INFO: task kworker/u4:4:3081 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:4 state:D
stack:23160 pid: 3081 ppid: 2 flags:0x00004000
Workqueue: events_unbound fsnotify_mark_destroy_workfn
Call Trace:
context_switch kernel/sched/core.c:5049 [inline]
__schedule+0x11ef/0x43c0 kernel/sched/core.c:6395
schedule+0x11b/0x1e0 kernel/sched/core.c:6478
schedule_timeout+0xbd/0x2d0 kernel/time/timer.c:2093
do_wait_for_common+0x2a2/0x450 kernel/sched/completion.c:85
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x48/0x60 kernel/sched/completion.c:138
__synchronize_srcu+0x2bb/0x350 kernel/rcu/srcutree.c:930
fsnotify_mark_destroy_workfn+0x106/0x2f0 fs/notify/mark.c:924
process_one_work+0x85f/0x1010 kernel/workqueue.c:2310
worker_thread+0xaa6/0x1290 kernel/workqueue.c:2457
kthread+0x436/0x520 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
INFO: task syz-executor:4195 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D
stack:21968 pid: 4195 ppid: 1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5049 [inline]
__schedule+0x11ef/0x43c0 kernel/sched/core.c:6395
schedule+0x11b/0x1e0 kernel/sched/core.c:6478
exp_funnel_lock kernel/rcu/tree_exp.h:313 [inline]
synchronize_rcu_expedited+0x680/0x750 kernel/rcu/tree_exp.h:845
namespace_unlock+0x23f/0x430 fs/namespace.c:1459
do_umount fs/namespace.c:1683 [inline]
path_umount+0xf64/0xfd0 fs/namespace.c:1766
ksys_umount fs/namespace.c:1789 [inline]
__do_sys_umount fs/namespace.c:1794 [inline]
__se_sys_umount fs/namespace.c:1792 [inline]
__x64_sys_umount+0x12d/0x170 fs/namespace.c:1792
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f6e8885b097
RSP: 002b:00007ffdc663c1b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: ffffffffffffffda RBX: 00007f6e888ef1ca RCX: 00007f6e8885b097
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffdc663c270
RBP: 00007ffdc663c270 R08: 00007ffdc663d270 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdc663d300
R13: 00007f6e888ef1ca R14: 0000000000020248 R15: 00007ffdc663d340
INFO: task kworker/u4:15:4535 blocked for more than 144 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:15 state:D
stack:21264 pid: 4535 ppid: 2 flags:0x00004000
Workqueue: events_unbound fsnotify_connector_destroy_workfn
Call Trace:
context_switch kernel/sched/core.c:5049 [inline]
__schedule+0x11ef/0x43c0 kernel/sched/core.c:6395
schedule+0x11b/0x1e0 kernel/sched/core.c:6478
schedule_timeout+0xbd/0x2d0 kernel/time/timer.c:2093
do_wait_for_common+0x2a2/0x450 kernel/sched/completion.c:85
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x48/0x60 kernel/sched/completion.c:138
__synchronize_srcu+0x2bb/0x350 kernel/rcu/srcutree.c:930
fsnotify_connector_destroy_workfn+0x40/0xa0 fs/notify/mark.c:234
process_one_work+0x85f/0x1010 kernel/workqueue.c:2310
worker_thread+0xaa6/0x1290 kernel/workqueue.c:2457
kthread+0x436/0x520 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
INFO: task udevd:5110 blocked for more than 145 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd state:D stack:26224 pid: 5110 ppid: 3561 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5049 [inline]
__schedule+0x11ef/0x43c0 kernel/sched/core.c:6395
schedule+0x11b/0x1e0 kernel/sched/core.c:6478
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6537
__mutex_lock_common+0xcfc/0x2400 kernel/locking/mutex.c:669
__mutex_lock kernel/locking/mutex.c:729 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
device_lock include/linux/device.h:764 [inline]
uevent_show+0x17a/0x330 drivers/base/core.c:2408
