INFO: task syz-executor.1:17177 blocked for more than 143 seconds.
Not tainted 6.3.0-rc6-syzkaller-01688-g0af03871b6af #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:24664 pid:17177 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
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
unregister_netdevice_notifier+0x22/0x180 net/core/dev.c:1757
devlink_free+0x2cb/0x460 net/devlink/core.c:269
nsim_drv_remove+0x158/0x1d0 drivers/net/netdevsim/dev.c:1687
device_remove+0xc8/0x170 drivers/base/dd.c:540
__device_release_driver drivers/base/dd.c:1240 [inline]
device_release_driver_internal+0x443/0x610 drivers/base/dd.c:1263
bus_remove_device+0x22c/0x420 drivers/base/bus.c:574
device_del+0x48a/0xb80 drivers/base/core.c:3775
device_unregister+0x1e/0xc0 drivers/base/core.c:3805
nsim_bus_dev_del drivers/net/netdevsim/bus.c:310 [inline]
del_device_store+0x34e/0x4a0 drivers/net/netdevsim/bus.c:219
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+0x9f6/0xe20 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: 0033:0x7f0b4503deef
RSP: 002b:00007ffc3bc99630 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f0b4503deef
RDX: 0000000000000001 RSI: 00007ffc3bc99680 RDI: 0000000000000005
RBP: 0000000000000005 R08: 0000000000000000 R09: 00007ffc3bc995d0
R10: 0000000000000000 R11: 0000000000000293 R12: 00007f0b450e78b6
R13: 00007ffc3bc99680 R14: 0000000000000000 R15: 00007ffc3bc99d50
INFO: task syz-executor.5:17190 blocked for more than 143 seconds.
Not tainted 6.3.0-rc6-syzkaller-01688-g0af03871b6af #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:25072 pid:17190 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
__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+0x9f6/0xe20 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: 0033:0x7fb3fa03deef
RSP: 002b:00007fff1be58b60 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fb3fa03deef
RDX: 0000000000000001 RSI: 00007fff1be58bb0 RDI: 0000000000000005
RBP: 0000000000000005 R08: 0000000000000000 R09: 00007fff1be58b00
R10: 0000000000000000 R11: 0000000000000293 R12: 00007fb3fa0e78b6
R13: 00007fff1be58bb0 R14: 0000000000000000 R15: 00007fff1be59280
INFO: task syz-executor.4:17191 blocked for more than 143 seconds.
Not tainted 6.3.0-rc6-syzkaller-01688-g0af03871b6af #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:23648 pid:17191 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
__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+0x9f6/0xe20 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: 0033:0x7f2cd243deef
RSP: 002b:00007ffc38555d70 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f2cd243deef
RDX: 0000000000000001 RSI: 00007ffc38555dc0 RDI: 0000000000000005
RBP: 0000000000000005 R08: 0000000000000000 R09: 00007ffc38555d10
R10: 0000000000000000 R11: 0000000000000293 R12: 00007f2cd24e78b6
R13: 00007ffc38555dc0 R14: 0000000000000000 R15: 00007ffc38556490
INFO: task syz-executor.0:17198 blocked for more than 144 seconds.
Not tainted 6.3.0-rc6-syzkaller-01688-g0af03871b6af #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:24712 pid:17198 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
__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+0x9f6/0xe20 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: 0033:0x7f6570c3deef
RSP: 002b:00007ffd51b8ece0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f6570c3deef
RDX: 0000000000000001 RSI: 00007ffd51b8ed30 RDI: 0000000000000005
RBP: 0000000000000005 R08: 0000000000000000 R09: 00007ffd51b8ec80
R10: 0000000000000000 R11: 0000000000000293 R12: 00007f6570ce78b6
R13: 00007ffd51b8ed30 R14: 0000000000000000 R15: 00007ffd51b8f400
INFO: task syz-executor.2:17200 blocked for more than 144 seconds.
