INFO: task udevd:16403 blocked in I/O wait for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd           state:D stack:25896 pid:16403 tgid:16403 ppid:5043   task_flags:0x400140 flags:0x00080802
Call Trace:
 <TASK>
 __schedule+0x17db/0x58f0
 schedule+0x164/0x2b0
 io_schedule+0x7f/0xd0
 folio_wait_bit_common+0x836/0xbc0
 do_read_cache_folio+0x1ac/0x590
 read_part_sector+0xb6/0x2b0
 adfspart_check_POWERTEC+0x9a/0x7a0
 bdev_disk_changed+0x851/0x17a0
 blkdev_get_whole+0x372/0x510
 bdev_open+0x324/0xd70
 blkdev_open+0x461/0x600
 do_dentry_open+0x816/0x1380
 vfs_open+0x3b/0x340
 path_openat+0x1443/0x1d60
 do_file_open+0x23e/0x4a0
 do_sys_openat2+0x115/0x200
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0x166/0x520
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5febb169a4
RSP: 002b:00007ffdf963c930 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000055d084983780 RCX: 00007f5febb169a4
RDX: 00000000000a0800 RSI: 000055d084979cc0 RDI: 00000000ffffff9c
RBP: 000055d084979cc0 R08: 0000000000000001 R09: 3fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 000055d084977800 R14: 0000000000000001 R15: 000055d084963910
 </TASK>
INFO: task udevd:16505 blocked in I/O wait for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd           state:D stack:23592 pid:16505 tgid:16505 ppid:5043   task_flags:0x400140 flags:0x00080802
Call Trace:
 <TASK>
 __schedule+0x17db/0x58f0
 schedule+0x164/0x2b0
 io_schedule+0x7f/0xd0
 folio_wait_bit_common+0x836/0xbc0
 do_read_cache_folio+0x1ac/0x590
 read_part_sector+0xb6/0x2b0
 adfspart_check_POWERTEC+0x9a/0x7a0
 bdev_disk_changed+0x851/0x17a0
 blkdev_get_whole+0x372/0x510
 bdev_open+0x324/0xd70
 blkdev_open+0x461/0x600
 do_dentry_open+0x816/0x1380
 vfs_open+0x3b/0x340
 path_openat+0x1443/0x1d60
 do_file_open+0x23e/0x4a0
 do_sys_openat2+0x115/0x200
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0x166/0x520
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5febb169a4
RSP: 002b:00007ffdf963c930 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000055d084983780 RCX: 00007f5febb169a4
RDX: 00000000000a0800 RSI: 000055d0849642c0 RDI: 00000000ffffff9c
RBP: 000055d0849642c0 R08: 0000000000000001 R09: 3fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800
R13: 000055d084976120 R14: 0000000000000001 R15: 000055d084963910
 </TASK>

Showing all locks held in the system:
locks held by kworker/u8:0/12: 5, last CPU#1:
 #0: ffff888025736140 ((wq_completion)krds_cp_wq#14/7){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #1: ffffc90000117c40 ((work_completion)(&(&cp->cp_conn_w)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #2: ffff888115b54680 (&tc->t_conn_path_lock){+.+.}-{4:4}, at: rds_tcp_conn_path_connect+0x1cc/0x920
 #3: ffff888110ffd660 (k-sk_lock-AF_INET6){+.+.}-{0:0}, at: __inet6_bind+0x301/0xf30
 #4: ffffffff8fd5ce60 (rcu_read_lock){....}-{1:3}, at: __inet6_bind+0x49b/0xf30
locks held by kworker/u8:1/13: 4, last CPU#1:
 #0: ffff888045881140 ((wq_completion)krds_cp_wq#14/1){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #1: ffffc90000127c40 ((work_completion)(&(&cp->cp_conn_w)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #2: ffff888115b55880 (&tc->t_conn_path_lock){+.+.}-{4:4}, at: rds_tcp_conn_path_connect+0x1cc/0x920
 #3: ffff8881a4e19e60 (k-sk_lock-AF_INET6){+.+.}-{0:0}, at: __inet6_bind+0x301/0xf30
locks held by khungtaskd/35: 1, last CPU#1:
 #0: ffffffff8fd5ce60 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
locks held by getty/5423: 2, on CPU#1:
