INFO: task kworker/u8:2:35 blocked for more than 143 seconds.
Not tainted 6.9.0-next-20240523-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:2 state:D stack:20472 pid:35 tgid:35 ppid:2 flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6837
schedule_timeout+0xb0/0x310 kernel/time/timer.c:2557
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common kernel/sched/completion.c:116 [inline]
wait_for_common kernel/sched/completion.c:127 [inline]
wait_for_completion+0x355/0x620 kernel/sched/completion.c:148
__flush_workqueue+0x7d6/0x1710 kernel/workqueue.c:3988
peer_remove_after_dead+0x9d/0x1a0 drivers/net/wireguard/peer.c:116
wg_peer_remove_all+0x453/0x4f0 drivers/net/wireguard/peer.c:183
wg_destruct+0x173/0x2e0 drivers/net/wireguard/device.c:254
netdev_run_todo+0xe1a/0x1000 net/core/dev.c:10692
default_device_exit_batch+0xa14/0xa90 net/core/dev.c:11760
ops_exit_list net/core/net_namespace.c:178 [inline]
cleanup_net+0x89d/0xcc0 net/core/net_namespace.c:640
process_one_work kernel/workqueue.c:3248 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3329
worker_thread+0x86d/0xd50 kernel/workqueue.c:3409
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
INFO: task jbd2/sda1-8:4507 blocked for more than 143 seconds.
Not tainted 6.9.0-next-20240523-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jbd2/sda1-8 state:D stack:24144 pid:4507 tgid:4507 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6837
io_schedule+0x8d/0x110 kernel/sched/core.c:9043
bit_wait_io+0x12/0xd0 kernel/sched/wait_bit.c:209
__wait_on_bit+0xb0/0x2f0 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x1d5/0x260 kernel/sched/wait_bit.c:64
wait_on_buffer include/linux/buffer_head.h:415 [inline]
journal_wait_on_commit_record fs/jbd2/commit.c:171 [inline]
jbd2_journal_commit_transaction+0x3d7f/0x6760 fs/jbd2/commit.c:887
kjournald2+0x463/0x850 fs/jbd2/journal.c:201
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
INFO: task syz-executor.0:7642 blocked for more than 144 seconds.
Not tainted 6.9.0-next-20240523-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:20288 pid:7642 tgid:7642 ppid:7630 flags:0x00000002
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6837
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
cgroup_lock include/linux/cgroup.h:368 [inline]
cgroup_kn_lock_live+0xe6/0x290 kernel/cgroup/cgroup.c:1662
__cgroup_procs_write+0xf4/0x4f0 kernel/cgroup/cgroup.c:5148
cgroup_procs_write+0x29/0x50 kernel/cgroup/cgroup.c:5188
cgroup_file_write+0x2ce/0x6d0 kernel/cgroup/cgroup.c:4092
kernfs_fop_write_iter+0x3a1/0x500 fs/kernfs/file.c:334
new_sync_write fs/read_write.c:497 [inline]
vfs_write+0xa72/0xc90 fs/read_write.c:590
ksys_write+0x1a0/0x2c0 fs/read_write.c:643
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff04ac7bc2f
RSP: 002b:00007fff778b63b0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007ff04ac7bc2f
RDX: 0000000000000001 RSI: 00007fff778b6400 RDI: 0000000000000003
RBP: 00007fff778b69a0 R08: 0000000000000000 R09: 00007fff778b6207
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000001
R13: 00007fff778b6400 R14: 00007fff778b6960 R15: 00007fff778b69a0
INFO: task syz-executor.2:7680 blocked for more than 144 seconds.
Not tainted 6.9.0-next-20240523-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:20288 pid:7680 tgid:7680 ppid:7677 flags:0x00000002
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6837
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
cgroup_lock include/linux/cgroup.h:368 [inline]
cgroup_kn_lock_live+0xe6/0x290 kernel/cgroup/cgroup.c:1662
__cgroup_procs_write+0xf4/0x4f0 kernel/cgroup/cgroup.c:5148
cgroup_procs_write+0x29/0x50 kernel/cgroup/cgroup.c:5188
cgroup_file_write+0x2ce/0x6d0 kernel/cgroup/cgroup.c:4092
kernfs_fop_write_iter+0x3a1/0x500 fs/kernfs/file.c:334
new_sync_write fs/read_write.c:497 [inline]
vfs_write+0xa72/0xc90 fs/read_write.c:590
ksys_write+0x1a0/0x2c0 fs/read_write.c:643
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f93bae7bc2f
RSP: 002b:00007fffced81070 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f93bae7bc2f
RDX: 0000000000000001 RSI: 00007fffced810c0 RDI: 0000000000000003
RBP: 00007fffced81660 R08: 0000000000000000 R09: 00007fffced80ec7
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000001
R13: 00007fffced810c0 R14: 00007fffced81620 R15: 00007fffced81660
INFO: task syz-executor.4:7809 blocked for more than 145 seconds.
