INFO: task syz.6.18082:12384 blocked for more than 143 seconds.
Tainted: G L syzkaller #0
Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.6.18082 state:D stack:21704 pid:12384 tgid:12384 ppid:9250 task_flags:0x40044c flags:0x00080003
Call Trace:
context_switch kernel/sched/core.c:5526 [inline]
__schedule+0x16d9/0x5700 kernel/sched/core.c:7276
__schedule_loop kernel/sched/core.c:7353 [inline]
rt_mutex_schedule+0x76/0xf0 kernel/sched/core.c:7660
rt_mutex_slowlock_block+0x55e/0x690 kernel/locking/rtmutex.c:1670
__rt_mutex_slowlock kernel/locking/rtmutex.c:1747 [inline]
__rt_mutex_slowlock_locked kernel/locking/rtmutex.c:1787 [inline]
rt_mutex_slowlock+0x2d4/0x780 kernel/locking/rtmutex.c:1827
__rt_mutex_lock kernel/locking/rtmutex.c:1842 [inline]
__mutex_lock_common kernel/locking/rtmutex_api.c:562 [inline]
mutex_lock_nested+0x168/0x1d0 kernel/locking/rtmutex_api.c:580
rcu_barrier+0x4c/0x530 kernel/rcu/tree.c:3904
netdev_run_todo+0x2fc/0x1060 net/core/dev.c:11780
tun_detach drivers/net/tun.c:656 [inline]
tun_chr_close+0x13f/0x1c0 drivers/net/tun.c:3587
__fput+0x42a/0xa80 fs/file_table.c:512
task_work_run+0x1d9/0x270 kernel/task_work.c:233
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0x73a/0x2360 kernel/exit.c:1011
do_group_exit+0x22d/0x2f0 kernel/exit.c:1154
get_signal+0x121b/0x12c0 kernel/signal.c:3051
arch_do_signal_or_restart+0xbb/0x860 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
exit_to_user_mode_loop+0x10e/0x770 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:336 [inline]
do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdd4dc5e159
RSP: 002b:00007ffe2b84f7f8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fdd4dee7da0 RCX: 00007fdd4dc5e159
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007fdd4dee7da0 R08: 00007fdd4dee6038 R09: 0000000000000000
R10: 00000000005f74c4 R11: 0000000000000246 R12: 000000000013766a
R13: 00007fdd4dee5fac R14: 000000000013737a R15: 00007ffe2b84f900
INFO: task syz.4.18089:12398 blocked for more than 143 seconds.
Tainted: G L syzkaller #0
Blocked by coredump.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.18089 state:D stack:25608 pid:12398 tgid:12398 ppid:5635 task_flags:0x40044c flags:0x00080003
Call Trace:
context_switch kernel/sched/core.c:5526 [inline]
__schedule+0x16d9/0x5700 kernel/sched/core.c:7276
__schedule_loop kernel/sched/core.c:7353 [inline]
rt_mutex_schedule+0x76/0xf0 kernel/sched/core.c:7660
rt_mutex_slowlock_block+0x55e/0x690 kernel/locking/rtmutex.c:1670
__rt_mutex_slowlock kernel/locking/rtmutex.c:1747 [inline]
__rt_mutex_slowlock_locked kernel/locking/rtmutex.c:1787 [inline]
rt_mutex_slowlock+0x2d4/0x780 kernel/locking/rtmutex.c:1827
__rt_mutex_lock kernel/locking/rtmutex.c:1842 [inline]
__mutex_lock_common kernel/locking/rtmutex_api.c:562 [inline]
mutex_lock_nested+0x168/0x1d0 kernel/locking/rtmutex_api.c:580
rcu_barrier+0x4c/0x530 kernel/rcu/tree.c:3904
netdev_run_todo+0x2fc/0x1060 net/core/dev.c:11780
tun_detach drivers/net/tun.c:656 [inline]
tun_chr_close+0x13f/0x1c0 drivers/net/tun.c:3587
__fput+0x42a/0xa80 fs/file_table.c:512
task_work_run+0x1d9/0x270 kernel/task_work.c:233
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0x73a/0x2360 kernel/exit.c:1011
do_group_exit+0x22d/0x2f0 kernel/exit.c:1154
get_signal+0x121b/0x12c0 kernel/signal.c:3051
arch_do_signal_or_restart+0xbb/0x860 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
exit_to_user_mode_loop+0x10e/0x770 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:336 [inline]
do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9afc8be159
RSP: 002b:00007ffebdfc8508 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007ffebdfc85f0 RCX: 00007f9afc8be159
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 0000000000137793 R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b33e20000 R11: 0000000000000246 R12: 00007ffebdfc8630
R13: 00007f9afcb45fac R14: 000000000013780e R15: 00007f9afcb45fa0
INFO: task syz.5.18133:12539 blocked for more than 143 seconds.
Tainted: G L syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.5.18133 state:D stack:25608 pid:12539 tgid:12539 ppid:6495 task_flags:0x400040 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5526 [inline]
__schedule+0x16d9/0x5700 kernel/sched/core.c:7276
__schedule_loop kernel/sched/core.c:7353 [inline]
rt_mutex_schedule+0x76/0xf0 kernel/sched/core.c:7660
rt_mutex_slowlock_block+0x55e/0x690 kernel/locking/rtmutex.c:1670
__rt_mutex_slowlock kernel/locking/rtmutex.c:1747 [inline]
__rt_mutex_slowlock_locked kernel/locking/rtmutex.c:1787 [inline]
rt_mutex_slowlock+0x2d4/0x780 kernel/locking/rtmutex.c:1827
__rt_mutex_lock kernel/locking/rtmutex.c:1842 [inline]
__mutex_lock_common kernel/locking/rtmutex_api.c:562 [inline]
mutex_lock_nested+0x168/0x1d0 kernel/locking/rtmutex_api.c:580
rcu_barrier+0x4c/0x530 kernel/rcu/tree.c:3904
kvm_mmu_uninit_vm+0x53/0x90 arch/x86/kvm/mmu/mmu.c:7074
kvm_arch_destroy_vm+0x18b/0x1d0 arch/x86/kvm/x86.c:10040
kvm_destroy_vm virt/kvm/kvm_main.c:1295 [inline]
kvm_put_kvm+0x772/0xb50 virt/kvm/kvm_main.c:1332
kvm_vm_release+0x46/0x50 virt/kvm/kvm_main.c:1355
__fput+0x42a/0xa80 fs/file_table.c:512
task_work_run+0x1d9/0x270 kernel/task_work.c:233
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
__exit_to_user_mode_loop kernel/entry/common.c:70 [inline]
exit_to_user_mode_loop+0x204/0x770 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:336 [inline]
do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcb3048e159