 #0: ffff8881141390a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc9000348b2e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45a/0x1360
locks held by kworker/u8:3/5651: 3, last CPU#1:
 #0: ffff888045881940 ((wq_completion)krds_cp_wq#14/0){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #1: ffffc9000600fc40 ((work_completion)(&(&cp->cp_conn_w)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #2: ffff888115b55b80 (&tc->t_conn_path_lock){+.+.}-{4:4}, at: rds_tcp_conn_path_connect+0x1cc/0x920
locks held by kworker/u10:29/28468: 3, on CPU#1:
 #0: ffff8881000ac140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #1: ffffc90008f77c40 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #2: ffffffff9125b000 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60
locks held by kworker/u10:45/28491: 3, last CPU#0:
 #0: ffff8881000ac140 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #1: ffffc9000842fc40 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #2: ffff888020fcc258 (&devlink->lock_key#5){+.+.}-{4:4}, at: nsim_dev_trap_report_work+0x57/0xb40
locks held by kworker/u8:4/31848: 3, last CPU#0:
 #0: ffff888025733940 ((wq_completion)krds_cp_wq#14/5){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #1: ffffc9000fa07c40 ((work_completion)(&(&cp->cp_conn_w)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #2: ffff888115b54c80 (&tc->t_conn_path_lock){+.+.}-{4:4}, at: rds_tcp_conn_path_connect+0x1cc/0x920
locks held by udevd/16403: 1, on CPU#0:
 #0: ffff8881a602d350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xde/0xd70
locks held by udevd/16505: 1, on CPU#1:
 #0: ffff88801ef9d350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xde/0xd70
locks held by kworker/u8:5/17605: 3, on CPU#1:
 #0: ffff88811078c140 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #1: ffffc900064dfc40 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #2: ffffffff9125b000 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_dad_work+0x116/0x15c0
locks held by kworker/u8:9/21220: 4, last CPU#1:
 #0: ffff888025732940 ((wq_completion)krds_cp_wq#14/6){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #1: ffffc90007487c40 ((work_completion)(&(&cp->cp_conn_w)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #2: ffff888115b54980 (&tc->t_conn_path_lock){+.+.}-{4:4}, at: rds_tcp_conn_path_connect+0x1cc/0x920
 #3: ffff888110ffe460 (k-sk_lock-AF_INET6){+.+.}-{0:0}, at: __inet6_bind+0x301/0xf30
locks held by kworker/u8:10/21223: 4, last CPU#1:
 #0: ffff8881be1f0940 ((wq_completion)krds_cp_wq#17/0){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #1: ffffc9000717fc40 ((work_completion)(&(&cp->cp_conn_w)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #2: ffff88816ba62180 (&tc->t_conn_path_lock){+.+.}-{4:4}, at: rds_tcp_conn_path_connect+0x1cc/0x920
 #3: ffffffff8fd5ce60 (rcu_read_lock){....}-{1:3}, at: __inet_dev_addr_type+0x159/0x560
locks held by kworker/u8:12/21225: 2, last CPU#1:
 #0: ffff8881110b2140 ((wq_completion)bat_events){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #1: ffffc9000714fc40 ((work_completion)(&(&bat_priv->tt.work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
locks held by kworker/1:2/21662: 2, last CPU#1:
 #0: ffff88810006b140 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
 #1: ffffc900200cfc40 ((work_completion)(&data->dm_alert_work)){+.+.}-{0:0}, at: process_scheduled_works+0x97a/0x1630
locks held by syz.1.15048/29492: 2, on CPU#1:
 #0: ffffffff9124c7c8 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x524/0x780
 #1: ffffffff9125b000 (rtnl_mutex){+.+.}-{4:4}, at: cangw_pernet_exit_batch+0x20/0x90
