INFO: task kworker/1:0:23 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:0 state:D
stack:20632 pid:23 tgid:23 ppid:2 task_flags:0x4288060 flags:0x00080000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x1325/0x47d0 kernel/sched/core.c:7234
__schedule_loop kernel/sched/core.c:7311 [inline]
schedule+0xdd/0x2c0 kernel/sched/core.c:7326
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7383
rwsem_down_write_slowpath+0x4c2/0x12b0 kernel/locking/rwsem.c:1215
__down_write_common kernel/locking/rwsem.c:1347 [inline]
__down_write kernel/locking/rwsem.c:1356 [inline]
down_write+0x1c7/0x1f0 kernel/locking/rwsem.c:1632
kernfs_remove_by_name_ns+0x51/0x120 fs/kernfs/dir.c:1792
remove_compat_control_link.part.0+0xc7/0x100 drivers/gpu/drm/drm_drv.c:1034
remove_compat_control_link drivers/gpu/drm/drm_drv.c:1167 [inline]
drm_dev_unregister+0x1e3/0x2c0 drivers/gpu/drm/drm_drv.c:1163
drm_dev_unplug+0x52/0xc0 drivers/gpu/drm/drm_drv.c:497
udl_usb_disconnect+0x3a/0x50 drivers/gpu/drm/udl/udl_drv.c:115
usb_unbind_interface+0x1dd/0x9e0 drivers/usb/core/driver.c:461
device_remove drivers/base/dd.c:618 [inline]
device_remove+0x12a/0x180 drivers/base/dd.c:610
__device_release_driver drivers/base/dd.c:1349 [inline]
device_release_driver_internal+0x44e/0x620 drivers/base/dd.c:1372
bus_remove_device+0x2bc/0x560 drivers/base/bus.c:664
device_del+0x376/0x9b0 drivers/base/core.c:3961
usb_disable_device+0x367/0x810 drivers/usb/core/message.c:1478
usb_disconnect+0x2e2/0x9a0 drivers/usb/core/hub.c:2348
hub_port_connect drivers/usb/core/hub.c:5410 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5710 [inline]
port_event drivers/usb/core/hub.c:5874 [inline]
hub_event+0x1d0c/0x4af0 drivers/usb/core/hub.c:5956
process_one_work+0xa23/0x1940 kernel/workqueue.c:3322
process_scheduled_works kernel/workqueue.c:3405 [inline]
worker_thread+0x5ef/0xe50 kernel/workqueue.c:3486
kthread+0x370/0x450 kernel/kthread.c:436
ret_from_fork+0x69a/0xc80 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
INFO: task kworker/1:2:771 blocked for more than 144 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:2 state:D
stack:21368 pid:771 tgid:771 ppid:2 task_flags:0x4288060 flags:0x00080000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x1325/0x47d0 kernel/sched/core.c:7234
__schedule_loop kernel/sched/core.c:7311 [inline]
schedule+0xdd/0x2c0 kernel/sched/core.c:7326
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7383
rwsem_down_write_slowpath+0x4c2/0x12b0 kernel/locking/rwsem.c:1215
__down_write_common kernel/locking/rwsem.c:1347 [inline]
__down_write kernel/locking/rwsem.c:1356 [inline]
down_write+0x1c7/0x1f0 kernel/locking/rwsem.c:1632
kernfs_remove fs/kernfs/dir.c:1623 [inline]
kernfs_remove+0x43/0x70 fs/kernfs/dir.c:1613
sysfs_remove_dir+0xc8/0x110 fs/sysfs/dir.c:101
__kobject_del+0xe2/0x220 lib/kobject.c:604
kobject_del lib/kobject.c:627 [inline]
kobject_del+0x3f/0x60 lib/kobject.c:619
device_del+0x630/0x9b0 drivers/base/core.c:3981
hid_remove_device drivers/hid/hid-core.c:3071 [inline]
hid_destroy_device+0x19c/0x240 drivers/hid/hid-core.c:3093
usbhid_disconnect+0xa0/0xe0 drivers/hid/usbhid/hid-core.c:1479
usb_unbind_interface+0x1dd/0x9e0 drivers/usb/core/driver.c:461
