INFO: task syz.4.801:8028 blocked for more than 143 seconds.
Not tainted 5.15.167-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.801 state:D stack:25880 pid: 8028 ppid: 7693 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5027 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6373
schedule+0x11b/0x1f0 kernel/sched/core.c:6456
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6515
rwsem_down_read_slowpath+0x605/0xb40 kernel/locking/rwsem.c:1055
__down_read_common kernel/locking/rwsem.c:1239 [inline]
__down_read kernel/locking/rwsem.c:1252 [inline]
down_read+0x9a/0x2e0 kernel/locking/rwsem.c:1500
iterate_supers+0xac/0x1e0 fs/super.c:714
ksys_sync+0xb9/0x1c0 fs/sync.c:102
__do_sys_sync+0xa/0x10 fs/sync.c:113
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f4da0d16ff9
RSP: 002b:00007f4d9f16e038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f4da0ecf058 RCX: 00007f4da0d16ff9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f4da0d89296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f4da0ecf058 R15: 00007ffe7cfbd318
Showing all locks held in the system:
3 locks held by kworker/1:0/21:
#0: ffff888017070938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc90000db7d20 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
#2: ffffffff8da31d88 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:74
1 lock held by khungtaskd/27:
#0: ffffffff8c91fc60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
5 locks held by kworker/u4:3/443:
#0: ffff8880171d5938 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc90002f37d20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
#2: ffffffff8da261d0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xf1/0xb60 net/core/net_namespace.c:561
#3: ffffffff8da31d88 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock_unregistering net/core/dev.c:11580 [inline]
#3: ffffffff8da31d88 (rtnl_mutex){+.+.}-{3:3}, at: default_device_exit_batch+0x1ac/0x3f0 net/core/dev.c:11618
#4: ffffffff8c924130 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x9c/0x4e0 kernel/rcu/tree.c:4039
3 locks held by kworker/u4:4/1245:
#0: ffff8880b913a318 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x26/0x140 kernel/sched/core.c:475
#1: ffff8880b9127848 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x53d/0x810 kernel/sched/psi.c:891
#2: ffff888066a84d40 (&wdev->mtx){+.+.}-{3:3}, at: sdata_lock net/mac80211/ieee80211_i.h:1033 [inline]
#2: ffff888066a84d40 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0xa0/0x1480 net/mac80211/ibss.c:1685
3 locks held by kworker/0:3/2988:
#0: ffff888017070938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc9000bb97d20 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
#2: ffff88807e3b6400 (&nsim_dev->port_list_lock#2){+.+.}-{3:3}, at: nsim_dev_trap_report_work+0x56/0xab0 drivers/net/netdevsim/dev.c:757
1 lock held by klogd/3016:
#0: ffff8880b913a318 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x26/0x140 kernel/sched/core.c:475
1 lock held by dhcpcd/3239:
#0: ffffffff8da31d88 (rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x2a5/0x1b20 net/ipv4/devinet.c:1066
2 locks held by getty/3323:
#0: ffff8880297f6098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc9000228e2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 drivers/tty/n_tty.c:2158
1 lock held by udevd/3663:
#0: ffff888020bdd118 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x14d/0xa50 block/bdev.c:817
1 lock held by udevd/3697:
#0: ffffffff8ce02368 (uuid_mutex){+.+.}-{3:3}, at: btrfs_control_ioctl+0xbe/0x210 fs/btrfs/super.c:2454
3 locks held by kworker/u4:7/4032:
#0: ffff888017079138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc90003677d20 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
#2: ffffffff8da31d88 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xa/0x50 net/core/link_watch.c:251
2 locks held by kworker/u4:8/4033:
2 locks held by kworker/0:8/4191:
#0: ffff888017072138 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc90003367d20 ((work_completion)(&rew.rew_work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
1 lock held by syz-executor/6606:
#0: ffff8880675d20e0 (&type->s_umount_key#85){++++}-{3:3}, at: deactivate_super+0xa9/0xe0 fs/super.c:365
1 lock held by syz.4.801/8028:
#0: ffff8880675d20e0 (&type->s_umount_key#85){++++}-{3:3}, at: iterate_supers+0xac/0x1e0 fs/super.c:714
1 lock held by syz.3.831/8148:
#0: ffff8880675d20e0 (&type->s_umount_key#85){++++}-{3:3}, at: iterate_supers+0xac/0x1e0 fs/super.c:714
1 lock held by syz.2.851/8237:
#0: ffff8880675d20e0 (&type->s_umount_key#85){++++}-{3:3}, at: iterate_supers+0xac/0x1e0 fs/super.c:714
1 lock held by syz.0.855/8266:
#0: ffff8880675d20e0 (&type->s_umount_key#85){++++}-{3:3}, at: iterate_supers+0xac/0x1e0 fs/super.c:714
1 lock held by syz.1.858/8295:
#0: ffff8880675d20e0 (&type->s_umount_key#85){++++}-{3:3}, at: iterate_supers+0xac/0x1e0 fs/super.c:714
1 lock held by syz.1.1091/9339:
#0: ffff8880675d20e0 (&type->s_umount_key#85){++++}-{3:3}, at: iterate_supers+0xac/0x1e0 fs/super.c:714
1 lock held by syz.1.1091/9370:
#0: ffff8880675d20e0 (&type->s_umount_key#85){++++}-{3:3}, at: iterate_supers+0xac/0x1e0 fs/super.c:714
2 locks held by syz-executor/9647:
#0: ffff888020bbc118 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0xfb/0x790 block/bdev.c:912
#1: ffff8881477b5468 (&lo->lo_mutex){+.+.}-{3:3}, at: __loop_clr_fd+0xa9/0xbe0 drivers/block/loop.c:1365
1 lock held by syz-executor/9959:
#0: ffffffff8c924228 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline]
#0: ffffffff8c924228 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x280/0x740 kernel/rcu/tree_exp.h:845
7 locks held by syz-executor/10227:
#0: ffff88807f25a460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x29a/0xe50 fs/read_write.c:590
#1: ffff888064e01c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1e7/0x4f0 fs/kernfs/file.c:287
#2: ffff888023234da0 (kn->active#232){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x20b/0x4f0 fs/kernfs/file.c:288
#3: ffffffff8d373888 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xf1/0x470 drivers/net/netdevsim/bus.c:344
#4: ffff8880288dd178 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
#4: ffff8880288dd178 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1044 [inline]
#4: ffff8880288dd178 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xc2/0x7f0 drivers/base/dd.c:1259
#5: ffff88807e3b6400 (&nsim_dev->port_list_lock#2){+.+.}-{3:3}, at: nsim_dev_port_del_all drivers/net/netdevsim/dev.c:1359 [inline]
#5: ffff88807e3b6400 (&nsim_dev->port_list_lock#2){+.+.}-{3:3}, at: nsim_dev_reload_destroy+0x118/0x240 drivers/net/netdevsim/dev.c:1561
#6: ffffffff8da31d88 (rtnl_mutex){+.+.}-{3:3}, at: netdev_run_todo+0xa4f/0xc40 net/core/dev.c:10656
3 locks held by syz.2.1282/10360:
#0: ffffffff8ce02368 (uuid_mutex){+.+.}-{3:3}, at: btrfs_mount_root+0x27b/0x930 fs/btrfs/super.c:1709
#1: ffff888020bdd118 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0xfb/0x790 block/bdev.c:912
#2: ffff888020bd3468 (&lo->lo_mutex){+.+.}-{3:3}, at: lo_release+0x4d/0x1f0 drivers/block/loop.c:2070
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.167-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xe72/0xeb0 kernel/hung_task.c:295
kthread+0x3f6/0x4f0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4033 Comm: kworker/u4:8 Not tainted 5.15.167-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: phy44 ieee80211_iface_work
RIP: 0010:mark_usage kernel/locking/lockdep.c:4512 [inline]
RIP: 0010:__lock_acquire+0xc82/0x1ff0 kernel/locking/lockdep.c:4966
Code: 08 84 c0 0f 85 57 11 00 00 83 3b 00 74 1c 48 89 ef 48 8b 74 24 08 ba 06 00 00 00 e8 58 5a 00 00 31 f6 85 c0 0f 84 c5 08 00 00 <48> 89 ef 48 8b 5c 24 08 48 89 de ba 08 00 00 00 e8 39 5a 00 00 31
RSP: 0018:ffffc900036874c0 EFLAGS: 00000006
RAX: 00000000000c0026 RBX: 1ffff1100fa99171 RCX: 00000000000c0026
RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffffffff90712128
RBP: ffff88807d4c8000 R08: dffffc0000000000 R09: fffffbfff20e2426
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000003
R13: ffff88807d4c8ae8 R14: 0000000000000003 R15: ffff88807d4c8b88
FS: 0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe169b9ba8 CR3: 000000004d277000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623
local_lock_acquire+0x1d/0x70 include/linux/local_lock_internal.h:29
___slab_alloc+0x24f/0xe10 mm/slub.c:2930
__slab_alloc mm/slub.c:3095 [inline]
slab_alloc_node mm/slub.c:3186 [inline]
slab_alloc mm/slub.c:3228 [inline]
__kmalloc+0x1c9/0x300 mm/slub.c:4403
kmalloc include/linux/slab.h:596 [inline]
kzalloc include/linux/slab.h:721 [inline]
ieee802_11_parse_elems_crc+0xb3/0x1130 net/mac80211/util.c:1478
ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2240 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1609 [inline]
ieee80211_ibss_rx_queued_mgmt+0x380/0x2af0 net/mac80211/ibss.c:1643
ieee80211_iface_process_skb net/mac80211/iface.c:1441 [inline]
ieee80211_iface_work+0x78f/0xcc0 net/mac80211/iface.c:1495
process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
kthread+0x3f6/0x4f0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287