INFO: task kworker/0:0:6 blocked for more than 143 seconds.
Not tainted 5.19.0-rc1-syzkaller-00024-g6bfb56e93bce #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:0 state:D stack:20920 pid: 6 ppid: 2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5116 [inline]
__schedule+0x957/0xec0 kernel/sched/core.c:6428
schedule+0xeb/0x1b0 kernel/sched/core.c:6500
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6559
__mutex_lock_common+0xecf/0x26c0 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799
add_early_randomness drivers/char/hw_random/core.c:69 [inline]
hwrng_register+0x3bf/0x680 drivers/char/hw_random/core.c:599
chaoskey_probe+0x7f0/0xb10 drivers/usb/misc/chaoskey.c:205
usb_probe_interface+0x66e/0xb60 drivers/usb/core/driver.c:396
call_driver_probe+0x96/0x250
really_probe+0x220/0x940 drivers/base/dd.c:634
__driver_probe_device+0x1f4/0x3f0 drivers/base/dd.c:764
driver_probe_device+0x50/0x240 drivers/base/dd.c:794
__device_attach_driver+0x273/0x3d0 drivers/base/dd.c:917
bus_for_each_drv+0x18a/0x210 drivers/base/bus.c:427
__device_attach+0x372/0x5a0 drivers/base/dd.c:989
bus_probe_device+0xb8/0x1f0 drivers/base/bus.c:487
device_add+0xb20/0xf90 drivers/base/core.c:3417
usb_set_configuration+0x1a5f/0x20e0 drivers/usb/core/message.c:2170
usb_generic_driver_probe+0x83/0x140 drivers/usb/core/generic.c:238
usb_probe_device+0x131/0x260 drivers/usb/core/driver.c:293
call_driver_probe+0x96/0x250
really_probe+0x220/0x940 drivers/base/dd.c:634
__driver_probe_device+0x1f4/0x3f0 drivers/base/dd.c:764
driver_probe_device+0x50/0x240 drivers/base/dd.c:794
__device_attach_driver+0x273/0x3d0 drivers/base/dd.c:917
bus_for_each_drv+0x18a/0x210 drivers/base/bus.c:427
__device_attach+0x372/0x5a0 drivers/base/dd.c:989
bus_probe_device+0xb8/0x1f0 drivers/base/bus.c:487
device_add+0xb20/0xf90 drivers/base/core.c:3417
usb_new_device+0xbfc/0x18a0 drivers/usb/core/hub.c:2566
hub_port_connect+0x106b/0x2930 drivers/usb/core/hub.c:5363
hub_port_connect_change+0x619/0xbe0 drivers/usb/core/hub.c:5507
port_event+0xeb7/0x1390 drivers/usb/core/hub.c:5663
hub_event+0x5be/0xd70 drivers/usb/core/hub.c:5745
process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
INFO: task syz-executor.1:13977 blocked for more than 143 seconds.
Not tainted 5.19.0-rc1-syzkaller-00024-g6bfb56e93bce #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:27328 pid:13977 ppid: 3638 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5116 [inline]
__schedule+0x957/0xec0 kernel/sched/core.c:6428
schedule+0xeb/0x1b0 kernel/sched/core.c:6500
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6559
__mutex_lock_common+0xecf/0x26c0 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799
misc_open+0x57/0x3c0 drivers/char/misc.c:107
chrdev_open+0x5fb/0x680 fs/char_dev.c:414
do_dentry_open+0x789/0x1040 fs/open.c:848
do_open fs/namei.c:3520 [inline]
path_openat+0x26c0/0x2ec0 fs/namei.c:3653
do_filp_open+0x277/0x4f0 fs/namei.c:3680
do_sys_openat2+0x13b/0x500 fs/open.c:1278
do_sys_open fs/open.c:1294 [inline]
__do_sys_openat fs/open.c:1310 [inline]
__se_sys_openat fs/open.c:1305 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1305
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7fc13dc89109
RSP: 002b:00007fc13ed12168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fc13dd9bf60 RCX: 00007fc13dc89109
RDX: 0000000000000000 RSI: 0000000020000140 RDI: ffffffffffffff9c
RBP: 00007fc13dce30ad R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffde59da48f R14: 00007fc13ed12300 R15: 0000000000022000
Showing all locks held in the system:
6 locks held by kworker/0:0/6:
#0: ffff888017b28538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc900000b7d00 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffff8881477cd190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
#2: ffff8881477cd190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1bf/0xd70 drivers/usb/core/hub.c:5691
#3: ffff88802c344190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
#3: ffff88802c344190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8a/0x5a0 drivers/base/dd.c:964
#4: ffff88802f012118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
#4: ffff88802f012118 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8a/0x5a0 drivers/base/dd.c:964
#5: ffffffff8d24c988 (reading_mutex){+.+.}-{3:3}, at: add_early_randomness drivers/char/hw_random/core.c:69 [inline]
