INFO: task syz.1.57:5671 blocked for more than 143 seconds.
Not tainted 6.11.0-rc6-syzkaller-00075-gad618736883b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.57 state:D stack:24864 pid:5671 tgid:5667 ppid:5219 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
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:256
xfs_fs_goingdown+0xa9/0x160 fs/xfs/xfs_fsops.c:446
xfs_file_ioctl+0x12d7/0x19e0 fs/xfs/xfs_ioctl.c:1473
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl+0xfc/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: 0033:0x7fd89f57cef9
RSP: 002b:00007fd8a034f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fd89f736058 RCX: 00007fd89f57cef9
RDX: 0000000020000080 RSI: 000000008004587d RDI: 000000000000000c
RBP: 00007fd89f5ef01e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fd89f736058 R15: 00007fff814a6a78
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6626
2 locks held by kworker/u8:6/1068:
3 locks held by kworker/u8:9/2496:
#0: ffff88802f54e148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff88802f54e148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc90009807d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc90009807d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffffffff8fa798c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4194
2 locks held by getty/4976:
#0: ffff8880301aa0a0 (&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+0x6ac/0x1e00 drivers/tty/n_tty.c:2211
5 locks held by syz.1.57/5671:
#0: ffff888022d446b0 (&bdev->bd_fsfreeze_mutex){+.+.}-{3:3}, at: bdev_freeze+0x2a/0x220 block/bdev.c:247
#1: ffff88806151c420 (sb_writers#12){++++}-{0:0}, at: sb_wait_write fs/super.c:1896 [inline]
#1: ffff88806151c420 (sb_writers#12){++++}-{0:0}, at: freeze_super+0x4e9/0xee0 fs/super.c:2085
#2: ffff88806151c0e0 (&type->s_umount_key#50){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#2: ffff88806151c0e0 (&type->s_umount_key#50){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#2: ffff88806151c0e0 (&type->s_umount_key#50){++++}-{3:3}, at: freeze_super+0x4f1/0xee0 fs/super.c:2086
#3: ffff88806151c518 (sb_pagefaults#2){++++}-{0:0}, at: sb_wait_write fs/super.c:1896 [inline]
#3: ffff88806151c518 (sb_pagefaults#2){++++}-{0:0}, at: freeze_super+0x519/0xee0 fs/super.c:2090
#4: ffff88806151c610 (sb_internal#2){++++}-{0:0}, at: sb_wait_write fs/super.c:1896 [inline]
#4: ffff88806151c610 (sb_internal#2){++++}-{0:0}, at: freeze_super+0x7cc/0xee0 fs/super.c:2104
1 lock held by syz.1.120/6422:
#0: ffff88806151c0e0 (&type->s_umount_key#50){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88806151c0e0 (&type->s_umount_key#50){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
5 locks held by syz.0.123/6438:
#0: ffff888022d43b30 (&bdev->bd_fsfreeze_mutex){+.+.}-{3:3}, at: bdev_freeze+0x2a/0x220 block/bdev.c:247
#1: ffff88806ca62420 (sb_writers#12){++++}-{0:0}, at: sb_wait_write fs/super.c:1896 [inline]
#1: ffff88806ca62420 (sb_writers#12){++++}-{0:0}, at: freeze_super+0x4e9/0xee0 fs/super.c:2085
#2: ffff88806ca620e0 (&type->s_umount_key#50){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#2: ffff88806ca620e0 (&type->s_umount_key#50){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#2: ffff88806ca620e0 (&type->s_umount_key#50){++++}-{3:3}, at: freeze_super+0x4f1/0xee0 fs/super.c:2086
#3: ffff88806ca62518 (sb_pagefaults#2){++++}-{0:0}, at: sb_wait_write fs/super.c:1896 [inline]
#3: ffff88806ca62518 (sb_pagefaults#2){++++}-{0:0}, at: freeze_super+0x519/0xee0 fs/super.c:2090
#4: ffff88806ca62610 (sb_internal#2){++++}-{0:0}, at: sb_wait_write fs/super.c:1896 [inline]
#4: ffff88806ca62610 (sb_internal#2){++++}-{0:0}, at: freeze_super+0x7cc/0xee0 fs/super.c:2104
1 lock held by syz.0.176/6950:
#0: ffff88806ca620e0 (&type->s_umount_key#50){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88806ca620e0 (&type->s_umount_key#50){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz.1.206/7163:
#0: ffff88806151c0e0 (&type->s_umount_key#50){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88806151c0e0 (&type->s_umount_key#50){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz.4.217/7332:
#0: ffff88806151c0e0 (&type->s_umount_key#50){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88806151c0e0 (&type->s_umount_key#50){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz.0.235/7506:
#0: ffff88806ca620e0 (&type->s_umount_key#50){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88806ca620e0 (&type->s_umount_key#50){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz.1.256/7708:
#0: ffff88806151c0e0 (&type->s_umount_key#50){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88806151c0e0 (&type->s_umount_key#50){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
2 locks held by syz-executor/7897:
#0: ffffffff8fa798c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fa798c8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6644
#1: ffffffff8e73d6f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:328 [inline]
#1: ffffffff8e73d6f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:958
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc6-syzkaller-00075-gad618736883b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
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: 2521 Comm: kworker/u8:11 Not tainted 6.11.0-rc6-syzkaller-00075-gad618736883b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: bat_events batadv_nc_worker
RIP: 0010:__lock_acquire+0x2d8/0x2040 kernel/locking/lockdep.c:5068
Code: d4 ea 8b 48 c7 c6 40 fc ea 8b e8 b3 da e5 ff 90 0f 0b 90 90 90 45 31 f6 e9 3b 11 00 00 48 89 bc 24 88 00 00 00 48 8b 44 24 30 <4c> 8d 88 e0 0a 00 00 83 fa 31 4c 89 0c 24 0f 83 e2 19 00 00 48 8d
RSP: 0018:ffffc900099078f0 EFLAGS: 00000046
RAX: ffff88802ee3bc00 RBX: 1ffff11005dc78e5 RCX: ffffffff9a0fd903
RDX: 0000000000000002 RSI: dffffc0000000000 RDI: 0000000000000021
RBP: ffff88802ee3c6d8 R08: 0000000000000021 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1fee86e R12: ffff88802ee3bc00
R13: ffff88802ee3c728 R14: 0000000000000000 R15: ffffffff8e738320
FS: 0000000000000000(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff8b1ac780 CR3: 000000002a6e8000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759
rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
rcu_read_lock include/linux/rcupdate.h:838 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0xec/0x610 net/batman-adv/network-coding.c:719
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd10 kernel/workqueue.c:3389
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