INFO: task syz.1.18:4489 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.18 state:D stack:27504 pid:4489 ppid:4414 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5246 [inline]
__schedule+0x107f/0x4030 kernel/sched/core.c:6563
schedule+0xb9/0x180 kernel/sched/core.c:6639
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6698
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x548/0xae0 kernel/locking/mutex.c:747
trace_array_get kernel/trace/trace.c:461 [inline]
tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4892
do_dentry_open+0x7dd/0x10b0 fs/open.c:882
do_open fs/namei.c:3634 [inline]
path_openat+0x2674/0x2f10 fs/namei.c:3791
do_filp_open+0x1ee/0x420 fs/namei.c:3818
do_sys_openat2+0x14b/0x4f0 fs/open.c:1320
do_sys_open fs/open.c:1336 [inline]
__do_sys_openat fs/open.c:1352 [inline]
__se_sys_openat fs/open.c:1347 [inline]
__x64_sys_openat+0x135/0x160 fs/open.c:1347
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f661fb9e0d9
RSP: 002b:00007f66209df028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f661fe25fa0 RCX: 00007f661fb9e0d9
RDX: 0000000000000001 RSI: 0000200000000140 RDI: ffffffffffffff9c
RBP: 00007f661fc35024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f661fe26038 R14: 00007f661fe25fa0 R15: 00007ffdd47da938
INFO: task syz.0.17:4497 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.17 state:D stack:26880 pid:4497 ppid:4413 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5246 [inline]
__schedule+0x107f/0x4030 kernel/sched/core.c:6563
schedule+0xb9/0x180 kernel/sched/core.c:6639
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6698
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x548/0xae0 kernel/locking/mutex.c:747
trace_array_get kernel/trace/trace.c:461 [inline]
tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4892
do_dentry_open+0x7dd/0x10b0 fs/open.c:882
do_open fs/namei.c:3634 [inline]
path_openat+0x2674/0x2f10 fs/namei.c:3791
do_filp_open+0x1ee/0x420 fs/namei.c:3818
do_sys_openat2+0x14b/0x4f0 fs/open.c:1320
do_sys_open fs/open.c:1336 [inline]
__do_sys_openat fs/open.c:1352 [inline]
__se_sys_openat fs/open.c:1347 [inline]
__x64_sys_openat+0x135/0x160 fs/open.c:1347
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f21f8f9e0d9
RSP: 002b:00007f21f9f5a028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f21f9225fa0 RCX: 00007f21f8f9e0d9
RDX: 0000000000000001 RSI: 0000200000000140 RDI: ffffffffffffff9c
RBP: 00007f21f9035024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f21f9226038 R14: 00007f21f9225fa0 R15: 00007ffd431f0168
INFO: task syz.3.20:4517 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.20 state:D stack:27504 pid:4517 ppid:4427 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5246 [inline]
__schedule+0x107f/0x4030 kernel/sched/core.c:6563
schedule+0xb9/0x180 kernel/sched/core.c:6639
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6698
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x548/0xae0 kernel/locking/mutex.c:747
trace_array_get kernel/trace/trace.c:461 [inline]
tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4892
do_dentry_open+0x7dd/0x10b0 fs/open.c:882
do_open fs/namei.c:3634 [inline]
path_openat+0x2674/0x2f10 fs/namei.c:3791
do_filp_open+0x1ee/0x420 fs/namei.c:3818
do_sys_openat2+0x14b/0x4f0 fs/open.c:1320
do_sys_open fs/open.c:1336 [inline]
__do_sys_openat fs/open.c:1352 [inline]
__se_sys_openat fs/open.c:1347 [inline]
__x64_sys_openat+0x135/0x160 fs/open.c:1347
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f27e1d9e0d9
RSP: 002b:00007f27e2d35028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f27e2025fa0 RCX: 00007f27e1d9e0d9
RDX: 0000000000000001 RSI: 0000200000000140 RDI: ffffffffffffff9c
RBP: 00007f27e1e35024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f27e2026038 R14: 00007f27e2025fa0 R15: 00007fff0b3a3498
INFO: task syz.4.21:4520 blocked for more than 144 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.21 state:D stack:26688 pid:4520 ppid:4425 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5246 [inline]
__schedule+0x107f/0x4030 kernel/sched/core.c:6563
schedule+0xb9/0x180 kernel/sched/core.c:6639
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6698
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x548/0xae0 kernel/locking/mutex.c:747
trace_array_get kernel/trace/trace.c:461 [inline]
tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4892
do_dentry_open+0x7dd/0x10b0 fs/open.c:882
do_open fs/namei.c:3634 [inline]
path_openat+0x2674/0x2f10 fs/namei.c:3791
do_filp_open+0x1ee/0x420 fs/namei.c:3818
do_sys_openat2+0x14b/0x4f0 fs/open.c:1320
do_sys_open fs/open.c:1336 [inline]
__do_sys_openat fs/open.c:1352 [inline]
__se_sys_openat fs/open.c:1347 [inline]
__x64_sys_openat+0x135/0x160 fs/open.c:1347
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f5c7039e0d9
RSP: 002b:00007f5c71350028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f5c70625fa0 RCX: 00007f5c7039e0d9
RDX: 0000000000000001 RSI: 0000200000000140 RDI: ffffffffffffff9c
RBP: 00007f5c70435024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5c70626038 R14: 00007f5c70625fa0 R15: 00007ffc9fc8df88