dev_attr_show+0x50/0xb0 drivers/base/core.c:2110
sysfs_kf_seq_show+0x316/0x4c0 fs/sysfs/file.c:61
seq_read_iter+0x49b/0xd50 fs/seq_file.c:230
call_read_iter include/linux/fs.h:2167 [inline]
new_sync_read fs/read_write.c:404 [inline]
vfs_read+0x759/0xd60 fs/read_write.c:485
ksys_read+0x152/0x260 fs/read_write.c:623
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f3dd22fd407
RSP: 002b:00007fff57a1ab30 EFLAGS: 00000202
ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f3dd220f880 RCX: 00007f3dd22fd407
RDX: 0000000000001000 RSI: 00005615c2978550 RDI: 0000000000000008
RBP: 00007f3dd2445ff0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 000000000000000a
R13: 00007f3dd2445ea0 R14: 0000000000000000 R15: 00005615c29556a0
INFO: task syz.1.279:5356 blocked for more than 145 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.279 state:D
stack:27472 pid: 5356 ppid: 4189 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5049 [inline]
__schedule+0x11ef/0x43c0 kernel/sched/core.c:6395
schedule+0x11b/0x1e0 kernel/sched/core.c:6478
synchronize_rcu_expedited+0x5c1/0x750 kernel/rcu/tree_exp.h:861
synchronize_rcu+0x119/0x1e0 kernel/rcu/tree.c:3802
packet_release+0x976/0xc30 net/packet/af_packet.c:3175
__sock_release net/socket.c:651 [inline]
sock_close+0xd5/0x240 net/socket.c:1345
__fput+0x234/0x930 fs/file_table.c:311
task_work_run+0x125/0x1a0 kernel/task_work.c:188
tracehook_notify_resume include/linux/tracehook.h:189 [inline]
exit_to_user_mode_loop+0x10f/0x130 kernel/entry/common.c:181
exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:214
__syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307
do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fce208dce59
RSP: 002b:00007ffc2029e138 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fce20b57da0 RCX: 00007fce208dce59
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007fce20b57da0 R08: 00007fce20b56038 R09: 0000000000000000
R10: 00000000003ff904 R11: 0000000000000246 R12: 0000000000020394
R13: 00007fce20b5609c R14: 000000000002010d R15: 00007fce20b56090
INFO: task syz.3.283:5380 blocked for more than 146 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.283 state:D stack:28688 pid: 5380 ppid: 4188 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5049 [inline]
__schedule+0x11ef/0x43c0 kernel/sched/core.c:6395
schedule+0x11b/0x1e0 kernel/sched/core.c:6478
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6537
__mutex_lock_common+0xcfc/0x2400 kernel/locking/mutex.c:669
__mutex_lock kernel/locking/mutex.c:729 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline]
synchronize_rcu_expedited+0x3a5/0x750 kernel/rcu/tree_exp.h:845
synchronize_rcu+0x119/0x1e0 kernel/rcu/tree.c:3802
__sched_core_enable kernel/sched/core.c:312 [inline]
sched_core_get+0x82/0x1d0 kernel/sched/core.c:331
sched_core_alloc_cookie+0x71/0xa0 kernel/sched/core_sched.c:21
sched_core_share_pid+0x2d8/0x710 kernel/sched/core_sched.c:178
__do_sys_prctl kernel/sys.c:2564 [inline]
__se_sys_prctl+0x17f/0x1050 kernel/sys.c:2298
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fd2ad34ee59
RSP: 002b:00007fd2ab5a8028 EFLAGS: 00000246
ORIG_RAX: 000000000000009d
RAX: ffffffffffffffda RBX: 00007fd2ad5c7fa0 RCX: 00007fd2ad34ee59
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 000000000000003e
RBP: 00007fd2ad3e4d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd2ad5c8038 R14: 00007fd2ad5c7fa0 R15: 00007ffd42f25fc8
