INFO: task syz-executor.3:28443 blocked for more than 143 seconds.
Not tainted 6.3.0-rc6-syzkaller-00034-ge62252bc55b6 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:24952 pid:28443 ppid:1 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5307 [inline]
__schedule+0xc91/0x5770 kernel/sched/core.c:6625
schedule+0xde/0x1a0 kernel/sched/core.c:6701
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6760
rwsem_down_write_slowpath+0x3e2/0x1220 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write+0x1d2/0x200 kernel/locking/rwsem.c:1574
register_netdevice_notifier+0x22/0x270 net/core/dev.c:1712
devlink_alloc_ns+0x144/0xac0 net/devlink/core.c:208
nsim_drv_probe+0xba/0x13d0 drivers/net/netdevsim/dev.c:1533
call_driver_probe drivers/base/dd.c:552 [inline]
really_probe+0x240/0xca0 drivers/base/dd.c:631
__driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:768
driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:798
__device_attach_driver+0x1d4/0x2e0 drivers/base/dd.c:926
bus_for_each_drv+0x149/0x1d0 drivers/base/bus.c:457
__device_attach+0x1e4/0x4b0 drivers/base/dd.c:998
bus_probe_device+0x17c/0x1c0 drivers/base/bus.c:532
device_add+0x11c4/0x1c50 drivers/base/core.c:3589
nsim_bus_dev_new drivers/net/netdevsim/bus.c:290 [inline]
new_device_store+0x40e/0x690 drivers/net/netdevsim/bus.c:167
bus_attr_store+0x76/0xa0 drivers/base/bus.c:170
sysfs_kf_write+0x114/0x170 fs/sysfs/file.c:136
kernfs_fop_write_iter+0x3f1/0x600 fs/kernfs/file.c:334
call_write_iter include/linux/fs.h:1851 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x9ed/0xe10 fs/read_write.c:584
ksys_write+0x12b/0x250 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd52ee3deef
RSP: 002b:00007fd52f0cf220 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fd52ee3deef
RDX: 0000000000000003 RSI: 00007fd52f0cf270 RDI: 0000000000000005
RBP: 0000000000000005 R08: 0000000000000000 R09: 00007fd52f0cf1c0
R10: 0000000000000000 R11: 0000000000000293 R12: 00007fd52eee78da
R13: 00007fd52f0cf270 R14: 0000000000000000 R15: 00007fd52f0cf940
INFO: task syz-executor.4:28453 blocked for more than 144 seconds.
Not tainted 6.3.0-rc6-syzkaller-00034-ge62252bc55b6 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:25072 pid:28453 ppid:1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5307 [inline]
__schedule+0xc91/0x5770 kernel/sched/core.c:6625
schedule+0xde/0x1a0 kernel/sched/core.c:6701
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6760
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa3b/0x1350 kernel/locking/mutex.c:747
del_device_store+0xc9/0x4a0 drivers/net/netdevsim/bus.c:209
bus_attr_store+0x76/0xa0 drivers/base/bus.c:170
sysfs_kf_write+0x114/0x170 fs/sysfs/file.c:136
kernfs_fop_write_iter+0x3f1/0x600 fs/kernfs/file.c:334
call_write_iter include/linux/fs.h:1851 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x9ed/0xe10 fs/read_write.c:584
ksys_write+0x12b/0x250 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fadb083deef
RSP: 002b:00007fadb0acf220 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fadb083deef
RDX: 0000000000000001 RSI: 00007fadb0acf270 RDI: 0000000000000005
RBP: 0000000000000005 R08: 0000000000000000 R09: 00007fadb0acf1c0
R10: 0000000000000000 R11: 0000000000000293 R12: 00007fadb08e78b6
R13: 00007fadb0acf270 R14: 0000000000000000 R15: 00007fadb0acf940
Showing all locks held in the system:
5 locks held by kworker/u4:1/11:
#0: ffff888016617138 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888016617138 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888016617138 ((wq_completion)netns){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888016617138 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888016617138 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888016617138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x87a/0x15c0 kernel/workqueue.c:2361
#1: ffffc90000107da8 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x8ae/0x15c0 kernel/workqueue.c:2365
#2: ffffffff8e0e2590 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x9f/0xb10 net/core/net_namespace.c:575