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8cb2e4f0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x33/0xef0 kernel/rcu/tasks.h:517
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8cb2ed10 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x33/0xef0 kernel/rcu/tasks.h:517
2 locks held by kworker/0:1/14:
#0: ffff888017472138 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x7b4/0x1160 kernel/workqueue.c:2267
#1: ffffc90000137d00 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7b4/0x1160 kernel/workqueue.c:2267
3 locks held by kworker/1:0/22:
#0: ffff88802fe06d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x7b4/0x1160 kernel/workqueue.c:2267
#1: ffffc900001c7d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7b4/0x1160 kernel/workqueue.c:2267
#2: ffffffff8dd5b968 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xc4/0x1500 net/ipv6/addrconf.c:4138
1 lock held by khungtaskd/27:
#0: ffffffff8cb2db60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
#0: ffffffff8cb2db60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline]
#0: ffffffff8cb2db60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x290 kernel/locking/lockdep.c:6527
2 locks held by getty/4031:
#0: ffff88807e7b0098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc9000327b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41e/0x1360 drivers/tty/n_tty.c:2198
3 locks held by kworker/0:3/4333:
#0: ffff888017470938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7b4/0x1160 kernel/workqueue.c:2267
#1: ffffc90004447d00 (
(work_completion)(&data->fib_event_work)
){+.+.}-{0:0}
, at: process_one_work+0x7b4/0x1160 kernel/workqueue.c:2267
#2: ffff888058111240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x283/0x3320 drivers/net/netdevsim/fib.c:1491
3 locks held by kworker/0:4/4397:
#0: ffff88802fe06d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x7b4/0x1160 kernel/workqueue.c:2267
#1: ffffc90004487d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7b4/0x1160 kernel/workqueue.c:2267
#2: ffffffff8dd5b968 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xc4/0x1500 net/ipv6/addrconf.c:4138
3 locks held by kworker/u4:7/4461:
6 locks held by syz.2.19/4479:
1 lock held by syz.1.18/4489:
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4892
1 lock held by syz.0.17/4497:
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4892
1 lock held by syz.3.20/4517:
#0: ffffffff8cb77748 (trace_types_lock
){+.+.}-{3:3}
, at: trace_array_get kernel/trace/trace.c:461 [inline]
, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
, at: tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4892
1 lock held by syz.4.21/4520:
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4892
1 lock held by syz.5.22/4563:
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4892
1 lock held by syz.6.23/4597:
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}
, at: trace_array_get kernel/trace/trace.c:461 [inline]
, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
, at: tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4892
1 lock held by syz.7.24/4604:
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4892
1 lock held by syz.8.25/4627:
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4892
1 lock held by syz.9.26/4629:
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4892
1 lock held by syz.2.35/4679:
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4892
1 lock held by syz.1.28/4696:
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4892
1 lock held by syz.0.30/4702:
#0: ffffffff8cb77748 (
trace_types_lock
){+.+.}-{3:3}
, at: trace_array_get kernel/trace/trace.c:461 [inline]
, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
, at: tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4892
1 lock held by syz.3.36/4719:
#0:
ffffffff8cb77748
(
trace_types_lock
){+.+.}-{3:3}
, at: trace_array_get kernel/trace/trace.c:461 [inline]
, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
, at: tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4892
1 lock held by syz.4.37/4721:
#0:
ffffffff8cb77748
(trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
(trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
(trace_types_lock){+.+.}-{3:3}, at: tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4892
1 lock held by syz.5.38/4751:
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4892
1 lock held by syz.6.39/4772:
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4892
1 lock held by syz.7.40/4800:
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4892
1 lock held by syz.8.41/4825:
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4892
1 lock held by syz.9.42/4837:
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4892
1 lock held by syz.2.50/4877:
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4892
1 lock held by syz.1.44/4886:
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4892
1 lock held by syz.0.45/4903:
#0:
ffffffff8cb77748
(
trace_types_lock
){+.+.}-{3:3}
, at: trace_array_get kernel/trace/trace.c:461 [inline]
, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
, at: tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4892
