INFO: task syz-executor.5:3647 blocked for more than 143 seconds.
Not tainted 5.19.0-syzkaller-13930-g7ebfc85e2cd7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:21696 pid: 3647 ppid: 1 flags:0x00004004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5182 [inline]
__schedule+0x957/0xe20 kernel/sched/core.c:6494
schedule+0xcb/0x190 kernel/sched/core.c:6570
rwsem_down_read_slowpath+0x5fe/0x950 kernel/locking/rwsem.c:1087
__down_read_common+0x54/0x2a0 kernel/locking/rwsem.c:1252
kernfs_iop_permission+0xa9/0x360 fs/kernfs/inode.c:290
do_inode_permission fs/namei.c:458 [inline]
inode_permission+0x22c/0x450 fs/namei.c:525
may_lookup fs/namei.c:1715 [inline]
link_path_walk+0x2ff/0xed0 fs/namei.c:2262
path_openat+0x237/0x2e00 fs/namei.c:3687
do_filp_open+0x275/0x500 fs/namei.c:3718
do_sys_openat2+0x13b/0x500 fs/open.c:1311
do_sys_open fs/open.c:1327 [inline]
__do_sys_openat fs/open.c:1343 [inline]
__se_sys_openat fs/open.c:1338 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1338
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f9ed6a88db8
RSP: 002b:00007ffdc0ead980 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000002ded RCX: 00007f9ed6a88db8
RDX: 0000000000090800 RSI: 00007f9ed6ae2372 RDI: 00000000ffffff9c
RBP: 00007ffdc0eada4c R08: 0000000000090800 R09: 00007f9ed6ae2372
R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000000
R13: 000000000019270e R14: 0000000000000013 R15: 00007ffdc0eadab0
</TASK>
INFO: task kworker/0:2:27294 blocked for more than 144 seconds.
Not tainted 5.19.0-syzkaller-13930-g7ebfc85e2cd7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:2 state:D stack:22400 pid:27294 ppid: 2 flags:0x00004000
Workqueue: events linkwatch_event
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5182 [inline]
__schedule+0x957/0xe20 kernel/sched/core.c:6494
schedule+0xcb/0x190 kernel/sched/core.c:6570
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6629
__mutex_lock_common+0xecf/0x26c0 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799
linkwatch_event+0xa/0x50 net/core/link_watch.c:263
process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
</TASK>
INFO: task kworker/u4:2:544 blocked for more than 144 seconds.
Not tainted 5.19.0-syzkaller-13930-g7ebfc85e2cd7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:2 state:D stack:24000 pid: 544 ppid: 2 flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5182 [inline]
__schedule+0x957/0xe20 kernel/sched/core.c:6494
schedule+0xcb/0x190 kernel/sched/core.c:6570
rwsem_down_write_slowpath+0xe1c/0x1390 kernel/locking/rwsem.c:1182
__down_write_common kernel/locking/rwsem.c:1297 [inline]
__down_write kernel/locking/rwsem.c:1306 [inline]
down_write+0x163/0x170 kernel/locking/rwsem.c:1553
kernfs_drain fs/kernfs/dir.c:494 [inline]
__kernfs_remove+0xc92/0x1180 fs/kernfs/dir.c:1386
kernfs_remove_by_name_ns+0x96/0xe0 fs/kernfs/dir.c:1589
kernfs_remove_by_name include/linux/kernfs.h:615 [inline]
remove_files fs/sysfs/group.c:28 [inline]
sysfs_remove_group+0x102/0x2b0 fs/sysfs/group.c:288
sysfs_remove_groups+0x5b/0xb0 fs/sysfs/group.c:312
destroy_port drivers/infiniband/core/sysfs.c:1285 [inline]
ib_free_port_attrs+0x373/0x400 drivers/infiniband/core/sysfs.c:1410
remove_one_compat_dev drivers/infiniband/core/device.c:1002 [inline]
rdma_dev_exit_net+0x1f1/0x360 drivers/infiniband/core/device.c:1140
ops_exit_list net/core/net_namespace.c:163 [inline]
cleanup_net+0x758/0xc50 net/core/net_namespace.c:595
process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
</TASK>
INFO: task kworker/0:15:15310 blocked for more than 144 seconds.
Not tainted 5.19.0-syzkaller-13930-g7ebfc85e2cd7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:15 state:D stack:26904 pid:15310 ppid: 2 flags:0x00004000
Workqueue: ipv6_addrconf addrconf_verify_work
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5182 [inline]
__schedule+0x957/0xe20 kernel/sched/core.c:6494
schedule+0xcb/0x190 kernel/sched/core.c:6570
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6629
__mutex_lock_common+0xecf/0x26c0 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799
addrconf_verify_work+0x15/0x30 net/ipv6/addrconf.c:4620
process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
</TASK>
INFO: task syz-executor.5:16383 blocked for more than 145 seconds.
