INFO: task syz.0.3130:17414 blocked for more than 143 seconds.
Not tainted 6.15.0-rc2-syzkaller-00488-g6fea5fabd332 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.3130 state:D stack:27912 pid:17414 tgid:17405 ppid:9819 task_flags:0x400040 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x1b88/0x5240 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0x163/0x360 kernel/sched/core.c:6860
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6917
__mutex_lock_common kernel/locking/mutex.c:678 [inline]
__mutex_lock+0x805/0x10c0 kernel/locking/mutex.c:746
blk_trace_remove+0x20/0x40 kernel/trace/blktrace.c:406
sg_ioctl_common drivers/scsi/sg.c:1122 [inline]
sg_ioctl+0x4a3/0x2e20 drivers/scsi/sg.c:1156
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:906 [inline]
__se_sys_ioctl+0xf1/0x160 fs/ioctl.c:892
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf3/0x210 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f693a78e169
RSP: 002b:00007f6938191038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f693a9b6240 RCX: 00007f693a78e169
RDX: 0000000020000000 RSI: 0000000000001276 RDI: 0000000000000007
RBP: 00007f693a810a68 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f693a9b6240 R15: 00007f693aadfa28
Showing all locks held in the system:
1 lock held by khungtaskd/31:
#0: ffffffff8ed3df20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8ed3df20 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#0: ffffffff8ed3df20 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x30/0x180 kernel/locking/lockdep.c:6764
1 lock held by udevd/5210:
2 locks held by getty/5596:
#0: ffff8880318750a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000333b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x5bb/0x1700 drivers/tty/n_tty.c:2222
6 locks held by kworker/0:1/14669:
3 locks held by kworker/u8:9/15196:
2 locks held by syz.0.3130/17413:
1 lock held by syz.0.3130/17414:
#0:
ffff88814375c398 (&q->debugfs_mutex){+.+.}-{4:4}, at: blk_trace_remove+0x20/0x40 kernel/trace/blktrace.c:406
4 locks held by udevd/18024:
#0: ffff888023a999a8 (mapping.invalidate_lock){++++}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:922 [inline]
#0: ffff888023a999a8 (mapping.invalidate_lock){++++}-{4:4}, at: filemap_fault+0x9bd/0x13d0 mm/filemap.c:3410
#1: ffff8880b8639b18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xb0/0x140 kernel/sched/core.c:613
#2: ffff8880b8639b18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xb0/0x140 kernel/sched/core.c:613
#3: ffff888033ec64a8 (&ep->wq){....}-{3:3}, at: __wake_up_common_lock+0x25/0x1e0 kernel/sched/wait.c:105
1 lock held by syz.5.3429/18812:
#0: ffffffff8ed43300 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x4c/0x530 kernel/rcu/tree.c:3774
3 locks held by syz.2.3431/18825:
3 locks held by syz.8.3432/18824:
#0: ffff88807d732c08 (&sb->s_type->i_mutex_key#10){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
#0: ffff88807d732c08 (&sb->s_type->i_mutex_key#10){+.+.}-{4:4}, at: __sock_release net/socket.c:646 [inline]
#0: ffff88807d732c08 (&sb->s_type->i_mutex_key#10){+.+.}-{4:4}, at: sock_close+0x90/0x240 net/socket.c:1391
#1: ffffffff9015fcf0 ((netlink_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x53/0x90 kernel/notifier.c:379
#2: ffff888032cd54d8 (&nft_net->commit_mutex){+.+.}-{4:4}, at: nft_rcv_nl_event+0x122/0x6c0 net/netfilter/nf_tables_api.c:11853
2 locks held by dhcpcd/18835:
#0: ffff88804f900258 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1651 [inline]
#0: ffff88804f900258 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xcb0 net/packet/af_packet.c:3252
#1: ffffffff8ed43438 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:304 [inline]
#1: ffffffff8ed43438 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x384/0x830 kernel/rcu/tree_exp.h:998
2 locks held by dhcpcd/18836:
#0: ffff88805eea0258 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1651 [inline]
#0: ffff88805eea0258 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xcb0 net/packet/af_packet.c:3252
#1: ffffffff8ed43438 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:336 [inline]