INFO: task syz.3.283:5382 blocked for more than 146 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.283 state:D
stack:25720 pid: 5382 ppid: 4188 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5049 [inline]
__schedule+0x11ef/0x43c0 kernel/sched/core.c:6395
schedule+0x11b/0x1e0 kernel/sched/core.c:6478
exp_funnel_lock kernel/rcu/tree_exp.h:313 [inline]
synchronize_rcu_expedited+0x680/0x750 kernel/rcu/tree_exp.h:845
wg_socket_reinit+0x1b9/0x350 drivers/net/wireguard/socket.c:434
wg_socket_init+0x7e1/0xa40 drivers/net/wireguard/socket.c:412
set_port drivers/net/wireguard/netlink.c:326 [inline]
wg_set_device+0x6dc/0x1f10 drivers/net/wireguard/netlink.c:534
genl_family_rcv_msg_doit net/netlink/genetlink.c:731 [inline]
genl_family_rcv_msg net/netlink/genetlink.c:775 [inline]
genl_rcv_msg+0xcea/0xf90 net/netlink/genetlink.c:792
netlink_rcv_skb+0x1f5/0x440 net/netlink/af_netlink.c:2507
genl_rcv+0x24/0x40 net/netlink/genetlink.c:803
netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x774/0x920 net/netlink/af_netlink.c:1344
netlink_sendmsg+0x8ba/0xbe0 net/netlink/af_netlink.c:1918
sock_sendmsg_nosec net/socket.c:706 [inline]
__sock_sendmsg net/socket.c:718 [inline]
____sys_sendmsg+0x5b7/0x8f0 net/socket.c:2445
___sys_sendmsg+0x236/0x2e0 net/socket.c:2499
__sys_sendmsg net/socket.c:2528 [inline]
__do_sys_sendmsg net/socket.c:2537 [inline]
__se_sys_sendmsg+0x1af/0x290 net/socket.c:2535
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fd2ad34ee59
RSP: 002b:00007fd2ab587028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fd2ad5c8090 RCX: 00007fd2ad34ee59
RDX: 000000000004c020 RSI: 0000200000000d00 RDI: 0000000000000005
RBP: 00007fd2ad3e4d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd2ad5c8128 R14: 00007fd2ad5c8090 R15: 00007ffd42f25fc8
INFO: task syz.3.283:5383 blocked for more than 147 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.283 state:D stack:27856 pid: 5383 ppid: 4188 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5049 [inline]
__schedule+0x11ef/0x43c0 kernel/sched/core.c:6395
schedule+0x11b/0x1e0 kernel/sched/core.c:6478
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6537
__mutex_lock_common+0xcfc/0x2400 kernel/locking/mutex.c:669
__mutex_lock kernel/locking/mutex.c:729 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
ip6_mroute_setsockopt+0xd9a/0x12e0 net/ipv6/ip6mr.c:1674
do_ipv6_setsockopt net/ipv6/ipv6_sockglue.c:414 [inline]
ipv6_setsockopt+0x4c5/0x3cc0 net/ipv6/ipv6_sockglue.c:1009
rawv6_setsockopt+0x29e/0x660 net/ipv6/raw.c:1089
__sys_setsockopt+0x2bf/0x3d0 net/socket.c:2212
__do_sys_setsockopt net/socket.c:2223 [inline]
__se_sys_setsockopt net/socket.c:2220 [inline]
__x64_sys_setsockopt+0xb1/0xc0 net/socket.c:2220
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fd2ad34ee59
RSP: 002b:00007fd2ab566028 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007fd2ad5c8180 RCX: 00007fd2ad34ee59
RDX: 00000000000000ca RSI: 0000000000000029 RDI: 0000000000000006
RBP: 00007fd2ad3e4d6f R08: 000000000000000c R09: 0000000000000000
R10: 0000200000000080 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd2ad5c8218 R14: 00007fd2ad5c8180 R15: 00007ffd42f25fc8
INFO: task syz.0.284:5387 blocked for more than 148 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.284 state:D
stack:26832 pid: 5387 ppid: 4194 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5049 [inline]
__schedule+0x11ef/0x43c0 kernel/sched/core.c:6395
schedule+0x11b/0x1e0 kernel/sched/core.c:6478
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6537