device_remove drivers/base/dd.c:618 [inline]
device_remove+0x12a/0x180 drivers/base/dd.c:610
__device_release_driver drivers/base/dd.c:1349 [inline]
device_release_driver_internal+0x44e/0x620 drivers/base/dd.c:1372
bus_remove_device+0x2bc/0x560 drivers/base/bus.c:664
device_del+0x376/0x9b0 drivers/base/core.c:3961
usb_disable_device+0x367/0x810 drivers/usb/core/message.c:1478
usb_disconnect+0x2e2/0x9a0 drivers/usb/core/hub.c:2348
hub_port_connect drivers/usb/core/hub.c:5410 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5710 [inline]
port_event drivers/usb/core/hub.c:5874 [inline]
hub_event+0x1d0c/0x4af0 drivers/usb/core/hub.c:5956
process_one_work+0xa23/0x1940 kernel/workqueue.c:3322
process_scheduled_works kernel/workqueue.c:3405 [inline]
worker_thread+0x5ef/0xe50 kernel/workqueue.c:3486
kthread+0x370/0x450 kernel/kthread.c:436
ret_from_fork+0x69a/0xc80 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
INFO: task udevd:10235 blocked for more than 145 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd state:D
stack:24648 pid:10235 tgid:10235 ppid:2856 task_flags:0x400140 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x1325/0x47d0 kernel/sched/core.c:7234
__schedule_loop kernel/sched/core.c:7311 [inline]
schedule+0xdd/0x2c0 kernel/sched/core.c:7326
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7383
rwsem_down_read_slowpath+0x5af/0xb40 kernel/locking/rwsem.c:1114
__down_read_common kernel/locking/rwsem.c:1291 [inline]
__down_read kernel/locking/rwsem.c:1304 [inline]
down_read+0xed/0x4c0 kernel/locking/rwsem.c:1576
kernfs_dop_revalidate+0xa5/0x7e0 fs/kernfs/dir.c:1217
d_revalidate fs/namei.c:1035 [inline]
d_revalidate fs/namei.c:1031 [inline]
lookup_fast+0x3c7/0x600 fs/namei.c:1881
walk_component fs/namei.c:2278 [inline]
link_path_walk+0x7d4/0x1cc0 fs/namei.c:2656
path_openat+0x1c9/0x4280 fs/namei.c:4859
do_file_open+0x20e/0x430 fs/namei.c:4892
do_sys_openat2+0x10f/0x1e0 fs/open.c:1368
do_sys_open fs/open.c:1374 [inline]
__do_sys_openat fs/open.c:1390 [inline]
__se_sys_openat fs/open.c:1385 [inline]
__x64_sys_openat+0x12d/0x210 fs/open.c:1385
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x10b/0x7f0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcd22b5c407
RSP: 002b:00007ffc735c27f0 EFLAGS: 00000202
ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fcd22a6e880 RCX: 00007fcd22b5c407
RDX: 0000000000080000 RSI: 00007ffc735c2970 RDI: ffffffffffffff9c
RBP: 0000000000000008 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 00005566b65a67f5
R13: 00005566b65a67f5 R14: 0000000000000001 R15: 0000000000000000
INFO: task udevd:10237 blocked for more than 145 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd state:D
stack:24200 pid:10237 tgid:10237 ppid:2856 task_flags:0x400140 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x1325/0x47d0 kernel/sched/core.c:7234
__schedule_loop kernel/sched/core.c:7311 [inline]
schedule+0xdd/0x2c0 kernel/sched/core.c:7326
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7383
rwsem_down_read_slowpath+0x5af/0xb40 kernel/locking/rwsem.c:1114
__down_read_common kernel/locking/rwsem.c:1291 [inline]
__down_read kernel/locking/rwsem.c:1304 [inline]
down_read+0xed/0x4c0 kernel/locking/rwsem.c:1576
