INFO: task syz.2.44:5726 blocked for more than 143 seconds.
Not tainted 6.11.0-rc3-syzkaller-00010-g6b4aa469f049 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.44 state:D stack:22096 pid:5726 tgid:5671 ppid:5214 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:721
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:1462
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: 0033:0x7f00e19799f9
RSP: 002b:00007f00e27fb038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f00e1b16058 RCX: 00007f00e19799f9
RDX: 0000000020000080 RSI: 000000008004587d RDI: 0000000000000009
RBP: 00007f00e19e78ee R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f00e1b16058 R15: 00007fffeafaaaf8
Showing all locks held in the system:
3 locks held by kworker/u8:0/11:
#0: ffff888015489148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff888015489148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc90000107d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc90000107d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffffffff8fa6fe48 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276
3 locks held by kworker/u8:1/12:
#0: ffff88802a146948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff88802a146948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc90000117d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc90000117d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffffffff8fa6fe48 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4194
1 lock held by khungtaskd/30:
#0: ffffffff8e7382e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff8e7382e0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8e7382e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6626
5 locks held by kworker/u8:4/63:
5 locks held by kworker/u8:5/130:
#0: ffff8880162e3148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff8880162e3148 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc90002d7fd00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc90002d7fd00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffffffff8fa632d0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:594
#3: ffffffff8fa6fe48 (rtnl_mutex){+.+.}-{3:3}, at: default_device_exit_batch+0xe9/0xa90 net/core/dev.c:11875
#4: ffffffff8e73d6b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:296 [inline]
#4: ffffffff8e73d6b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x381/0x830 kernel/rcu/tree_exp.h:958
1 lock held by dhcpcd/4882:
#0: ffffffff8fa6fe48 (rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x2ce/0x1bc0 net/ipv4/devinet.c:1101
2 locks held by getty/4970:
#0: ffff88802b1770a0 (&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.2.44/5726:
#0: ffff88801d945230 (&bdev->bd_fsfreeze_mutex){+.+.}-{3:3}, at: bdev_freeze+0x2a/0x220 block/bdev.c:247
#1: ffff888020902420 (sb_writers#13){++++}-{0:0}, at: sb_wait_write fs/super.c:1896 [inline]
#1: ffff888020902420 (sb_writers#13){++++}-{0:0}, at: freeze_super+0x4e9/0xee0 fs/super.c:2085
#2: ffff8880209020e0 (&type->s_umount_key#53){++++}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#2: ffff8880209020e0 (&type->s_umount_key#53){++++}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#2: ffff8880209020e0 (&type->s_umount_key#53){++++}-{3:3}, at: freeze_super+0x4f1/0xee0 fs/super.c:2086
#3: ffff888020902518 (sb_pagefaults#2){++++}-{0:0}, at: sb_wait_write fs/super.c:1896 [inline]
#3: ffff888020902518 (sb_pagefaults#2){++++}-{0:0}, at: freeze_super+0x519/0xee0 fs/super.c:2090
#4: ffff888020902610 (sb_internal#3){++++}-{0:0}, at: sb_wait_write fs/super.c:1896 [inline]
#4: ffff888020902610 (sb_internal#3){++++}-{0:0}, at: freeze_super+0x7cc/0xee0 fs/super.c:2104
1 lock held by syz.2.167/6798:
#0: ffff8880209020e0 (&type->s_umount_key#53){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff8880209020e0 (&type->s_umount_key#53){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz.1.172/6951:
#0: ffff8880209020e0 (&type->s_umount_key#53){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff8880209020e0 (&type->s_umount_key#53){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz.2.217/7384:
#0: ffff8880209020e0 (&type->s_umount_key#53){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff8880209020e0 (&type->s_umount_key#53){++++}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
1 lock held by syz-executor/7495:
#0: ffffffff8fa6fe48 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fa6fe48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6644
1 lock held by syz-executor/7611:
#0: ffffffff8fa6fe48 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fa6fe48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6644
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc3-syzkaller-00010-g6b4aa469f049 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
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+0xfee/0x1030 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: 7720 Comm: kworker/u8:9 Not tainted 6.11.0-rc3-syzkaller-00010-g6b4aa469f049 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Workqueue: bat_events batadv_nc_worker
RIP: 0010:kasan_check_range+0x1ba/0x290 mm/kasan/generic.c:189
Code: fb 48 8d 5d 07 48 85 ed 48 0f 49 dd 48 83 e3 f8 48 29 dd 74 12 41 80 3b 00 0f 85 a6 00 00 00 49 ff c3 48 ff cd 75 ee 5b 41 5c <41> 5e 41 5f 5d c3 cc cc cc cc 40 84 ed 75 5f f7 c5 00 ff 00 00 75
RSP: 0018:ffffc90003d37830 EFLAGS: 00000056
RAX: 0000000000000001 RBX: 00000000000006cb RCX: ffffffff816fcdeb
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff934f1918
RBP: 0000000000000000 R08: ffffffff934f191f R09: 1ffffffff269e323
R10: dffffc0000000000 R11: fffffbfff269e324 R12: ffff88802fdf0000
R13: ffff88802fdf0ad8 R14: dffffc0000000001 R15: fffffbfff269e324
FS: 0000000000000000(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5eb54c6440 CR3: 000000002372e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
instrument_atomic_read include/linux/instrumented.h:68 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
__lock_acquire+0xc8b/0x2040 kernel/locking/lockdep.c:5112
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
_raw_spin_lock_bh+0x35/0x50 kernel/locking/spinlock.c:178
spin_lock_bh include/linux/spinlock.h:356 [inline]
batadv_nc_purge_paths+0xe8/0x3b0 net/batman-adv/network-coding.c:442
batadv_nc_worker+0x365/0x610 net/batman-adv/network-coding.c:722
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
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