INFO: task hung in vcs

Kernel	Title	Count	Last	Reported	Patched	Status
upstream	INFO: task hung in vcs_open (5) serial	2	415d	419d	0/26	auto-obsoleted due to no activity on 2023/06/04 04:45
upstream	INFO: task hung in vcs_open (3) serial	1	1158d	1158d	0/26	auto-closed as invalid on 2021/05/22 19:06
upstream	INFO: task hung in vcs_open serial	32	1328d	1461d	0/26	closed as dup on 2020/08/05 10:53
upstream	INFO: task hung in vcs_open (2) serial	1	1308d	1308d	0/26	auto-closed as invalid on 2020/12/23 12:34
linux-4.19	INFO: task hung in vcs_open	11	1264d	1577d	0/1	auto-closed as invalid on 2021/03/07 01:31
upstream	INFO: task hung in vcs_open (4) serial	2	569d	631d	0/26	auto-obsoleted due to no activity on 2023/01/02 16:56
linux-4.14	INFO: task hung in vcs_open	3	1422d	1505d	0/1	auto-closed as invalid on 2020/09/30 10:12
upstream	INFO: task hung in vcs_open (6) serial	2	188d	252d	0/26	auto-obsoleted due to no activity on 2024/01/17 08:03

Bluetooth: hci8: command 0x0409 tx timeout Bluetooth: hci7: command 0x0419 tx timeout Bluetooth: hci8: command 0x041b tx timeout Bluetooth: hci8: command 0x040f tx timeout Bluetooth: hci8: command 0x0419 tx timeout INFO: task syz-executor.3:22398 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D27200 22398 8118 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_timeout+0x92d/0xfe0 kernel/time/timer.c:1794 __down_common kernel/locking/semaphore.c:221 [inline] __down+0x183/0x2a0 kernel/locking/semaphore.c:238 down+0x57/0x80 kernel/locking/semaphore.c:62 console_lock+0x25/0x80 kernel/printk/printk.c:2275 vcs_open+0x62/0xc0 drivers/tty/vt/vc_screen.c:660 chrdev_open+0x266/0x770 fs/char_dev.c:423 do_dentry_open+0x4aa/0x1160 fs/open.c:796 do_last fs/namei.c:3421 [inline] path_openat+0x793/0x2df0 fs/namei.c:3537 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_sys_open+0x3b3/0x520 fs/open.c:1085 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fc4196305f9 Code: Bad RIP value. RSP: 002b:00007fc417fa3168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fc419750f80 RCX: 00007fc4196305f9 RDX: 0000000000000000 RSI: 00000000200004c0 RDI: ffffffffffffff9c RBP: 00007fc41968b7b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffc1dd2c2f R14: 00007fc417fa3300 R15: 0000000000022000 Showing all locks held in the system: 2 locks held by systemd/1: 1 lock held by khungtaskd/1570: #0: 000000003df43e47 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 1 lock held by systemd-journal/4688: 1 lock held by systemd-udevd/4708: 1 lock held by in:imklog/7811: #0: 00000000d4757c51 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 3 locks held by syz-fuzzer/8082: 5 locks held by kworker/u4:10/12179: 2 locks held by kworker/u4:11/12220: 2 locks held by syz-executor.5/22374: 5 locks held by syz-executor.5/22383: 3 locks held by syz-executor.5/22897: 1 lock held by syz-executor.3/22913: #0: 000000009bcadc30 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 000000009bcadc30 (rtnl_mutex){+.+.}, at: rtnl_newlink+0x7f9/0x15c0 net/core/rtnetlink.c:3097 1 lock held by syz-executor.5/23051: #0: 000000009bcadc30 (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 000000009bcadc30 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4779 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x991/0xe60 kernel/hung_task.c:287 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 22897 Comm: syz-executor.5 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 RIP: 0010:debug_lockdep_rcu_enabled+0x15/0xe0 kernel/rcu/update.c:253 Code: 47 00 e9 62 fe ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 c7 c0 44 e0 26 8b 53 48 ba 00 00 00 00 00 fc ff df 48 89 c1 <83> e0 07 48 c1 e9 03 83 c0 03 0f b6 14 11 38 d0 7c 08 84 d2 0f 85 RSP: 0018:ffff888096517bd8 EFLAGS: 00000092 RAX: ffffffff8b26e044 RBX: ffff8880a81ee580 RCX: ffffffff8b26e044 RDX: dffffc0000000000 RSI: 000000006ec8abcd RDI: 0000000000000086 RBP: ffff888096517f58 R08: 00000000c55e8e46 R09: 0000000000000003 R10: ffff8880a81eee80 R11: ffffffff8c66501b R12: 0000000000000f20 R13: ffff8880a81ee658 R14: 0000000000000000 R15: ffff8880a81ee580 FS: 00005555561df400(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9eae701320 CR3: 000000006f2bc000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_read_lock include/linux/rcupdate.h:628 [inline] cpuacct_charge+0xa5/0x350 kernel/sched/cpuacct.c:347 cgroup_account_cputime include/linux/cgroup.h:767 [inline] update_curr+0x2ce/0x870 kernel/sched/fair.c:858 yield_task_fair+0x160/0x240 kernel/sched/fair.c:6895 do_sched_yield+0xef/0x1a0 kernel/sched/core.c:4985 yield+0xa2/0xd0 kernel/sched/core.c:5066 tasklet_kill+0x3f/0xc0 kernel/softirq.c:566 bcm_remove_op+0x84/0x2c0 net/can/bcm.c:756 bcm_release+0x260/0x950 net/can/bcm.c:1561 __sock_release+0xcd/0x2a0 net/socket.c:599 sock_close+0x15/0x20 net/socket.c:1214 __fput+0x2ce/0x890 fs/file_table.c:278 task_work_run+0x148/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f7acb0763cb Code: 0f 05 48 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 63 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 a1 fc ff ff 8b 44 RSP: 002b:00007fffd2f871c0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000006 RCX: 00007f7acb0763cb RDX: 0000001b2e520000 RSI: 00007f7acae39000 RDI: 0000000000000005 RBP: 00007f7acb1e6980 R08: 0000000000000000 R09: 00000000c2ee2f26 R10: 000d423fac2c8d50 R11: 0000000000000293 R12: 000000000008fa9a R13: 00007fffd2f872c0 R14: 00007f7acb1e5120 R15: 0000000000000032