INFO: task syz-executor.1:3681 blocked for more than 144 seconds.
Not tainted 6.1.0-rc8-syzkaller-00152-g3ecc37918c80 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:21816 pid:3681 ppid:1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5209 [inline]
__schedule+0x8fc/0xda0 kernel/sched/core.c:6521
schedule+0xcb/0x190 kernel/sched/core.c:6597
rwsem_down_read_slowpath+0x5fe/0x950 kernel/locking/rwsem.c:1095
__down_read_common+0x54/0x2a0 kernel/locking/rwsem.c:1260
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+0x2ef/0xf00 fs/namei.c:2262
path_openat+0x237/0x2e00 fs/namei.c:3710
do_filp_open+0x275/0x500 fs/namei.c:3741
do_sys_openat2+0x13b/0x500 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_openat fs/open.c:1342 [inline]
__se_sys_openat fs/open.c:1337 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1337
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: 0033:0x7f0c2308bc48
RSP: 002b:00007ffe7d472e20 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000002c0b RCX: 00007f0c2308bc48
RDX: 0000000000090800 RSI: 00007f0c230e6bc8 RDI: 00000000ffffff9c
RBP: 00007ffe7d472eec R08: 0000000000090800 R09: 00007f0c230e6bc8
R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000000
R13: 0000000000339389 R14: 000000000000000e R15: 00007ffe7d472f50
INFO: task kworker/u4:20:23261 blocked for more than 144 seconds.
Not tainted 6.1.0-rc8-syzkaller-00152-g3ecc37918c80 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:20 state:D stack:24824 pid:23261 ppid:2 flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
context_switch kernel/sched/core.c:5209 [inline]
__schedule+0x8fc/0xda0 kernel/sched/core.c:6521
schedule+0xcb/0x190 kernel/sched/core.c:6597
rwsem_down_write_slowpath+0xfdc/0x14a0 kernel/locking/rwsem.c:1190
__down_write_common kernel/locking/rwsem.c:1305 [inline]
__down_write kernel/locking/rwsem.c:1314 [inline]
down_write+0x231/0x270 kernel/locking/rwsem.c:1563
kernfs_remove_by_name_ns+0x76/0x150 fs/kernfs/dir.c:1631
kernfs_remove_by_name include/linux/kernfs.h:618 [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:169 [inline]
cleanup_net+0x758/0xc50 net/core/net_namespace.c:601
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 arch/x86/entry/entry_64.S:306
INFO: task syz-executor.1:11864 blocked for more than 145 seconds.
Not tainted 6.1.0-rc8-syzkaller-00152-g3ecc37918c80 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:25080 pid:11864 ppid:3681 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5209 [inline]
__schedule+0x8fc/0xda0 kernel/sched/core.c:6521
schedule+0xcb/0x190 kernel/sched/core.c:6597
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6656
__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+0x353/0x5d0 net/core/net_namespace.c:135
setup_net+0x4bb/0xc10 net/core/net_namespace.c:332
copy_net_ns+0x359/0x5b0 net/core/net_namespace.c:478
create_new_namespaces+0x4db/0x8e0 kernel/nsproxy.c:110
copy_namespaces+0x333/0x390 kernel/nsproxy.c:178
copy_process+0x1a55/0x3fc0 kernel/fork.c:2256
kernel_clone+0x227/0x640 kernel/fork.c:2671
__do_sys_clone3 kernel/fork.c:2970 [inline]
__se_sys_clone3+0x372/0x410 kernel/fork.c:2954
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: 0033:0x7f0c2308c0d9
RSP: 002b:00007f0c23e94038 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3
RAX: ffffffffffffffda RBX: 00007f0c231ac120 RCX: 00007f0c2308c0d9
RDX: 0000000000000000 RSI: 0000000000000058 RDI: 00007f0c23e94050
RBP: 00007f0c230e7ae9 R08: 0000000000000000 R09: 0000000000000058
R10: 00007f0c23e94050 R11: 0000000000000246 R12: 0000000000000058
R13: 00007ffe7d472c2f R14: 00007f0c23e94300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d323fb0 (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: ffffffff8d3247b0 (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: ffffffff8d323de0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3315:
