INFO: task syz.3.790:6769 blocked for more than 143 seconds.
Not tainted 6.1.96-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.790 state:D stack:23800 pid:6769 ppid:6260 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5245 [inline]
__schedule+0x142d/0x4550 kernel/sched/core.c:6558
schedule+0xbf/0x180 kernel/sched/core.c:6634
rwsem_down_write_slowpath+0xea1/0x14b0 kernel/locking/rwsem.c:1189
f2fs_down_write fs/f2fs/f2fs.h:2176 [inline]
f2fs_balance_fs+0x4fb/0x6c0 fs/f2fs/segment.c:428
f2fs_write_single_data_page+0x1336/0x1f90 fs/f2fs/data.c:2884
f2fs_write_cache_pages fs/f2fs/data.c:3143 [inline]
__f2fs_write_data_pages fs/f2fs/data.c:3299 [inline]
f2fs_write_data_pages+0x1ceb/0x3a70 fs/f2fs/data.c:3326
do_writepages+0x3a2/0x670 mm/page-writeback.c:2469
filemap_fdatawrite_wbc+0x121/0x180 mm/filemap.c:388
__filemap_fdatawrite_range mm/filemap.c:421 [inline]
file_write_and_wait_range+0x1ca/0x2b0 mm/filemap.c:774
f2fs_do_sync_file+0x69d/0x1c00 fs/f2fs/file.c:275
generic_write_sync include/linux/fs.h:2957 [inline]
f2fs_file_write_iter+0x720/0x2980 fs/f2fs/file.c:4792
call_write_iter include/linux/fs.h:2265 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x7ae/0xba0 fs/read_write.c:584
ksys_write+0x19c/0x2c0 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f3cbc175b99
RSP: 002b:00007f3cbcf36048 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f3cbc303fa0 RCX: 00007f3cbc175b99
RDX: 0000000000200600 RSI: 0000000020000400 RDI: 0000000000000005
RBP: 00007f3cbc1f677e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f3cbc303fa0 R15: 00007ffc45141378
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d12ae90 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xe30 kernel/rcu/tasks.h:516
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8d12b690 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xe30 kernel/rcu/tasks.h:516
1 lock held by khungtaskd/28:
#0: ffffffff8d12acc0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
#0: ffffffff8d12acc0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline]
#0: ffffffff8d12acc0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x290 kernel/locking/lockdep.c:6494
2 locks held by getty/3312:
#0: ffff888028bc4098 (&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+0x6a7/0x1db0 drivers/tty/n_tty.c:2198
6 locks held by kworker/0:10/4054:
4 locks held by kworker/u4:12/4987:
#0: ffff8881432f8938 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267
#1: ffffc900130dfd20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267
#2: ffff8880737940e0 (&type->s_umount_key#51){++++}-{3:3}, at: trylock_super+0x1b/0xf0 fs/super.c:415
#3: ffff888023dbd140 (&sbi->gc_lock){+.+.}-{3:3}, at: f2fs_down_write fs/f2fs/f2fs.h:2176 [inline]
#3: ffff888023dbd140 (&sbi->gc_lock){+.+.}-{3:3}, at: f2fs_balance_fs+0x4fb/0x6c0 fs/f2fs/segment.c:428
4 locks held by syz.3.790/6769:
#0: ffff888078cb34e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x2ba/0x360 fs/file.c:1062
#1: ffff888073794460 (sb_writers#13){.+.+}-{0:0}, at: vfs_write+0x269/0xba0 fs/read_write.c:580
#2: ffff888023dbc128 (&sbi->writepages){+.+.}-{3:3}, at: __f2fs_write_data_pages fs/f2fs/data.c:3294 [inline]
#2: ffff888023dbc128 (&sbi->writepages){+.+.}-{3:3}, at: f2fs_write_data_pages+0x33f3/0x3a70 fs/f2fs/data.c:3326
#3: ffff888023dbd140 (&sbi->gc_lock){+.+.}-{3:3}, at: f2fs_down_write fs/f2fs/f2fs.h:2176 [inline]
#3: ffff888023dbd140 (&sbi->gc_lock){+.+.}-{3:3}, at: f2fs_balance_fs+0x4fb/0x6c0 fs/f2fs/segment.c:428
7 locks held by syz.3.790/6827:
2 locks held by syz.0.1393/9370:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.1.96-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x4e1/0x560 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1b0/0x3f0 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+0xf88/0xfd0 kernel/hung_task.c:377
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 11 Comm: kworker/u4:1 Not tainted 6.1.96-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Workqueue: bat_events batadv_nc_worker
RIP: 0010:__lock_acquire+0xd8f/0x1f80 kernel/locking/lockdep.c:5033
Code: 89 7d 00 48 8b 44 24 28 0f b6 04 38 84 c0 0f 85 36 0b 00 00 41 8b 1c 24 48 85 db 74 58 83 fb 31 0f 83 0e 10 00 00 48 8d 04 9b <48> 8b 0c 24 48 8d 5c c1 f8 48 89 d8 48 c1 e8 03 0f b6 04 38 84 c0
RSP: 0018:ffffc90000107900 EFLAGS: 00000087
RAX: 000000000000000a RBX: 0000000000000002 RCX: ffffffff816a79ef
RDX: 0000000000000000 RSI: 0000000000000008 RDI: dffffc0000000000
RBP: ffff88813fe8c6b0 R08: dffffc0000000000 R09: fffffbfff209385f
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88813fe8c658
R13: 0000000000000000 R14: ffff88813fe8c6d0 R15: 9d59fe4196622efd
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555562c5608 CR3: 0000000074cf6000 CR4: 00000000003506f0
Call Trace:
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
_raw_spin_lock_bh+0x31/0x40 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+0x361/0x610 net/batman-adv/network-coding.c:722
process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308