INFO: task kworker/u4:14:9715 blocked for more than 143 seconds.
Not tainted 5.15.137-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:14 state:D stack:20416 pid: 9715 ppid: 2 flags:0x00004000
Workqueue: writeback wb_workfn (flush-7:1)
Call Trace:
context_switch kernel/sched/core.c:5026 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6372
schedule+0x11b/0x1f0 kernel/sched/core.c:6455
rwsem_down_write_slowpath+0xebb/0x15c0 kernel/locking/rwsem.c:1157
__down_write_common kernel/locking/rwsem.c:1284 [inline]
__down_write kernel/locking/rwsem.c:1293 [inline]
down_write+0x164/0x170 kernel/locking/rwsem.c:1542
f2fs_balance_fs+0x4d4/0x6a0 fs/f2fs/segment.c:529
f2fs_write_inode+0x4c3/0x540 fs/f2fs/inode.c:727
write_inode fs/fs-writeback.c:1478 [inline]
__writeback_single_inode+0x644/0xe30 fs/fs-writeback.c:1688
writeback_sb_inodes+0xbce/0x1a40 fs/fs-writeback.c:1913
__writeback_inodes_wb+0x114/0x400 fs/fs-writeback.c:1984
wb_writeback+0x465/0xc50 fs/fs-writeback.c:2089
wb_check_background_flush fs/fs-writeback.c:2155 [inline]
wb_do_writeback fs/fs-writeback.c:2243 [inline]
wb_workfn+0xd07/0x1130 fs/fs-writeback.c:2271
process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
kthread+0x3f6/0x4f0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8c91f020 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3258:
#0: ffff88814b342098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc900022a32e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 drivers/tty/n_tty.c:2158
2 locks held by kworker/0:9/3646:
#0: ffff888011c72538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc9000326fd20 ((work_completion)(&rew.rew_work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
2 locks held by kworker/u4:8/5388:
#0: ffff8880b9a39718 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x26/0x140 kernel/sched/core.c:475
#1: ffff8880b9a27848 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x53d/0x810 kernel/sched/psi.c:891
4 locks held by kworker/u4:14/9715:
#0: ffff8881425f3938 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc90010827d20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
#2: ffff8880869480e0 (&type->s_umount_key#59){++++}-{3:3}, at: trylock_super+0x1b/0xf0 fs/super.c:418
#3: ffff88808361d108 (&sbi->gc_lock){+.+.}-{3:3}, at: f2fs_balance_fs+0x4d4/0x6a0 fs/f2fs/segment.c:529
5 locks held by kworker/u4:7/9816:
#0: ffff888011dc5138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc9000328fd20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
#2: ffffffff8d9cdb50 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xf1/0xb60 net/core/net_namespace.c:558
#3: ffffffff8d9d9848 (rtnl_mutex){+.+.}-{3:3}, at: sit_exit_batch_net+0xc0/0x480 net/ipv6/sit.c:1948
#4: ffffffff8c9235e8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline]
#4: ffffffff8c9235e8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x280/0x740 kernel/rcu/tree_exp.h:845
4 locks held by syz-executor.1/16686:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.137-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xe72/0xeb0 kernel/hung_task.c:295
kthread+0x3f6/0x4f0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 20772 Comm: syz-executor.1 Not tainted 5.15.137-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
RIP: 0010:unwind_next_frame+0x1/0x1fa0 arch/x86/kernel/unwind_orc.c:423
Code: 02 31 c0 5b 41 5e 41 5f c3 44 89 f1 80 e1 07 80 c1 03 38 c1 7c 95 4c 89 f7 e8 db 6f 91 00 eb 8b 66 0f 1f 84 00 00 00 00 00 55 <41> 57 41 56 41 55 41 54 53 48 81 ec 80 00 00 00 49 89 ff 48 b8 00
RSP: 0018:ffffc9000f0c6db0 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffc9000f0c6dc0 RCX: 0000000080000000
RDX: dffffc0000000000 RSI: ffffffff88771a2a RDI: ffffc9000f0c6dc0
RBP: ffffc9000f0c6e50 R08: 0000000000000006 R09: ffffc9000f0c6eb0
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888088081dc0
R13: ffffffff816dc590 R14: ffffc9000f0c6ea0 R15: 0000000000000000
FS: 00007fb2f63f16c0(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c03ef2d000 CR3: 000000007e751000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
save_stack+0xf6/0x1e0 mm/page_owner.c:119
__set_page_owner+0x37/0x300 mm/page_owner.c:181
prep_new_page mm/page_alloc.c:2426 [inline]
get_page_from_freelist+0x322a/0x33c0 mm/page_alloc.c:4159
__alloc_pages+0x272/0x700 mm/page_alloc.c:5421
vm_area_alloc_pages mm/vmalloc.c:2868 [inline]
__vmalloc_area_node mm/vmalloc.c:2924 [inline]
__vmalloc_node_range+0x5ab/0x8c0 mm/vmalloc.c:3029
__vmalloc_node+0x7c/0x90 mm/vmalloc.c:3079
translate_table+0x192/0x21e0 net/ipv4/netfilter/arp_tables.c:538
do_replace net/ipv4/netfilter/arp_tables.c:980 [inline]
do_arpt_set_ctl+0x1cae/0x3080 net/ipv4/netfilter/arp_tables.c:1420
nf_setsockopt+0x28a/0x2b0 net/netfilter/nf_sockopt.c:101
ip_setsockopt+0x2732/0x3fb0 net/ipv4/ip_sockglue.c:1442
__sys_setsockopt+0x57e/0x990 net/socket.c:2196
__do_sys_setsockopt net/socket.c:2207 [inline]
__se_sys_setsockopt net/socket.c:2204 [inline]
__x64_sys_setsockopt+0xb1/0xc0 net/socket.c:2204
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fb2f7e6fae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb2f63f10c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007fb2f7f8ef80 RCX: 00007fb2f7e6fae9
RDX: 0000000000000060 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007fb2f7ebb47a R08: 0000000000000508 R09: 0000000000000000
R10: 0000000020000a00 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fb2f7f8ef80 R15: 00007ffe7ba4e468