kernfs_dop_revalidate+0xa5/0x7e0 fs/kernfs/dir.c:1217
d_revalidate fs/namei.c:1035 [inline]
d_revalidate fs/namei.c:1031 [inline]
lookup_fast+0x3c7/0x600 fs/namei.c:1881
walk_component fs/namei.c:2278 [inline]
link_path_walk+0x7d4/0x1cc0 fs/namei.c:2656
path_openat+0x1c9/0x4280 fs/namei.c:4859
do_file_open+0x20e/0x430 fs/namei.c:4892
do_sys_openat2+0x10f/0x1e0 fs/open.c:1368
do_sys_open fs/open.c:1374 [inline]
__do_sys_openat fs/open.c:1390 [inline]
__se_sys_openat fs/open.c:1385 [inline]
__x64_sys_openat+0x12d/0x210 fs/open.c:1385
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x10b/0x7f0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcd22b5c407
RSP: 002b:00007ffc735be390 EFLAGS: 00000202
ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fcd22a6e880 RCX: 00007fcd22b5c407
RDX: 0000000000080000 RSI: 00007ffc735be510 RDI: ffffffffffffff9c
RBP: 0000000000000008 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 00005566b65a67f5
R13: 00005566b65a67f5 R14: 0000000000000001 R15: 00005566b65c1140
INFO: task kworker/1:8:11101 blocked for more than 146 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:8 state:D
stack:21880 pid:11101 tgid:11101 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: events kernfs_notify_workfn
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x1325/0x47d0 kernel/sched/core.c:7234
__schedule_loop kernel/sched/core.c:7311 [inline]
schedule+0xdd/0x2c0 kernel/sched/core.c:7326
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7383
rwsem_down_read_slowpath+0x5af/0xb40 kernel/locking/rwsem.c:1114
__down_read_common kernel/locking/rwsem.c:1291 [inline]
__down_read kernel/locking/rwsem.c:1304 [inline]
down_read+0xed/0x4c0 kernel/locking/rwsem.c:1576
kernfs_notify_workfn+0xff/0x5f0 fs/kernfs/file.c:926
process_one_work+0xa23/0x1940 kernel/workqueue.c:3322
process_scheduled_works kernel/workqueue.c:3405 [inline]
worker_thread+0x5ef/0xe50 kernel/workqueue.c:3486
kthread+0x370/0x450 kernel/kthread.c:436
ret_from_fork+0x69a/0xc80 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
INFO: task kworker/1:4:13959 blocked for more than 146 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:4 state:D
stack:22312 pid:13959 tgid:13959 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x1325/0x47d0 kernel/sched/core.c:7234
__schedule_loop kernel/sched/core.c:7311 [inline]
schedule+0xdd/0x2c0 kernel/sched/core.c:7326
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7383
rwsem_down_write_slowpath+0x4c2/0x12b0 kernel/locking/rwsem.c:1215
__down_write_common kernel/locking/rwsem.c:1347 [inline]
__down_write kernel/locking/rwsem.c:1356 [inline]
down_write+0x1c7/0x1f0 kernel/locking/rwsem.c:1632
kernfs_remove_by_name_ns+0x51/0x120 fs/kernfs/dir.c:1792
usb_disconnect+0x488/0x9a0 drivers/usb/core/hub.c:2356
hub_port_connect drivers/usb/core/hub.c:5410 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5710 [inline]
port_event drivers/usb/core/hub.c:5874 [inline]
hub_event+0x1d0c/0x4af0 drivers/usb/core/hub.c:5956
process_one_work+0xa23/0x1940 kernel/workqueue.c:3322
process_scheduled_works kernel/workqueue.c:3405 [inline]
worker_thread+0x5ef/0xe50 kernel/workqueue.c:3486