1 lock held by syz.3.51/4912:
#0:
ffffffff8cb77748
(
trace_types_lock
){+.+.}-{3:3}
, at: trace_array_get kernel/trace/trace.c:461 [inline]
, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
, at: tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4892
1 lock held by syz.4.52/4923:
#0:
ffffffff8cb77748
(trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
(trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
(trace_types_lock){+.+.}-{3:3}, at: tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4892
1 lock held by syz.5.53/4955:
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4892
1 lock held by syz.6.54/4982:
#0: ffffffff8cb77748
(trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
(trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
(trace_types_lock){+.+.}-{3:3}, at: tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4892
1 lock held by syz.7.55/4998:
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4892
1 lock held by syz.8.56/5015:
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4892
1 lock held by syz.9.57/5033:
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4892
3 locks held by syz-executor/5034:
6 locks held by syz-executor/5050:
#0: ffff88807e14a460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x270/0x9a0 fs/read_write.c:580
#1: ffff88807c842888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1d8/0x520 fs/kernfs/file.c:343
#2: ffff8880279d0748 (kn->active#59){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
#2: ffff8880279d0748 (kn->active#59){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x232/0x520 fs/kernfs/file.c:344
#3: ffffffff8d66a3a8 (nsim_bus_dev_list_lock){+.+.}-{3:3}
, at: del_device_store+0xd3/0x370 drivers/net/netdevsim/bus.c:209
#4:
ffff888074db60e8
(
&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:885 [inline]
&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1099 [inline]
&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xb1/0x7c0 drivers/base/dd.c:1302
#5: ffffffff8cb33838 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline]
#5: ffffffff8cb33838 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3c0/0x890 kernel/rcu/tree_exp.h:962
1 lock held by syz.2.62/5072:
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: trace_array_get kernel/trace/trace.c:461 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_check_open_get_tr kernel/trace/trace.c:511 [inline]
#0: ffffffff8cb77748 (trace_types_lock){+.+.}-{3:3}, at: tracing_open_file_tr+0xab/0x2f0 kernel/trace/trace.c:4892
2 locks held by syz-executor/5070:
#0: ffffffff8dd4ead0 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x324/0x5b0 net/core/net_namespace.c:504
#1: ffffffff8dd5b968 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xf/0x50 net/core/dev.c:10369
2 locks held by dhcpcd/5073:
#0: ffff888058818130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1805 [inline]
#0: ffff888058818130 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x33/0xd40 net/packet/af_packet.c:3255
#1: ffffffff8cb33838 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline]
#1: ffffffff8cb33838 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3c0/0x890 kernel/rcu/tree_exp.h:962
=============================================
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 07/24/2026
Call Trace:
dump_stack_lvl+0x188/0x24e lib/dump_stack.c:106
nmi_cpu_backtrace+0x3e6/0x460 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1d4/0x450 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+0xf0e/0xf50 kernel/hung_task.c:377
kthread+0x29d/0x330 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4435 Comm: kworker/u4:6 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: bat_events batadv_nc_worker
RIP: 0010:debug_spin_unlock kernel/locking/spinlock_debug.c:99 [inline]
RIP: 0010:do_raw_spin_unlock+0x17/0x230 kernel/locking/spinlock_debug.c:140
Code: ff e8 0d 19 6e 00 e9 5f ff ff ff 0f 1f 84 00 00 00 00 00 55 41 57 41 56 41 55 41 54 53 48 89 fb 49 bc 00 00 00 00 00 fc ff df <4c> 8d 77 04 4c 89 f0 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 7e 01
RSP: 0018:ffffc900033b7b00 EFLAGS: 00000246
RAX: f3d8f78734b24400 RBX: ffff888074545840 RCX: f3d8f78734b24400
RDX: 0000000000000002 RSI: ffffffff8a8c2920 RDI: ffff888074545840
RBP: 0000000000000000 R08: ffffffff8e210aef R09: 1ffffffff1c4215d
R10: dffffc0000000000 R11: fffffbfff1c4215e R12: dffffc0000000000
R13: ffff8880307eb310 R14: ffffffff89f9d385 R15: ffff888052d90680
FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f47e0a0c4c8 CR3: 000000002b9f9000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__raw_spin_unlock_bh include/linux/spinlock_api_smp.h:166 [inline]
_raw_spin_unlock_bh+0x1f/0x30 kernel/locking/spinlock.c:210
spin_unlock_bh include/linux/spinlock.h:396 [inline]
batadv_nc_purge_paths+0x305/0x3a0 net/batman-adv/network-coding.c:471
batadv_nc_worker+0x31e/0x600 net/batman-adv/network-coding.c:720
process_one_work+0x8ab/0x1160 kernel/workqueue.c:2292
worker_thread+0xaf5/0x12a0 kernel/workqueue.c:2439
kthread+0x29d/0x330 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295