locks held by syz.1.15048/29497: 2, on CPU#1:
 #0: ffffffff9124c7c8 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x524/0x780
 #1: ffffffff9125b000 (rtnl_mutex){+.+.}-{4:4}, at: cangw_pernet_exit_batch+0x20/0x90
locks held by syz.2.15081/29622: 1, last CPU#1:
 #0: ffffffff9125b000 (rtnl_mutex){+.+.}-{4:4}, at: tun_chr_close+0x3e/0x1c0
locks held by syz-executor/29631: 1, on CPU#1:
 #0: ffffffff9125b000 (rtnl_mutex){+.+.}-{4:4}, at: inet_rtm_newaddr+0x470/0x19f0
locks held by syz.5.15083/29637: 2, last CPU#1:
 #0: ffff8881a603f180 (&mm->mmap_lock){++++}-{4:4}, at: vm_mmap_pgoff+0x1dd/0x4e0
 #1: ffffffff8feb1df0 (remove_cache_srcu){.+.+}-{0:0}, at: srcu_read_lock+0x27/0x60
locks held by syz.5.15083/29639: 1, on CPU#1:
 #0: ffffffff9125b000 (rtnl_mutex){+.+.}-{4:4}, at: __tun_chr_ioctl+0x3da/0x1e70
locks held by syz.5.15083/29640: 1, on CPU#1:
 #0: ffffffff9125b000 (rtnl_mutex){+.+.}-{4:4}, at: tun_chr_close+0x3e/0x1c0
locks held by syz.5.15083/29641: 1, on CPU#1:
 #0: ffffffff9125b000 (rtnl_mutex){+.+.}-{4:4}, at: rtnetlink_rcv_msg+0x767/0xc00
locks held by syz.5.15083/29642: 1, on CPU#1:
 #0: ffffffff9125b000 (rtnl_mutex){+.+.}-{4:4}, at: rtnetlink_rcv_msg+0x767/0xc00
locks held by syz.5.15083/29643: 1, on CPU#1:
 #0: ffffffff9125b000 (rtnl_mutex){+.+.}-{4:4}, at: dev_ioctl+0x7a4/0x1150

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 35 Comm: khungtaskd Not tainted syzkaller #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+0xe8/0x150
 nmi_cpu_backtrace+0x274/0x2d0
 nmi_trigger_cpumask_backtrace+0x17d/0x390
 sys_info+0x135/0x170
 watchdog+0xfd7/0x1030
 kthread+0x38b/0x480
 ret_from_fork+0x514/0xb70
 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: 5651 Comm: kworker/u8:3 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: krds_cp_wq#14/0 rds_connect_worker
RIP: 0010:check_preemption_disabled+0x6/0xd0
Code: c7 c6 60 17 6e 8c eb 1c 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41 57 41 56 53 <65> 8b 05 1b 4d aa 08 65 48 8b 0d eb 4c aa 08 85 c9 74 0c 5b 41 5e
RSP: 0018:ffffc90000006c78 EFLAGS: 00000202
RAX: 8000000000000102 RBX: 0000000000000001 RCX: ffff888170831e00
RDX: 8000000000000100 RSI: ffffffff8c13a3a0 RDI: ffffffff8c6e1780
RBP: ffffc90000006d98 R08: 0000000000000001 R09: ffff888120e33478
R10: dffffc0000000000 R11: fffff91fdc8112ea R12: ffffe8fee4089728
R13: dffffc0000000000 R14: 1ffff92000000da0 R15: ffffffff8fc289e0
FS:  0000000000000000(0000) GS:ffff88818c4ab000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7f6e66034c CR3: 000000003ea0a000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 trace_call_bpf+0x92/0xb80
 perf_trace_run_bpf_submit+0x78/0x170
 perf_trace_lock_acquire+0x346/0x440
 lock_acquire+0x303/0x350
 unwind_next_frame+0xac/0x2550
 arch_stack_walk+0x11b/0x150
 stack_trace_save+0xa9/0x100
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x40/0x50
 __kasan_slab_free+0x5c/0x80
 kmem_cache_free+0x182/0x650
 nft_synproxy_eval_v4+0x36a/0x4e0
 nft_synproxy_do_eval+0x389/0x5d0
 nft_do_chain+0x132b/0x1b10
 nft_do_chain_ipv4+0x195/0x290
 nf_hook_slow+0xc5/0x220
 NF_HOOK+0x21f/0x3c0
 NF_HOOK+0x336/0x3c0
 process_backlog+0xa6b/0x18b0
 __napi_poll+0xaa/0x330
 net_rx_action+0x61d/0xf50
 handle_softirqs+0x226/0x860
 do_softirq+0x77/0xd0
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x100/0x140
 __inet6_bind+0x386/0xf30
 kernel_bind+0x13e/0x1c0
 rds_tcp_conn_path_connect+0x53b/0x920
 rds_connect_worker+0x1d8/0x290
 process_scheduled_works+0xc3d/0x1630
 worker_thread+0xa47/0xfb0
 kthread+0x38b/0x480
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
