INFO: task syz.3.78:5864 blocked for more than 143 seconds.
Not tainted 6.12.0-rc1-next-20241003-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.78 state:D stack:25488 pid:5864 tgid:5850 ppid:5580 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5315 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6675
__schedule_loop kernel/sched/core.c:6752 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6767
xfs_ail_push_all_sync+0x236/0x310 fs/xfs/xfs_trans_ail.c:726
xfs_log_quiesce+0xdf/0x5b0 fs/xfs/xfs_log.c:1018
xfs_fs_freeze+0x8d/0x1a0 fs/xfs/xfs_super.c:936
freeze_super+0x81b/0xee0 fs/super.c:2107
fs_bdev_freeze+0x1ac/0x320 fs/super.c:1484
bdev_freeze+0xd6/0x220 block/bdev.c:257
xfs_fs_goingdown+0xa9/0x160 fs/xfs/xfs_fsops.c:446
xfs_file_ioctl+0x12e5/0x1a30 fs/xfs/xfs_ioctl.c:1343
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl+0xf9/0x170 fs/ioctl.c:893
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4ce257dff9
RSP: 002b:00007f4ce3326038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f4ce2736130 RCX: 00007f4ce257dff9
RDX: 0000000020000080 RSI: 000000008004587d RDI: 000000000000000a
RBP: 00007f4ce25f0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f4ce2736130 R15: 00007ffe85796678
Showing all locks held in the system:
4 locks held by kworker/u8:0/11:
#0: ffff88801baed948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88801baed948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc90000107d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc90000107d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2: ffffffff8fcc87d0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:580
#3: ffffffff8fcd52c8 (rtnl_mutex){+.+.}-{3:3}, at: ieee80211_unregister_hw+0x55/0x2c0 net/mac80211/main.c:1662
1 lock held by khungtaskd/30:
#0: ffffffff8e937de0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e937de0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e937de0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6720
3 locks held by kworker/u8:10/3052:
#0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc90009d97d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc90009d97d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2: ffffffff8fcd52c8 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276
2 locks held by getty/4984:
#0: ffff88802e3750a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
5 locks held by syz.3.78/5864:
#0: ffff888148c86930 (&bdev->bd_fsfreeze_mutex){+.+.}-{3:3}, at: bdev_freeze+0x2a/0x220 block/bdev.c:248
#1:
ffff88804ca18420 (sb_writers#17){++++}-{0:0}
, at: sb_wait_write fs/super.c:1896 [inline]
, at: freeze_super+0x4e9/0xee0 fs/super.c:2085
#2: ffff88804ca180e0 (&type->s_umount_key#59){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#2: ffff88804ca180e0 (&type->s_umount_key#59){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#2: ffff88804ca180e0 (&type->s_umount_key#59){+.+.}-{3:3}, at: freeze_super+0x4f1/0xee0 fs/super.c:2086
#3: ffff88804ca18518 (sb_pagefaults#2){+.+.}-{0:0}, at: sb_wait_write fs/super.c:1896 [inline]
#3: ffff88804ca18518 (sb_pagefaults#2){+.+.}-{0:0}, at: freeze_super+0x519/0xee0 fs/super.c:2090
#4: ffff88804ca18610 (sb_internal#3){++++}-{0:0}, at: sb_wait_write fs/super.c:1896 [inline]
#4: ffff88804ca18610 (sb_internal#3){++++}-{0:0}, at: freeze_super+0x7cc/0xee0 fs/super.c:2104
5 locks held by syz.1.123/6072:
#0: ffff888148c85230 (&bdev->bd_fsfreeze_mutex){+.+.}-{3:3}, at: bdev_freeze+0x2a/0x220 block/bdev.c:248
#1: ffff88806e5fa420 (sb_writers#17){++++}-{0:0}, at: sb_wait_write fs/super.c:1896 [inline]
#1: ffff88806e5fa420 (sb_writers#17){++++}-{0:0}, at: freeze_super+0x4e9/0xee0 fs/super.c:2085
#2: ffff88806e5fa0e0 (&type->s_umount_key#59){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#2: ffff88806e5fa0e0 (&type->s_umount_key#59){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#2: ffff88806e5fa0e0 (&type->s_umount_key#59){+.+.}-{3:3}, at: freeze_super+0x4f1/0xee0 fs/super.c:2086
#3: ffff88806e5fa518 (sb_pagefaults#2){+.+.}-{0:0}, at: sb_wait_write fs/super.c:1896 [inline]
#3: ffff88806e5fa518 (sb_pagefaults#2){+.+.}-{0:0}, at: freeze_super+0x519/0xee0 fs/super.c:2090
#4: ffff88806e5fa610 (sb_internal#3){++++}-{0:0}, at: sb_wait_write fs/super.c:1896 [inline]