__mutex_lock_common+0xcfc/0x2400 kernel/locking/mutex.c:669
__mutex_lock kernel/locking/mutex.c:729 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
dev_ioctl+0x534/0xe30 net/core/dev_ioctl.c:571
sock_do_ioctl+0x245/0x320 net/socket.c:1161
sock_ioctl+0x4d2/0x710 net/socket.c:1266
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl+0xfa/0x170 fs/ioctl.c:860
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f7479915e59
RSP: 002b:00007f7477b4e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f7479b8f090 RCX: 00007f7479915e59
RDX: 0000200000000040 RSI: 0000000000008914 RDI: 000000000000000a
RBP: 00007f74799abd6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7479b8f128 R14: 00007f7479b8f090 R15: 00007ffe8f0e1c98
INFO: task syz.2.285:5393 blocked for more than 148 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.285 state:D
stack:29072 pid: 5393 ppid: 4202 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5049 [inline]
__schedule+0x11ef/0x43c0 kernel/sched/core.c:6395
schedule+0x11b/0x1e0 kernel/sched/core.c:6478
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6537
__mutex_lock_common+0xcfc/0x2400 kernel/locking/mutex.c:669
__mutex_lock kernel/locking/mutex.c:729 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
sched_core_get+0x49/0x1d0 kernel/sched/core.c:329
sched_core_alloc_cookie+0x71/0xa0 kernel/sched/core_sched.c:21
sched_core_share_pid+0x2d8/0x710 kernel/sched/core_sched.c:178
__do_sys_prctl kernel/sys.c:2564 [inline]
__se_sys_prctl+0x17f/0x1050 kernel/sys.c:2298
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f7f82847e59
RSP: 002b:00007f7f80aa1028 EFLAGS: 00000246
ORIG_RAX: 000000000000009d
RAX: ffffffffffffffda RBX: 00007f7f82ac0fa0 RCX: 00007f7f82847e59
RDX: 00000000000000ac RSI: 0000000000000001 RDI: 000000000000003e
RBP: 00007f7f828ddd6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7f82ac1038 R14: 00007f7f82ac0fa0 R15: 00007ffc5b959b88
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0:
ffffffff8c31eb20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by kworker/1:2/1107:
#0: ffff888016c70938
(
(wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x761/0x1010 kernel/workqueue.c:-1
#1:
ffffc90004eefd00 (xfrm_state_gc_work){+.+.}-{0:0}, at: process_one_work+0x79f/0x1010 kernel/workqueue.c:2285
2 locks held by kworker/u4:4/3081:
#0:
ffff888016c79138 (
(wq_completion)events_unbound
){+.+.}-{0:0}, at: process_one_work+0x761/0x1010 kernel/workqueue.c:-1
#1:
ffffc9000ced7d00 (
(reaper_work).work
){+.+.}-{0:0}, at: process_one_work+0x79f/0x1010 kernel/workqueue.c:2285
2 locks held by getty/3954:
#0: ffff88814cd13098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc900025e62e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x5df/0x1a70 drivers/tty/n_tty.c:2158
3 locks held by kworker/1:6/4241:
#0:
ffff88802b963138 (
(wq_completion)ipv6_addrconf
){+.+.}-{0:0}, at: process_one_work+0x761/0x1010 kernel/workqueue.c:-1
#1: ffffc9000322fd00
((addr_chk_work).work){+.+.}-{0:0}, at: process_one_work+0x79f/0x1010 kernel/workqueue.c:2285
#2: ffffffff8d43d3c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4654
2 locks held by kworker/u4:15/4535:
#0: ffff888016c79138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x761/0x1010 kernel/workqueue.c:-1
#1: ffffc9000348fd00 (connector_reaper_work){+.+.}-{0:0}, at: process_one_work+0x79f/0x1010 kernel/workqueue.c:2285
9 locks held by kworker/0:11/4553:
4 locks held by udevd/5110:
#0: ffff888024f1f540 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xad/0xd50 fs/seq_file.c:182