Not tainted 5.19.0-syzkaller-13930-g7ebfc85e2cd7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:23544 pid:16383 ppid: 3647 flags:0x00004004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5182 [inline]
__schedule+0x957/0xe20 kernel/sched/core.c:6494
schedule+0xcb/0x190 kernel/sched/core.c:6570
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6629
__mutex_lock_common+0xecf/0x26c0 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799
add_one_compat_dev+0x102/0x6e0 drivers/infiniband/core/device.c:943
rdma_dev_init_net+0x1f7/0x280 drivers/infiniband/core/device.c:1185
ops_init+0x313/0x430 net/core/net_namespace.c:135
setup_net+0x4bb/0xc10 net/core/net_namespace.c:326
copy_net_ns+0x359/0x5b0 net/core/net_namespace.c:472
create_new_namespaces+0x4db/0x8e0 kernel/nsproxy.c:110
copy_namespaces+0x333/0x3b0 kernel/nsproxy.c:178
copy_process+0x1af7/0x4010 kernel/fork.c:2259
kernel_clone+0x22f/0x7a0 kernel/fork.c:2673
__do_sys_clone kernel/fork.c:2807 [inline]
__se_sys_clone kernel/fork.c:2791 [inline]
__x64_sys_clone+0x276/0x2e0 kernel/fork.c:2791
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f9ed6a89279
RSP: 002b:00007f9ed7b11118 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f9ed6b9bf80 RCX: 00007f9ed6a89279
RDX: 0000000020000140 RSI: 0000000020000130 RDI: 0000000040000000
RBP: 00007f9ed6ae3189 R08: 00000000200001c0 R09: 00000000200001c0
R10: 0000000020000180 R11: 0000000000000206 R12: 0000000000000000
R13: 00007ffdc0ead78f R14: 00007f9ed7b11300 R15: 0000000000022000
</TASK>
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8cd20970 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8cd21170 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
#0: ffffffff8cd207a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3290:
#0: ffff8880185f6098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc90002d232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6e8/0x1e50 drivers/tty/n_tty.c:2177
1 lock held by syz-executor.5/3647:
#0: ffff888012067548 (&root->kernfs_rwsem){++++}-{3:3}, at: kernfs_iop_permission+0xa9/0x360 fs/kernfs/inode.c:290
3 locks held by kworker/0:2/27294:
#0: ffff888012064d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc900035efd00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffffffff8ddd5868 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xa/0x50 net/core/link_watch.c:263
2 locks held by kworker/u4:8/4575:
4 locks held by kworker/u4:2/544:
#0: ffff8880121c2938 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc9000b5ffd00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffffffff8ddc85d0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xf0/0xc50 net/core/net_namespace.c:557
#3: ffff888012067548 (&root->kernfs_rwsem){++++}-{3:3}, at: kernfs_drain fs/kernfs/dir.c:494 [inline]
#3: ffff888012067548 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0xc92/0x1180 fs/kernfs/dir.c:1386
3 locks held by kworker/0:15/15310:
#0: ffff888026dd4538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc90005237d00 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffffffff8ddd5868 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x15/0x30 net/ipv6/addrconf.c:4620
4 locks held by syz-executor.5/16383:
#0: ffffffff8ddc85d0 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x33d/0x5b0 net/core/net_namespace.c:468
#1: ffffffff8dbcbd90 (devices_rwsem){++++}-{3:3}, at: rdma_dev_init_net+0x190/0x280 drivers/infiniband/core/device.c:1179
#2: ffffffff8dbcbf50 (rdma_nets_rwsem){++++}-{3:3}, at: rdma_dev_init_net+0x1ec/0x280 drivers/infiniband/core/device.c:1184
#3: ffff888017cd0f18 (&device->compat_devs_mutex){+.+.}-{3:3}, at: add_one_compat_dev+0x102/0x6e0 drivers/infiniband/core/device.c:943
3 locks held by syz-executor.5/16389:
5 locks held by syz-executor.5/16396:
#0: ffffffff8ddc85d0 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x33d/0x5b0 net/core/net_namespace.c:468
#1: ffffffff8dbcbd90 (devices_rwsem){++++}-{3:3}, at: rdma_dev_init_net+0x190/0x280 drivers/infiniband/core/device.c:1179