kthread+0x370/0x450 kernel/kthread.c:436
ret_from_fork+0x69a/0xc80 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
INFO: task syz-executor:15803 blocked for more than 147 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D
stack:24520 pid:15803 tgid:15803 ppid:1 task_flags:0x400140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x1325/0x47d0 kernel/sched/core.c:7234
__schedule_loop kernel/sched/core.c:7311 [inline]
schedule+0xdd/0x2c0 kernel/sched/core.c:7326
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7383
rwsem_down_read_slowpath+0x5af/0xb40 kernel/locking/rwsem.c:1114
__down_read_common kernel/locking/rwsem.c:1291 [inline]
__down_read kernel/locking/rwsem.c:1304 [inline]
down_read+0xed/0x4c0 kernel/locking/rwsem.c:1576
kernfs_dop_revalidate+0xa5/0x7e0 fs/kernfs/dir.c:1217
d_revalidate fs/namei.c:1035 [inline]
d_revalidate fs/namei.c:1031 [inline]
lookup_fast+0x3c7/0x600 fs/namei.c:1881
walk_component fs/namei.c:2278 [inline]
link_path_walk+0x7d4/0x1cc0 fs/namei.c:2656
path_openat+0x1c9/0x4280 fs/namei.c:4859
do_file_open+0x20e/0x430 fs/namei.c:4892
do_sys_openat2+0x10f/0x1e0 fs/open.c:1368
do_sys_open fs/open.c:1374 [inline]
__do_sys_openat fs/open.c:1390 [inline]
__se_sys_openat fs/open.c:1385 [inline]
__x64_sys_openat+0x12d/0x210 fs/open.c:1385
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x10b/0x7f0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fec813dd1bc
RSP: 002b:00007fff44158e90 EFLAGS: 00000206
ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000061 RCX: 00007fec813dd1bc
RDX: 0000000000090800 RSI: 00007fec814737f1 RDI: 00000000ffffff9c
RBP: 00007fff44158f3c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000023
R13: 0000000000000000 R14: 000000000016d7f8 R15: 00007fff44158f90
INFO: task syz-executor:16385 blocked for more than 148 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D
stack:24040 pid:16385 tgid:16385 ppid:1 task_flags:0x400140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x1325/0x47d0 kernel/sched/core.c:7234
__schedule_loop kernel/sched/core.c:7311 [inline]
schedule+0xdd/0x2c0 kernel/sched/core.c:7326
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7383
rwsem_down_read_slowpath+0x5af/0xb40 kernel/locking/rwsem.c:1114
__down_read_common kernel/locking/rwsem.c:1291 [inline]
__down_read kernel/locking/rwsem.c:1304 [inline]
down_read+0xed/0x4c0 kernel/locking/rwsem.c:1576
kernfs_dop_revalidate+0xa5/0x7e0 fs/kernfs/dir.c:1217
d_revalidate fs/namei.c:1035 [inline]
d_revalidate fs/namei.c:1031 [inline]
lookup_fast+0x3c7/0x600 fs/namei.c:1881
walk_component fs/namei.c:2278 [inline]
link_path_walk+0x7d4/0x1cc0 fs/namei.c:2656
path_openat+0x1c9/0x4280 fs/namei.c:4859
do_file_open+0x20e/0x430 fs/namei.c:4892
do_sys_openat2+0x10f/0x1e0 fs/open.c:1368
do_sys_open fs/open.c:1374 [inline]
__do_sys_openat fs/open.c:1390 [inline]
__se_sys_openat fs/open.c:1385 [inline]
__x64_sys_openat+0x12d/0x210 fs/open.c:1385
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x10b/0x7f0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5eba8dd1bc
RSP: 002b:00007fffeac05250 EFLAGS: 00000206
ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000045 RCX: 00007f5eba8dd1bc
