INFO: task syz.3.310:5675 blocked for more than 144 seconds.
Not tainted 5.15.189-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.310 state:D stack:25536 pid: 5675 ppid: 4195 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5030 [inline]
__schedule+0x11b8/0x43b0 kernel/sched/core.c:6376
schedule+0x11b/0x1e0 kernel/sched/core.c:6459
rwsem_down_write_slowpath+0xc46/0x11f0 kernel/locking/rwsem.c:1165
f2fs_balance_fs+0x47d/0x660 fs/f2fs/segment.c:528
f2fs_setattr+0xd9e/0x1140 fs/f2fs/file.c:1013
notify_change+0xbcd/0xee0 fs/attr.c:505
do_truncate+0x197/0x220 fs/open.c:65
do_sys_ftruncate+0x31b/0x3d0 fs/open.c:193
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f7e1937a9a9
RSP: 002b:00007f7e171e2038 EFLAGS: 00000246 ORIG_RAX: 000000000000004d
RAX: ffffffffffffffda RBX: 00007f7e195a1fa0 RCX: 00007f7e1937a9a9
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000009
RBP: 00007f7e193fcd69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f7e195a1fa0 R15: 00007ffecae11918
Showing all locks held in the system:
3 locks held by kworker/0:0/7:
5 locks held by kworker/u4:0/9:
3 locks held by kworker/1:1/23:
#0: ffff888016870938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x760/0x1000 kernel/workqueue.c:-1
#1: ffffc90000ddfd00 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x7a3/0x1000 kernel/workqueue.c:2285
#2: ffffffff8d235f48 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:74
1 lock held by khungtaskd/27:
#0: ffffffff8c11c360 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
4 locks held by kworker/u4:2/154:
#0: ffff888143990138 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x760/0x1000 kernel/workqueue.c:-1
#1: ffffc90002077d00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x7a3/0x1000 kernel/workqueue.c:2285
#2: ffff88807936c0e0 (&type->s_umount_key#71){++++}-{3:3}, at: trylock_super+0x1c/0xf0 fs/super.c:418
#3: ffff88807af4d1b0 (&sbi->gc_lock){+.+.}-{3:3}, at: f2fs_balance_fs+0x47d/0x660 fs/f2fs/segment.c:528
1 lock held by dhcpcd/3854:
#0: ffffffff8d235f48 (rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x258/0x1a70 net/ipv4/devinet.c:1077
2 locks held by getty/3955:
#0: ffff88802c4c5098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc900025ce2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x5ba/0x1a30 drivers/tty/n_tty.c:2158
3 locks held by kworker/1:7/4250:
#0: ffff88802aea6538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x760/0x1000 kernel/workqueue.c:-1
#1: ffffc900032efd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7a3/0x1000 kernel/workqueue.c:2285
#2: ffffffff8d235f48 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xc4/0x1520 net/ipv6/addrconf.c:4111
3 locks held by kworker/u4:8/4406:
#0: ffff888016879138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x760/0x1000 kernel/workqueue.c:-1
#1: ffffc9000356fd00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x7a3/0x1000 kernel/workqueue.c:2285
#2: ffffffff8d235f48 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xa/0x50 net/core/link_watch.c:251
3 locks held by kworker/u4:10/4408:
3 locks held by kworker/0:8/4512:
#0: ffff88802aea6538 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x760/0x1000 kernel/workqueue.c:-1
#1: ffffc900033ffd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7a3/0x1000 kernel/workqueue.c:2285
#2: ffffffff8d235f48 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xc4/0x1520 net/ipv6/addrconf.c:4111
3 locks held by kworker/0:10/5010:
3 locks held by syz.3.310/5675:
#0: ffff88807936c460 (sb_writers#21){.+.+}-{0:0}, at: do_sys_ftruncate+0x284/0x3d0 fs/open.c:190
#1: ffff888062ec8ad0 (&sb->s_type->i_mutex_key#25){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline]
#1: ffff888062ec8ad0 (&sb->s_type->i_mutex_key#25){+.+.}-{3:3}, at: do_truncate+0x183/0x220 fs/open.c:63
#2: ffff88807af4d1b0 (&sbi->gc_lock){+.+.}-{3:3}, at: f2fs_balance_fs+0x47d/0x660 fs/f2fs/segment.c:528
6 locks held by syz.3.310/5680:
3 locks held by kworker/0:17/5775:
3 locks held by kworker/0:19/5777:
1 lock held by syz-executor/6328:
#0: ffffffff8d235f48 (rtnl_mutex){+.+.}-{3:3}, at: netdev_wait_allrefs net/core/dev.c:10574 [inline]
#0: ffffffff8d235f48 (rtnl_mutex){+.+.}-{3:3}, at: netdev_run_todo+0x56f/0xa40 net/core/dev.c:10681
1 lock held by syz-executor/6543:
#0: ffffffff8d235f48 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
#0: ffffffff8d235f48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x974/0xe60 net/core/rtnetlink.c:5647
1 lock held by syz-executor/6583:
#0: ffffffff8d235f48 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
#0: ffffffff8d235f48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x974/0xe60 net/core/rtnetlink.c:5647
1 lock held by syz-executor/6733:
#0: ffffffff8d235f48 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
#0: ffffffff8d235f48 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x974/0xe60 net/core/rtnetlink.c:5647
2 locks held by syz.0.467/6825:
#0: ffffffff8d292b10 (cb_lock){++++}-{3:3}, at: genl_rcv+0x15/0x40 net/netlink/genetlink.c:802
#1: ffffffff8d235f48 (rtnl_mutex){+.+.}-{3:3}, at: nl80211_pre_doit+0x28/0x540 net/wireless/nl80211.c:14969
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106
nmi_cpu_backtrace+0x397/0x3d0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x163/0x280 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
watchdog+0xe0f/0xe50 kernel/hung_task.c:369
kthread+0x436/0x520 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4408 Comm: kworker/u4:10 Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: bat_events batadv_nc_worker
RIP: 0010:psi_flags_change kernel/sched/psi.c:787 [inline]
RIP: 0010:psi_task_change+0x8f/0x340 kernel/sched/psi.c:811
Code: 00 00 4c 8d ad f8 12 00 00 4c 89 eb 48 c1 eb 03 48 b8 00 00 00 00 00 fc ff df 0f b6 04 03 84 c0 0f 85 23 02 00 00 45 8b 45 00 <44> 89 c0 f7 d0 44 89 c1 23 4c 24 08 44 8b 34 24 44 21 f0 09 c8 74
RSP: 0018:ffffc900039ffaf8 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 1ffff1100418125f RCX: dffffc0000000000
RDX: 0000000000000004 RSI: 00000000000010ca RDI: ffff888020c08000
RBP: ffff888020c08000 R08: 0000000000000000 R09: ffffffff8eecc058
R10: ffffffff8eecc050 R11: ffffffff8eecc043 R12: ffff888020c08048
R13: ffff888020c092f8 R14: dffffc0000000000 R15: 1ffff11004181009
FS: 0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557d9255c8 CR3: 0000000029abc000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
psi_enqueue kernel/sched/stats.h:102 [inline]
enqueue_task+0x26d/0x2b0 kernel/sched/core.c:1973
activate_task kernel/sched/core.c:2005 [inline]
ttwu_do_activate+0x1b5/0x380 kernel/sched/core.c:3614
ttwu_queue kernel/sched/core.c:3823 [inline]
try_to_wake_up+0x618/0x1050 kernel/sched/core.c:4146
wake_up_worker kernel/workqueue.c:859 [inline]
process_one_work+0x69c/0x1000 kernel/workqueue.c:2273
worker_thread+0xaa8/0x12a0 kernel/workqueue.c:2457
kthread+0x436/0x520 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287