#2: ffffffff8dbcbf50 (rdma_nets_rwsem){++++}-{3:3}, at: rdma_dev_init_net+0x1ec/0x280 drivers/infiniband/core/device.c:1184
#3: ffff888017cd0f18 (&device->compat_devs_mutex){+.+.}-{3:3}, at: add_one_compat_dev+0x102/0x6e0 drivers/infiniband/core/device.c:943
#4: ffff888012067548 (&root->kernfs_rwsem){++++}-{3:3}, at: kernfs_activate+0x7b/0x520 fs/kernfs/dir.c:1325
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 5.19.0-syzkaller-13930-g7ebfc85e2cd7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x47c/0x4b0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x169/0x280 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+0xcd5/0xd20 kernel/hung_task.c:369
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
</TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 16396 Comm: syz-executor.5 Not tainted 5.19.0-syzkaller-13930-g7ebfc85e2cd7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
RIP: 0010:rcu_rnp_online_cpus kernel/rcu/tree.c:224 [inline]
RIP: 0010:rcu_rdp_cpu_online kernel/rcu/tree.c:234 [inline]
RIP: 0010:rcu_lockdep_current_cpu_online+0xbb/0x120 kernel/rcu/tree.c:773
Code: 18 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 c8 ab 6a 00 48 8b 1b 48 83 c3 70 48 89 d8 48 c1 e8 03 42 80 3c 30 00 <74> 08 48 89 df e8 ab ab 6a 00 4c 23 3b 75 1a 48 c7 c7 00 5f d2 8c
RSP: 0018:ffffc90002ffebc0 EFLAGS: 00000046
RAX: 1ffffffff19a4ace RBX: ffffffff8cd25670 RCX: 0000000080000002
RDX: 0000000000000000 RSI: ffffffff8b0a5440 RDI: ffff8880b9b3aae0
RBP: ffffc90002ffec68 R08: dffffc0000000000 R09: fffffbfff1c4ace6
R10: fffffbfff1c4ace6 R11: 1ffffffff1c4ace5 R12: dffffc0000000000
R13: 1ffff920005ffda0 R14: dffffc0000000000 R15: 0000000000000002
FS: 00007f9ed59dd700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2f128000 CR3: 00000000796a8000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
rcu_read_lock_held_common kernel/rcu/update.c:112 [inline]
rcu_read_lock_sched_held+0x74/0x130 kernel/rcu/update.c:123
trace_lock_acquire+0x7f/0x1d0 include/trace/events/lock.h:24
lock_acquire+0xa5/0x400 kernel/locking/lockdep.c:5637
__raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline]
_raw_spin_lock_irq+0xcf/0x110 kernel/locking/spinlock.c:170
rwsem_down_write_slowpath+0xa08/0x1390 kernel/locking/rwsem.c:1186
__down_write_common kernel/locking/rwsem.c:1297 [inline]
__down_write kernel/locking/rwsem.c:1306 [inline]
down_write+0x163/0x170 kernel/locking/rwsem.c:1553
kernfs_activate+0x7b/0x520 fs/kernfs/dir.c:1325
kernfs_add_one+0x5be/0x720 fs/kernfs/dir.c:775
__kernfs_create_file+0x232/0x2e0 fs/kernfs/file.c:1079
sysfs_add_file_mode_ns+0x21d/0x330 fs/sysfs/file.c:294
create_files fs/sysfs/group.c:64 [inline]
internal_create_group+0x55c/0xf50 fs/sysfs/group.c:148
internal_create_groups fs/sysfs/group.c:188 [inline]
sysfs_create_groups+0x5d/0x130 fs/sysfs/group.c:214
setup_gid_attrs drivers/infiniband/core/sysfs.c:1169 [inline]
ib_setup_port_attrs+0x14bd/0x22a0 drivers/infiniband/core/sysfs.c:1441
add_one_compat_dev+0x4f7/0x6e0 drivers/infiniband/core/device.c:969
rdma_dev_init_net+0x1f7/0x280 drivers/infiniband/core/device.c:1185
ops_init+0x313/0x430 net/core/net_namespace.c:135
setup_net+0x4bb/0xc10 net/core/net_namespace.c:326
copy_net_ns+0x359/0x5b0 net/core/net_namespace.c:472
create_new_namespaces+0x4db/0x8e0 kernel/nsproxy.c:110
copy_namespaces+0x333/0x3b0 kernel/nsproxy.c:178
copy_process+0x1af7/0x4010 kernel/fork.c:2259
kernel_clone+0x22f/0x7a0 kernel/fork.c:2673
__do_sys_clone kernel/fork.c:2807 [inline]
__se_sys_clone kernel/fork.c:2791 [inline]
__x64_sys_clone+0x276/0x2e0 kernel/fork.c:2791
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f9ed6a89279
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f9ed59dd118 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f9ed6b9c120 RCX: 00007f9ed6a89279
RDX: 0000000020000140 RSI: 0000000020000130 RDI: 0000000040000000
RBP: 00007f9ed6ae3189 R08: 00000000200001c0 R09: 00000000200001c0
R10: 0000000020000180 R11: 0000000000000206 R12: 0000000000000000
R13: 00007ffdc0ead78f R14: 00007f9ed59dd300 R15: 0000000000022000
</TASK>