INFO: task syz-executor:24113 blocked for more than 143 seconds.
Tainted: G L syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:22200 pid:24113 tgid:24113 ppid:1 task_flags:0x400140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5260 [inline]
__schedule+0x14ea/0x5050 kernel/sched/core.c:6867
__schedule_loop kernel/sched/core.c:6949 [inline]
schedule+0x164/0x360 kernel/sched/core.c:6964
io_schedule+0x7f/0xd0 kernel/sched/core.c:7791
folio_wait_bit_common+0x6d8/0xbc0 mm/filemap.c:1323
__folio_lock mm/filemap.c:1699 [inline]
folio_lock include/linux/pagemap.h:1170 [inline]
__filemap_get_folio_mpol+0x13e/0xb00 mm/filemap.c:1954
__filemap_get_folio include/linux/pagemap.h:774 [inline]
truncate_inode_pages_range+0x48b/0xe30 mm/truncate.c:413
evict+0x631/0xb10 fs/inode.c:839
dispose_list fs/inode.c:879 [inline]
evict_inodes+0x75a/0x7f0 fs/inode.c:933
generic_shutdown_super+0x9a/0x2c0 fs/super.c:628
kill_block_super+0x44/0x90 fs/super.c:1722
deactivate_locked_super+0xbc/0x130 fs/super.c:474
cleanup_mnt+0x437/0x4d0 fs/namespace.c:1318
task_work_run+0x1d9/0x270 kernel/task_work.c:233
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
__exit_to_user_mode_loop kernel/entry/common.c:44 [inline]
exit_to_user_mode_loop+0xed/0x480 kernel/entry/common.c:75
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]
do_syscall_64+0x2b7/0xf80 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa219d9c117
RSP: 002b:00007ffd6567bec8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007fa219e0471f RCX: 00007fa219d9c117
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd6567bf80
RBP: 00007ffd6567bf80 R08: 00007ffd6567cf80 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd6567d010
R13: 00007fa219e0471f R14: 00000000000edadb R15: 00007ffd6567d050
Showing all locks held in the system:
1 lock held by khungtaskd/32:
#0: ffffffff8e55a360 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8e55a360 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:867 [inline]
#0: ffffffff8e55a360 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6775
1 lock held by udevd/5190:
2 locks held by getty/5577:
#0: ffff888034d070a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900036bb2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x45c/0x13c0 drivers/tty/n_tty.c:2211
1 lock held by syz-executor/17838:
#0: ffff8880b863a918 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xa9/0x140 kernel/sched/core.c:647
1 lock held by syz-executor/24113:
#0: ffff8880340a00e0 (&type->s_umount_key#124){+.+.}-{4:4}, at: __super_lock fs/super.c:57 [inline]
#0: ffff8880340a00e0 (&type->s_umount_key#124){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:72 [inline]
#0: ffff8880340a00e0 (&type->s_umount_key#124){+.+.}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:506
6 locks held by syz-executor/30334:
5 locks held by dhcpcd-run-hook/30628:
#0: ffff8880b863a918 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xa9/0x140 kernel/sched/core.c:647
#1: ffff8880b8724588 (psi_seq){-.-.}-{0:0}, at: psi_task_switch+0x53/0x880 kernel/sched/psi.c:933
#2: ffff8880595565b8 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:351 [inline]
#2: ffff8880595565b8 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: __pte_offset_map_lock+0x13d/0x210 mm/pgtable-generic.c:403
#3: ffffffff8e55a360 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#3: ffffffff8e55a360 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:867 [inline]
#3: ffffffff8e55a360 (rcu_read_lock){....}-{1:3}, at: page_table_check_set+0x148/0x610 mm/page_table_check.c:112
#4: ffff88801bae80b0 (&lruvec->lru_lock){..-.}-{3:3}, at: folio_lruvec_lock_irqsave+0x201/0x3c0 mm/memcontrol.c:1256
1 lock held by sed/30629:
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 32 Comm: khungtaskd Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:161 [inline]
__sys_info lib/sys_info.c:157 [inline]
sys_info+0x135/0x170 lib/sys_info.c:165
check_hung_uninterruptible_tasks kernel/hung_task.c:346 [inline]
watchdog+0xf90/0xfe0 kernel/hung_task.c:515
kthread+0x726/0x8b0 kernel/kthread.c:463
ret_from_fork+0x51b/0xa40 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30631 Comm: dhcpcd-run-hook Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0010:do_wp_page+0x6de/0x5990 mm/memory.c:4178
Code: c4 7f bf 80 00 00 00 44 89 e6 e8 9d d8 b1 ff 41 83 fc 7f 0f 86 22 31 00 00 4c 89 f7 be 04 00 00 00 e8 b6 26 1a 00 f0 41 ff 06 <4c> 8d 73 60 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8
RSP: 0000:ffffc9000ef4fa60 EFLAGS: 00000206
RAX: ffffffff8212a201 RBX: ffffc9000ef4fd60 RCX: ffffffff8212a30a
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffea0002b80c34
RBP: ffffc9000ef4fc10 R08: ffffea0002b80c37 R09: 1ffffd4000570186
R10: dffffc0000000000 R11: fffff94000570187 R12: 0000000000000081
R13: dffffc0000000000 R14: ffffea0002b80c34 R15: ffffc9000ef4fdb0
FS: 00007fa689959c80(0000) GS:ffff8881256f5000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa689bf9848 CR3: 000000002f962000 CR4: 0000000000350ef0
Call Trace:
handle_pte_fault mm/memory.c:6292 [inline]
__handle_mm_fault mm/memory.c:6414 [inline]
handle_mm_fault+0x1520/0x32a0 mm/memory.c:6583
do_user_addr_fault+0xa73/0x1360 arch/x86/mm/fault.c:1334
handle_page_fault arch/x86/mm/fault.c:1474 [inline]
exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1527
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x7fa689af82b3
Code: 10 00 84 db 41 0f 94 c6 44 89 f7 e8 d7 45 01 00 49 89 c5 84 db 0f 84 bc 02 00 00 e8 57 b3 ff ff 89 c3 85 c0 0f 85 d5 01 00 00 <48> 83 05 8d 15 10 00 04 48 8b 1d c6 ac 0f 00 48 8b 83 38 0b 00 00
RSP: 002b:00007ffe28aa64a0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fa689a61f07
RDX: 0000000000000000 RSI: 00007ffe28aa6478 RDI: 0000000000000002
RBP: 000055a7a1335e60 R08: 00007fa689bf4b60 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 000055a7a1338060
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000