Not tainted 6.9.0-next-20240523-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:23984 pid:7809 tgid:7808 ppid:7136 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x17e8/0x4a20 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6837
schedule_timeout+0xb0/0x310 kernel/time/timer.c:2557
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common kernel/sched/completion.c:116 [inline]
wait_for_common kernel/sched/completion.c:127 [inline]
wait_for_completion+0x355/0x620 kernel/sched/completion.c:148
__flush_work+0xaa9/0xd00 kernel/workqueue.c:4227
__lru_add_drain_all+0x4f6/0x560 mm/swap.c:902
invalidate_bdev+0x76/0xa0 block/bdev.c:100
reconfigure_super+0x5dd/0x880 fs/super.c:1095
do_remount fs/namespace.c:2892 [inline]
path_mount+0xc22/0xfa0 fs/namespace.c:3671
do_mount fs/namespace.c:3692 [inline]
__do_sys_mount fs/namespace.c:3898 [inline]
__se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3875
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f314267e5ea
RSP: 002b:00007f3143327ef8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f3143327f80 RCX: 00007f314267e5ea
RDX: 0000000020000180 RSI: 0000000020000100 RDI: 0000000000000000
RBP: 0000000020000180 R08: 00007f3143327f80 R09: 0000000000000061
R10: 0000000000000061 R11: 0000000000000202 R12: 0000000020000100
R13: 00007f3143327f40 R14: 0000000000000000 R15: 00000000200001c0
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e333ee0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#0: ffffffff8e333ee0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#0: ffffffff8e333ee0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
4 locks held by kworker/u8:2/35:
#0: ffff888015ed5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline]
#0: ffff888015ed5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329
#1: ffffc90000ab7d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline]
#1: ffffc90000ab7d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329
#2: ffffffff8f5daf50 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:594
#3: ffff888050759408 (&wg->device_update_lock){+.+.}-{3:3}, at: wg_destruct+0x110/0x2e0 drivers/net/wireguard/device.c:249
1 lock held by kworker/u9:1/4488:
#0: ffffffff8e3620d0 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: do_exit+0x6b4/0x27e0 kernel/exit.c:833
1 lock held by dhcpcd/4758:
#0: ffffffff8e3620d0 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: copy_process+0x21f1/0x3dc0 kernel/fork.c:2486
2 locks held by getty/4845:
#0: ffff88802edb80a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f162f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
1 lock held by syz-fuzzer/5079:
#0: ffffffff8e3620d0 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: do_exit+0x6b4/0x27e0 kernel/exit.c:833
1 lock held by syz-fuzzer/5080:
#0: ffffffff8e3620d0 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: do_exit+0x6b4/0x27e0 kernel/exit.c:833
1 lock held by syz-fuzzer/5081:
#0: ffffffff8e3620d0 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: do_exit+0x6b4/0x27e0 kernel/exit.c:833
1 lock held by syz-fuzzer/5082:
#0: ffffffff8e3620d0 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: do_exit+0x6b4/0x27e0 kernel/exit.c:833
1 lock held by syz-fuzzer/5083:
#0: ffffffff8e3620d0 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: do_exit+0x6b4/0x27e0 kernel/exit.c:833
1 lock held by syz-fuzzer/5084:
#0: ffffffff8e3620d0 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: do_exit+0x6b4/0x27e0 kernel/exit.c:833
1 lock held by syz-fuzzer/5085:
#0: ffffffff8e3620d0 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: do_exit+0x6b4/0x27e0 kernel/exit.c:833
1 lock held by syz-fuzzer/5093:
#0: ffffffff8e3620d0 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: do_exit+0x6b4/0x27e0 kernel/exit.c:833
1 lock held by syz-fuzzer/5094:
#0: ffffffff8e3620d0 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: do_exit+0x6b4/0x27e0 kernel/exit.c:833
1 lock held by syz-fuzzer/5097:
#0: ffffffff8e3620d0 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: do_exit+0x6b4/0x27e0 kernel/exit.c:833
1 lock held by syz-fuzzer/5098:
#0: ffffffff8e3620d0 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: do_exit+0x6b4/0x27e0 kernel/exit.c:833
1 lock held by syz-fuzzer/5099:
#0: ffffffff8e3620d0 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: do_exit+0x6b4/0x27e0 kernel/exit.c:833