#1: ffff88806075a088 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x51/0x3c0 fs/kernfs/file.c:112
#2:
ffff88802018eae8 (kn->active#32){++++}-{0:0}, at: kernfs_seq_start+0x71/0x3c0 fs/kernfs/file.c:113
#3: ffff88807960d220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:764 [inline]
#3: ffff88807960d220 (&dev->mutex){....}-{3:3}, at: uevent_show+0x17a/0x330 drivers/base/core.c:2408
2 locks held by syz.1.279/5356:
#0: ffff888063b53810
(
&sb->s_type->i_mutex_key
#11
){+.+.}-{3:3}
, at: inode_lock include/linux/fs.h:787 [inline]
, at: __sock_release net/socket.c:650 [inline]
, at: sock_close+0x90/0x240 net/socket.c:1345
#1:
ffffffff8c3235a8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline]
ffffffff8c3235a8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x2d1/0x750 kernel/rcu/tree_exp.h:845
2 locks held by syz.3.283/5380:
#0:
ffffffff8c1e0148 (
sched_core_mutex
){+.+.}-{3:3}, at: sched_core_get+0x49/0x1d0 kernel/sched/core.c:329
#1:
ffffffff8c3235a8 (
rcu_state.exp_mutex
){+.+.}-{3:3}
, at: exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline]
, at: synchronize_rcu_expedited+0x3a5/0x750 kernel/rcu/tree_exp.h:845
4 locks held by syz.3.283/5382:
#0: ffffffff8d499df0 (cb_lock
){++++}-{3:3}, at: genl_rcv+0x15/0x40 net/netlink/genetlink.c:802
#1:
ffffffff8d499c48
(
genl_mutex
){+.+.}-{3:3}
, at: genl_lock net/netlink/genetlink.c:33 [inline]
, at: genl_rcv_msg+0x161/0xf90 net/netlink/genetlink.c:790
#2:
ffffffff8d43d3c8
(
rtnl_mutex
){+.+.}-{3:3}, at: wg_set_device+0xf4/0x1f10 drivers/net/wireguard/netlink.c:504
#3:
ffff888062a213e8
(&wg->device_update_lock){+.+.}-{3:3}, at: wg_set_device+0x10c/0x1f10 drivers/net/wireguard/netlink.c:505
1 lock held by syz.3.283/5383:
#0:
ffffffff8d43d3c8 (
rtnl_mutex
){+.+.}-{3:3}, at: ip6_mroute_setsockopt+0xd9a/0x12e0 net/ipv6/ip6mr.c:1674
2 locks held by syz.0.284/5386:
#0: ffff888074f93810
(
&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline]
&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: __sock_release net/socket.c:650 [inline]
&sb->s_type->i_mutex_key#11){+.+.}-{3:3}, at: sock_close+0x90/0x240 net/socket.c:1345
#1:
ffff88805c6ff120 (
sk_lock-AF_CAN
){+.+.}-{0:0}
, at: lock_sock include/net/sock.h:1744 [inline]
, at: bcm_release+0x1c9/0x850 net/can/bcm.c:1558
1 lock held by syz.0.284/5387:
#0: ffffffff8d43d3c8 (rtnl_mutex){+.+.}-{3:3}, at: dev_ioctl+0x534/0xe30 net/core/dev_ioctl.c:571
1 lock held by syz.2.285/5393:
#0: ffffffff8c1e0148 (sched_core_mutex){+.+.}-{3:3}, at: sched_core_get+0x49/0x1d0 kernel/sched/core.c:329
1 lock held by syz.2.285/5394:
#0: ffffffff8c1e0148 (sched_core_mutex){+.+.}-{3:3}, at: sched_core_get+0x49/0x1d0 kernel/sched/core.c:329
1 lock held by syz-executor/5398:
#0: ffffffff8d43d3c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
#0: ffffffff8d43d3c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x7ee/0xf30 net/core/rtnetlink.c:5684
1 lock held by syz-executor/5404:
#0: ffffffff8d43d3c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
#0: ffffffff8d43d3c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x7ee/0xf30 net/core/rtnetlink.c:5684
1 lock held by syz-executor/5406:
#0: ffffffff8d43d3c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
#0: ffffffff8d43d3c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x7ee/0xf30 net/core/rtnetlink.c:5684
1 lock held by syz-executor/5408:
#0:
ffffffff8d43d3c8
(
rtnl_mutex
){+.+.}-{3:3}
, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
