INFO: task syz-executor.2:12056 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.2  D27176 12056   8139 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
 usb_start_wait_urb+0x14b/0x4c0 drivers/usb/core/message.c:62
 usb_bulk_msg+0x226/0x550 drivers/usb/core/message.c:253
 proc_bulk+0x3de/0x860 drivers/usb/core/devio.c:1211
 usbdev_do_ioctl+0x696/0x3030 drivers/usb/core/devio.c:2435
 usbdev_ioctl+0x21/0x30 drivers/usb/core/devio.c:2585
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688
 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705
 __do_sys_ioctl fs/ioctl.c:712 [inline]
 __se_sys_ioctl fs/ioctl.c:710 [inline]
 __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f673f91b0f9
Code: Bad RIP value.
RSP: 002b:00007f673de8d168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f673fa3af80 RCX: 00007f673f91b0f9
RDX: 0000000020000100 RSI: 00000000c0185502 RDI: 0000000000000003
RBP: 00007f673f976ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc7172c71f R14: 00007f673de8d300 R15: 0000000000022000

Showing all locks held in the system:
1 lock held by khungtaskd/1570:
 #0: 000000006ea24263 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441
1 lock held by in:imklog/7799:
 #0: 0000000038cc03d7 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767
2 locks held by agetty/8022:
 #0: 0000000070423a43 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
 #1: 000000006e3047f7 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1950 drivers/tty/n_tty.c:2154

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

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 01/21/2023
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: 9527 Comm: kworker/u4:7 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Workqueue: bat_events batadv_nc_worker
RIP: 0010:lock_release+0x42/0x8b0 kernel/locking/lockdep.c:3917
Code: fd 53 48 83 ec 78 48 c7 44 24 18 b3 8a b5 41 4c 8d 64 24 18 48 c7 44 24 20 ac 2a b7 89 49 c1 ec 03 48 c7 44 24 28 f0 49 4b 81 <49> 8d 14 04 65 48 8b 1c 25 c0 df 01 00 48 8d bb 84 08 00 00 c7 02
RSP: 0018:ffff8880534f7c00 EFLAGS: 00000a02
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffffff87d8f371
RDX: ffffffff87d8f075 RSI: 0000000000000001 RDI: ffffffff89f85fa0
RBP: ffffffff89f85fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 1ffff1100a69ef83
R13: ffffffff87d8f075 R14: 00000000000000ca R15: ffff8880a44b2800
FS:  0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9b693c3000 CR3: 00000000b3132000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 rcu_lock_release include/linux/rcupdate.h:247 [inline]
 rcu_read_unlock include/linux/rcupdate.h:681 [inline]
 batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:423 [inline]
 batadv_nc_worker+0x66c/0xd50 net/batman-adv/network-coding.c:730
 process_one_work+0x864/0x1570 kernel/workqueue.c:2153
 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415