INFO: task kworker/u8:3:42 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:3 state:D
stack:23568 pid:42 tgid:42 ppid:2 task_flags:0x4208160 flags:0x00080000
Workqueue: netns cleanup_net
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
exp_funnel_lock+0x344/0x3c0 kernel/rcu/tree_exp.h:334
synchronize_rcu_expedited+0x298/0x450 kernel/rcu/tree_exp.h:961
ops_undo_list+0x64c/0xab0 net/core/net_namespace.c:243
cleanup_net+0x499/0x920 net/core/net_namespace.c:702
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 jbd2/sda1-8:2819 blocked in I/O wait for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jbd2/sda1-8 state:D
stack:25976 pid:2819 tgid:2819 ppid:2 task_flags:0x240040 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
io_schedule+0x8a/0xf0 kernel/sched/core.c:8154
bit_wait_io+0xd/0xe0 kernel/sched/wait_bit.c:250
__wait_on_bit+0x65/0x180 kernel/sched/wait_bit.c:52
out_of_line_wait_on_bit+0xdc/0x110 kernel/sched/wait_bit.c:67
wait_on_bit_io include/linux/wait_bit.h:105 [inline]
__wait_on_buffer+0x64/0x70 fs/buffer.c:118
wait_on_buffer include/linux/buffer_head.h:422 [inline]
journal_wait_on_commit_record fs/jbd2/commit.c:170 [inline]
jbd2_journal_commit_transaction+0x4837/0x6700 fs/jbd2/commit.c:907
kjournald2+0x200/0x760 fs/jbd2/journal.c:199
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:2858 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd state:D
stack:23544 pid:2858 tgid:2858 ppid:1 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_iop_lookup+0x5b/0x2d0 fs/kernfs/dir.c:1259
lookup_open fs/namei.c:4481 [inline]
open_last_lookups fs/namei.c:4608 [inline]
path_openat+0x241f/0x4280 fs/namei.c:4860
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: 0033:0x7f049cd65407
RSP: 002b:00007ffd3b107d90 EFLAGS: 00000202 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f049cc77880 RCX: 00007f049cd65407
RDX: 0000000000080000 RSI: 00007ffd3b107f10 RDI: ffffffffffffff9c
RBP: 0000000000000008 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000563b825747f5
R13: 0000563b825747f5 R14: 0000000000000001 R15: 0000000000000000
INFO: task syz-executor:2974 blocked for more than 143 seconds.
Not tainted syzkaller #0
Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D
stack:23544 pid:2974 tgid:2974 ppid:1 task_flags:0x40054c flags:0x00080003
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
exp_funnel_lock+0x344/0x3c0 kernel/rcu/tree_exp.h:334
synchronize_rcu_expedited+0x298/0x450 kernel/rcu/tree_exp.h:961
namespace_unlock+0x54d/0x920 fs/namespace.c:1724
class_namespace_excl_destructor fs/namespace.c:90 [inline]
put_mnt_ns+0x290/0x300 fs/namespace.c:6283
nsproxy_free kernel/nsproxy.c:66 [inline]
deactivate_nsproxy kernel/nsproxy.c:80 [inline]
put_nsproxy include/linux/nsproxy.h:110 [inline]
put_nsproxy include/linux/nsproxy.h:107 [inline]
switch_task_namespaces+0x133/0x2c0 kernel/nsproxy.c:260
do_exit+0x8cd/0x2a50 kernel/exit.c:1008
do_group_exit+0xd5/0x2a0 kernel/exit.c:1152
get_signal+0x1ec7/0x21e0 kernel/signal.c:3046
arch_do_signal_or_restart+0x91/0x7e0 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
exit_to_user_mode_loop+0xd2/0x530 kernel/entry/common.c:101
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline]
do_syscall_64+0x682/0x7f0 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f56003f9257
RSP: 002b:00007ffca8800f60 EFLAGS: 00000202
ORIG_RAX: 0000000000000000
RAX: fffffffffffffe00 RBX: 00005555623ab500 RCX: 00007f56003f9257
RDX: 0000000000000030 RSI: 00007ffca8801040 RDI: 00000000000000f9
RBP: 00007ffca8800fec R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000219
R13: 000000000000004f R14: 000000000014a88b R15: 00007ffca8801040
INFO: task syz-executor:2976 blocked for more than 143 seconds.
Not tainted syzkaller #0
Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D
stack:24424 pid:2976 tgid:2976 ppid:1 task_flags:0x40054c flags:0x00080003
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
exp_funnel_lock+0x344/0x3c0 kernel/rcu/tree_exp.h:334
synchronize_rcu_expedited+0x298/0x450 kernel/rcu/tree_exp.h:961
namespace_unlock+0x54d/0x920 fs/namespace.c:1724
class_namespace_excl_destructor fs/namespace.c:90 [inline]
put_mnt_ns+0x290/0x300 fs/namespace.c:6283
nsproxy_free kernel/nsproxy.c:66 [inline]
deactivate_nsproxy kernel/nsproxy.c:80 [inline]
put_nsproxy include/linux/nsproxy.h:110 [inline]
put_nsproxy include/linux/nsproxy.h:107 [inline]
switch_task_namespaces+0x133/0x2c0 kernel/nsproxy.c:260
do_exit+0x8cd/0x2a50 kernel/exit.c:1008
do_group_exit+0xd5/0x2a0 kernel/exit.c:1152
get_signal+0x1ec7/0x21e0 kernel/signal.c:3046
arch_do_signal_or_restart+0x91/0x7e0 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
exit_to_user_mode_loop+0xd2/0x530 kernel/entry/common.c:101
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline]
do_syscall_64+0x682/0x7f0 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7d28829257
RSP: 002b:00007ffc6fb47410 EFLAGS: 00000202
ORIG_RAX: 0000000000000000
RAX: fffffffffffffe00 RBX: 000055556a7e3500 RCX: 00007f7d28829257
RDX: 0000000000000030 RSI: 00007ffc6fb474f0 RDI: 00000000000000f9
RBP: 00007ffc6fb4749c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 000000000000020f
R13: 0000000000000048 R14: 000000000014aa77 R15: 00007ffc6fb474f0
INFO: task syz-executor:2978 blocked for more than 143 seconds.
