INFO: task syz.4.204:6862 blocked for more than 144 seconds.
Not tainted 6.13.0-syzkaller-00603-g3d3a9c8b89d4 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.204 state:D stack:27824 pid:6862 tgid:6854 ppid:5826 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0xe58/0x5ad0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
__mutex_lock_common kernel/locking/mutex.c:665 [inline]
__mutex_lock+0x62b/0xa60 kernel/locking/mutex.c:735
netfs_writepages+0x16c/0x8f0 fs/netfs/write_issue.c:564
do_writepages+0x1b3/0x820 mm/page-writeback.c:2708
filemap_fdatawrite_wbc mm/filemap.c:388 [inline]
filemap_fdatawrite_wbc+0x104/0x160 mm/filemap.c:378
__filemap_fdatawrite_range+0xb3/0xf0 mm/filemap.c:421
v9fs_vfs_setattr+0x93a/0xab0 fs/9p/vfs_inode.c:1072
notify_change+0x6a6/0x1230 fs/attr.c:552
vfs_utimes+0x41d/0x850 fs/utimes.c:66
do_utimes_path fs/utimes.c:99 [inline]
do_utimes+0x124/0x2a0 fs/utimes.c:140
do_futimesat+0x18f/0x200 fs/utimes.c:194
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3510585d29
RSP: 002b:00007f35113dc038 EFLAGS: 00000246 ORIG_RAX: 00000000000000eb
RAX: ffffffffffffffda RBX: 00007f3510776160 RCX: 00007f3510585d29
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180
RBP: 00007f3510601b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f3510776160 R15: 00007ffc60333138
Showing all locks held in the system:
2 locks held by kworker/u8:1/12:
#0: ffff88801b081148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x1293/0x1ba0 kernel/workqueue.c:3211
#1: ffff8880b8628a88 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x2c1/0x8e0 kernel/sched/psi.c:987
1 lock held by khungtaskd/30:
#0: ffffffff8e1bbcc0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e1bbcc0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e1bbcc0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6744
2 locks held by getty/5579:
#0: ffff8880369d20a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002fde2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
2 locks held by kworker/u8:9/5919:
#0: ffff88801b081148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x1293/0x1ba0 kernel/workqueue.c:3211
#1: ffffc90003367d80 ((work_completion)(&rreq->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3212
1 lock held by syz.4.204/6860:
#0: ffff8880589e8500 (&ctx->wb_lock){+.+.}-{4:4}, at: netfs_writepages+0xb9/0x8f0 fs/netfs/write_issue.c:558
3 locks held by syz.4.204/6862:
#0: ffff88805fe26420 (sb_writers#19){.+.+}-{0:0}, at: vfs_utimes+0x6b9/0x850 fs/utimes.c:36
#1: ffff8880589e8148 (&sb->s_type->i_mutex_key#24){++++}-{4:4}, at: inode_lock include/linux/fs.h:831 [inline]
#1: ffff8880589e8148 (&sb->s_type->i_mutex_key#24){++++}-{4:4}, at: vfs_utimes+0x3d2/0x850 fs/utimes.c:65
#2: ffff8880589e8500 (&ctx->wb_lock){+.+.}-{4:4}, at: netfs_writepages+0x16c/0x8f0 fs/netfs/write_issue.c:564
1 lock held by syz.0.452/7968:
2 locks held by syz.1.454/7981:
#0: ffffffff8fedba50 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x292/0x6c0 net/core/net_namespace.c:512
#1: ffffffff8e1c75f8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock+0x282/0x3b0 kernel/rcu/tree_exp.h:297
1 lock held by dhcpcd/7991:
#0: ffff88807c972258 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1623 [inline]
#0: ffff88807c972258 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x2c/0xf60 net/packet/af_packet.c:3253
4 locks held by dhcpcd-run-hook/7996:
#0: ffff8880b863ec18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:606 [inline]
#0: ffff8880b863ec18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x7e/0x130 kernel/sched/core.c:591
#1: ffff8880b8628a88 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x2c1/0x8e0 kernel/sched/psi.c:987
#2: ffff8880254bca78 (&sig->wait_chldexit){....}-{3:3}, at: __wake_up_common_lock kernel/sched/wait.c:105 [inline]
#2: ffff8880254bca78 (&sig->wait_chldexit){....}-{3:3}, at: __wake_up_sync_key+0x1c/0x50 kernel/sched/wait.c:173
#3: ffff8880321ad298 (&p->pi_lock){-.-.}-{2:2}, at: class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:551 [inline]
#3: ffff8880321ad298 (&p->pi_lock){-.-.}-{2:2}, at: try_to_wake_up+0xb6/0x1490 kernel/sched/core.c:4205
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-syzkaller-00603-g3d3a9c8b89d4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:234 [inline]
watchdog+0xf14/0x1240 kernel/hung_task.c:397
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 35 Comm: kworker/u8:2 Not tainted 6.13.0-syzkaller-00603-g3d3a9c8b89d4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:mark_lock+0x82/0xc60 kernel/locking/lockdep.c:4710
Code: 00 f2 f2 f2 c7 40 08 00 f2 f2 f2 c7 40 10 00 00 00 f3 c7 40 14 f3 f3 f3 f3 65 48 8b 04 25 28 00 00 00 48 89 84 24 08 01 00 00 <31> c0 41 83 fe 09 0f 87 e3 00 00 00 41 83 fe 08 49 89 fc 48 89 f3
RSP: 0018:ffffc90000ab7510 EFLAGS: 00000082
RAX: 1b628cf5975ea800 RBX: ffff888020e83032 RCX: 0000000000000003
RDX: dffffc0000000000 RSI: ffff888020e83010 RDI: ffff888020e82440
RBP: ffffc90000ab7648 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff96e74cc7 R11: 0000000000000005 R12: ffffed10041d05e3
R13: ffff888020e82440 R14: 0000000000000002 R15: 1ffff92000156ea8
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000563c750b7098 CR3: 000000000df7e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
mark_usage kernel/locking/lockdep.c:4658 [inline]
__lock_acquire+0x98e/0x3c40 kernel/locking/lockdep.c:5180
lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5849
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:351 [inline]
__pte_offset_map_lock+0xf1/0x300 mm/pgtable-generic.c:402
pte_offset_map_lock include/linux/mm.h:3035 [inline]
__get_locked_pte+0x79/0xc0 mm/memory.c:2006
get_locked_pte include/linux/mm.h:2740 [inline]
__text_poke+0x224/0xca0 arch/x86/kernel/alternative.c:1928
text_poke_bp_batch+0x3e0/0x760 arch/x86/kernel/alternative.c:2346
text_poke_flush arch/x86/kernel/alternative.c:2515 [inline]
text_poke_flush arch/x86/kernel/alternative.c:2512 [inline]
text_poke_finish+0x30/0x40 arch/x86/kernel/alternative.c:2522
arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
jump_label_update+0x1d7/0x400 kernel/jump_label.c:920
static_key_disable_cpuslocked+0x158/0x1c0 kernel/jump_label.c:240
static_key_disable+0x1a/0x20 kernel/jump_label.c:248
toggle_allocation_gate mm/kfence/core.c:854 [inline]
toggle_allocation_gate+0x147/0x260 mm/kfence/core.c:841
process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3236
process_scheduled_works kernel/workqueue.c:3317 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244