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INFO: task hung in tun_chr_close (3)

Status: auto-closed as invalid on 2021/08/23 13:06
Subsystems: net
[Documentation on labels]
First crash: 1067d, last: 1067d
▶ ▼ Similar bugs (11)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 INFO: task hung in tun_chr_close 1 39d 39d 0/3 upstream: reported on 2024/03/18 08:54
linux-4.19 INFO: task hung in tun_chr_close 1 1353d 1353d 0/1 auto-closed as invalid on 2020/12/09 18:55
upstream INFO: task hung in tun_chr_close (4) net syz unreliable error 14 895d 955d 0/26 auto-closed as invalid on 2022/09/18 21:51
upstream INFO: task hung in tun_chr_close net 5 1679d 2261d 0/26 closed as dup on 2018/02/16 08:24
linux-4.19 INFO: task hung in tun_chr_close (3) 1 630d 630d 0/1 auto-obsoleted due to no activity on 2022/12/03 04:48
upstream INFO: task hung in rtnetlink_rcv_msg net C inconclusive inconclusive 913 45d 1890d 0/26 upstream: reported C repro on 2019/02/22 17:00
android-49 INFO: task hung in tun_chr_close 1 2175d 2175d 0/3 auto-closed as invalid on 2019/02/22 14:33
linux-4.19 INFO: task hung in tun_chr_close (4) 3 436d 464d 0/1 upstream: reported on 2023/01/18 07:05
linux-4.19 INFO: task hung in tun_chr_close (2) 6 843d 937d 0/1 auto-closed as invalid on 2022/05/04 09:03
android-44 INFO: task hung in tun_chr_close 1 2185d 2185d 0/2 auto-closed as invalid on 2019/02/22 15:23
upstream INFO: task hung in tun_chr_close (2) net 7 1175d 1397d 0/26 auto-closed as invalid on 2021/05/17 11:47

Sample crash report:
INFO: task syz-executor.3:14716 blocked for more than 143 seconds.
      Not tainted 5.13.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3  state:D stack:24016 pid:14716 ppid:     1 flags:0x00004006
Call Trace:
 context_switch kernel/sched/core.c:4339 [inline]
 __schedule+0x916/0x23e0 kernel/sched/core.c:5147
 schedule+0xcf/0x270 kernel/sched/core.c:5226
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:5285
 __mutex_lock_common kernel/locking/mutex.c:1036 [inline]
 __mutex_lock+0x7d4/0x10c0 kernel/locking/mutex.c:1104
 tun_detach drivers/net/tun.c:684 [inline]
 tun_chr_close+0x3a/0x180 drivers/net/tun.c:3397
 __fput+0x288/0x920 fs/file_table.c:280
 task_work_run+0xdd/0x1a0 kernel/task_work.c:164
 exit_task_work include/linux/task_work.h:32 [inline]
 do_exit+0xbfc/0x2a60 kernel/exit.c:826
 do_group_exit+0x125/0x310 kernel/exit.c:923
 get_signal+0x47f/0x2150 kernel/signal.c:2835
 arch_do_signal_or_restart+0x2a8/0x1eb0 arch/x86/kernel/signal.c:789
 handle_signal_work kernel/entry/common.c:147 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
 exit_to_user_mode_prepare+0x171/0x280 kernel/entry/common.c:208
 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline]
 syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:301
 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:57
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x41956c
RSP: 002b:00007ffc25e8a720 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: 0000000000000028 RBX: 00000000014a4320 RCX: 000000000041956c
RDX: 0000000000000028 RSI: 00000000014a4370 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007ffc25e8a774 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 00000000014a4370 R14: 0000000000000003 R15: 0000000000000000

Showing all locks held in the system:
3 locks held by kworker/0:2/8:
 #0: ffff88802ae4a138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff88802ae4a138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline]
 #0: ffff88802ae4a138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline]
 #0: ffff88802ae4a138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:617 [inline]
 #0: ffff88802ae4a138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline]
