INFO: task syz-executor.3:4906 blocked for more than 140 seconds.
      Not tainted 4.19.211-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.3  D28648  4906   8157 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2828 [inline]
 __schedule+0x887/0x2040 kernel/sched/core.c:3517
 schedule+0x8d/0x1b0 kernel/sched/core.c:3561
 schedule_timeout+0x92d/0xfe0 kernel/time/timer.c:1794
 do_wait_for_common kernel/sched/completion.c:83 [inline]
 __wait_for_common kernel/sched/completion.c:104 [inline]
 wait_for_common+0x29c/0x470 kernel/sched/completion.c:115
 rdma_destroy_id+0x4c9/0x950 drivers/infiniband/core/cma.c:1750
 ucma_close+0x140/0x360 drivers/infiniband/core/ucma.c:1819
 __fput+0x2ce/0x890 fs/file_table.c:278
 task_work_run+0x148/0x1c0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:193 [inline]
 exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167
 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
 do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f4de9405f7b
Code: Bad RIP value.
RSP: 002b:00007ffc8517f600 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007f4de9405f7b
RDX: 00007f4de8fc8a78 RSI: ffffffffffffffff RDI: 0000000000000003
RBP: 00007f4de9575980 R08: 0000000000000000 R09: 00007f4de8fc8000
R10: 00007f4de8fc8a80 R11: 0000000000000293 R12: 0000000000152994
R13: 00007ffc8517f700 R14: 00007f4de9573f80 R15: 0000000000000032

Showing all locks held in the system:
1 lock held by khungtaskd/1570:
 #0: 00000000c5506327 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441
1 lock held by in:imklog/7797:
 #0: 00000000a5206488 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767

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

NMI backtrace for cpu 0
CPU: 0 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline]
 watchdog+0x991/0xe60 kernel/hung_task.c:287
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4686 Comm: systemd-journal Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/paravirt.h:794 [inline]
RIP: 0010:syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
RIP: 0010:do_syscall_64+0x1f3/0x620 arch/x86/entry/common.c:296
Code: 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 a8 03 00 00 48 83 3d 89 0a f1 08 00 0f 84 1f 03 00 00 e8 5e 0d 62 00 fa <66> 0f 1f 44 00 00 65 48 8b 1c 25 c0 df 01 00 e8 39 35 67 00 48 89
RSP: 0018:ffff8880a103ff28 EFLAGS: 00000093
RAX: ffff8880a1036400 RBX: 0000000000000000 RCX: ffffffff810077d3
RDX: 0000000000000000 RSI: ffffffff81007812 RDI: 0000000000000005
RBP: ffff8880a103ff58 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000100
R13: ffffffff89f18298 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f3fcf7e08c0(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3fccd7d000 CR3: 00000000a1070000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f3fcea9b687
Code: 00 b8 ff ff ff ff c3 0f 1f 40 00 48 8b 05 09 d8 2b 00 64 c7 00 5f 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 d7 2b 00 f7 d8 64 89 01 48
RSP: 002b:00007ffc98e608c8 EFLAGS: 00000293 ORIG_RAX: 0000000000000053
RAX: fffffffffffffffe RBX: 00007ffc98e63930 RCX: 00007f3fcea9b687
RDX: 0000000000000000 RSI: 00000000000001ed RDI: 000055fd1b4288a0
RBP: 00007ffc98e60900 R08: 000055fd197ca3e5 R09: 0000000000000018
R10: 0000000000000069 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000001 R14: 000055fd1b4288a0 R15: 00007ffc98e60f40