INFO: task kworker/1:1:25 blocked for more than 143 seconds.
Not tainted 5.15.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:1 state:D stack:24104 pid: 25 ppid: 2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:4969 [inline]
__schedule+0xb72/0x1460 kernel/sched/core.c:6250
schedule+0x12b/0x1f0 kernel/sched/core.c:6323
usb_kill_urb+0x1d5/0x310 drivers/usb/core/urb.c:720
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
hub_port_init+0x9f1/0x2df0 drivers/usb/core/hub.c:4829
hub_port_connect+0xcf8/0x27d0 drivers/usb/core/hub.c:5280
hub_port_connect_change+0x5f9/0xc20 drivers/usb/core/hub.c:5488
port_event+0xb67/0x1220 drivers/usb/core/hub.c:5634
hub_event+0x4ed/0xe40 drivers/usb/core/hub.c:5716
process_one_work+0x853/0x1140 kernel/workqueue.c:2298
worker_thread+0xac1/0x1320 kernel/workqueue.c:2445
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
Showing all locks held in the system:
5 locks held by kworker/1:1/25:
#0: ffff888142387138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x7ca/0x1140
#1: ffffc90000dffd20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x808/0x1140 kernel/workqueue.c:2273
#2: ffff8881477dc220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
#2: ffff8881477dc220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1b2/0xe40 drivers/usb/core/hub.c:5662
#3: ffff8881477f05c0 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3086 [inline]
#3: ffff8881477f05c0 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect+0xce1/0x27d0 drivers/usb/core/hub.c:5279
#4: ffff88814774ba68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_init+0x1ef/0x2df0 drivers/usb/core/hub.c:4703
1 lock held by khungtaskd/27:
#0: ffffffff8cb1d8c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
1 lock held by in:imklog/6136:
3 locks held by kworker/1:4/8051:
#0: ffff888011464d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7ca/0x1140
#1: ffffc90015f07d20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x808/0x1140 kernel/workqueue.c:2273
#2: ffffffff8cb22128 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline]
#2: ffffffff8cb22128 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x277/0x740 kernel/rcu/tree_exp.h:836
2 locks held by kworker/1:9/8464:
1 lock held by syz-executor.4/15248:
2 locks held by syz-executor.1/15261:
2 locks held by syz-executor.2/15267:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.0-syzkaller #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:105
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:210 [inline]
watchdog+0xc82/0xcd0 kernel/hung_task.c:295
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 15267 Comm: syz-executor.2 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:match_held_lock+0x76/0xb0 kernel/locking/lockdep.c:5105
Code: 48 c7 c2 00 7b 8b 8f 48 29 d0 48 c1 f8 06 48 ba ab aa aa aa aa aa aa aa 48 0f af d0 bd 01 00 00 00 48 39 ca 74 02 31 ed 89 e8 <5b> 5d c3 e8 52 a7 10 fa 31 ed 85 c0 74 f0 83 3d ad 34 fd 03 00 75
RSP: 0018:ffffc90000dc0ac8 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 0000000000000002 RCX: ffffc90000dc0b03
RDX: 1ffff920001b816c RSI: ffff888080151688 RDI: ffff8880888961b0
RBP: 0000000000000001 R08: dffffc0000000000 R09: fffffbfff1bfa1ee
R10: fffffbfff1bfa1ee R11: 0000000000000000 R12: dffffc0000000000
R13: ffff8880888961b0 R14: 000000000000000a R15: 0000000000000046