#0: ffff88814a794098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900031262f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6e8/0x1e50 drivers/tty/n_tty.c:2177
1 lock held by syz-executor.0/3670:
#0: ffff888012867948 (&root->kernfs_rwsem){++++}-{3:3}, at: kernfs_iop_permission+0xa9/0x360 fs/kernfs/inode.c:290
1 lock held by syz-executor.3/3675:
#0: ffff888012867948 (&root->kernfs_rwsem){++++}-{3:3}, at: kernfs_iop_permission+0xa9/0x360 fs/kernfs/inode.c:290
1 lock held by syz-executor.1/3681:
#0: ffff888012867948 (&root->kernfs_rwsem){++++}-{3:3}, at: kernfs_iop_permission+0xa9/0x360 fs/kernfs/inode.c:290
1 lock held by syz-executor.4/10308:
#0: ffff888012867948 (&root->kernfs_rwsem){++++}-{3:3}, at: kernfs_iop_permission+0xa9/0x360 fs/kernfs/inode.c:290
4 locks held by kworker/u4:20/23261:
#0: ffff8880129c3138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc9000397fd00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffffffff8e457a50 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xf0/0xc50 net/core/net_namespace.c:563
#3: ffff888012867948 (&root->kernfs_rwsem){++++}-{3:3}, at: kernfs_remove_by_name_ns+0x76/0x150 fs/kernfs/dir.c:1631
3 locks held by kworker/1:100/29134:
#0: ffff88814a65cd38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc900158efd00 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffffffff8e463d88 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x15/0x30 net/ipv6/addrconf.c:4624
2 locks held by kworker/0:24/9689:
3 locks held by kworker/0:25/9690:
#0: ffff88814a65cd38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc9001521fd00 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffffffff8e463d88 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x15/0x30 net/ipv6/addrconf.c:4624
4 locks held by syz-executor.5/11837:
#0: ffffffff8e457a50 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x33d/0x5b0 net/core/net_namespace.c:474
#1: ffffffff8e463d88 (rtnl_mutex){+.+.}-{3:3}, at: ip_tunnel_delete_nets+0xc9/0x370 net/ipv4/ip_tunnel.c:1121
#2: ffff888012867948 (&root->kernfs_rwsem){++++}-{3:3}, at: kernfs_remove_by_name_ns+0x76/0x150 fs/kernfs/dir.c:1631
#3: ffff888012867908 (&sem->wait_lock){....}-{2:2}, at: rwsem_down_write_slowpath+0xbb8/0x14a0 kernel/locking/rwsem.c:1194
5 locks held by syz-executor.2/11859:
4 locks held by syz-executor.1/11864:
#0: ffffffff8e457a50 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x33d/0x5b0 net/core/net_namespace.c:474
#1: ffffffff8e257370 (devices_rwsem){++++}-{3:3}, at: rdma_dev_init_net+0x190/0x280 drivers/infiniband/core/device.c:1179
#2: ffffffff8e257530 (rdma_nets_rwsem){++++}-{3:3}, at: rdma_dev_init_net+0x1ec/0x280 drivers/infiniband/core/device.c:1184
#3: ffff8880891bcf18 (&device->compat_devs_mutex){+.+.}-{3:3}, at: add_one_compat_dev+0x102/0x6e0 drivers/infiniband/core/device.c:943
2 locks held by syz-executor.4/11882:
#0: ffffffff8e457a50 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x33d/0x5b0 net/core/net_namespace.c:474
#1: ffff888012867948 (&root->kernfs_rwsem){++++}-{3:3}, at: kernfs_add_one+0x94/0x560 fs/kernfs/dir.c:748
2 locks held by syz-executor.0/11881:
#0: ffffffff8e457a50 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x33d/0x5b0 net/core/net_namespace.c:474
#1: ffff888012867948 (&root->kernfs_rwsem){++++}-{3:3}, at: kernfs_add_one+0x94/0x560 fs/kernfs/dir.c:748
2 locks held by syz-executor.3/11887:
#0: ffffffff8e457a50 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x33d/0x5b0 net/core/net_namespace.c:474
#1: ffff888012867948 (&root->kernfs_rwsem){++++}-{3:3}, at: kernfs_add_one+0x94/0x560 fs/kernfs/dir.c:748
