INFO: task syz.3.113:4741 blocked for more than 143 seconds.
      Not tainted 5.15.179-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.113       state:D stack:25600 pid: 4741 ppid:  4172 flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5029 [inline]
 __schedule+0x12c4/0x45b0 kernel/sched/core.c:6375
 schedule+0x11b/0x1f0 kernel/sched/core.c:6458
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6517
 rwsem_down_read_slowpath+0x605/0xb40 kernel/locking/rwsem.c:1055
 __down_read_common kernel/locking/rwsem.c:1239 [inline]
 __down_read kernel/locking/rwsem.c:1252 [inline]
 down_read_nested+0x9c/0x2f0 kernel/locking/rwsem.c:1624
 xfs_ilock+0x1c0/0x390 fs/xfs/xfs_inode.c:195
 __xfs_filemap_fault+0x3ec/0x950 fs/xfs/xfs_file.c:1345
 do_page_mkwrite+0x1a9/0x440 mm/memory.c:2922
 wp_page_shared+0x179/0x690 mm/memory.c:3259
 handle_pte_fault mm/memory.c:4668 [inline]
 __handle_mm_fault mm/memory.c:4785 [inline]
 handle_mm_fault+0x2a3d/0x5960 mm/memory.c:4883
 faultin_page mm/gup.c:976 [inline]
 __get_user_pages+0x4ed/0x11d0 mm/gup.c:1197
 faultin_vma_page_range+0x21f/0x2a0 mm/gup.c:1590
 madvise_populate mm/madvise.c:856 [inline]
 madvise_vma mm/madvise.c:1004 [inline]
 do_madvise+0xbca/0x3470 mm/madvise.c:1207
 __do_sys_madvise mm/madvise.c:1233 [inline]
 __se_sys_madvise mm/madvise.c:1231 [inline]
 __x64_sys_madvise+0xa1/0xb0 mm/madvise.c:1231
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f1cad9e1169
RSP: 002b:00007f1cab829038 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 00007f1cadbfa080 RCX: 00007f1cad9e1169
RDX: 0000000000000017 RSI: 0000000000600000 RDI: 0000200000000000
RBP: 00007f1cada622a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f1cadbfa080 R15: 00007ffe03e9d5a8
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/27:
 #0: ffffffff8cb1f4e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by kworker/u4:4/1278:
1 lock held by udevd/3546:
 #0: 
ffff8880b8f3a318 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x26/0x140 kernel/sched/core.c:475
2 locks held by dhcpcd/3837:
 #0: ffffffff8dc2b968 (vlan_ioctl_mutex){+.+.}-{3:3}, at: sock_ioctl+0x526/0x770 net/socket.c:1219
 #1: ffffffff8dc43ac8 (rtnl_mutex){+.+.}-{3:3}, at: vlan_ioctl_handler+0x114/0x9a0 net/8021q/vlan.c:555
2 locks held by getty/3930:
 #0: ffff88814c7d7098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
 #1: ffffc900025ae2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 drivers/tty/n_tty.c:2158
3 locks held by kworker/1:3/4158:
 #0: ffff88802bbc7d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
 #1: ffffc90002e5fd20 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
 #2: ffffffff8dc43ac8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd8/0x16f0 net/ipv6/addrconf.c:4113
3 locks held by kworker/1:4/4214:
 #0: ffff888141fbcd38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
 #1: ffffc900045ffd20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
 #2: 
ffff8880248fd220
 (
&dev->mutex
){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
){....}-{3:3}, at: hub_event+0x208/0x54c0 drivers/usb/core/hub.c:5781
2 locks held by kworker/1:7/4244:
 #0: ffff888017472138 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
 #1: ffffc9000466fd20 ((work_completion)(&rew.rew_work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
2 locks held by kworker/0:7/4421:
5 locks held by syz.3.113/4719:
 #0: 
ffff888079e50460 (sb_writers#21){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:3042 [inline]
ffff888079e50460 (sb_writers#21){.+.+}-{0:0}, at: vfs_fallocate+0x4bd/0x6b0 fs/open.c:307
 #1: ffff88805f8a1980 (&sb->s_type->i_mutex_key#30){+.+.}-{3:3}, at: xfs_ilock+0xec/0x390 fs/xfs/xfs_inode.c:184
 #2: ffff88805f8a1b20 (mapping.invalidate_lock#4){++++}-{3:3}, at: xfs_ilock+0x17d/0x390 fs/xfs/xfs_inode.c:192
 #3: ffff888079e50650 (sb_internal#2){.+.+}-{0:0}, at: xfs_bmapi_convert_delalloc+0x20f/0x1180 fs/xfs/libxfs/xfs_bmap.c:4573
 #4: ffff88805f8a1768 (&xfs_nondir_ilock_class){++++}-{3:3}, at: xfs_bmapi_convert_delalloc+0x23c/0x1180 fs/xfs/libxfs/xfs_bmap.c:4578
3 locks held by syz.3.113/4741:
 #0: ffff88802c41f128 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline]
 #0: ffff88802c41f128 (&mm->mmap_lock){++++}-{3:3}, at: do_madvise+0x37f/0x3470 mm/madvise.c:1174
 #1: ffff888079e50558 (sb_pagefaults#3){.+.+}-{0:0}, at: do_page_mkwrite+0x1a9/0x440 mm/memory.c:2922
 #2: ffff88805f8a1b20 (mapping.invalidate_lock#4){++++}-{3:3}, at: xfs_ilock+0x1c0/0x390 fs/xfs/xfs_inode.c:195
3 locks held by kworker/u4:12/4973:
 #0: ffff888019bd8938 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
 #1: 
ffffc9000374fd20
 (
(work_completion)(&(&wb->dwork)->work)
){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
 #2: ffff888079e500e0 (&type->s_umount_key#100){++++}-{3:3}, at: trylock_super+0x1b/0xf0 fs/super.c:418
3 locks held by kworker/u4:14/5145:
5 locks held by kworker/u4:20/5749:
 #0: ffff8880175cd938 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