RDX: 0000000000090800 RSI: 00007f5eba9737f1 RDI: 00000000ffffff9c
RBP: 00007fffeac052fc R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000019
R13: 0000000000000000 R14: 000000000016d7a1 R15: 00007fffeac05350
INFO: task syz-executor:16958 blocked for more than 148 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D
stack:23976 pid:16958 tgid:16958 ppid:1 task_flags:0x400140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x1325/0x47d0 kernel/sched/core.c:7234
__schedule_loop kernel/sched/core.c:7311 [inline]
schedule+0xdd/0x2c0 kernel/sched/core.c:7326
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7383
rwsem_down_read_slowpath+0x5af/0xb40 kernel/locking/rwsem.c:1114
__down_read_common kernel/locking/rwsem.c:1291 [inline]
__down_read kernel/locking/rwsem.c:1304 [inline]
down_read+0xed/0x4c0 kernel/locking/rwsem.c:1576
kernfs_dop_revalidate+0xa5/0x7e0 fs/kernfs/dir.c:1217
d_revalidate fs/namei.c:1035 [inline]
d_revalidate fs/namei.c:1031 [inline]
lookup_fast+0x3c7/0x600 fs/namei.c:1881
walk_component fs/namei.c:2278 [inline]
link_path_walk+0x7d4/0x1cc0 fs/namei.c:2656
path_openat+0x1c9/0x4280 fs/namei.c:4859
do_file_open+0x20e/0x430 fs/namei.c:4892
do_sys_openat2+0x10f/0x1e0 fs/open.c:1368
do_sys_open fs/open.c:1374 [inline]
__do_sys_openat fs/open.c:1390 [inline]
__se_sys_openat fs/open.c:1385 [inline]
__x64_sys_openat+0x12d/0x210 fs/open.c:1385
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x10b/0x7f0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe97a43d1bc
RSP: 002b:00007ffc90a115d0 EFLAGS: 00000206
ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000029 RCX: 00007fe97a43d1bc
RDX: 0000000000090800 RSI: 00007fe97a4d37f1 RDI: 00000000ffffff9c
RBP: 00007ffc90a1167c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000010
R13: 0000000000000000 R14: 000000000016d7a6 R15: 00007ffc90a116d0
INFO: task syz-executor:17516 blocked for more than 149 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D
stack:22632 pid:17516 tgid:17516 ppid:1 task_flags:0x400140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x1325/0x47d0 kernel/sched/core.c:7234
__schedule_loop kernel/sched/core.c:7311 [inline]
schedule+0xdd/0x2c0 kernel/sched/core.c:7326
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7383
rwsem_down_read_slowpath+0x5af/0xb40 kernel/locking/rwsem.c:1114
__down_read_common kernel/locking/rwsem.c:1291 [inline]
__down_read kernel/locking/rwsem.c:1304 [inline]
down_read+0xed/0x4c0 kernel/locking/rwsem.c:1576
kernfs_dop_revalidate+0xa5/0x7e0 fs/kernfs/dir.c:1217
d_revalidate fs/namei.c:1035 [inline]
d_revalidate fs/namei.c:1031 [inline]
lookup_fast+0x3c7/0x600 fs/namei.c:1881
walk_component fs/namei.c:2278 [inline]
link_path_walk+0x7d4/0x1cc0 fs/namei.c:2656
path_openat+0x1c9/0x4280 fs/namei.c:4859
do_file_open+0x20e/0x430 fs/namei.c:4892
do_sys_openat2+0x10f/0x1e0 fs/open.c:1368
do_sys_open fs/open.c:1374 [inline]
__do_sys_openat fs/open.c:1390 [inline]
__se_sys_openat fs/open.c:1385 [inline]
__x64_sys_openat+0x12d/0x210 fs/open.c:1385
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x10b/0x7f0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f817f51d1bc
RSP: 002b:00007ffeaf028c30 EFLAGS: 00000206
ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000000000000001d RCX: 00007f817f51d1bc
RDX: 0000000000090800 RSI: 00007f817f5b37f1 RDI: 00000000ffffff9c
RBP: 00007ffeaf028cdc R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000008
R13: 0000000000000000 R14: 000000000016d7bb R15: 00007ffeaf028d30
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
INFO: task modprobe:18670 blocked for more than 150 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:modprobe state:D
stack:26056 pid:18670 tgid:18670 ppid:8059 task_flags:0x400000 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x1325/0x47d0 kernel/sched/core.c:7234
__schedule_loop kernel/sched/core.c:7311 [inline]
schedule+0xdd/0x2c0 kernel/sched/core.c:7326
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7383
rwsem_down_read_slowpath+0x5af/0xb40 kernel/locking/rwsem.c:1114
__down_read_common kernel/locking/rwsem.c:1291 [inline]
__down_read kernel/locking/rwsem.c:1304 [inline]
down_read+0xed/0x4c0 kernel/locking/rwsem.c:1576
kernfs_dop_revalidate+0xa5/0x7e0 fs/kernfs/dir.c:1217
d_revalidate fs/namei.c:1035 [inline]
d_revalidate fs/namei.c:1031 [inline]
lookup_fast+0x3c7/0x600 fs/namei.c:1881
walk_component fs/namei.c:2278 [inline]
link_path_walk+0x7d4/0x1cc0 fs/namei.c:2656
path_lookupat+0x74/0xc40 fs/namei.c:2812
filename_lookup+0x202/0x590 fs/namei.c:2842
user_statfs+0xb7/0x1a0 fs/statfs.c:104
__do_sys_statfs+0x8d/0x100 fs/statfs.c:194
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x10b/0x7f0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbc3fdd0487
RSP: 002b:00007ffc66279af8 EFLAGS: 00000246
ORIG_RAX: 0000000000000089
RAX: ffffffffffffffda RBX: 00007fbc3fca72fe RCX: 00007fbc3fdd0487
RDX: 00007fbc3fcb01d4 RSI: 00007ffc66279b80 RDI: 00007fbc3fca72fe
RBP: 00007ffc66279b80 R08: 00007fbc3ffbaaf8 R09: 0000000000000000
R10: 00007ffc66279930 R11: 0000000000000246 R12: 00007ffc66279d08
R13: 00007ffc66279d30 R14: 00007fbc3fcae4d0 R15: 0000000000000000
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
INFO: task syz.2.3104:18673 blocked for more than 150 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.3104 state:D
stack:29176 pid:18673 tgid:18671 ppid:16385 task_flags:0x400040 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x1325/0x47d0 kernel/sched/core.c:7234
__schedule_loop kernel/sched/core.c:7311 [inline]
schedule+0xdd/0x2c0 kernel/sched/core.c:7326
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7383
rwsem_down_write_slowpath+0x4c2/0x12b0 kernel/locking/rwsem.c:1215
__down_write_common kernel/locking/rwsem.c:1347 [inline]
__down_write kernel/locking/rwsem.c:1356 [inline]
down_write+0x1c7/0x1f0 kernel/locking/rwsem.c:1632
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
Showing all locks held in the system:
3 locks held by kworker/1:0/23:
1 lock held by khungtaskd/30:
#0:
ffffffff896e2b40 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
ffffffff896e2b40 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
ffffffff896e2b40 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x3d/0x184 kernel/locking/lockdep.c:6775
5 locks held by kworker/1:2/771:
2 locks held by getty/2918:
#0:
ffff8881093500a0
