INFO: task syz.0.8154:1383 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.8154      state:D stack:25232 pid:1383  tgid:1382  ppid:5842   task_flags:0x400140 flags:0x00004004
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 schedule_timeout+0x9a/0x270
 wait_for_completion+0x2bf/0x5d0
 disable_device+0x1c6/0x320
 __ib_unregister_device+0x2cb/0x3f0
 ib_unregister_device_and_put+0xb8/0xf0
 nldev_dellink+0x2d1/0x320
 rdma_nl_rcv+0x6ae/0x980
 netlink_unicast+0x82f/0x9e0
 netlink_sendmsg+0x805/0xb30
 __sock_sendmsg+0x21c/0x270
 ____sys_sendmsg+0x505/0x830
 ___sys_sendmsg+0x21f/0x2a0
 __x64_sys_sendmsg+0x19b/0x260
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f190658ebe9
RSP: 002b:00007f1907357038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f19067b5fa0 RCX: 00007f190658ebe9
RDX: 0000000020000000 RSI: 00002000000039c0 RDI: 0000000000000006
RBP: 00007f1906611e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f19067b6038 R14: 00007f19067b5fa0 R15: 00007ffebadd5a48
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 34 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+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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5806 Comm: sshd 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
RIP: 0010:next_bits+0x583/0x870
Code: 00 00 e8 b0 74 ee fc 49 c7 c4 ff ff ff ff 89 d9 49 d3 ec 41 80 3c 2f 00 48 8b 5c 24 08 74 08 48 89 df e8 e0 dd 51 fd 4c 21 23 <4c> 8b 64 24 48 41 0f b6 04 2c 84 c0 0f 85 36 01 00 00 4c 8b 7c 24
RSP: 0000:ffffc9000342ee88 EFLAGS: 00000202
RAX: ffffffff84d13680 RBX: ffffc9000342ef80 RCX: 000000000000003b
RDX: 0000000000000000 RSI: 000000000000003b RDI: 0000000000000040
RBP: dffffc0000000000 R08: 000000000000000a R09: 000000000000000a
R10: dffffc0000000000 R11: ffffed102417bbbd R12: 000000000000001f
R13: 0000000000000005 R14: 1ffff92000685df1 R15: 1ffff92000685df0
FS:  00007fd7fb891800(0000) GS:ffff8881a3c1b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd7fb379000 CR3: 0000000026dda000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
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/0x2410
 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: 0033:0x7fd7fb50792f
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:00007fff04f55c78 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 00007fff04f55e30 RCX: 000000000000d010
RDX: ffffffffffffffff RSI: 00000000002c0000 RDI: 00007fd7fb379000
RBP: 0000556bf3832750 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000556bf3831460
R13: 0000556be2eca937 R14: 0000556bf382c220 R15: 0000556bf38325e0
 </TASK>
