INFO: task syz-executor.4:24604 blocked for more than 143 seconds.
Not tainted 6.1.0-rc5-syzkaller-00307-gfe24a97cf254 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D
stack:26656 pid:24604 ppid:3687 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5191 [inline]
__schedule+0xae9/0x53f0 kernel/sched/core.c:6503
schedule+0xde/0x1b0 kernel/sched/core.c:6579
schedule_timeout+0x1df/0x2a0 kernel/time/timer.c:1911
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x1ce/0x5c0 kernel/sched/completion.c:106
f2fs_issue_checkpoint+0x35c/0x460 fs/f2fs/checkpoint.c:1882
f2fs_sync_fs+0x244/0x4c0 fs/f2fs/super.c:1656
sync_fs_one_sb fs/sync.c:84 [inline]
sync_fs_one_sb+0x10b/0x150 fs/sync.c:80
iterate_supers+0x140/0x2a0 fs/super.c:724
ksys_sync+0xac/0x150 fs/sync.c:104
__do_sys_sync+0xe/0x20 fs/sync.c:113
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fadec68b639
RSP: 002b:00007faded362168 EFLAGS: 00000246
ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007fadec7abf80 RCX: 00007fadec68b639
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fadec6e6ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd76b419bf R14: 00007faded362300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0:
ffffffff8c58f0f0
(
rcu_tasks.tasks_gp_mutex
){+.+.}-{3:3}
, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8c58edf0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
#0: ffffffff8c58fc40
(
rcu_read_lock
){....}-{1:2}
, at: debug_show_all_locks+0x57/0x264 kernel/locking/lockdep.c:6494
2 locks held by getty/3309:
#0:
ffff88814b4a8098
(
&tty->ldisc_sem
){++++}-{0:0}
, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244
#1:
ffffc900031362f0
(
&ldata->atomic_read_lock
){+.+.}-{3:3}
, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177
3 locks held by kworker/1:4/3730:
#0:
ffff888012064d38
((wq_completion)events){+.+.}-{0:0}
, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
, at: set_work_data kernel/workqueue.c:636 [inline]
, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
#1: ffffc9000475fda8
(
(work_completion)(&data->fib_event_work)
){+.+.}-{0:0}
, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
#2:
ffff888089eb0240
(
&data->fib_lock
){+.+.}-{3:3}
, at: nsim_fib_event_work+0x1d5/0x24a0 drivers/net/netdevsim/fib.c:1489
1 lock held by syz-executor.4/24604:
#0:
ffff88808d93c0e0
(
&type->s_umount_key
#81
){++++}-{3:3}
, at: iterate_supers+0xdf/0x2a0 fs/super.c:722
5 locks held by f2fs_ckpt-7:4/24616:
1 lock held by syz-executor.4/24725:
#0:
ffff88808d93c0e0
(&type->s_umount_key
#81
){++++}-{3:3}
, at: iterate_supers+0xdf/0x2a0 fs/super.c:722
1 lock held by syz-executor.4/24726:
#0:
ffff88808d93c0e0 (&type->s_umount_key#81){++++}-{3:3}, at: iterate_supers+0xdf/0x2a0 fs/super.c:722
2 locks held by syz-executor.4/24800:
#0: ffff88808d93c0e0
(
&type->s_umount_key
#81
){++++}-{3:3}
, at: iterate_supers+0xdf/0x2a0 fs/super.c:722
#1:
ffff88814716e7d0
(
&bdi->wb_switch_rwsem
){+.+.}-{3:3}
, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:362 [inline]
, at: sync_inodes_sb+0x190/0x9e0 fs/fs-writeback.c:2704
2 locks held by syz-executor.4/24801:
#0:
ffff88808d93c0e0
(
&type->s_umount_key
#81
){++++}-{3:3}
, at: iterate_supers+0xdf/0x2a0 fs/super.c:722
#1:
ffff88814716e7d0
(
&bdi->wb_switch_rwsem
){+.+.}-{3:3}
, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:362 [inline]
, at: sync_inodes_sb+0x190/0x9e0 fs/fs-writeback.c:2704
2 locks held by syz-executor.4/24802:
#0:
ffff88808d93c0e0
(
&type->s_umount_key
#81
){++++}-{3:3}
, at: iterate_supers+0xdf/0x2a0 fs/super.c:722
#1: ffff88814716e7d0
(&bdi->wb_switch_rwsem
){+.+.}-{3:3}
, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:362 [inline]
, at: sync_inodes_sb+0x190/0x9e0 fs/fs-writeback.c:2704
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.1.0-rc5-syzkaller-00307-gfe24a97cf254 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x24/0x18a lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x333/0x3c0 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+0xc75/0xfc0 kernel/hung_task.c:377
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 3887 Comm: kworker/u4:7 Not tainted 6.1.0-rc5-syzkaller-00307-gfe24a97cf254 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Workqueue: bat_events batadv_nc_worker
RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:29 [inline]
RIP: 0010:rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:121 [inline]
RIP: 0010:rcu_is_watching+0x5c/0xb0 kernel/rcu/tree.c:719
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 75 54 48 03 1c ed e0 f8 01 8c 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 0f b6 14 02 <48> 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 1c 8b 03 c1 e8 02
RSP: 0018:ffffc9000500fc68 EFLAGS: 00000212
RAX: dffffc0000000000 RBX: ffff8880b9a35c88 RCX: 802d6f310883a9e3
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffffff8c01f8e0
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff91110a47
R10: fffffbfff2222148 R11: 0000000000000000 R12: 0000000000000002
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000237
FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f540a1a8000 CR3: 00000000911ca000 CR4: 0000000000350ef0
Call Trace:
rcu_read_lock include/linux/rcupdate.h:739 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0x136/0xfa0 net/batman-adv/network-coding.c:719
process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289
worker_thread+0x669/0x1090 kernel/workqueue.c:2436
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306