INFO: task syz-executor.5:13886 blocked for more than 143 seconds.
      Not tainted 5.3.0-rc3+ #163
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.5  D29080 13886  12593 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:3254 [inline]
 __schedule+0x755/0x1580 kernel/sched/core.c:3880
 schedule+0xa8/0x270 kernel/sched/core.c:3944
 schedule_timeout+0x717/0xc50 kernel/time/timer.c:1783
 do_wait_for_common kernel/sched/completion.c:83 [inline]
 __wait_for_common kernel/sched/completion.c:104 [inline]
 wait_for_common kernel/sched/completion.c:115 [inline]
 wait_for_completion+0x29c/0x440 kernel/sched/completion.c:136
 crypto_wait_req include/linux/crypto.h:685 [inline]
 _aead_recvmsg crypto/algif_aead.c:309 [inline]
 aead_recvmsg+0x11e3/0x16a0 crypto/algif_aead.c:330
 sock_recvmsg_nosec net/socket.c:871 [inline]
 sock_recvmsg net/socket.c:889 [inline]
 sock_recvmsg+0xce/0x110 net/socket.c:885
 ___sys_recvmsg+0x271/0x5a0 net/socket.c:2480
 do_recvmmsg+0x27e/0x7a0 net/socket.c:2601
 __sys_recvmmsg+0xe5/0x270 net/socket.c:2682
 __do_sys_recvmmsg net/socket.c:2703 [inline]
 __se_sys_recvmmsg net/socket.c:2696 [inline]
 __x64_sys_recvmmsg+0xe6/0x140 net/socket.c:2696
 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459829
Code: 24 60 48 8b 42 08 48 8b 4a 10 48 8b 5a 18 48 8b 72 20 48 8b 7a 28 48 8b 3f 4c 8b 42 30 48 8b 52 38 48 85 d2 76 62 48 89 44 24 <58> 4c 89 44 24 28 48 89 0c 24 48 89 5c 24 08 48 c7 44 24 10 00 00
RSP: 002b:00007f543d749c78 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000459829
RDX: 0000000000000030 RSI: 0000000020007e00 RDI: 0000000000000004
RBP: 000000000075bf20 R08: 0000000020008000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f543d74a6d4
R13: 00000000004c6d75 R14: 00000000004dc180 R15: 00000000ffffffff
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 1057 Comm: khungtaskd Not tainted 5.3.0-rc3+ #163
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 nmi_cpu_backtrace.cold+0x70/0xb2 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x23b/0x28b lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline]
 watchdog+0x9d0/0xef0 kernel/hung_task.c:289
 kthread+0x361/0x430 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 21 Comm: kworker/u4:1 Not tainted 5.3.0-rc3+ #163
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_nc_worker
RIP: 0010:trace_lock_acquire include/trace/events/lock.h:13 [inline]
RIP: 0010:lock_acquire+0x330/0x410 kernel/locking/lockdep.c:4411
Code: 65 ff 0d 8b 24 a9 7e 0f 85 0e fe ff ff e8 58 8d a7 ff e9 04 fe ff ff 65 ff 05 74 24 a9 7e 48 8b 05 6d 03 49 08 e8 00 32 06 00 <85> c0 74 09 80 3d a2 a8 48 08 00 74 4f 65 ff 0d 54 24 a9 7e 0f 85
RSP: 0018:ffff8880a9a47c80 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 1ffffffff134b556
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff89a578b8
RBP: ffff8880a9a47cc8 R08: 1ffffffff134af17 R09: fffffbfff134af18
R10: fffffbfff134af17 R11: ffffffff89a578bf R12: ffffffff88dac300
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002
FS:  0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff600400 CR3: 000000008e9ae000 CR4: 00000000001406e0
Call Trace:
 rcu_lock_acquire include/linux/rcupdate.h:208 [inline]
 rcu_read_lock include/linux/rcupdate.h:592 [inline]
 batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:407 [inline]
 batadv_nc_worker+0x117/0x760 net/batman-adv/network-coding.c:718
 process_one_work+0x9af/0x1740 kernel/workqueue.c:2269
 worker_thread+0x98/0xe40 kernel/workqueue.c:2415
 kthread+0x361/0x430 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352