Not tainted 6.3.0-rc6-syzkaller-01688-g0af03871b6af #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:24664 pid:17200 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
__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+0x9f6/0xe20 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: 0033:0x7f3e92a3deef
RSP: 002b:00007ffd324466e0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f3e92a3deef
RDX: 0000000000000001 RSI: 00007ffd32446730 RDI: 0000000000000005
RBP: 0000000000000005 R08: 0000000000000000 R09: 00007ffd32446680
R10: 0000000000000000 R11: 0000000000000293 R12: 00007f3e92ae78b6
R13: 00007ffd32446730 R14: 0000000000000000 R15: 00007ffd32446e00
Showing all locks held in the system:
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 klogd/4428:
#0: ffff8880b993c298 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2f/0x120 kernel/sched/core.c:539
#1: ffff88814b0ecab0 (&mm->cid_lock){....}-{2:2}, at: mm_cid_get kernel/sched/sched.h:3280 [inline]
#1: ffff88814b0ecab0 (&mm->cid_lock){....}-{2:2}, at: switch_mm_cid kernel/sched/sched.h:3302 [inline]
#1: ffff88814b0ecab0 (&mm->cid_lock){....}-{2:2}, at: prepare_task_switch kernel/sched/core.c:5117 [inline]
#1: ffff88814b0ecab0 (&mm->cid_lock){....}-{2:2}, at: context_switch kernel/sched/core.c:5258 [inline]
#1: ffff88814b0ecab0 (&mm->cid_lock){....}-{2:2}, at: __schedule+0x2802/0x5770 kernel/sched/core.c:6625
2 locks held by getty/4755:
#0: ffff88802b992098 (&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
3 locks held by kworker/u4:5/8656:
#0: ffff88801661f138 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff88801661f138 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff88801661f138 ((wq_completion)netns){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1324 [inline]
#0: ffff88801661f138 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff88801661f138 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff88801661f138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x87a/0x15c0 kernel/workqueue.c:2361
#1: ffffc900050f7da8 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x8ae/0x15c0 kernel/workqueue.c:2365
#2: ffffffff8e0e9350 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x9f/0xb10 net/core/net_namespace.c:575
2 locks held by kworker/u4:22/11337:
6 locks held by syz-executor.1/17177:
#0: ffff88802bbb4460 (sb_writers#8){.+.+}-{0:0}, at: ksys_write+0x12b/0x250 fs/read_write.c:637
#1: ffff888021a95488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x285/0x600 fs/kernfs/file.c:325
#2: ffff88801fdb8008 (kn->active#51){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2a9/0x600 fs/kernfs/file.c:326
#3: ffffffff8d7e8048 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xc9/0x4a0 drivers/net/netdevsim/bus.c:209
#4: ffff88807903d0e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline]
#4: ffff88807903d0e8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1063 [inline]
#4: ffff88807903d0e8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1260
#5: ffffffff8e0e9350 (pernet_ops_rwsem){++++}-{3:3}, at: unregister_netdevice_notifier+0x22/0x180 net/core/dev.c:1757
4 locks held by syz-executor.5/17190:
#0: ffff88802bbb4460 (sb_writers#8){.+.+}-{0:0}, at: ksys_write+0x12b/0x250 fs/read_write.c:637
#1: ffff88801c656088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x285/0x600 fs/kernfs/file.c:325
#2: ffff88801fdb8008 (kn->active#51){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2a9/0x600 fs/kernfs/file.c:326
#3: ffffffff8d7e8048 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xc9/0x4a0 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor.4/17191:
#0: ffff88802bbb4460 (sb_writers#8){.+.+}-{0:0}, at: ksys_write+0x12b/0x250 fs/read_write.c:637
#1: ffff888042aa4888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x285/0x600 fs/kernfs/file.c:325
#2: ffff88801fdb8008 (kn->active#51){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2a9/0x600 fs/kernfs/file.c:326
#3: ffffffff8d7e8048 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xc9/0x4a0 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor.0/17198:
#0: ffff88802bbb4460 (sb_writers#8){.+.+}-{0:0}, at: ksys_write+0x12b/0x250 fs/read_write.c:637
#1: ffff888042aa4488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x285/0x600 fs/kernfs/file.c:325
#2: ffff88801fdb8008 (kn->active#51){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2a9/0x600 fs/kernfs/file.c:326
#3: ffffffff8d7e8048 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xc9/0x4a0 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor.2/17200:
#0: ffff88802bbb4460 (sb_writers#8){.+.+}-{0:0}, at: ksys_write+0x12b/0x250 fs/read_write.c:637
#1: ffff888026f61088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x285/0x600 fs/kernfs/file.c:325
#2: ffff88801fdb8008 (kn->active#51){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x2a9/0x600 fs/kernfs/file.c:326
#3: ffffffff8d7e8048 (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.1/18777:
#0: ffffffff8e0e9350 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4cb/0x8e0 net/core/net_namespace.c:486
1 lock held by syz-executor.5/18780:
#0: ffffffff8e0e9350 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4cb/0x8e0 net/core/net_namespace.c:486
1 lock held by syz-executor.2/18783:
#0: ffffffff8e0e9350 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4cb/0x8e0 net/core/net_namespace.c:486
1 lock held by syz-executor.4/18787:
#0: ffffffff8e0e9350 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4cb/0x8e0 net/core/net_namespace.c:486
1 lock held by syz-executor.0/18790:
#0: ffffffff8e0e9350 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4cb/0x8e0 net/core/net_namespace.c:486
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.3.0-rc6-syzkaller-01688-g0af03871b6af #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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 11300 Comm: kworker/u4:19 Not tainted 6.3.0-rc6-syzkaller-01688-g0af03871b6af #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
Workqueue: 0x0 (events_unbound)
RIP: 0010:worker_thread+0xda/0x1090 kernel/workqueue.c:2555
Code: 48 8b 04 25 80 b8 03 00 48 8d 70 18 48 89 44 24 68 83 e0 07 83 c0 03 48 89 74 24 60 88 44 24 77 e9 8b 00 00 00 4c 8b 74 24 30 11 df 2f 00 4c 89 f7 e8 29 4d ff ff e8 04 df 2f 00 48 b8 00 00
RSP: 0018:ffffc9000eff7e50 EFLAGS: 00000006
RAX: 0000000000000000 RBX: 0000000000000088 RCX: 0000000000000000
RDX: ffff88807dcf57c0 RSI: ffffffff8153056d RDI: 0000000000000005
RBP: 0000000000000080 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000080 R11: 0000000000000000 R12: ffffffff91de09c0
R13: 0000000000000000 R14: ffff88807a703300 R15: ffff8880124c1000
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005590e8d59680 CR3: 000000000c571000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308