INFO: task kworker/1:0:20 blocked for more than 143 seconds.
Not tainted 5.17.0-rc7-syzkaller-00078-g3bf7edc84a9e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:0 state:D stack:18488 pid: 20 ppid: 2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:4995 [inline]
__schedule+0x926/0x1080 kernel/sched/core.c:6304
schedule+0x12b/0x1f0 kernel/sched/core.c:6377
usb_kill_urb+0x1d5/0x310 drivers/usb/core/urb.c:726
usb_start_wait_urb+0x265/0x530 drivers/usb/core/message.c:64
usb_internal_control_msg drivers/usb/core/message.c:102 [inline]
usb_control_msg+0x2a5/0x4b0 drivers/usb/core/message.c:153
usb_get_descriptor+0xb5/0x3c0 drivers/usb/core/message.c:793
usb_get_device_descriptor+0x8a/0xe0 drivers/usb/core/message.c:1071
hub_port_init+0x106f/0x2e60 drivers/usb/core/hub.c:4927
hub_port_connect+0xc30/0x2910 drivers/usb/core/hub.c:5287
hub_port_connect_change+0x5f9/0xc20 drivers/usb/core/hub.c:5502
port_event+0xca0/0x13e0 drivers/usb/core/hub.c:5660
hub_event+0x4ed/0xe40 drivers/usb/core/hub.c:5742
process_one_work+0x86c/0x1190 kernel/workqueue.c:2307
worker_thread+0xab1/0x1300 kernel/workqueue.c:2454
kthread+0x2a3/0x2d0 kernel/kthread.c:377
ret_from_fork+0x1f/0x30
Showing all locks held in the system:
5 locks held by kworker/1:0/20:
#0: ffff88801644dd38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x7db/0x1190 kernel/workqueue.c:2280
#1: ffffc90000da7d20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x81b/0x1190 kernel/workqueue.c:2282
#2: ffff88801df7f220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline]
#2: ffff88801df7f220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1b2/0xe40 drivers/usb/core/hub.c:5688
#3: ffff88801f3ea580 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3091 [inline]
#3: ffff88801f3ea580 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect+0x4f4/0x2910 drivers/usb/core/hub.c:5254
#4: ffff88801ed18968 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect+0x51d/0x2910 drivers/usb/core/hub.c:5255
1 lock held by khungtaskd/26:
#0: ffffffff8cb1d8a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3281:
#0: ffff88814ab04098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc90002b662e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6c5/0x1c60 drivers/tty/n_tty.c:2075
5 locks held by kworker/1:8/3732:
#0: ffff88801644dd38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x7db/0x1190 kernel/workqueue.c:2280
#1:
ffffc90004147d20
((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x81b/0x1190 kernel/workqueue.c:2282
#2: ffff88801f221220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline]
#2: ffff88801f221220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1b2/0xe40 drivers/usb/core/hub.c:5688
#3: ffff88801f224580 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3091 [inline]
#3: ffff88801f224580 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect+0x4f4/0x2910 drivers/usb/core/hub.c:5254
#4: ffff88801ec23168 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect+0x51d/0x2910 drivers/usb/core/hub.c:5255
2 locks held by kworker/1:1/21354:
#0: ffff888011466538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x7db/0x1190 kernel/workqueue.c:2280
#1: ffffc9000fa4fd20 ((work_completion)(&rew.rew_work)){+.+.}-{0:0}, at: process_one_work+0x81b/0x1190 kernel/workqueue.c:2282
3 locks held by kworker/u4:12/12379:
5 locks held by kworker/0:9/15893:
#0: ffff88801644dd38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x7db/0x1190 kernel/workqueue.c:2280
#1: ffffc9000b907d20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x81b/0x1190 kernel/workqueue.c:2282
#2: ffff88801f0d9220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline]
#2: ffff88801f0d9220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1b2/0xe40 drivers/usb/core/hub.c:5688
#3: ffff8880818b9580 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3091 [inline]
#3: ffff8880818b9580 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect+0x4f4/0x2910 drivers/usb/core/hub.c:5254
#4: ffff88801efa7968 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect+0x51d/0x2910 drivers/usb/core/hub.c:5255
5 locks held by kworker/1:5/15993:
#0: ffff88801644dd38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x7db/0x1190 kernel/workqueue.c:2280
#1: ffffc9000f5d7d20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x81b/0x1190 kernel/workqueue.c:2282
#2: ffff88801df7c220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline]
#2: ffff88801df7c220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1b2/0xe40 drivers/usb/core/hub.c:5688
#3: ffff888147af0580 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3091 [inline]
#3: ffff888147af0580 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect+0x4f4/0x2910 drivers/usb/core/hub.c:5254
#4: ffff88801efa7968 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect+0x51d/0x2910 drivers/usb/core/hub.c:5255
1 lock held by syz-executor.2/5063:
#0: ffff8880b9a39798 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x25/0x110 kernel/sched/core.c:489
2 locks held by syz-executor.2/5071:
#0: ffffffff8db9aac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
