INFO: task syz.0.4892:14876 blocked for more than 123 seconds. Not tainted 6.12.30-syzkaller-g15d2fe054444 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.4892 state:D stack:0 pid:14876 tgid:14876 ppid:14592 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5947 [inline] __schedule+0x132b/0x1e00 kernel/sched/core.c:7775 __schedule_loop kernel/sched/core.c:7856 [inline] schedule+0xc6/0x240 kernel/sched/core.c:7871 schedule_preempt_disabled+0x14/0x30 kernel/sched/core.c:7928 __mutex_lock_common kernel/locking/mutex.c:692 [inline] __mutex_lock+0x81e/0x1b50 kernel/locking/mutex.c:788 __mutex_lock_slowpath+0xe/0x20 kernel/locking/mutex.c:1119 mutex_lock+0x102/0x1c0 kernel/locking/mutex.c:270 rcu_barrier+0x4d/0x530 kernel/rcu/tree.c:4574 kvm_mmu_uninit_tdp_mmu+0x1df/0x210 arch/x86/kvm/mmu/tdp_mmu.c:51 kvm_mmu_uninit_vm+0x27/0x60 arch/x86/kvm/mmu/mmu.c:6572 kvm_arch_destroy_vm+0x383/0x410 arch/x86/kvm/x86.c:12898 kvm_destroy_vm virt/kvm/kvm_main.c:1355 [inline] kvm_put_kvm+0xb04/0x12b0 virt/kvm/kvm_main.c:1391 kvm_vm_release+0x47/0x70 virt/kvm/kvm_main.c:1414 __fput+0x1fe/0xa00 fs/file_table.c:431 ____fput+0x20/0x30 fs/file_table.c:459 task_work_run+0x1e3/0x250 kernel/task_work.c:240 exit_task_work include/linux/task_work.h:43 [inline] do_exit+0x9b4/0x2630 kernel/exit.c:944 do_group_exit+0x22a/0x300 kernel/exit.c:1094 get_signal+0x139d/0x14f0 kernel/signal.c:2934 arch_do_signal_or_restart+0x96/0x720 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x58/0xb0 kernel/entry/common.c:218 do_syscall_64+0x64/0xf0 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7f6158dc11e5 RSP: 002b:00007f6159b3af80 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6 RAX: fffffffffffffdfc RBX: 00007f6158fb5fa0 RCX: 00007f6158dc11e5 RDX: 00007f6159b3afc0 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f6158e10b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f6158fb5fa0 R15: 00007ffead162678 INFO: task syz.0.6128:18356 blocked for more than 130 seconds. Not tainted 6.12.30-syzkaller-g15d2fe054444 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.6128 state:D stack:0 pid:18356 tgid:18356 ppid:14592 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5947 [inline] __schedule+0x132b/0x1e00 kernel/sched/core.c:7775 __schedule_loop kernel/sched/core.c:7856 [inline] schedule+0xc6/0x240 kernel/sched/core.c:7871 schedule_preempt_disabled+0x14/0x30 kernel/sched/core.c:7928 __mutex_lock_common kernel/locking/mutex.c:692 [inline] __mutex_lock+0x81e/0x1b50 kernel/locking/mutex.c:788 __mutex_lock_slowpath+0xe/0x20 kernel/locking/mutex.c:1119 mutex_lock+0x102/0x1c0 kernel/locking/mutex.c:270 rtnl_lock+0x19/0x20 net/core/rtnetlink.c:79 tun_detach drivers/net/tun.c:698 [inline] tun_chr_close+0x41/0x150 drivers/net/tun.c:3517 __fput+0x1fe/0xa00 fs/file_table.c:431 ____fput+0x20/0x30 fs/file_table.c:459 task_work_run+0x1e3/0x250 kernel/task_work.c:240 exit_task_work include/linux/task_work.h:43 [inline] do_exit+0x9b4/0x2630 kernel/exit.c:944 do_group_exit+0x22a/0x300 kernel/exit.c:1094 get_signal+0x139d/0x14f0 kernel/signal.c:2934 arch_do_signal_or_restart+0x96/0x720 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x58/0xb0 kernel/entry/common.c:218 do_syscall_64+0x64/0xf0 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7f6158dc11e5 RSP: 002b:00007f6159b3af80 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6 RAX: fffffffffffffdfc RBX: 00007f6158fb5fa0 RCX: 00007f6158dc11e5 RDX: 00007f6159b3afc0 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f6158e10b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f6158fb5fa0 R15: 00007ffead162678 INFO: task syz.0.6145:18402 blocked for more than 131 seconds. Not tainted 6.12.30-syzkaller-g15d2fe054444 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.6145 state:D stack:0 pid:18402 tgid:18401 ppid:14592 flags:0x00004002