 #0: ffff88802ae4a138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x871/0x1600 kernel/workqueue.c:2247
 #1: ffffc90000cefda8 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1600 kernel/workqueue.c:2251
 #2: ffffffff8d6a3968 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xa3/0x1340 net/ipv6/addrconf.c:4031
2 locks held by kworker/1:1/36:
 #0: ffff888011073538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff888011073538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline]
 #0: ffff888011073538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline]
 #0: ffff888011073538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:617 [inline]
 #0: ffff888011073538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline]
 #0: ffff888011073538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x871/0x1600 kernel/workqueue.c:2247
 #1: ffffc90000e77da8 ((work_completion)(&rew.rew_work)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1600 kernel/workqueue.c:2251
2 locks held by kworker/u4:3/121:
4 locks held by kworker/u4:5/1276:
 #0: ffff888143f95138 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff888143f95138 ((wq_completion)netns){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline]
 #0: ffff888143f95138 ((wq_completion)netns){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline]
 #0: ffff888143f95138 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:617 [inline]
 #0: ffff888143f95138 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline]
 #0: ffff888143f95138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x871/0x1600 kernel/workqueue.c:2247
 #1: ffffc90004f77da8 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1600 kernel/workqueue.c:2251
 #2: ffffffff8d690810 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x9b/0xb10 net/core/net_namespace.c:557
 #3: ffffffff8d6a3968 (rtnl_mutex){+.+.}-{3:3}, at: netdev_run_todo+0x6fa/0xa80 net/core/dev.c:10561
1 lock held by khungtaskd/1619:
 #0: ffffffff8bf76860 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6333
1 lock held by in:imklog/8119:
 #0: ffff888016c440f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:974
2 locks held by syz-executor.1/14577:
 #0: ffffffff8d6a3968 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:684 [inline]
 #0: ffffffff8d6a3968 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3a/0x180 drivers/net/tun.c:3397
 #1: ffffffff8bf7fa68 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline]
 #1: ffffffff8bf7fa68 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x27e/0x620 kernel/rcu/tree_exp.h:837
1 lock held by syz-executor.2/14581:
 #0: ffffffff8d6a3968 (rtnl_mutex){+.+.}-{3:3}, at: netdev_run_todo+0x6fa/0xa80 net/core/dev.c:10561
1 lock held by syz-executor.3/14716:
 #0: ffffffff8d6a3968 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:684 [inline]
 #0: ffffffff8d6a3968 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3a/0x180 drivers/net/tun.c:3397
3 locks held by kworker/0:17/15994:
 #0: ffff888011063d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff888011063d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline]
 #0: ffff888011063d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline]
 #0: ffff888011063d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:617 [inline]
 #0: ffff888011063d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline]
 #0: ffff888011063d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x871/0x1600 kernel/workqueue.c:2247
 #1: ffffc9000a3a7da8 (xfrm_state_gc_work){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1600 kernel/workqueue.c:2251
 #2: ffffffff8bf7fa68 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline]
