INFO: task syz.5.6444:26981 blocked for more than 159 seconds.
      Tainted: G             L       syzkaller #0
      Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.5.6444      state:D stack:27800 pid:26981 tgid:26980 ppid:22286  task_flags:0x40044c flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5584 [inline]
 __schedule+0x1b47/0x5b40 kernel/sched/core.c:7387
 __schedule_loop kernel/sched/core.c:7464 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7479
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7536
 rwsem_down_read_slowpath+0x6d8/0x980 kernel/locking/rwsem.c:1114
 __down_read_common kernel/locking/rwsem.c:1291 [inline]
 __down_read kernel/locking/rwsem.c:1304 [inline]
 down_read+0x97/0x320 kernel/locking/rwsem.c:1576
 mmap_read_lock include/linux/mmap_lock.h:586 [inline]
 exit_mm+0x77/0x240 kernel/exit.c:562
 do_exit+0x6a8/0x2380 kernel/exit.c:967
 do_group_exit+0x22d/0x2f0 kernel/exit.c:1123
 get_signal+0x1216/0x12c0 kernel/signal.c:3112
 arch_do_signal_or_restart+0xbb/0x860 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
 exit_to_user_mode_loop+0x10e/0x770 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:343 [inline]
 do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3b9e39e199
RSP: 002b:00007f3b9f354028 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffa2 RBX: 00007f3b9e625fa0 RCX: 00007f3b9e39e199
RDX: 00000000000000fb RSI: 0000000000000800 RDI: 0000000000000002
RBP: 00007f3b9e4358e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3b9e626038 R14: 00007f3b9e625fa0 R15: 00007ffd42814408
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 34 Comm: khungtaskd Tainted: G             L       syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:123
 nmi_trigger_cpumask_backtrace+0x17d/0x390 lib/nmi_backtrace.c:66
 trigger_all_cpu_backtrace include/linux/nmi.h:164 [inline]
 __sys_info lib/sys_info.c:157 [inline]
 sys_info+0x135/0x170 lib/sys_info.c:165
 check_hung_uninterruptible_tasks kernel/hung_task.c:377 [inline]
 watchdog+0x1073/0x10f0 kernel/hung_task.c:598
 kthread+0x38b/0x480 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 22025 Comm: kworker/u8:22 Tainted: G             L       syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Workqueue: wg-kex-wg2 wg_packet_handshake_send_worker
RIP: 0010:__find_rr_leaf+0x121/0x740 net/ipv6/route.c:843
Code: 80 f2 e0 8e 48 c1 e8 03 48 89 44 24 70 4c 89 7c 24 38 4d 85 ff 74 4e 49 8d 9e 90 00 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 28 <84> c0 75 21 8b 1b 89 df 44 8b 64 24 4c 44 89 e6 e8 7a 00 1f f7 44
RSP: 0018:ffffc90000006960 EFLAGS: 00000a06
RAX: 0000000000000000 RBX: ffff888037d08890 RCX: ffff888020bc3e80
RDX: 8000000000000100 RSI: 0000000000000100 RDI: 0000000000000000