, at: rtnetlink_rcv_msg+0x7ee/0xf30 net/core/rtnetlink.c:5684
1 lock held by syz-executor/5410:
#0:
ffffffff8d43d3c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
ffffffff8d43d3c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x7ee/0xf30 net/core/rtnetlink.c:5684
1 lock held by dhcpcd/5412:
#0:
ffff88805ac62120
(sk_lock-AF_PACKET
){+.+.}-{0:0}
, at: lock_sock include/net/sock.h:1744 [inline]
, at: packet_do_bind+0x35/0xda0 net/packet/af_packet.c:3213
1 lock held by dhcpcd/5413:
#0:
ffff8880260e0120
(sk_lock-AF_PACKET
){+.+.}-{0:0}
, at: lock_sock include/net/sock.h:1744 [inline]
, at: packet_do_bind+0x35/0xda0 net/packet/af_packet.c:3213
1 lock held by dhcpcd/5414:
#0:
ffff8880569c6120
(sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1744 [inline]
(sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x35/0xda0 net/packet/af_packet.c:3213
1 lock held by dhcpcd/5415:
#0:
ffff8880569c2120
(sk_lock-AF_PACKET
){+.+.}-{0:0}
, at: lock_sock include/net/sock.h:1744 [inline]
, at: packet_do_bind+0x35/0xda0 net/packet/af_packet.c:3213
1 lock held by syz-executor/5417:
#0:
ffffffff8d43d3c8
(rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
(rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x7ee/0xf30 net/core/rtnetlink.c:5684
1 lock held by syz-executor/5423:
#0:
ffffffff8d43d3c8
(
rtnl_mutex
){+.+.}-{3:3}
, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
, at: rtnetlink_rcv_msg+0x7ee/0xf30 net/core/rtnetlink.c:5684
1 lock held by syz-executor/5425:
#0:
ffffffff8d43d3c8
(
rtnl_mutex
){+.+.}-{3:3}
, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
, at: rtnetlink_rcv_msg+0x7ee/0xf30 net/core/rtnetlink.c:5684
1 lock held by syz-executor/5427:
#0:
ffffffff8d43d3c8
(
rtnl_mutex
){+.+.}-{3:3}
, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
, at: rtnetlink_rcv_msg+0x7ee/0xf30 net/core/rtnetlink.c:5684
1 lock held by syz-executor/5428:
#0:
ffffffff8d43d3c8
(
rtnl_mutex
){+.+.}-{3:3}
, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
, at: rtnetlink_rcv_msg+0x7ee/0xf30 net/core/rtnetlink.c:5684
1 lock held by syz-executor/5432:
#0: ffffffff8d43d3c8
(
rtnl_mutex
){+.+.}-{3:3}
, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
, at: rtnetlink_rcv_msg+0x7ee/0xf30 net/core/rtnetlink.c:5684
1 lock held by syz-executor/5438:
#0:
ffffffff8d43d3c8
(rtnl_mutex){+.+.}-{3:3}
, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
, at: rtnetlink_rcv_msg+0x7ee/0xf30 net/core/rtnetlink.c:5684
1 lock held by syz-executor/5440:
#0:
ffffffff8d43d3c8
(
rtnl_mutex
){+.+.}-{3:3}
, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
, at: rtnetlink_rcv_msg+0x7ee/0xf30 net/core/rtnetlink.c:5684
1 lock held by syz-executor/5442:
#0: ffffffff8d43d3c8
(
rtnl_mutex
){+.+.}-{3:3}
, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
, at: rtnetlink_rcv_msg+0x7ee/0xf30 net/core/rtnetlink.c:5684
1 lock held by syz-executor/5443:
#0:
ffffffff8d43d3c8
(rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
(rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x7ee/0xf30 net/core/rtnetlink.c:5684
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106
nmi_cpu_backtrace+0x3a2/0x3d0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x163/0x280 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
watchdog+0xe0f/0xe50 kernel/hung_task.c:369
kthread+0x436/0x520 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4553 Comm: kworker/0:11 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Workqueue: usb_hub_wq hub_event
