INFO: task udevd:5853 blocked for more than 143 seconds.
      Not tainted 6.16.0-syzkaller-12063-g37816488247d-dirty #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd           state:D stack:21928 pid:5853  tgid:5853  ppid:1      task_flags:0x400140 flags:0x00004006
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 io_schedule+0x80/0xd0
 folio_wait_bit_common+0x6b0/0xb90
 do_read_cache_folio+0x1aa/0x590
 read_part_sector+0xb6/0x2b0
 adfspart_check_POWERTEC+0x8c/0xf30
 bdev_disk_changed+0x75f/0x14b0
 blkdev_get_whole+0x380/0x510
 bdev_open+0x31e/0xd30
 blkdev_open+0x3a8/0x510
 do_dentry_open+0x953/0x13f0
 vfs_open+0x3b/0x340
 path_openat+0x2ee5/0x3830
 do_filp_open+0x1fa/0x410
 do_sys_openat2+0x121/0x1c0
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f38d11689a4
RSP: 002b:00007ffeba278010 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000559211aa6840 RCX: 00007f38d11689a4
RDX: 00000000000a0800 RSI: 0000559211aa6780 RDI: 00000000ffffff9c
RBP: 0000559211aa6780 R08: 0000000000000001 R09: 7fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 0000559211a93d50 R14: 0000000000000001 R15: 0000559211a88910
 </TASK>

Showing all locks held in the system:
4 locks held by kworker/u8:0/12:
 #0: ffff88801b2f7148 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc900000f7bc0 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffffffff8f527af0 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xf7/0x800
 #3: ffff88811d2f4700 (&device->unregistration_lock){+.+.}-{4:4}, at: rdma_dev_change_netns+0x39/0x300
1 lock held by khungtaskd/34:
 #0: ffffffff8e139ee0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
3 locks held by kworker/u10:4/1088:
 #0: ffff888104e32148 ((wq_completion)ib-unreg-wq){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc90006a4fbc0 ((work_completion)(&device->unregistration_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
 #2: ffff88811d2f4700 (&device->unregistration_lock){+.+.}-{4:4}, at: __ib_unregister_device+0x284/0x3f0
2 locks held by kworker/u9:5/4608:
 #0: ffff88801a489148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffffff8e139ee0 (rcu_read_lock){....}-{1:3}, at: bpf_trace_run4+0x19c/0x4a0
2 locks held by getty/5674:
 #0: ffff88810f2580a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900029032f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400
3 locks held by sshd/5775:
1 lock held by udevd/5853:
 #0: ffff888020bbb358 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xe0/0xd30
1 lock held by syz.1.3959/20548:
 #0: ffffffff8e13f840 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x4c/0x570
2 locks held by syz.0.4513/22576:
 #0: ffffffff8f527af0 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x304/0x4d0
 #1: ffff88811d2f4700 (&device->unregistration_lock){+.+.}-{4:4}, at: rdma_dev_change_netns+0x39/0x300
2 locks held by syz.2.4711/23276:
 #0: ffffffff8f527af0 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x304/0x4d0
 #1: ffff88811d2f4700 (&device->unregistration_lock){+.+.}-{4:4}, at: rdma_dev_change_netns+0x39/0x300
1 lock held by syz.4.4807/23650:
1 lock held by syz.3.4812/23661:

=============================================

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 34 Comm: khungtaskd Not tainted 6.16.0-syzkaller-12063-g37816488247d-dirty #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250
 nmi_cpu_backtrace+0x39e/0x3d0
 nmi_trigger_cpumask_backtrace+0x17a/0x300
 watchdog+0xf93/0xfe0
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 5775 Comm: sshd Not tainted 6.16.0-syzkaller-12063-g37816488247d-dirty #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:next_bits+0x5b0/0x870
Code: 24 48 41 0f b6 04 2c 84 c0 0f 85 36 01 00 00 4c 8b 7c 24 18 45 02 2f 45 88 2f 41 0f b6 dd bf 07 00 00 00 89 de e8 e0 28 ef fc <80> fb 07 76 56 e8 d6 25 ef fc 44 89 eb c0 eb 03 41 80 3c 2e 00 4c
RSP: 0000:ffffc90002f4ee88 EFLAGS: 00000293
RAX: ffffffff84d085d0 RBX: 000000000000000a RCX: 0000000000000000
RDX: ffff888106409cc0 RSI: 000000000000000a RDI: 0000000000000007
RBP: dffffc0000000000 R08: ffff888106409cc0 R09: 0000000000000003
R10: 0000000000000008 R11: 0000000000000000 R12: 1ffff920005e9df2
R13: 000000000000000a R14: 1ffff920005e9df1 R15: ffffc90002f4ef90
FS:  00007fbf078bf800(0000) GS:ffff8880b8621000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbf07018000 CR3: 0000000027740000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 sw842_decompress+0xf8/0xaf0
 scomp_acomp_comp_decomp+0x6dd/0x9e0
 crypto_acomp_decompress+0x42f/0xb20
 zswap_decompress+0x3ec/0x810
 zswap_load+0x2f1/0x4c0
 swap_read_folio+0x60a/0x2380
 swap_cluster_readahead+0x327/0x5f0
 swapin_readahead+0x17d/0xb50
 do_swap_page+0x525/0x5ac0
 __handle_mm_fault+0xe55/0x5440
 handle_mm_fault+0x40a/0x8e0
 do_user_addr_fault+0xa81/0x1390
 exc_page_fault+0x76/0xf0
 asm_exc_page_fault+0x26/0x30
RIP: 0033:0x7fbf0752e92f
Code: ff e9 0d b1 fe ff 49 c1 e8 03 49 39 f0 73 06 50 e8 7e ef ff ff e9 84 b1 fe ff 48 39 f2 73 06 50 e8 6e ef ff ff 48 89 f1 31 c0 <f3> aa c3 50 48 8d 3d b1 ae 08 00 e8 00 00 00 00 55 48 8d 2d bc ae
RSP: 002b:00007ffe24f003e8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 00007ffe24f005a0 RCX: 00000000000e4710
RDX: ffffffffffffffff RSI: 0000000000318700 RDI: 00007fbf07018000
RBP: 000055f0c3f95750 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 000055f0c3f94460
R13: 000055f0b83e0937 R14: 000055f0c3f8f220 R15: 000055f0c3f955e0
 </TASK>