#5: ffffffff8d24c988 (reading_mutex){+.+.}-{3:3}, at: hwrng_register+0x3bf/0x680 drivers/char/hw_random/core.c:599
2 locks held by pr/ttyS0/16:
1 lock held by khungtaskd/29:
#0: ffffffff8cb1eba0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
5 locks held by kworker/u4:2/42:
1 lock held by hwrng/756:
#0: ffffffff8d24c988 (reading_mutex){+.+.}-{3:3}, at: hwrng_fillfn+0xec/0x470 drivers/char/hw_random/core.c:503
2 locks held by getty/3294:
#0: ffff88814a953098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc90002cd62e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6e8/0x1e50 drivers/tty/n_tty.c:2124
3 locks held by udevd/3650:
#0: ffff88807cea1888 (&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:197 [inline]
#0: ffff88807cea1888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x19b/0x570 fs/kernfs/file.c:236
#1: ffff88807c1d2578 (kn->active#86){++++}-{0:0}, at: kernfs_file_read_iter fs/kernfs/file.c:198 [inline]
#1: ffff88807c1d2578 (kn->active#86){++++}-{0:0}, at: kernfs_fop_read_iter+0x1b3/0x570 fs/kernfs/file.c:236
#2: ffff88802c344190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:840 [inline]
#2: ffff88802c344190 (&dev->mutex){....}-{3:3}, at: read_descriptors+0x30/0x390 drivers/usb/core/sysfs.c:873
3 locks held by kworker/u4:17/3983:
2 locks held by syz-executor.4/13973:
#0: ffffffff8d248b68 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x57/0x3c0 drivers/char/misc.c:107
#1: ffffffff8c9d5048 (system_transition_mutex){+.+.}-{3:3}, at: snapshot_open+0x23/0x260 kernel/power/user.c:54
1 lock held by syz-executor.1/13977:
#0: ffffffff8d248b68 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x57/0x3c0 drivers/char/misc.c:107
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 5.19.0-rc1-syzkaller-00024-g6bfb56e93bce #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+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x473/0x4a0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x168/0x280 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xd18/0xd60 kernel/hung_task.c:378
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 1208 Comm: kworker/u4:5 Not tainted 5.19.0-rc1-syzkaller-00024-g6bfb56e93bce #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: phy10 ieee80211_iface_work
RIP: 0010:hlock_class kernel/locking/lockdep.c:227 [inline]
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4752 [inline]
RIP: 0010:__lock_acquire+0x785/0x1f80 kernel/locking/lockdep.c:5003
Code: 00 00 41 8b 2f 81 e5 ff 1f 00 00 89 e8 c1 e8 06 48 8d 3c c5 c0 4f d4 8f be 08 00 00 00 e8 23 b4 72 00 48 0f a3 2d fb 80 6c 0e <72> 39 48 ba 00 00 00 00 00 fc ff df 48 8b 44 24 50 0f b6 04 10 84
RSP: 0018:ffffc9000570f728 EFLAGS: 00000057
RAX: 0000000000000001 RBX: ffff88802141c5a8 RCX: ffffffff8167cebd
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8fd450b8
RBP: 00000000000007e1 R08: dffffc0000000000 R09: fffffbfff1fa8a18
R10: fffffbfff1fa8a18 R11: 1ffffffff1fa8a17 R12: 0000000000000001
R13: 0000000000000004 R14: 0000000000000001 R15: ffff88802141c5a8
FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00df35608 CR3: 000000000c88e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5665
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
_raw_spin_lock_bh+0x31/0x40 kernel/locking/spinlock.c:178
spin_lock_bh include/linux/spinlock.h:354 [inline]
cfg80211_put_bss+0x39/0x230 net/wireless/scan.c:2570
ieee80211_rx_bss_info net/mac80211/ibss.c:1191 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1610 [inline]
ieee80211_ibss_rx_queued_mgmt+0x182c/0x28c0 net/mac80211/ibss.c:1639
ieee80211_iface_process_skb net/mac80211/iface.c:1527 [inline]
ieee80211_iface_work+0x757/0xcd0 net/mac80211/iface.c:1581
process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 41 8b 2f mov (%r15),%ebp
5: 81 e5 ff 1f 00 00 and $0x1fff,%ebp
b: 89 e8 mov %ebp,%eax
d: c1 e8 06 shr $0x6,%eax
10: 48 8d 3c c5 c0 4f d4 lea -0x702bb040(,%rax,8),%rdi
17: 8f
18: be 08 00 00 00 mov $0x8,%esi
1d: e8 23 b4 72 00 callq 0x72b445
22: 48 0f a3 2d fb 80 6c bt %rbp,0xe6c80fb(%rip) # 0xe6c8125
29: 0e
* 2a: 72 39 jb 0x65 <-- trapping instruction
2c: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx
33: fc ff df
36: 48 8b 44 24 50 mov 0x50(%rsp),%rax
3b: 0f b6 04 10 movzbl (%rax,%rdx,1),%eax
3f: 84 .byte 0x84