Not tainted syzkaller #0
Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D
stack:23352 pid:2978 tgid:2978 ppid:1 task_flags:0x40054c flags:0x00080003
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
__mutex_lock_common kernel/locking/mutex.c:726 [inline]
__mutex_lock+0xccc/0x1bd0 kernel/locking/mutex.c:821
exp_funnel_lock+0x19e/0x3c0 kernel/rcu/tree_exp.h:343
synchronize_rcu_expedited+0x298/0x450 kernel/rcu/tree_exp.h:961
namespace_unlock+0x54d/0x920 fs/namespace.c:1724
class_namespace_excl_destructor fs/namespace.c:90 [inline]
put_mnt_ns+0x290/0x300 fs/namespace.c:6283
nsproxy_free kernel/nsproxy.c:66 [inline]
deactivate_nsproxy kernel/nsproxy.c:80 [inline]
put_nsproxy include/linux/nsproxy.h:110 [inline]
put_nsproxy include/linux/nsproxy.h:107 [inline]
switch_task_namespaces+0x133/0x2c0 kernel/nsproxy.c:260
do_exit+0x8cd/0x2a50 kernel/exit.c:1008
do_group_exit+0xd5/0x2a0 kernel/exit.c:1152
get_signal+0x1ec7/0x21e0 kernel/signal.c:3046
arch_do_signal_or_restart+0x91/0x7e0 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
exit_to_user_mode_loop+0xd2/0x530 kernel/entry/common.c:101
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline]
do_syscall_64+0x682/0x7f0 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0a09899257
RSP: 002b:00007ffe4ab62a60 EFLAGS: 00000202 ORIG_RAX: 000000000000003d
RAX: fffffffffffffe00 RBX: 0000555579513500 RCX: 00007f0a09899257
RDX: 0000000040000000 RSI: 00007ffe4ab62aec RDI: ffffffffffffffff
RBP: 00007ffe4ab62aec R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000212
R13: 0000000000000000 R14: 000000000014a990 R15: 00007ffe4ab62b40
INFO: task kworker/0:5:5258 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:5 state:D
stack:18168 pid:5258 tgid:5258 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: events free_ipc
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
synchronize_rcu_expedited+0x39a/0x450 kernel/rcu/tree_exp.h:976
free_ipc+0xb9/0x210 ipc/namespace.c:180
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.1.2628:15049 blocked for more than 143 seconds.
Not tainted syzkaller #0
Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.2628 state:D
stack:26280 pid:15049 tgid:15049 ppid:2973 task_flags:0x40004c flags:0x00080001
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
sysfs_remove_file include/linux/sysfs.h:780 [inline]
driver_remove_file drivers/base/driver.c:126 [inline]
driver_remove_file+0x4a/0x60 drivers/base/driver.c:122
remove_bind_files drivers/base/bus.c:690 [inline]
bus_remove_driver+0x248/0x2e0 drivers/base/bus.c:828
driver_unregister+0x76/0xb0 drivers/base/driver.c:202
usb_gadget_unregister_driver+0x49/0x70 drivers/usb/gadget/udc/core.c:1784
raw_release+0x19b/0x260 drivers/usb/gadget/legacy/raw_gadget.c:463
__fput+0x3ff/0xb50 fs/file_table.c:512
task_work_run+0x150/0x240 kernel/task_work.c:233
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0x8d2/0x2a50 kernel/exit.c:1009
do_group_exit+0xd5/0x2a0 kernel/exit.c:1152
__do_sys_exit_group kernel/exit.c:1163 [inline]
__se_sys_exit_group kernel/exit.c:1161 [inline]
__x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1161
x64_sys_call+0x102c/0x1530 arch/x86/include/generated/asm/syscalls_64.h:232
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: 0033:0x7f6f8128e0d9
RSP: 002b:00007ffd3ee59378 EFLAGS: 00000246
ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000000000000000b RCX: 00007f6f8128e0d9
RDX: 0000000000000001 RSI: 0000000000000000 RDI: 000000000000000b
RBP: 0000000000001e6d R08: 00007ffd3ee597f7 R09: 000000000000000b
R10: 00007f6f81515fa0 R11: 0000000000000246 R12: 0000000000000003
R13: 00007f6f8151627c R14: 00007f6f81516278 R15: 00007f6f81516270
INFO: task modprobe:15140 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:modprobe state:D
stack:25240 pid:15140 tgid:15140 ppid:7898 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: 0033:0x7f27f15d5487
RSP: 002b:00007fff2b158d48 EFLAGS: 00000246
ORIG_RAX: 0000000000000089
RAX: ffffffffffffffda RBX: 00007f27f14ac2fe RCX: 00007f27f15d5487
RDX: 00007f27f14b51d4 RSI: 00007fff2b158dd0 RDI: 00007f27f14ac2fe
RBP: 00007fff2b158dd0 R08: 00007f27f17bfaf8 R09: 0000000000000000
R10: 00007fff2b158b80 R11: 0000000000000246 R12: 00007fff2b158f58
R13: 00007fff2b158f80 R14: 00007f27f14b34d0 R15: 0000000000000000
INFO: task modprobe:15142 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:modprobe state:D
stack:25144 pid:15142 tgid:15142 ppid:62 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