#3: ffff88804aa653e8 (&wg->device_update_lock){+.+.}-{3:3}, at: wg_destruct+0x14f/0x400 drivers/net/wireguard/device.c:249
#4: ffffffff8c7a0780 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x48/0x6a0 kernel/rcu/tree.c:3956
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8c794a70 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:510
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8c794770 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:510
1 lock held by khungtaskd/28:
#0: ffffffff8c7955c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6495
2 locks held by getty/4753:
#0: ffff88802c074098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177
6 locks held by syz-executor.3/28443:
#0: ffff88807e8b6460 (sb_writers#8){.+.+}-{0:0}, at: ksys_write+0x12b/0x250 fs/read_write.c:637
#1: ffff88801cdab088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x285/0x600 fs/kernfs/file.c:325
#2: ffff8880213da1d8 (kn->active#52){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2a9/0x600 fs/kernfs/file.c:326
#3: ffffffff8d7e1728 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: new_device_store+0x170/0x690 drivers/net/netdevsim/bus.c:160
#4: ffff888017df40e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline]
#4: ffff888017df40e8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x76/0x4b0 drivers/base/dd.c:973
#5: ffffffff8e0e2590 (pernet_ops_rwsem){++++}-{3:3}, at: register_netdevice_notifier+0x22/0x270 net/core/dev.c:1712
4 locks held by syz-executor.4/28453:
#0: ffff88807e8b6460 (sb_writers#8){.+.+}-{0:0}, at: ksys_write+0x12b/0x250 fs/read_write.c:637
#1: ffff88804bd42488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x285/0x600 fs/kernfs/file.c:325
#2: ffff8880213da2c0 (kn->active#51){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2a9/0x600 fs/kernfs/file.c:326
#3: ffffffff8d7e1728 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xc9/0x4a0 drivers/net/netdevsim/bus.c:209
1 lock held by syz-executor.3/28869:
#0: ffffffff8e0e2590 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4cb/0x8e0 net/core/net_namespace.c:486
1 lock held by syz-executor.4/28872:
#0: ffffffff8e0e2590 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4cb/0x8e0 net/core/net_namespace.c:486
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.3.0-rc6-syzkaller-00034-ge62252bc55b6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
nmi_cpu_backtrace+0x29c/0x350 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x2a4/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xe16/0x1090 kernel/hung_task.c:379
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 27582 Comm: kworker/u4:11 Not tainted 6.3.0-rc6-syzkaller-00034-ge62252bc55b6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
Workqueue: bat_events batadv_nc_worker
RIP: 0010:hlock_class kernel/locking/lockdep.c:228 [inline]
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4755 [inline]
RIP: 0010:__lock_acquire+0x6f8/0x5d40 kernel/locking/lockdep.c:5006
Code: 20 66 81 e2 ff 1f 0f b7 da be 08 00 00 00 48 89 d8 48 c1 e8 06 48 8d 3c c5 80 2b 4d 91 e8 60 ad 6f 00 48 0f a3 1d 18 e5 e8 0f <0f> 82 3f ff ff ff 48 c7 c0 40 12 da 91 48 c1 e8 03 42 0f b6 14 38
RSP: 0018:ffffc90005af7a30 EFLAGS: 00000047
RAX: 0000000000000001 RBX: 00000000000006c0 RCX: ffffffff81644660
RDX: fffffbfff229a58c RSI: 0000000000000008 RDI: ffffffff914d2c58
RBP: 0000000000000004 R08: 0000000000000000 R09: ffffffff914d2c5f
R10: fffffbfff229a58b R11: 0000000000000000 R12: 0000000000000001
R13: ffff888021428000 R14: ffff888021428a38 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555558ac708 CR3: 000000000c571000 CR4: 00000000003506e0
Call Trace:
lock_acquire kernel/locking/lockdep.c:5669 [inline]
lock_acquire+0x1af/0x520 kernel/locking/lockdep.c:5634
rcu_lock_acquire include/linux/rcupdate.h:327 [inline]
rcu_read_lock include/linux/rcupdate.h:773 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0x131/0xfe0 net/batman-adv/network-coding.c:719
process_one_work+0x991/0x15c0 kernel/workqueue.c:2390
worker_thread+0x669/0x1090 kernel/workqueue.c:2537
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308