FS: 00007f6afd661700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6afd660fe8 CR3: 000000007ab59000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
find_held_lock kernel/locking/lockdep.c:5118 [inline]
__lock_release kernel/locking/lockdep.c:5302 [inline]
lock_release+0x204/0x810 kernel/locking/lockdep.c:5645
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline]
_raw_spin_unlock_irqrestore+0x75/0x130 kernel/locking/spinlock.c:194
spin_unlock_irqrestore include/linux/spinlock.h:405 [inline]
skb_dequeue+0x10e/0x140 net/core/skbuff.c:3216
ieee80211_tasklet_handler+0x67/0x1d0 net/mac80211/main.c:228
tasklet_action_common+0x3c2/0x560 kernel/softirq.c:783
__do_softirq+0x392/0x7a3 kernel/softirq.c:558
__irq_exit_rcu+0xec/0x170 kernel/softirq.c:636
irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:217 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x4/0xa0 kernel/kcov.c:284
Code: c1 e0 03 48 83 c8 18 48 89 34 01 4c 89 44 f9 18 49 ff c2 4c 89 11 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 4c 8b 04 24 <65> 48 8b 14 25 c0 6f 02 00 65 8b 05 84 26 7e 7e a9 00 01 ff 00 74
RSP: 0018:ffffc90004b1eb20 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: 0000000000011cf8 RCX: dffffc0000000000
RDX: ffff888088895700 RSI: 0000000000000012 RDI: 0000000000000040
RBP: 0000000000000012 R08: ffffffff816a5b77 R09: fffff52000963df7
R10: fffff52000963df7 R11: 0000000000000000 R12: 1ffffffff193f385
R13: ffffffff90b88a20 R14: 1ffff92000963da0 R15: ffffc90004b1ed00
to_block kernel/printk/printk_ringbuffer.c:372 [inline]
get_data+0x1b7/0x860 kernel/printk/printk_ringbuffer.c:1220
copy_data kernel/printk/printk_ringbuffer.c:1705 [inline]
prb_read kernel/printk/printk_ringbuffer.c:1814 [inline]
_prb_read_valid+0x771/0xc40 kernel/printk/printk_ringbuffer.c:1880
prb_read_valid+0xa5/0xf0 kernel/printk/printk_ringbuffer.c:1929
console_unlock+0x2d0/0xe90 kernel/printk/printk.c:2654
vprintk_emit+0xba/0x140 kernel/printk/printk.c:2245
_printk+0xcf/0x118 kernel/printk/printk.c:2266
set_capacity_and_notify+0x2b5/0x350 block/genhd.c:87
loop_set_size drivers/block/loop.c:231 [inline]
loop_configure+0x1131/0x1740 drivers/block/loop.c:1054
lo_ioctl+0x7d4/0x1f40
blkdev_ioctl+0x3ac/0x790 block/ioctl.c:597
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl+0xfb/0x170 fs/ioctl.c:860
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: 0033:0x7f6b000eb8a7
Code: 3c 1c 48 f7 d8 49 39 c4 72 b8 e8 04 54 02 00 85 c0 78 bd 48 83 c4 08 4c 89 e0 5b 41 5c c3 0f 1f 44 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6afd660f48 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f6b00135970 RCX: 00007f6b000eb8a7
RDX: 0000000000000004 RSI: 0000000000004c00 RDI: 0000000000000005
RBP: 0000000000000005 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
R13: 0000000000000004 R14: 00000000200006b0 R15: 0000000000000032
----------------
Code disassembly (best guess):
0: 48 c7 c2 00 7b 8b 8f mov $0xffffffff8f8b7b00,%rdx
7: 48 29 d0 sub %rdx,%rax
a: 48 c1 f8 06 sar $0x6,%rax
e: 48 ba ab aa aa aa aa movabs $0xaaaaaaaaaaaaaaab,%rdx
15: aa aa aa
18: 48 0f af d0 imul %rax,%rdx
1c: bd 01 00 00 00 mov $0x1,%ebp
21: 48 39 ca cmp %rcx,%rdx
24: 74 02 je 0x28
26: 31 ed xor %ebp,%ebp
28: 89 e8 mov %ebp,%eax
* 2a: 5b pop %rbx <-- trapping instruction
2b: 5d pop %rbp
2c: c3 retq
2d: e8 52 a7 10 fa callq 0xfa10a784
32: 31 ed xor %ebp,%ebp
34: 85 c0 test %eax,%eax
36: 74 f0 je 0x28
38: 83 3d ad 34 fd 03 00 cmpl $0x0,0x3fd34ad(%rip) # 0x3fd34ec
3f: 75 .byte 0x75