1 lock held by syz-executor.5/11890:
#0: ffff888012867948 (&root->kernfs_rwsem){++++}-{3:3}, at: kernfs_iop_permission+0xa9/0x360 fs/kernfs/inode.c:290
1 lock held by syz-executor.2/11893:
#0: ffff888012867948 (&root->kernfs_rwsem){++++}-{3:3}, at: kernfs_iop_permission+0xa9/0x360 fs/kernfs/inode.c:290
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.1.0-rc8-syzkaller-00152-g3ecc37918c80 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x4e3/0x560 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x19b/0x3e0 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+0xcf5/0xd40 kernel/hung_task.c:377
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 11837 Comm: syz-executor.5 Not tainted 6.1.0-rc8-syzkaller-00152-g3ecc37918c80 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:__lock_is_held kernel/locking/lockdep.c:5409 [inline]
RIP: 0010:lock_is_held_type+0xb1/0x190 kernel/locking/lockdep.c:5711
Code: 53 4c 89 ed 48 81 c5 50 0a 00 00 31 db 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 83 fb 31 73 24 48 89 ef 4c 89 fe e8 2f 02 00 00 <85> c0 75 2a 48 ff c3 49 63 85 48 0a 00 00 48 83 c5 28 48 39 c3 7c
RSP: 0018:ffffc9000373ed58 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000000080000002
RDX: 0000000000000000 RSI: ffffffff8d323d60 RDI: ffff8880adeea7e0
RBP: ffff8880adeea7e0 R08: dffffc0000000000 R09: fffffbfff1d1f5a6
R10: fffffbfff1d1f5a6 R11: 1ffffffff1d1f5a5 R12: 0000000000000046
R13: ffff8880adee9d40 R14: 00000000ffffffff R15: ffffffff8d323d60
FS: 00007ff5ff642700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055601c87b680 CR3: 00000000a7fc5000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_is_held include/linux/lockdep.h:283 [inline]
rcu_read_lock_sched_held+0x89/0x130 kernel/rcu/update.c:125
trace_lock_acquire+0x98/0x260 include/trace/events/lock.h:24
lock_acquire+0xa5/0x400 kernel/locking/lockdep.c:5639
__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+0xbb8/0x14a0 kernel/locking/rwsem.c:1194
__down_write_common kernel/locking/rwsem.c:1305 [inline]
__down_write kernel/locking/rwsem.c:1314 [inline]
down_write+0x231/0x270 kernel/locking/rwsem.c:1563
kernfs_remove_by_name_ns+0x76/0x150 fs/kernfs/dir.c:1631
kernfs_remove_by_name include/linux/kernfs.h:618 [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
__kobject_del+0x84/0x300 lib/kobject.c:579
kobject_cleanup+0x25d/0x470 lib/kobject.c:664
netdev_queue_update_kobjects+0x417/0x4c0 net/core/net-sysfs.c:1733
remove_queue_kobjects net/core/net-sysfs.c:1830 [inline]
netdev_unregister_kobject+0x112/0x250 net/core/net-sysfs.c:1983
unregister_netdevice_many+0x14aa/0x1a30 net/core/dev.c:10874
ip_tunnel_delete_nets+0x325/0x370 net/ipv4/ip_tunnel.c:1126
ops_exit_list net/core/net_namespace.c:174 [inline]
setup_net+0x990/0xc10 net/core/net_namespace.c:355
copy_net_ns+0x359/0x5b0 net/core/net_namespace.c:478
create_new_namespaces+0x4db/0x8e0 kernel/nsproxy.c:110
copy_namespaces+0x333/0x390 kernel/nsproxy.c:178
copy_process+0x1a55/0x3fc0 kernel/fork.c:2256
kernel_clone+0x227/0x640 kernel/fork.c:2671
__do_sys_clone3 kernel/fork.c:2970 [inline]
__se_sys_clone3+0x372/0x410 kernel/fork.c:2954
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: 0033:0x7ff5fe88c0d9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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:00007ff5ff642038 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3
RAX: ffffffffffffffda RBX: 00007ff5fe9ac050 RCX: 00007ff5fe88c0d9
RDX: 0000000000000000 RSI: 0000000000000058 RDI: 00007ff5ff642050
RBP: 00007ff5fe8e7ae9 R08: 0000000000000000 R09: 0000000000000058
R10: 00007ff5ff642050 R11: 0000000000000246 R12: 0000000000000058
R13: 00007fff0d0615bf R14: 00007ff5ff642300 R15: 0000000000022000