RIP: 0010:io_serial_out+0x78/0xb0 drivers/tty/serial/8250/8250_port.c:468
Code: 6e 29 fd 44 89 f9 d3 e5 49 83 c6 40 4c 89 f0 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 80 8d 6e fd 41 03 2e 89 d8 89 ea ee <5b> 41 5c 41 5e 41 5f 5d c3 44 89 f9 80 e1 07 38 c1 7c aa 4c 89 ff
RSP: 0018:ffffc9000301e068 EFLAGS: 00000002
RAX: 000000000000005b RBX: 000000000000005b RCX: 0000000000000000
RDX: 00000000000003f8 RSI: 00000000000fffff RDI: 0000000000100000
RBP: 00000000000003f8 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000603bf8 R12: dffffc0000000000
R13: 1ffffffff2c63d30 R14: ffffffff96602880 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f97aa0952fc CR3: 000000007e0dc000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
uart_console_write+0xaa/0x100 drivers/tty/serial/serial_core.c:1981
serial8250_console_write+0xc46/0x1000 drivers/tty/serial/8250/8250_port.c:3392
call_console_drivers kernel/printk/printk.c:-1 [inline]
console_unlock+0xb9a/0x1120 kernel/printk/printk.c:2744
vprintk_emit+0xc0/0x150 kernel/printk/printk.c:2274
dev_vprintk_emit+0x2e1/0x380 drivers/base/core.c:4638
dev_printk_emit+0xeb/0x140 drivers/base/core.c:4649
_dev_err+0x11b/0x170 drivers/base/core.c:4704
parse_uac2_sample_rate_range+0x992/0xc60 sound/usb/format.c:401
parse_audio_format_rates_v2v3+0x329/0x16c0 sound/usb/format.c:620
parse_audio_format_ii sound/usb/format.c:778 [inline]
snd_usb_parse_audio_format+0x4ae/0x740 sound/usb/format.c:799
snd_usb_get_audioformat_uac12 sound/usb/stream.c:854 [inline]
__snd_usb_parse_audio_interface+0x18b1/0x4b00 sound/usb/stream.c:1196
snd_usb_parse_audio_interface+0x36/0xb0 sound/usb/stream.c:1274
create_standard_audio_quirk+0x59/0x120 sound/usb/quirks.c:100
snd_usb_create_quirk sound/usb/quirks.c:577 [inline]
create_composite_quirk+0x1ec/0x4e0 sound/usb/quirks.c:48
usb_audio_probe+0xb97/0x1d90 sound/usb/card.c:885
usb_probe_interface+0x5c5/0xb20 drivers/usb/core/driver.c:396
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x284/0xc80 drivers/base/dd.c:595
__driver_probe_device+0x18c/0x330 drivers/base/dd.c:755
driver_probe_device+0x4f/0x420 drivers/base/dd.c:785
__device_attach_driver+0x2b0/0x500 drivers/base/dd.c:907
bus_for_each_drv+0x184/0x210 drivers/base/bus.c:429
__device_attach+0x2a8/0x480 drivers/base/dd.c:979
bus_probe_device+0xbc/0x1e0 drivers/base/bus.c:489
device_add+0xa00/0xfb0 drivers/base/core.c:3412
usb_set_configuration+0x1991/0x1fd0 drivers/usb/core/message.c:2223
usb_generic_driver_probe+0x89/0x150 drivers/usb/core/generic.c:238
usb_probe_device+0x139/0x270 drivers/usb/core/driver.c:293
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x284/0xc80 drivers/base/dd.c:595
__driver_probe_device+0x18c/0x330 drivers/base/dd.c:755
driver_probe_device+0x4f/0x420 drivers/base/dd.c:785
__device_attach_driver+0x2b0/0x500 drivers/base/dd.c:907
bus_for_each_drv+0x184/0x210 drivers/base/bus.c:429
__device_attach+0x2a8/0x480 drivers/base/dd.c:979
bus_probe_device+0xbc/0x1e0 drivers/base/bus.c:489
device_add+0xa00/0xfb0 drivers/base/core.c:3412
usb_new_device+0xd65/0x1660 drivers/usb/core/hub.c:2632
hub_port_connect drivers/usb/core/hub.c:5497 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5637 [inline]
port_event drivers/usb/core/hub.c:5799 [inline]
hub_event+0x2e4a/0x55e0 drivers/usb/core/hub.c:5881
process_one_work+0x85f/0x1010 kernel/workqueue.c:2310
worker_thread+0xaa6/0x1290 kernel/workqueue.c:2457
kthread+0x436/0x520 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287