INFO: task kworker/u8:3:5868 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:3    state:D stack:22600 pid:5868  tgid:5868  ppid:2      task_flags:0x4208060 flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x7e6/0x1350
 rdma_dev_change_netns+0x39/0x300
 rdma_dev_exit_net+0x203/0x340
 ops_undo_list+0x49a/0x990
 cleanup_net+0x4c5/0x800
 process_scheduled_works+0xae1/0x17b0
 worker_thread+0x8a0/0xda0
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
INFO: task syz.1.2440:14699 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.2440      state:D stack:23824 pid:14699 tgid:14698 ppid:5838   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: 0033:0x7f152e58ebe9
RSP: 002b:00007f152f31c038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f152e7b5fa0 RCX: 00007f152e58ebe9
RDX: 0000000000008000 RSI: 0000200000003680 RDI: 0000000000000003
RBP: 00007f152e611e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f152e7b6038 R14: 00007f152e7b5fa0 R15: 00007fff4a534c78
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 18142 Comm: syz-executor 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:psi_group_change+0x261/0x1050
Code: 84 c0 0f 85 8b 02 00 00 ff 4d 00 83 fb 20 72 17 e9 db 00 00 00 80 3d e5 0b 08 0e 00 74 1c 83 fb 20 0f 83 c9 00 00 00 41 f7 d6 <ff> c3 45 21 f7 0f 85 77 ff ff ff e9 da 03 00 00 48 8b 44 24 78 0f
RSP: 0000:ffffc900095a73a8 EFLAGS: 00000083
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000003
RDX: 0000000000000000 RSI: dffffc0000000000 RDI: 000000000000000a
RBP: ffff88804b023f0c R08: ffff88804b023f00 R09: 0000000000000100
R10: ffff88804b023f04 R11: ffff88804b023f08 R12: 0000000000000003
R13: 1ffff110096047e1 R14: 00000000fffffff7 R15: 0000000000000008
FS:  0000555588ce9500(0000) GS:ffff8880b861a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff084f8e340 CR3: 000000003aedc000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 psi_task_change+0x118/0x340
 psi_memstall_leave+0x219/0x310
 __alloc_pages_direct_reclaim+0x23e/0x300
 __alloc_pages_slowpath+0x5ff/0xce0
 __alloc_frozen_pages_noprof+0x319/0x370
 alloc_pages_mpol+0x232/0x4a0
 alloc_pages_noprof+0xa9/0x190
 folio_alloc_noprof+0x1e/0x30
 filemap_alloc_folio_noprof+0xdf/0x470
 __filemap_get_folio+0x3f2/0xaf0
 filemap_fault+0x89d/0x1200
 __do_fault+0x138/0x390
 __handle_mm_fault+0x3611/0x5440
 handle_mm_fault+0x40a/0x8e0
 do_user_addr_fault+0xa81/0x1390
 exc_page_fault+0x76/0xf0
 asm_exc_page_fault+0x26/0x30
RIP: 0033:0x7fe8a113a84a
Code: Unable to access opcode bytes at 0x7fe8a113a820.
RSP: 002b:00007ffd92fc2030 EFLAGS: 00010246
RAX: 0000000000000005 RBX: 00007ffd92fc2590 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 00007ffd92fc3930 RDI: 00007ffd92fc28a5
RBP: 0000000000000005 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000000 R12: 0000000000000005
R13: 00007ffd92fc2710 R14: 00007ffd92fc3930 R15: 00007fe8a1389060
 </TASK>