#0: ffffffff8db9aac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x92d/0xec0 net/core/rtnetlink.c:5593
#1: ffffffff8cb22868 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline]
#1: ffffffff8cb22868 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x277/0x740 kernel/rcu/tree_exp.h:840
1 lock held by syz-executor.1/5080:
#0: ffffffff8db9aac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
#0: ffffffff8db9aac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x92d/0xec0 net/core/rtnetlink.c:5593
1 lock held by syz-executor.1/5085:
#0: ffffffff8db9aac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
#0: ffffffff8db9aac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x92d/0xec0 net/core/rtnetlink.c:5593
1 lock held by syz-executor.4/5074:
#0: ffffffff8db9aac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:72 [inline]
#0: ffffffff8db9aac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x92d/0xec0 net/core/rtnetlink.c:5593
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 26 Comm: khungtaskd Not tainted 5.17.0-rc7-syzkaller-00078-g3bf7edc84a9e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1dc/0x2d8 lib/dump_stack.c:106
nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x16a/0x280 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
watchdog+0xc82/0xcd0 kernel/hung_task.c:369
kthread+0x2a3/0x2d0 kernel/kthread.c:377
ret_from_fork+0x1f/0x30
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 2949 Comm: syslogd Not tainted 5.17.0-rc7-syzkaller-00078-g3bf7edc84a9e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:check_preemption_disabled+0x86/0x1c0
Code: 44 24 08 0f 85 52 01 00 00 89 d8 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 c7 04 24 00 00 00 00 9c 8f 04 24 4c 8b 24 24 00 02 00 00 be 00 02 00 00 4c 21 e6 31 ff 0f 1f 44 00 00 4c 21
RSP: 0018:ffffc90001caf1d8 EFLAGS: 00000046
RAX: f67c814b126fb000 RBX: 0000000000000000 RCX: ffff88807e2e4458
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff1ffbbc5
R10: fffffbfff1ffbbc5 R11: 0000000000000000 R12: 0000000000000046
R13: 1ffff92000395e4c R14: ffffffff8a6f83e0 R15: ffffffff8ad67ae0
FS: 00007feb13fe8800(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555572fd848 CR3: 0000000024b97000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lockdep_recursion_finish kernel/locking/lockdep.c:438 [inline]
lock_acquire+0x1af/0x4d0 kernel/locking/lockdep.c:5641
rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:268
rcu_read_lock include/linux/rcupdate.h:694 [inline]
is_bpf_text_address+0x27/0x270 kernel/bpf/core.c:715
kernel_text_address+0x9e/0xd0 kernel/extable.c:124
__kernel_text_address+0x9/0x40 kernel/extable.c:78
unwind_get_return_address+0x48/0x80 arch/x86/kernel/unwind_orc.c:318
arch_stack_walk+0xf8/0x140 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x11b/0x1e0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track+0x4c/0x70 mm/kasan/common.c:45
kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:370
____kasan_slab_free+0x126/0x180 mm/kasan/common.c:366
kasan_slab_free include/linux/kasan.h:236 [inline]
slab_free_hook mm/slub.c:1728 [inline]
slab_free_freelist_hook+0x12e/0x1a0 mm/slub.c:1754
slab_free mm/slub.c:3509 [inline]
kfree+0xb8/0x2e0 mm/slub.c:4562
skb_free_head net/core/skbuff.c:655 [inline]
skb_release_data+0x620/0x770 net/core/skbuff.c:677
skb_release_all net/core/skbuff.c:742 [inline]
__kfree_skb+0x56/0x1d0 net/core/skbuff.c:756
skb_free_datagram+0x27/0x1e0 net/core/datagram.c:325
__unix_dgram_recvmsg+0xc91/0x1220 net/unix/af_unix.c:2471
sock_recvmsg_nosec net/socket.c:948 [inline]
sock_recvmsg net/socket.c:966 [inline]
sock_read_iter+0x3a7/0x4d0 net/socket.c:1039
call_read_iter include/linux/fs.h:2068 [inline]
new_sync_read fs/read_write.c:400 [inline]
vfs_read+0xaf9/0xe60 fs/read_write.c:481
ksys_read+0x18f/0x2c0 fs/read_write.c:619
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7feb141748fe
Code: c0 e9 e6 fe ff ff 50 48 8d 3d 0e c7 09 00 e8 c9 cf 01 00 66 0f 1f 84 00 00 00 00 00 64 8b 04 25 18 00 00 00 85 c0 75 14 0f 05 <48> 3d 00 f0 ff ff 77 5a c3 66 0f 1f 84 00 00 00 00 00 48 83 ec 28
RSP: 002b:00007ffd141927c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007feb141748fe
RDX: 00000000000000ff RSI: 000055d502246950 RDI: 0000000000000000
RBP: 000055d502246910 R08: 00007feb14204040 R09: 00007feb142040c0
R10: 00007feb14203fc0 R11: 0000000000000246 R12: 000055d50224698b
R13: 000055d502246950 R14: 0000000000000000 R15: 0000000000000000
----------------
Code disassembly (best guess):
0: 44 24 08 rex.R and $0x8,%al
3: 0f 85 52 01 00 00 jne 0x15b
9: 89 d8 mov %ebx,%eax
b: 48 83 c4 10 add $0x10,%rsp
f: 5b pop %rbx
10: 41 5c pop %r12
12: 41 5d pop %r13
14: 41 5e pop %r14
16: 41 5f pop %r15
18: 5d pop %rbp
19: c3 retq
1a: 48 c7 04 24 00 00 00 movq $0x0,(%rsp)
21: 00
22: 9c pushfq
23: 8f 04 24 popq (%rsp)
26: 4c 8b 24 24 mov (%rsp),%r12
* 2a: bd 00 02 00 00 mov $0x200,%ebp <-- trapping instruction
2f: be 00 02 00 00 mov $0x200,%esi
34: 4c 21 e6 and %r12,%rsi
37: 31 ff xor %edi,%edi
39: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
3e: 4c rex.WR
3f: 21 .byte 0x21