 #2: ffffffff8bf7fa68 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x27e/0x620 kernel/rcu/tree_exp.h:837
3 locks held by kworker/0:19/15996:
 #0: ffff888011063d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff888011063d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline]
 #0: ffff888011063d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline]
 #0: ffff888011063d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:617 [inline]
 #0: ffff888011063d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline]
 #0: ffff888011063d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x871/0x1600 kernel/workqueue.c:2247
 #1: ffffc9000a3c7da8 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1600 kernel/workqueue.c:2251
 #2: ffffffff8d6a3968 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xb/0x60 net/core/link_watch.c:250
4 locks held by syz-executor.5/16149:

=============================================

NMI backtrace for cpu 1
CPU: 1 PID: 1619 Comm: khungtaskd Not tainted 5.13.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x141/0x1d7 lib/dump_stack.c:120
 nmi_cpu_backtrace.cold+0x44/0xd7 lib/nmi_backtrace.c:105
 nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:209 [inline]
 watchdog+0xd48/0xfb0 kernel/hung_task.c:294
 kthread+0x3b1/0x4a0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 16149 Comm: syz-executor.5 Not tainted 5.13.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:do_read_seqcount_retry include/linux/seqlock.h:452 [inline]
RIP: 0010:ktime_get+0x2e7/0x470 kernel/time/timekeeping.c:831
Code: 0a bf 3f 00 00 00 44 8b 25 2a d7 94 0a 48 0f af d8 44 89 e6 48 03 1d 20 d7 94 0a e8 f3 93 0f 00 41 83 fc 3f 0f 87 51 87 71 07 <e8> 94 8d 0f 00 44 8b 35 ad d6 94 0a 89 ee 44 89 f7 e8 b3 94 0f 00
RSP: 0018:ffffc90000007890 EFLAGS: 00000093
RAX: 0000000000000000 RBX: 0033ba06dea10254 RCX: 0000000000000018
RDX: 0000000000000000 RSI: ffff88806ce20380 RDI: 0000000000000003
RBP: 000000000001cc36 R08: 000000000000003f R09: 0000000000000000
R10: ffffffff81647ffd R11: 0000000000000000 R12: 0000000000000018
R13: dffffc0000000000 R14: 000000000001cc36 R15: 00000212733415c7
FS:  00007fea898fe700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f08c15c3008 CR3: 000000006cde4000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 clockevents_program_event+0x141/0x370 kernel/time/clockevents.c:326
 tick_program_event+0xac/0x140 kernel/time/tick-oneshot.c:44
 hrtimer_interrupt+0x414/0xa00 kernel/time/hrtimer.c:1676
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1089 [inline]
 __sysvec_apic_timer_interrupt+0x146/0x540 arch/x86/kernel/apic/apic.c:1106
 sysvec_apic_timer_interrupt+0x40/0xc0 arch/x86/kernel/apic/apic.c:1100
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647
RIP: 0010:ieee80211_prepare_and_rx_handle+0x8eb/0x5070 net/mac80211/rx.c:4501
Code: 01 f9 89 ee bf 80 00 00 00 e8 d1 86 01 f9 66 83 c5 80 41 0f 94 c5 e9 ef 18 00 00 e8 2f 7e 01 f9 0f 0b 45 31 ed e8 25 7e 01 f9 <48> ba 00 00 00 00 00 fc ff df 48 03 54 24 20 48 c7 02 00 00 00 00
RSP: 0018:ffffc90000007ad8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc90000007bc0 RCX: 0000000000000100
RDX: ffff88806ce20380 RSI: ffffffff88728f7b RDI: 0000000000000000
RBP: ffff888039077280 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff817a1e58 R11: 0000000000000003 R12: ffff88801ef16c50
R13: 0000000000000001 R14: ffffc90000007d38 R15: ffffc90000007d58
 __ieee80211_rx_handle_packet net/mac80211/rx.c:4636 [inline]
 ieee80211_rx_list+0x930/0x2680 net/mac80211/rx.c:4820
 ieee80211_rx_napi+0xf7/0x3d0 net/mac80211/rx.c:4843
 ieee80211_rx include/net/mac80211.h:4528 [inline]
 ieee80211_tasklet_handler+0xd4/0x130 net/mac80211/main.c:235
 tasklet_action_common.constprop.0+0x201/0x2e0 kernel/softirq.c:784
 __do_softirq+0x29b/0x9f6 kernel/softirq.c:559
 invoke_softirq kernel/softirq.c:433 [inline]
 __irq_exit_rcu+0x136/0x200 kernel/softirq.c:637
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1100
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647
RIP: 0010:schedule_debug kernel/sched/core.c:4892 [inline]
RIP: 0010:__schedule+0x129/0x23e0 kernel/sched/core.c:5038
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 55 1c 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 7d 20 4c 89 fa 48 c1 ea 03 80 3c 02 00 <0f> 85 28 1d 00 00 49 81 3f 9d 6e ac 57 0f 85 7f 22 00 00 49 8d 45
RSP: 0018:ffffc9000b08e960 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 1ffff92001611d34
RDX: 1ffff92001611000 RSI: 0000000000000001 RDI: ffff88806ce203a0
RBP: ffffc9000b08ea28 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff817a1e58 R11: 0000000000000001 R12: ffff8880b9c35340
R13: ffff88806ce20380 R14: 0000000000035340 R15: ffffc9000b088000
 preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:5535
 irqentry_exit+0x31/0x80 kernel/entry/common.c:426
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647
RIP: 0010:unwind_next_frame+0xa/0x1ce0 arch/x86/kernel/unwind_orc.c:418
Code: e8 ab 78 85 00 48 8b 04 24 eb bd 48 89 0c 24 e8 1c 78 85 00 48 8b 0c 24 e9 72 ff ff ff 0f 1f 00 48 b8 00 00 00 00 00 fc ff df <41> 57 41 56 49 89 fe 41 55 41 54 55 53 48 81 ec a0 00 00 00 48 c7
RSP: 0018:ffffc9000b08eb08 EFLAGS: 00000202
RAX: dffffc0000000000 RBX: ffffffff81629ca0 RCX: 0000000000000000
RDX: 1ffff92001611d8c RSI: ffffffff87b8d7cc RDI: ffffc9000b08eb10
RBP: ffffc9000b08eb98 R08: ffffffff8ec0f34c R09: 0000000000000001
R10: fffff52001611d6d R11: 0000000000084087 R12: ffffc9000b08ebc8
R13: 0000000000000000 R14: ffff88806ce20380 R15: 0000000000000a20
 arch_stack_walk+0x7d/0xe0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121
 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:428 [inline]
 ____kasan_kmalloc mm/kasan/common.c:507 [inline]
 ____kasan_kmalloc mm/kasan/common.c:466 [inline]
 __kasan_kmalloc+0x98/0xc0 mm/kasan/common.c:516
 kmalloc_reserve net/core/skbuff.c:354 [inline]
 __alloc_skb+0xde/0x340 net/core/skbuff.c:425
 alloc_skb include/linux/skbuff.h:1107 [inline]
 nlmsg_new include/net/netlink.h:953 [inline]
 xfrm_send_acquire+0x16e/0xb80 net/xfrm/xfrm_user.c:3105
 km_query+0xc5/0x210 net/xfrm/xfrm_state.c:2204
 xfrm_state_find+0x2bdc/0x4d10 net/xfrm/xfrm_state.c:1140
 xfrm_tmpl_resolve_one net/xfrm/xfrm_policy.c:2394 [inline]
 xfrm_tmpl_resolve+0x2f3/0xd40 net/xfrm/xfrm_policy.c:2439
 xfrm_resolve_and_create_bundle+0x123/0x2590 net/xfrm/xfrm_policy.c:2729
 xfrm_lookup_with_ifid+0x227/0x20e0 net/xfrm/xfrm_policy.c:3063
 xfrm_lookup net/xfrm/xfrm_policy.c:3187 [inline]
 xfrm_lookup_route+0x36/0x1e0 net/xfrm/xfrm_policy.c:3198
 ip_route_output_flow+0x114/0x150 net/ipv4/route.c:2733
 udp_sendmsg+0x1a2f/0x2730 net/ipv4/udp.c:1206
 inet_sendmsg+0x99/0xe0 net/ipv4/af_inet.c:821
 sock_sendmsg_nosec net/socket.c:654 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:674
 ____sys_sendmsg+0x331/0x810 net/socket.c:2350
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2404
 __sys_sendmmsg+0x195/0x470 net/socket.c:2490
 __do_sys_sendmmsg net/socket.c:2519 [inline]
 __se_sys_sendmmsg net/socket.c:2516 [inline]
 __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2516
 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665d9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 
Lost 7 message(s)!

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/05/25 13:01 upstream a050a6d2b7e8 3c7fef33 .config console log report info ci-upstream-kasan-gce-selinux-root INFO: task hung in tun_chr_close
* Struck through repros no longer work on HEAD.