1 lock held by syz-fuzzer/5387:
#0: ffffffff8e3620d0 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: do_exit+0x6b4/0x27e0 kernel/exit.c:833
1 lock held by kworker/u9:6/5122:
#0: ffffffff8e3620d0 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: do_exit+0x6b4/0x27e0 kernel/exit.c:833
1 lock held by kworker/u9:7/5123:
#0: ffffffff8e3620d0 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: do_exit+0x6b4/0x27e0 kernel/exit.c:833
1 lock held by kworker/0:7/5163:
#0: ffffffff8e3620d0 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: do_exit+0x6b4/0x27e0 kernel/exit.c:833
1 lock held by kworker/u8:8/5243:
#0: ffffffff8e3620d0 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: do_exit+0x6b4/0x27e0 kernel/exit.c:833
1 lock held by kworker/u8:9/5244:
#0: ffffffff8e3620d0 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: do_exit+0x6b4/0x27e0 kernel/exit.c:833
1 lock held by kworker/u8:10/5245:
#0: ffffffff8e3620d0 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: do_exit+0x6b4/0x27e0 kernel/exit.c:833
1 lock held by syz-executor.4/7111:
#0: ffffffff8e3620d0 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: do_exit+0x6b4/0x27e0 kernel/exit.c:833
1 lock held by syz-executor.1/7235:
#0: ffffffff8e3620d0 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: do_exit+0x6b4/0x27e0 kernel/exit.c:833
1 lock held by syz-executor.0/7630:
#0: ffffffff8e3620d0 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: do_exit+0x6b4/0x27e0 kernel/exit.c:833
3 locks held by syz-executor.0/7642:
#0: ffff8880235a2420 (sb_writers#10){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2854 [inline]
#0: ffff8880235a2420 (sb_writers#10){.+.+}-{0:0}, at: vfs_write+0x227/0xc90 fs/read_write.c:586
#1: ffff888067221c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1eb/0x500 fs/kernfs/file.c:325
#2: ffffffff8e361ee8 (cgroup_mutex){+.+.}-{3:3}, at: cgroup_lock include/linux/cgroup.h:368 [inline]
#2: ffffffff8e361ee8 (cgroup_mutex){+.+.}-{3:3}, at: cgroup_kn_lock_live+0xe6/0x290 kernel/cgroup/cgroup.c:1662
1 lock held by syz-executor.3/7643:
#0: ffffffff8e3620d0 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: do_exit+0x6b4/0x27e0 kernel/exit.c:833
6 locks held by syz-executor.3/7649:
1 lock held by syz-executor.2/7677:
#0: ffffffff8e3620d0 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: do_exit+0x6b4/0x27e0 kernel/exit.c:833
3 locks held by syz-executor.2/7680:
#0: ffff8880235a2420 (sb_writers#10){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2854 [inline]
#0: ffff8880235a2420 (sb_writers#10){.+.+}-{0:0}, at: vfs_write+0x227/0xc90 fs/read_write.c:586
#1: ffff888066c66c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1eb/0x500 fs/kernfs/file.c:325
#2: ffffffff8e361ee8 (cgroup_mutex){+.+.}-{3:3}, at: cgroup_lock include/linux/cgroup.h:368 [inline]
#2: ffffffff8e361ee8 (cgroup_mutex){+.+.}-{3:3}, at: cgroup_kn_lock_live+0xe6/0x290 kernel/cgroup/cgroup.c:1662
1 lock held by syz-executor.1/7778:
2 locks held by syz-executor.4/7809:
#0: ffff88806368e0e0 (&type->s_umount_key#67){+.+.}-{3:3}, at: do_remount fs/namespace.c:2889 [inline]
#0: ffff88806368e0e0 (&type->s_umount_key#67){+.+.}-{3:3}, at: path_mount+0xbdb/0xfa0 fs/namespace.c:3671
#1: ffffffff8e3eca48 (lock#3){+.+.}-{3:3}, at: __lru_add_drain_all+0x66/0x560 mm/swap.c:857
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 30 Comm: khungtaskd Not tainted 6.9.0-next-20240523-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xfde/0x1020 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 7778 Comm: syz-executor.1 Not tainted 6.9.0-next-20240523-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:common_interrupt_return+0xf/0xcc arch/x86/entry/entry_64.S:561
Code: 01 ca fc 6a ff e8 61 03 00 00 48 89 c4 48 89 e7 e8 a6 90 ea ff e9 91 04 00 00 90 66 90 b9 48 00 00 00 65 48 8b 15 71 64 62 74 <83> e2 fe 89 d0 48 c1 ea 20 0f 30 eb 35 cc cc cc 41 5f 41 5e 41 5d
RSP: 0018:ffffc9001444ff58 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000048
RDX: 0000000000000001 RSI: ffffffff8bcabaa0 RDI: ffffffff8c1fe6c0
RBP: 0000000000000000 R08: ffffffff8fad53af R09: 1ffffffff1f5aa75
R10: dffffc0000000000 R11: fffffbfff1f5aa76 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS: 00007f9d06a806c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9d06a7ff00 CR3: 0000000052ff0000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace: