rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P2502/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=107505, q=103 ncpus=2)
task:kworker/u8:6 state:R running task stack:19280 pid:2502 tgid:2502 ppid:2 flags:0x00004000
Workqueue: bat_events batadv_nc_worker
Call Trace:
context_switch kernel/sched/core.c:5239 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6603
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6925
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0010:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5826
Code: 2b 00 74 08 4c 89 f7 e8 4a 9f 8b 00 f6 44 24 61 02 0f 85 85 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc900092179e0 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92001242f48 RCX: 1ad99545873eca00
RDX: dffffc0000000000 RSI: ffffffff8c0ae6e0 RDI: ffffffff8c607c40
RBP: ffffc90009217b40 R08: ffffffff93737807 R09: 1ffffffff26e6f00
R10: dffffc0000000000 R11: fffffbfff26e6f01 R12: 1ffff92001242f44
R13: dffffc0000000000 R14: ffffc90009217a40 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
rcu_read_lock include/linux/rcupdate.h:838 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0xec/0x610 net/batman-adv/network-coding.c:719
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: rcu_preempt kthread starved for 10527 jiffies! g107505 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R running task stack:25584 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5239 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6603
__schedule_loop kernel/sched/core.c:6680 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6695
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2034
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2236
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:106 [inline]
NMI backtrace for cpu 1 skipped: idling at acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:111
DEBUG: waiting rtnl_mutex for 10722 jiffies.
task:syz.0.2253 state:D stack:25696 pid:16253 tgid:16251 ppid:12672 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5239 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6603
__schedule_loop kernel/sched/core.c:6680 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6695
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
rtnl_lock net/core/rtnetlink.c:149 [inline]
rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731
netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550
netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357
netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x221/0x270 net/socket.c:745
____sys_sendmsg+0x525/0x7d0 net/socket.c:2597
___sys_sendmsg net/socket.c:2651 [inline]
__sys_sendmsg+0x2b0/0x3a0 net/socket.c:2680
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: 0033:0x7ff322b773b9
RSP: 002b:00007ff32386d048 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007ff322d06058 RCX: 00007ff322b773b9
RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000007
RBP: 00007ff322be48e6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007ff322d06058 R15: 00007fffa35d88c8
DEBUG: holding rtnl_mutex for 10958 jiffies.
task:syz.2.2239 state:R running task stack:25288 pid:16200 tgid:16199 ppid:12528 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5239 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6603
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6925
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:synchronize_rcu+0x0/0x360 kernel/rcu/tree.c:4010
Code: e1 07 80 c1 03 38 c1 0f 8c 97 fe ff ff 4c 89 f7 e8 65 38 81 00 e9 8a fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48
RSP: 0018:ffffc900131a7418 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff92002634e8c RCX: ffffffff94f2f903
RDX: 0000000000000001 RSI: ffffffff8c0ae240 RDI: ffffffff8c607c40
RBP: ffffc900131a74f8 R08: ffffffff94f1d567 R09: 1ffffffff29e3aac
R10: dffffc0000000000 R11: fffffbfff29e3aad R12: ffffffff94f1aeb8
R13: 1ffff92002634e88 R14: 0000000000000202 R15: ffffc900131a7460
lockdep_unregister_key+0x4b7/0x540 kernel/locking/lockdep.c:6548
__qdisc_destroy+0x165/0x410 net/sched/sch_generic.c:1079
netdev_for_each_tx_queue include/linux/netdevice.h:2513 [inline]
dev_shutdown+0x9b/0x450 net/sched/sch_generic.c:1490
unregister_netdevice_many_notify+0x97b/0x1c40 net/core/dev.c:11333
unregister_netdevice_many net/core/dev.c:11405 [inline]
unregister_netdevice_queue+0x303/0x370 net/core/dev.c:11280
unregister_netdevice include/linux/netdevice.h:3129 [inline]
__tun_detach+0x6b9/0x1600 drivers/net/tun.c:685
tun_detach drivers/net/tun.c:701 [inline]
tun_chr_close+0x108/0x1b0 drivers/net/tun.c:3510
__fput+0x24a/0x8a0 fs/file_table.c:422
task_work_run+0x24f/0x310 kernel/task_work.c:222
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0xa2f/0x27f0 kernel/exit.c:882
do_group_exit+0x207/0x2c0 kernel/exit.c:1031
get_signal+0x16a1/0x1740 kernel/signal.c:2917
arch_do_signal_or_restart+0x96/0x830 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f011e7773b9
RSP: 002b:00007f011f4bc048 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: fffffffffffffffc RBX: 00007f011e905f80 RCX: 00007f011e7773b9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000068060200
RBP: 00007f011e7e48e6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f011e905f80 R15: 00007ffc990ade28
DEBUG: waiting rtnl_mutex for 10952 jiffies.
task:syz.1.2249 state:D stack:26328 pid:16240 tgid:16239 ppid:12527 flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:5239 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6603
__schedule_loop kernel/sched/core.c:6680 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6695
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
do_ipv6_setsockopt+0x9e4/0x3630 net/ipv6/ipv6_sockglue.c:566
ipv6_setsockopt+0x5c/0x1a0 net/ipv6/ipv6_sockglue.c:993
do_sock_setsockopt+0x3af/0x720 net/socket.c:2324
__sys_setsockopt+0x1ae/0x250 net/socket.c:2347
__do_sys_setsockopt net/socket.c:2356 [inline]
__se_sys_setsockopt net/socket.c:2353 [inline]
__x64_sys_setsockopt+0xb5/0xd0 net/socket.c:2353
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: 0033:0x7ff0f93773b9
RSP: 002b:00007ff0fa208048 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007ff0f9505f80 RCX: 00007ff0f93773b9
RDX: 000000000000002a RSI: 0000000000000029 RDI: 0000000000000003
RBP: 00007ff0f93e48e6 R08: 0000000000000088 R09: 0000000000000000
R10: 00000000200000c0 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007ff0f9505f80 R15: 00007ffc926c7ff8
Showing all locks held in the system:
6 locks held by kworker/0:0/8:
6 locks held by kworker/0:1/9:
2 locks held by kworker/u8:0/11:
3 locks held by kworker/u8:6/2502:
3 locks held by kworker/u8:10/3015:
2 locks held by getty/4979:
#0: ffff88802b2630a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2211
2 locks held by kworker/0:6/5275:
1 lock held by syz.2.2239/16200:
1 lock held by syz.1.2249/16240:
#0: ffffffff8fc81d48 (rtnl_mutex){+.+.}-{3:3}, at: do_ipv6_setsockopt+0x9e4/0x3630 net/ipv6/ipv6_sockglue.c:566
2 locks held by syz.3.2252/16250:
1 lock held by syz.0.2253/16252:
1 lock held by syz.0.2253/16253:
#0: ffffffff8fc81d48 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:149 [inline]
#0: ffffffff8fc81d48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731
=============================================
DEBUG: waiting rtnl_mutex for 10938 jiffies.
task:syz.0.2253 state:D stack:25696 pid:16253 tgid:16251 ppid:12672 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5239 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6603
__schedule_loop kernel/sched/core.c:6680 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6695
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
rtnl_lock net/core/rtnetlink.c:149 [inline]
rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731
netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550
netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357
netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x221/0x270 net/socket.c:745
____sys_sendmsg+0x525/0x7d0 net/socket.c:2597
___sys_sendmsg net/socket.c:2651 [inline]
__sys_sendmsg+0x2b0/0x3a0 net/socket.c:2680
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: 0033:0x7ff322b773b9
RSP: 002b:00007ff32386d048 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007ff322d06058 RCX: 00007ff322b773b9
RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000007
RBP: 00007ff322be48e6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007ff322d06058 R15: 00007fffa35d88c8
DEBUG: holding rtnl_mutex for 11174 jiffies.
task:syz.2.2239 state:R running task stack:25288 pid:16200 tgid:16199 ppid:12528 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5239 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6603
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6925
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:synchronize_rcu+0x0/0x360 kernel/rcu/tree.c:4010
Code: e1 07 80 c1 03 38 c1 0f 8c 97 fe ff ff 4c 89 f7 e8 65 38 81 00 e9 8a fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48
RSP: 0018:ffffc900131a7418 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff92002634e8c RCX: ffffffff94f2f903
RDX: 0000000000000001 RSI: ffffffff8c0ae240 RDI: ffffffff8c607c40
RBP: ffffc900131a74f8 R08: ffffffff94f1d567 R09: 1ffffffff29e3aac
R10: dffffc0000000000 R11: fffffbfff29e3aad R12: ffffffff94f1aeb8
R13: 1ffff92002634e88 R14: 0000000000000202 R15: ffffc900131a7460
lockdep_unregister_key+0x4b7/0x540 kernel/locking/lockdep.c:6548
__qdisc_destroy+0x165/0x410 net/sched/sch_generic.c:1079
netdev_for_each_tx_queue include/linux/netdevice.h:2513 [inline]
dev_shutdown+0x9b/0x450 net/sched/sch_generic.c:1490
unregister_netdevice_many_notify+0x97b/0x1c40 net/core/dev.c:11333
unregister_netdevice_many net/core/dev.c:11405 [inline]
unregister_netdevice_queue+0x303/0x370 net/core/dev.c:11280
unregister_netdevice include/linux/netdevice.h:3129 [inline]
__tun_detach+0x6b9/0x1600 drivers/net/tun.c:685
tun_detach drivers/net/tun.c:701 [inline]
tun_chr_close+0x108/0x1b0 drivers/net/tun.c:3510
__fput+0x24a/0x8a0 fs/file_table.c:422
task_work_run+0x24f/0x310 kernel/task_work.c:222
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0xa2f/0x27f0 kernel/exit.c:882
do_group_exit+0x207/0x2c0 kernel/exit.c:1031
get_signal+0x16a1/0x1740 kernel/signal.c:2917
arch_do_signal_or_restart+0x96/0x830 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f011e7773b9
RSP: 002b:00007f011f4bc048 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: fffffffffffffffc RBX: 00007f011e905f80 RCX: 00007f011e7773b9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000068060200
RBP: 00007f011e7e48e6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f011e905f80 R15: 00007ffc990ade28
DEBUG: waiting rtnl_mutex for 11168 jiffies.
task:syz.1.2249 state:D stack:26328 pid:16240 tgid:16239 ppid:12527 flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:5239 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6603
__schedule_loop kernel/sched/core.c:6680 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6695
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
do_ipv6_setsockopt+0x9e4/0x3630 net/ipv6/ipv6_sockglue.c:566
ipv6_setsockopt+0x5c/0x1a0 net/ipv6/ipv6_sockglue.c:993
do_sock_setsockopt+0x3af/0x720 net/socket.c:2324
__sys_setsockopt+0x1ae/0x250 net/socket.c:2347
__do_sys_setsockopt net/socket.c:2356 [inline]
__se_sys_setsockopt net/socket.c:2353 [inline]
__x64_sys_setsockopt+0xb5/0xd0 net/socket.c:2353
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: 0033:0x7ff0f93773b9
RSP: 002b:00007ff0fa208048 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007ff0f9505f80 RCX: 00007ff0f93773b9
RDX: 000000000000002a RSI: 0000000000000029 RDI: 0000000000000003
RBP: 00007ff0f93e48e6 R08: 0000000000000088 R09: 0000000000000000
R10: 00000000200000c0 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007ff0f9505f80 R15: 00007ffc926c7ff8
Showing all locks held in the system:
6 locks held by kworker/0:0/8:
6 locks held by kworker/0:1/9:
2 locks held by kworker/u8:0/11:
3 locks held by kworker/u8:6/2502:
3 locks held by kworker/u8:10/3015:
2 locks held by getty/4979:
#0: ffff88802b2630a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2211
2 locks held by kworker/0:6/5275:
1 lock held by syz.2.2239/16200:
1 lock held by syz.1.2249/16240:
#0: ffffffff8fc81d48 (rtnl_mutex){+.+.}-{3:3}, at: do_ipv6_setsockopt+0x9e4/0x3630 net/ipv6/ipv6_sockglue.c:566
2 locks held by syz.3.2252/16250:
1 lock held by syz.0.2253/16252:
1 lock held by syz.0.2253/16253:
#0: ffffffff8fc81d48 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:149 [inline]
#0: ffffffff8fc81d48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731
=============================================
DEBUG: waiting rtnl_mutex for 11154 jiffies.
task:syz.0.2253 state:D stack:25696 pid:16253 tgid:16251 ppid:12672 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5239 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6603
__schedule_loop kernel/sched/core.c:6680 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6695
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
rtnl_lock net/core/rtnetlink.c:149 [inline]
rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731
netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550
netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357
netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x221/0x270 net/socket.c:745
____sys_sendmsg+0x525/0x7d0 net/socket.c:2597
___sys_sendmsg net/socket.c:2651 [inline]
__sys_sendmsg+0x2b0/0x3a0 net/socket.c:2680
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: 0033:0x7ff322b773b9
RSP: 002b:00007ff32386d048 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007ff322d06058 RCX: 00007ff322b773b9
RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000007
RBP: 00007ff322be48e6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007ff322d06058 R15: 00007fffa35d88c8
DEBUG: holding rtnl_mutex for 11390 jiffies.
task:syz.2.2239 state:R running task stack:25288 pid:16200 tgid:16199 ppid:12528 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5239 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6603
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6925
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:synchronize_rcu+0x0/0x360 kernel/rcu/tree.c:4010
Code: e1 07 80 c1 03 38 c1 0f 8c 97 fe ff ff 4c 89 f7 e8 65 38 81 00 e9 8a fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48
RSP: 0018:ffffc900131a7418 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff92002634e8c RCX: ffffffff94f2f903
RDX: 0000000000000001 RSI: ffffffff8c0ae240 RDI: ffffffff8c607c40
RBP: ffffc900131a74f8 R08: ffffffff94f1d567 R09: 1ffffffff29e3aac
R10: dffffc0000000000 R11: fffffbfff29e3aad R12: ffffffff94f1aeb8
R13: 1ffff92002634e88 R14: 0000000000000202 R15: ffffc900131a7460
lockdep_unregister_key+0x4b7/0x540 kernel/locking/lockdep.c:6548
__qdisc_destroy+0x165/0x410 net/sched/sch_generic.c:1079
netdev_for_each_tx_queue include/linux/netdevice.h:2513 [inline]
dev_shutdown+0x9b/0x450 net/sched/sch_generic.c:1490
unregister_netdevice_many_notify+0x97b/0x1c40 net/core/dev.c:11333
unregister_netdevice_many net/core/dev.c:11405 [inline]
unregister_netdevice_queue+0x303/0x370 net/core/dev.c:11280
unregister_netdevice include/linux/netdevice.h:3129 [inline]
__tun_detach+0x6b9/0x1600 drivers/net/tun.c:685
tun_detach drivers/net/tun.c:701 [inline]
tun_chr_close+0x108/0x1b0 drivers/net/tun.c:3510
__fput+0x24a/0x8a0 fs/file_table.c:422
task_work_run+0x24f/0x310 kernel/task_work.c:222
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0xa2f/0x27f0 kernel/exit.c:882
do_group_exit+0x207/0x2c0 kernel/exit.c:1031
get_signal+0x16a1/0x1740 kernel/signal.c:2917
arch_do_signal_or_restart+0x96/0x830 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f011e7773b9
RSP: 002b:00007f011f4bc048 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: fffffffffffffffc RBX: 00007f011e905f80 RCX: 00007f011e7773b9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000068060200
RBP: 00007f011e7e48e6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f011e905f80 R15: 00007ffc990ade28
DEBUG: waiting rtnl_mutex for 11384 jiffies.
task:syz.1.2249 state:D stack:26328 pid:16240 tgid:16239 ppid:12527 flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:5239 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6603
__schedule_loop kernel/sched/core.c:6680 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6695
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
do_ipv6_setsockopt+0x9e4/0x3630 net/ipv6/ipv6_sockglue.c:566
ipv6_setsockopt+0x5c/0x1a0 net/ipv6/ipv6_sockglue.c:993
do_sock_setsockopt+0x3af/0x720 net/socket.c:2324
__sys_setsockopt+0x1ae/0x250 net/socket.c:2347
__do_sys_setsockopt net/socket.c:2356 [inline]
__se_sys_setsockopt net/socket.c:2353 [inline]
__x64_sys_setsockopt+0xb5/0xd0 net/socket.c:2353
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: 0033:0x7ff0f93773b9
RSP: 002b:00007ff0fa208048 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007ff0f9505f80 RCX: 00007ff0f93773b9
RDX: 000000000000002a RSI: 0000000000000029 RDI: 0000000000000003
RBP: 00007ff0f93e48e6 R08: 0000000000000088 R09: 0000000000000000
R10: 00000000200000c0 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007ff0f9505f80 R15: 00007ffc926c7ff8
Showing all locks held in the system:
6 locks held by kworker/0:0/8:
6 locks held by kworker/0:1/9:
2 locks held by kworker/u8:0/11:
3 locks held by kworker/u8:6/2502:
3 locks held by kworker/u8:10/3015:
2 locks held by getty/4979:
#0: ffff88802b2630a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2211
2 locks held by kworker/0:6/5275:
1 lock held by syz.2.2239/16200:
1 lock held by syz.1.2249/16240:
#0: ffffffff8fc81d48 (rtnl_mutex){+.+.}-{3:3}, at: do_ipv6_setsockopt+0x9e4/0x3630 net/ipv6/ipv6_sockglue.c:566
2 locks held by syz.3.2252/16250:
1 lock held by syz.0.2253/16252:
1 lock held by syz.0.2253/16253:
#0: ffffffff8fc81d48 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:149 [inline]
#0: ffffffff8fc81d48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731
=============================================
DEBUG: waiting rtnl_mutex for 11370 jiffies.
task:syz.0.2253 state:D stack:25696 pid:16253 tgid:16251 ppid:12672 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5239 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6603
__schedule_loop kernel/sched/core.c:6680 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6695
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
rtnl_lock net/core/rtnetlink.c:149 [inline]
rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731
netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550
netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357
netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x221/0x270 net/socket.c:745
____sys_sendmsg+0x525/0x7d0 net/socket.c:2597
___sys_sendmsg net/socket.c:2651 [inline]
__sys_sendmsg+0x2b0/0x3a0 net/socket.c:2680
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: 0033:0x7ff322b773b9
RSP: 002b:00007ff32386d048 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007ff322d06058 RCX: 00007ff322b773b9
RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000007
RBP: 00007ff322be48e6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007ff322d06058 R15: 00007fffa35d88c8
DEBUG: holding rtnl_mutex for 11606 jiffies.
task:syz.2.2239 state:R running task stack:25288 pid:16200 tgid:16199 ppid:12528 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5239 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6603
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6925
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:synchronize_rcu+0x0/0x360 kernel/rcu/tree.c:4010
Code: e1 07 80 c1 03 38 c1 0f 8c 97 fe ff ff 4c 89 f7 e8 65 38 81 00 e9 8a fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48
RSP: 0018:ffffc900131a7418 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff92002634e8c RCX: ffffffff94f2f903
RDX: 0000000000000001 RSI: ffffffff8c0ae240 RDI: ffffffff8c607c40
RBP: ffffc900131a74f8 R08: ffffffff94f1d567 R09: 1ffffffff29e3aac
R10: dffffc0000000000 R11: fffffbfff29e3aad R12: ffffffff94f1aeb8
R13: 1ffff92002634e88 R14: 0000000000000202 R15: ffffc900131a7460
lockdep_unregister_key+0x4b7/0x540 kernel/locking/lockdep.c:6548
__qdisc_destroy+0x165/0x410 net/sched/sch_generic.c:1079
netdev_for_each_tx_queue include/linux/netdevice.h:2513 [inline]
dev_shutdown+0x9b/0x450 net/sched/sch_generic.c:1490
unregister_netdevice_many_notify+0x97b/0x1c40 net/core/dev.c:11333
unregister_netdevice_many net/core/dev.c:11405 [inline]
unregister_netdevice_queue+0x303/0x370 net/core/dev.c:11280
unregister_netdevice include/linux/netdevice.h:3129 [inline]
__tun_detach+0x6b9/0x1600 drivers/net/tun.c:685
tun_detach drivers/net/tun.c:701 [inline]
tun_chr_close+0x108/0x1b0 drivers/net/tun.c:3510
__fput+0x24a/0x8a0 fs/file_table.c:422
task_work_run+0x24f/0x310 kernel/task_work.c:222
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0xa2f/0x27f0 kernel/exit.c:882
do_group_exit+0x207/0x2c0 kernel/exit.c:1031
get_signal+0x16a1/0x1740 kernel/signal.c:2917
arch_do_signal_or_restart+0x96/0x830 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f011e7773b9
RSP: 002b:00007f011f4bc048 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: fffffffffffffffc RBX: 00007f011e905f80 RCX: 00007f011e7773b9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000068060200
RBP: 00007f011e7e48e6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f011e905f80 R15: 00007ffc990ade28
DEBUG: waiting rtnl_mutex for 11599 jiffies.
task:syz.1.2249 state:D stack:26328 pid:16240 tgid:16239 ppid:12527 flags:0x00000000
Call Trace:
context_switch kernel/sched/core.c:5239 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6603
__schedule_loop kernel/sched/core.c:6680 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6695
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
do_ipv6_setsockopt+0x9e4/0x3630 net/ipv6/ipv6_sockglue.c:566
ipv6_setsockopt+0x5c/0x1a0 net/ipv6/ipv6_sockglue.c:993
do_sock_setsockopt+0x3af/0x720 net/socket.c:2324
__sys_setsockopt+0x1ae/0x250 net/socket.c:2347
__do_sys_setsockopt net/socket.c:2356 [inline]
__se_sys_setsockopt net/socket.c:2353 [inline]
__x64_sys_setsockopt+0xb5/0xd0 net/socket.c:2353
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: 0033:0x7ff0f93773b9
RSP: 002b:00007ff0fa208048 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007ff0f9505f80 RCX: 00007ff0f93773b9
RDX: 000000000000002a RSI: 0000000000000029 RDI: 0000000000000003
RBP: 00007ff0f93e48e6 R08: 0000000000000088 R09: 0000000000000000
R10: 00000000200000c0 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007ff0f9505f80 R15: 00007ffc926c7ff8
Showing all locks held in the system:
6 locks held by kworker/0:0/8:
6 locks held by kworker/0:1/9:
2 locks held by kworker/u8:0/11:
3 locks held by kworker/u8:6/2502:
3 locks held by kworker/u8:10/3015:
2 locks held by getty/4979:
#0: ffff88802b2630a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2211
2 locks held by kworker/0:6/5275:
1 lock held by syz.2.2239/16200:
1 lock held by syz.1.2249/16240:
#0: ffffffff8fc81d48 (rtnl_mutex){+.+.}-{3:3}, at: do_ipv6_setsockopt+0x9e4/0x3630 net/ipv6/ipv6_sockglue.c:566
2 locks held by syz.3.2252/16250:
1 lock held by syz.0.2253/16252:
1 lock held by syz.0.2253/16253:
#0: ffffffff8fc81d48 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:149 [inline]
#0: ffffffff8fc81d48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731
=============================================
DEBUG: waiting rtnl_mutex for 11586 jiffies.
task:syz.0.2253 state:D stack:25696 pid:16253 tgid:16251 ppid:12672 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5239 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6603
__schedule_loop kernel/sched/core.c:6680 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6695
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
rtnl_lock net/core/rtnetlink.c:149 [inline]
rtnetlink_rcv_msg+0x6eb/0xd00 net/core/rtnetlink.c:6731
netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2550
netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357
netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg+0x221/0x270 net/socket.c:745
____sys_sendmsg+0x525/0x7d0 net/socket.c:2597
___sys_sendmsg net/socket.c:2651 [inline]
__sys_sendmsg+0x2b0/0x3a0 net/socket.c:2680
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: 0033:0x7ff322b773b9
RSP: 002b:00007ff32386d048 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007ff322d06058 RCX: 00007ff322b773b9
RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000007
RBP: 00007ff322be48e6 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007ff322d06058 R15: 00007fffa35d88c8
DEBUG: holding rtnl_mutex for 11822 jiffies.
task:syz.2.2239 state:R running task stack:25288 pid:16200 tgid:16199 ppid:12528 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5239 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6603
preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6925
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:synchronize_rcu+0x0/0x360 kernel/rcu/tree.c:4010
Code: e1 07 80 c1 03 38 c1 0f 8c 97 fe ff ff 4c 89 f7 e8 65 38 81 00 e9 8a fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48
RSP: 0018:ffffc900131a7418 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff92002634e8c RCX: ffffffff94f2f903
RDX: 0000000000000001 RSI: ffffffff8c0ae240 RDI: ffffffff8c607c40
RBP: ffffc900131a74f8 R08: ffffffff94f1d567 R09: 1ffffffff29e3aac
R10: dffffc0000000000 R11: fffffbfff29e3aad R12: ffffffff94f1aeb8
R13: 1ffff92002634e88 R14: 0000000000000202 R15: ffffc900131a7460
lockdep_unregister_key+0x4b7/0x540 kernel/locking/lockdep.c:6548
__qdisc_destroy+0x165/0x410 net/sched/sch_generic.c:1079
netdev_for_each_tx_queue include/linux/netdevice.h:2513 [inline]
dev_shutdown+0x9b/0x450 net/sched/sch_generic.c:1490
unregister_netdevice_many_notify+0x97b/0x1c40 net/core/dev.c:11333
unregister_netdevice_many net/core/dev.c:11405 [inline]
unregister_netdevice_queue+0x303/0x370 net/core/dev.c:11280
unregister_netdevice include/linux/netdevice.h:3129 [inline]
__tun_detach+0x6b9/0x1600 drivers/net/tun.c:685