INFO: task syz-executor.1:28290 blocked for more than 143 seconds.
      Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:22072 pid:28290 ppid:30592  flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5191 [inline]
 __schedule+0x8fc/0xda0 kernel/sched/core.c:6503
 schedule+0xcb/0x190 kernel/sched/core.c:6579
 wb_wait_for_completion+0x165/0x290 fs/fs-writeback.c:191
 __writeback_inodes_sb_nr+0x2f0/0x3d0 fs/fs-writeback.c:2620
 try_to_writeback_inodes_sb+0xa5/0xd0 fs/fs-writeback.c:2668
 ext4_nonda_switch fs/ext4/inode.c:2950 [inline]
 ext4_da_write_begin+0x243/0x760 fs/ext4/inode.c:2977
 generic_perform_write+0x314/0x610 mm/filemap.c:3753
 ext4_buffered_write_iter+0x122/0x3a0 fs/ext4/file.c:285
 ext4_file_write_iter+0x1d0/0x18e0
 __kernel_write_iter+0x323/0x770 fs/read_write.c:517
 dump_emit_page+0xa79/0xca0 fs/coredump.c:857
 dump_user_range+0x5b/0xf0 fs/coredump.c:908
 elf_core_dump+0x3d5b/0x4570 fs/binfmt_elf.c:2311
 do_coredump+0x1874/0x2900 fs/coredump.c:755
 get_signal+0x147e/0x1810 kernel/signal.c:2844
 arch_do_signal_or_restart+0x8d/0x750 arch/x86/kernel/signal.c:869
 exit_to_user_mode_loop+0x74/0x160 kernel/entry/common.c:168
 exit_to_user_mode_prepare+0xad/0x110 kernel/entry/common.c:203
 irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:309
 exc_page_fault+0xa2/0x120 arch/x86/mm/fault.c:1578
 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0xf83f7d3489
RSP: 002b:0000000020000388 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007fd9f13abf80 RCX: 00007fd9f128b5a9
RDX: 00000000200003c0 RSI: 0000000020000380 RDI: 0000000000082000
RBP: 00007fd9f12e67b0 R08: 0000000020000440 R09: 0000000020000440
R10: 0000000020000400 R11: 0000000000000206 R12: 0000000000000000
R13: 00007fffda1b274f R14: 00007fd9f207e300 R15: 0000000000022000
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 nmi_cpu_backtrace+0x4e3/0x560 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x19b/0x3e0 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
 watchdog+0xcf5/0xd40 kernel/hung_task.c:377
 kthread+0x266/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 7481 Comm: kworker/0:60 Not tainted 6.1.0-rc2-syzkaller-00105-gb229b6ca5abb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
Workqueue: events_power_efficient wg_ratelimiter_gc_entries
RIP: 0010:__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
RIP: 0010:_raw_spin_lock+0x25/0x40 kernel/locking/spinlock.c:154
Code: 00 00 00 00 00 53 48 89 fb bf 01 00 00 00 e8 62 f8 0b f7 48 8d 7b 18 31 f6 31 d2 31 c9 41 b8 01 00 00 00 45 31 c9 ff 74 24 08 <e8> 96 1f 18 f7 48 83 c4 08 48 89 df 5b e9 f9 98 19 f7 66 0f 1f 84
RSP: 0018:ffffc90010e67bd0 EFLAGS: 00000246
RAX: 1ffff11010944289 RBX: ffffffff8d636300 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8d636318
RBP: ffffc90010e67dc0 R08: 0000000000000001 R09: 0000000000000000
R10: fffffbfff1ac6c61 R11: 1ffffffff1ac6c60 R12: dffffc0000000000
R13: dffffc0000000000 R14: 0000033a87d99619 R15: ffffffff8d636420
FS:  0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffcc45a8f98 CR3: 0000000039cf7000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 spin_lock include/linux/spinlock.h:350 [inline]
 wg_ratelimiter_gc_entries+0x5c/0x4a0 drivers/net/wireguard/ratelimiter.c:63
 process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
 kthread+0x266/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>