#4: ffff88806e5fa610 (sb_internal#3){++++}-{0:0}, at: freeze_super+0x7cc/0xee0 fs/super.c:2104
3 locks held by syz-executor/6637:
#0: ffff88806b6d0d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close net/bluetooth/hci_core.c:481 [inline]
#0: ffff88806b6d0d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_unregister_dev+0x203/0x510 net/bluetooth/hci_core.c:2698
#1: ffff88806b6d0078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x572/0x11a0 net/bluetooth/hci_sync.c:5183
#2: ffffffff8e93d378 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline]
#2: ffffffff8e93d378 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:976
3 locks held by kworker/u8:11/6740:
#0: ffff8880b863eb18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xb0/0x140 kernel/sched/core.c:601
#1: ffff8880b8628948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x3a7/0x770 kernel/sched/psi.c:977
#2: ffff8880b863eb18 (&rq->__lock){-.-.}-{2:2}, at: wiphy_lock include/net/cfg80211.h:6014 [inline]
#2: ffff8880b863eb18 (&rq->__lock){-.-.}-{2:2}, at: cfg80211_wiphy_work+0xd9/0x490 net/wireless/core.c:426
2 locks held by syz-executor/6754:
#0: ffffffff8fcd52c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fcd52c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6643
#1: ffffffff8e93d378 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline]
#1: ffffffff8e93d378 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:976
1 lock held by syz-executor/6768:
#0: ffffffff8fcd52c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fcd52c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6643
1 lock held by syz-executor/6780:
#0: ffffffff8fcd52c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fcd52c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6643
2 locks held by syz-executor/6796:
#0: ffffffff8fcc87d0 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:490
#1: ffffffff8fcd52c8 (rtnl_mutex){+.+.}-{3:3}, at: ip_tunnel_init_net+0x20e/0x720 net/ipv4/ip_tunnel.c:1159
3 locks held by kworker/u8:15/6800:
#0: ffff88814ba65948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88814ba65948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc900033cfd00 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc900033cfd00 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2: ffffffff8fcd52c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x19/0x30 net/ipv6/addrconf.c:4736
2 locks held by syz-executor/6802:
#0: ffffffff8fcc87d0 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x328/0x570 net/core/net_namespace.c:490
#1: ffffffff8fcd52c8 (rtnl_mutex){+.+.}-{3:3}, at: ip_tunnel_init_net+0x20e/0x720 net/ipv4/ip_tunnel.c:1159
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc1-next-20241003-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xff4/0x1040 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 5863 Comm: xfsaild/loop3 Not tainted 6.12.0-rc1-next-20241003-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:debug_smp_processor_id+0x12/0x20 lib/smp_processor_id.c:60
Code: 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 c7 c7 c0 0b 61 8c 48 c7 c6 00 0c 61 8c 1c 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90002f1f618 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: ffffffff8c610c00 RDI: ffffffff8c610bc0
RBP: ffffc90002f1f6d8 R08: ffff88801e71da07 R09: 1ffff11003ce3b40
R10: dffffc0000000000 R11: ffffed1003ce3b41 R12: 1ffff920005e3ec8
R13: ffff88801e71da00 R14: 1ffff11003ce3b40 R15: ffff8880b863f6d8
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056019c8e7c90 CR3: 000000002cdce000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
resched_curr+0x163/0x3c0 kernel/sched/core.c:1086
update_curr+0x56a/0xd80 kernel/sched/fair.c:1245
dequeue_entity+0x28/0x1a70 kernel/sched/fair.c:5480
dequeue_entities+0x234/0xfa0 kernel/sched/fair.c:7104
dequeue_task_fair+0xdc/0x1e0 kernel/sched/fair.c:7193
block_task kernel/sched/core.c:2085 [inline]
__schedule+0x5ec/0x4b30 kernel/sched/core.c:6624
__schedule_loop kernel/sched/core.c:6752 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6767
schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99
xfsaild+0x37e/0x2e00 fs/xfs/xfs_trans_ail.c:699
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244