(&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1:
ffffc900000452e8
(
&ldata->atomic_read_lock
){+.+.}-{4:4}, at: n_tty_read+0x419/0x14e0 drivers/tty/n_tty.c:2211
2 locks held by kworker/0:5/5233:
6 locks held by kworker/0:7/5426:
3 locks held by kworker/u8:0/8059:
#0:
ffff888108f51140
(
(wq_completion)ipv6_addrconf
){+.+.}-{0:0}
, at: process_one_work+0x12b1/0x1940 kernel/workqueue.c:3297
#1: ffffc90015597d18 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x988/0x1940 kernel/workqueue.c:3298
#2:
ffffffff8ab23000
(
rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
rtnl_mutex){+.+.}-{4:4}, at: addrconf_verify_work+0x12/0x30 net/ipv6/addrconf.c:4769
4 locks held by udevd/9290:
#0: ffff88811679ef38
(
&p->lock
){+.+.}-{4:4}, at: seq_read_iter+0xe1/0x1270 fs/seq_file.c:183
#1:
ffff8881196da880
(&of->mutex){+.+.}-{4:4}, at: kernfs_seq_start+0x4f/0x2a0 fs/kernfs/file.c:165
#2:
ffff8881122dc2d8
(
kn->active
#9
){++++}-{0:0}
, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
, at: kernfs_seq_start+0xbc/0x2a0 fs/kernfs/file.c:166
#3:
ffff888117d171d8
(
&dev->mutex
){....}-{4:4}
, at: device_lock_interruptible include/linux/device.h:1107 [inline]
, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142
5 locks held by kworker/u8:2/10774:
#0:
ffff888100e98940
(
(wq_completion)netns
){+.+.}-{0:0}
, at: process_one_work+0x12b1/0x1940 kernel/workqueue.c:3297
#1:
ffffc900154dfd18
(
net_cleanup_work
){+.+.}-{0:0}
, at: process_one_work+0x988/0x1940 kernel/workqueue.c:3298
#2:
ffffffff8ab0a5c8
(
pernet_ops_rwsem
){++++}-{4:4}
, at: cleanup_net+0xb8/0x920 net/core/net_namespace.c:673
#3:
ffffffff8ab23000
(
rtnl_mutex
){+.+.}-{4:4}
, at: ops_exit_rtnl_list net/core/net_namespace.c:173 [inline]
, at: ops_undo_list+0x7ec/0xab0 net/core/net_namespace.c:248
#4:
ffffffff896ee5e8
(
rcu_state.exp_mutex
){+.+.}-{4:4}
, at: exp_funnel_lock+0x27f/0x3c0 kernel/rcu/tree_exp.h:311
2 locks held by kworker/0:2/13004:
5 locks held by kworker/1:4/13959:
8 locks held by syz-executor/15803:
2 locks held by kworker/u8:1/15973:
#0:
ffff8881000ac140 (
(wq_completion)events_unbound
){+.+.}-{0:0}
, at: process_one_work+0x12b1/0x1940 kernel/workqueue.c:3297
#1:
ffffc90014ccfd18
(
(work_completion)(&sub_info->work)
){+.+.}-{0:0}
, at: process_one_work+0x988/0x1940 kernel/workqueue.c:3298
2 locks held by kworker/u8:4/16387:
#0: ffff8881000ac140
(
(wq_completion)events_unbound){+.+.}-{0:0}
, at: process_one_work+0x12b1/0x1940 kernel/workqueue.c:3297
#1:
ffffc90013b0fd18
(
(work_completion)(&sub_info->work)
){+.+.}-{0:0}
, at: process_one_work+0x988/0x1940 kernel/workqueue.c:3298
1 lock held by syz-executor/16958:
#0: ffffffff896ee5e8
(
rcu_state.exp_mutex){+.+.}-{4:4}
, at: exp_funnel_lock+0x19e/0x3c0 kernel/rcu/tree_exp.h:343
2 locks held by syz-executor/17516:
2 locks held by syz.0.3107/18678:
#0:
ffff888100e87aa0
(&root->kernfs_supers_rwsem
){++++}-{4:4}
, at: kernfs_remove_by_name_ns+0x49/0x120 fs/kernfs/dir.c:1791
#1:
ffff888100e87980 (
&root->kernfs_rwsem
){++++}-{4:4}
, at: kernfs_remove_by_name_ns+0x51/0x120 fs/kernfs/dir.c:1792
1 lock held by syz-executor/18685:
#0:
ffff888100e87980
(
&root->kernfs_rwsem){++++}-{4:4}
, at: kernfs_dop_revalidate+0xa5/0x7e0 fs/kernfs/dir.c:1217