#1: ffffffff8ed43438 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x454/0x830 kernel/rcu/tree_exp.h:998
1 lock held by dhcpcd/18837:
#0: ffff888062846258 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1651 [inline]
#0: ffff888062846258 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xcb0 net/packet/af_packet.c:3252
1 lock held by dhcpcd/18838:
#0: ffff888062844258 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1651 [inline]
#0: ffff888062844258 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xcb0 net/packet/af_packet.c:3252
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.15.0-rc2-syzkaller-00488-g6fea5fabd332 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
nmi_cpu_backtrace+0x4ab/0x4e0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:274 [inline]
watchdog+0x1058/0x10a0 kernel/hung_task.c:437
kthread+0x7b7/0x940 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 7199 Comm: kworker/0:10 Not tainted 6.15.0-rc2-syzkaller-00488-g6fea5fabd332 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: usb_hub_wq hub_event
RIP: 0010:_compound_head include/linux/page-flags.h:282 [inline]
RIP: 0010:virt_to_folio include/linux/mm.h:1404 [inline]
RIP: 0010:virt_to_slab mm/slab.h:211 [inline]
RIP: 0010:kasan_addr_to_slab+0x30/0x80 mm/kasan/common.c:38
Code: 89 fb e8 b3 7c 42 ff 84 c0 74 3e 48 89 df e8 a7 7a 42 ff 48 c1 e8 06 48 83 e0 c0 48 ba 00 00 00 00 00 ea ff ff 48 8b 4c 10 08 c1 01 75 42 48 01 d0 66 90 0f b6 50 33 c1 e2 18 31 c9 81 fa 00
RSP: 0018:ffffc90000007a80 EFLAGS: 00000006
RAX: 0000000000cf10c0 RBX: ffff888033c43800 RCX: ffffea0000cf1001
RDX: ffffea0000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff816f370c R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff888033c43800 R14: ffff88801b095c10 R15: ffff88801b0a0060
FS: 0000000000000000(0000) GS:ffff888124f9a000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3d08cf CR3: 00000000252c0000 CR4: 00000000003526f0
DR0: 0000000000000007 DR1: 0000000000000002 DR2: 0000000000000008
DR3: 1000000100000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
kasan_record_aux_stack+0xf/0xd0 mm/kasan/generic.c:533
insert_work+0x3e/0x330 kernel/workqueue.c:2183
__queue_work+0xda3/0x10a0 kernel/workqueue.c:2341
call_timer_fn+0x189/0x650 kernel/time/timer.c:1789
expire_timers kernel/time/timer.c:1835 [inline]
__run_timers kernel/time/timer.c:2414 [inline]
__run_timer_base+0x699/0x8e0 kernel/time/timer.c:2426
run_timer_base kernel/time/timer.c:2435 [inline]
run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2445
handle_softirqs+0x2d6/0x9b0 kernel/softirq.c:579
__do_softirq kernel/softirq.c:613 [inline]
invoke_softirq kernel/softirq.c:453 [inline]
__irq_exit_rcu+0xfb/0x220 kernel/softirq.c:680
irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_trylock_spinning kernel/printk/printk.c:2061 [inline]
RIP: 0010:vprintk_emit+0x731/0xa40 kernel/printk/printk.c:2449
Code: 00 e8 f3 28 21 00 4c 8d bc 24 a0 00 00 00 4d 85 e4 75 07 e8 e1 28 21 00 eb 06 e8 da 28 21 00 fb 49 bc 00 00 00 00 00 fc ff df <48> c7 c7 80 9a c1 8e 31 f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00
RSP: 0018:ffffc9001b7672c0 EFLAGS: 00000283
RAX: ffffffff81a19446 RBX: 0000000000000000 RCX: 0000000000100000
RDX: ffffc9001d2af000 RSI: 0000000000026188 RDI: 0000000000026189
RBP: ffffc9001b7673d0 R08: ffffffff81a1941f R09: 1ffffffff20bfcae
R10: dffffc0000000000 R11: fffffbfff20bfcaf R12: dffffc0000000000
R13: 1ffff920036ece5c R14: ffffffff81a19272 R15: ffffc9001b767360
dev_vprintk_emit+0x358/0x420 drivers/base/core.c:4891
dev_printk_emit+0xdf/0x130 drivers/base/core.c:4902
_dev_info+0x12d/0x180 drivers/base/core.c:4960
usb_disconnect+0xe7/0x960 drivers/usb/core/hub.c:2298
hub_port_connect drivers/usb/core/hub.c:5371 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5671 [inline]
port_event drivers/usb/core/hub.c:5831 [inline]
hub_event+0x1d2a/0x50f0 drivers/usb/core/hub.c:5913
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xac3/0x18e0 kernel/workqueue.c:3319
worker_thread+0x870/0xd50 kernel/workqueue.c:3400
kthread+0x7b7/0x940 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245