 #1: ffffc900039dfd20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
 #2: ffffffff8dc37e10 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x166/0xc90 net/core/net_namespace.c:572
 #3: ffff8880775313e8 (&wg->device_update_lock){+.+.}-{3:3}, at: wg_destruct+0x10c/0x2f0 drivers/net/wireguard/device.c:233
 #4: ffffffff8cb23aa8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline]
 #4: ffffffff8cb23aa8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x350/0x740 kernel/rcu/tree_exp.h:845
3 locks held by kworker/0:16/5825:
 #0: 
ffff88802bbc7d38
 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
 #1: ffffc9000386fd20 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
 #2: ffffffff8dc43ac8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd8/0x16f0 net/ipv6/addrconf.c:4113
3 locks held by kworker/0:17/5826:
 #0: ffff888017470938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
 #1: ffffc9000387fd20 (ser_release_work){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
 #2: ffffffff8dc43ac8 (rtnl_mutex){+.+.}-{3:3}, at: ser_release+0x137/0x240 drivers/net/caif/caif_serial.c:307
1 lock held by syz-executor/6434:
 #0: ffffffff8dc43ac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
 #0: ffffffff8dc43ac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x956/0xef0 net/core/rtnetlink.c:5644
1 lock held by syz.0.638/6711:
2 locks held by syz.7.636/6708:
 #0: 
ffff88805f92c410
 (
&sb->s_type->i_mutex_key
#11
){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline]
){+.+.}-{3:3}, at: __sock_release net/socket.c:648 [inline]
){+.+.}-{3:3}, at: sock_close+0x98/0x230 net/socket.c:1336
 #1: ffffffff8cb23aa8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline]
 #1: ffffffff8cb23aa8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x350/0x740 kernel/rcu/tree_exp.h:845

=============================================

NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.179-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2d0 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:212 [inline]
 watchdog+0xe72/0xeb0 kernel/hung_task.c:369
 kthread+0x3f6/0x4f0 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4216 Comm: kworker/0:6 Not tainted 5.15.179-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: xfs-buf/loop3 xfs_buf_ioend_work
RIP: 0010:__preempt_count_add kernel/rcu/tree.c:1119 [inline]
RIP: 0010:rcu_is_watching+0x4/0xa0 kernel/rcu/tree.c:1122
Code: 5d 41 5e 41 5f 5d c3 e8 2a b2 d4 08 41 f7 c4 00 02 00 00 75 b4 eb b3 e8 0a b2 d4 08 66 2e 0f 1f 84 00 00 00 00 00 41 57 41 56 <53> 65 ff 05 7c 22 97 7e e8 af c5 d4 08 89 c3 83 f8 08 73 72 49 bf
RSP: 0018:ffffc90000007c28 EFLAGS: 00000057
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff81630798
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8e0a9fa8
RBP: ffffc90000007d70 R08: dffffc0000000000 R09: fffffbfff1c153f6
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000000f94
R13: ffffffff816fe471 R14: ffffc90000007da0 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6df6f8ed58 CR3: 000000002b604000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000097 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 trace_lock_release include/trace/events/lock.h:58 [inline]
 lock_release+0xb9/0x9a0 kernel/locking/lockdep.c:5634
 seqcount_lockdep_reader_access+0x10b/0x220 include/linux/seqlock.h:104
 ktime_get+0x31/0x270 kernel/time/timekeeping.c:829
 clockevents_program_event+0xe1/0x310 kernel/time/clockevents.c:326
 hrtimer_interrupt+0x546/0x980 kernel/time/hrtimer.c:1827
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline]
 __sysvec_apic_timer_interrupt+0x13b/0x4b0 arch/x86/kernel/apic/apic.c:1114
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:console_trylock_spinning+0x36b/0x3f0 kernel/printk/printk.c:1909
Code: 0f 84 75 ff ff ff e8 14 1a 1a 00 fb 31 db eb 48 e8 0a 1a 1a 00 e8 95 7c d9 08 4d 85 ed 74 cd e8 fb 19 1a 00 fb bb 01 00 00 00 <48> c7 c7 a0 bd 9f 8c 31 f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00
RSP: 0018:ffffc9000461f740 EFLAGS: 00000293
RAX: ffffffff816682c5 RBX: 0000000000000001 RCX: ffff88806157bb80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000461f810 R08: ffffffff8166827e R09: fffffbfff2131e4c
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff920008c3ee8
R13: 0000000000000200 R14: 0000000000000046 R15: dffffc0000000000
 vprintk_emit+0xa6/0x150 kernel/printk/printk.c:2273
 _printk+0xd1/0x120 kernel/printk/printk.c:2299
 print_hex_dump+0x1a2/0x250 lib/hexdump.c:285
 xfs_hex_dump+0x39/0x50 fs/xfs/xfs_message.c:118
 xfs_buf_verifier_error+0x1bc/0x290 fs/xfs/xfs_error.c:418
 xfs_agf_read_verify+0x1f8/0x2a0 fs/xfs/libxfs/xfs_alloc.c:2955
 xfs_buf_ioend+0x26a/0x6e0 fs/xfs/xfs_buf.c:1263
 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
 worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
 kthread+0x3f6/0x4f0 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>