sched_dispatch_requests+0x30/0x60
[  395.035170]  __blk_mq_run_hw_queue+0x35/0x90
[  395.035175]  __blk_mq_delay_run_hw_queue+0x178/0x1b0
[  395.035178]  blk_mq_sched_insert_requests+0x6a/0x150
[  395.035180]  blk_mq_flush_plug_list+0x1a6/0x3a0
[  395.035184]  blk_flush_plug+0x102/0x160
[  395.035198]  blk_finish_plug+0x21/0x30
[  395.035200]  read_pages+0x16d/0x240
[  395.035213]  page_cache_ra_unbounded+0x182/0x210
[  395.035215]  force_page_cache_ra+0xc7/0x100
[  395.035217]  filemap_get_pages+0xe9/0x5e0
[  395.035225]  ? atime_needs_update+0xfc/0x170
[  395.035233]  filemap_read+0xb9/0x2d0
[  395.035235]  ? security_compute_av_user+0x10/0x120
[  395.035243]  ? ptep_set_access_flags+0x2f/0x40
[  395.035247]  ? _raw_spin_unlock+0x16/0x30
[  395.035249]  ? wp_page_reuse+0x61/0x70
[  395.035254]  ? do_wp_page+0x1da/0x2f0
[  395.035256]  ? preempt_count_add+0x68/0xa0
[  395.035264]  ? aa_file_perm+0x11c/0x4c0
[  395.035272]  blkdev_read_iter+0xac/0x1c0
[  395.035280]  new_sync_read+0x115/0x1a0
[  395.035288]  vfs_read+0xf1/0x190
[  395.035291]  ksys_read+0x5f/0xe0
[  395.035294]  do_syscall_64+0x38/0xc0
[  395.035306]  entry_SYSCALL_64_after_hwframe+0x44/0xae
[  395.035309] RIP: 0033:0x7feba8be910e
[  395.035328] Code: 0f 1f 40 00 48 8b 15 b9 ae 00 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb ba 0f 1f 00 64 8b 04 25 18 00 00 00 85 c0 75 14 0f 05 <48> 3d 00 f0 ff ff 77 5a c3 66 0f 1f 84 00 00 00 00 00 48 83 ec 28
[  395.035332] RSP: 002b:00007ffff9d1e5e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
[  395.035334] RAX: ffffffffffffffda RBX: 000055fe07135a88 RCX: 00007feba8be910e
[  395.035335] RDX: 0000000000040000 RSI: 000055fe07135a98 RDI: 0000000000000006
[  395.035336] RBP: 000055fe070ce2f0 R08: 000055fe07135a70 R09: 00007feba8bcdc00
[  395.035336] R10: 0000000010000000 R11: 0000000000000246 R12: 0000000000000000
[  395.035338] R13: 0000000000040000 R14: 000055fe07135a70 R15: 000055fe070ce340
[  395.035340]  </TASK>