tmpfs: No value for mount option '00000000000000060928' tmpfs: No value for mount option '00000000000000060928' tmpfs: No value for mount option '00000000000000060928' Bluetooth: hci4 command 0x0406 tx timeout INFO: task login:3342 blocked for more than 140 seconds. Not tainted 4.14.225-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. login D28072 3342 1 0x80000002 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3384 schedule+0x8d/0x1b0 kernel/sched/core.c:3428 schedule_timeout+0x80a/0xe90 kernel/time/timer.c:1724 down_write_failed drivers/tty/tty_ldsem.c:298 [inline] __ldsem_down_write_nested+0x2b9/0x700 drivers/tty/tty_ldsem.c:360 __tty_ldisc_lock drivers/tty/tty_ldisc.c:332 [inline] tty_ldisc_lock+0x4d/0x80 drivers/tty/tty_ldisc.c:356 tty_ldisc_hangup+0x1d3/0x6c0 drivers/tty/tty_ldisc.c:758 __tty_hangup.part.0+0x31a/0x730 drivers/tty/tty_io.c:622 __tty_hangup drivers/tty/tty_io.c:572 [inline] tty_vhangup_session+0x20/0x30 drivers/tty/tty_io.c:732 disassociate_ctty.part.0+0x98/0x750 drivers/tty/tty_jobctrl.c:266 disassociate_ctty+0x71/0x90 drivers/tty/tty_jobctrl.c:260 do_exit+0x162a/0x2850 kernel/exit.c:866 do_group_exit+0x100/0x2e0 kernel/exit.c:965 SYSC_exit_group kernel/exit.c:976 [inline] SyS_exit_group+0x19/0x20 kernel/exit.c:974 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7fea5ffc6618 RSP: 002b:00007ffc90a1d728 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 00007fea5ffc6618 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 0000000000000000 R08: 00000000000000e7 R09: ffffffffffffff98 R10: 000000000000037b R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000001 R14: 00007ffc90a1e2f8 R15: 00005604cbb2bb18 INFO: task syz-executor.3:6554 blocked for more than 140 seconds. Not tainted 4.14.225-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D29288 6554 2211 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3384 schedule+0x8d/0x1b0 kernel/sched/core.c:3428 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893 paste_selection+0x10e/0x420 drivers/tty/vt/selection.c:373 tioclinux+0xfd/0x490 drivers/tty/vt/vt.c:2714 vt_ioctl+0x11bd/0x1d50 drivers/tty/vt/vt_ioctl.c:372 tty_ioctl+0x50f/0x13c0 drivers/tty/tty_io.c:2661 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x465f69 RSP: 002b:00007f85a77b6188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000056c0b0 RCX: 0000000000465f69 RDX: 0000000020000100 RSI: 000000000000541c RDI: 0000000000000004 RBP: 00000000004bfa8f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c0b0 R13: 00007ffc42820e0f R14: 00007f85a77b6300 R15: 0000000000022000 INFO: task syz-executor.1:6555 blocked for more than 140 seconds. Not tainted 4.14.225-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D28584 6555 8000 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3384 schedule+0x8d/0x1b0 kernel/sched/core.c:3428 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893 paste_selection+0x10e/0x420 drivers/tty/vt/selection.c:373 tioclinux+0xfd/0x490 drivers/tty/vt/vt.c:2714 vt_ioctl+0x11bd/0x1d50 drivers/tty/vt/vt_ioctl.c:372 tty_ioctl+0x50f/0x13c0 drivers/tty/tty_io.c:2661 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x465f69 RSP: 002b:00007fd8c8ab8188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000056c008 RCX: 0000000000465f69 RDX: 0000000020000100 RSI: 000000000000541c RDI: 0000000000000004 RBP: 00000000004bfa8f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c008 R13: 00007fffd99354cf R14: 00007fd8c8ab8300 R15: 0000000000022000 INFO: task syz-executor.2:6561 blocked for more than 140 seconds. Not tainted 4.14.225-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D28200 6561 7998 0x00000000 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3384 schedule+0x8d/0x1b0 kernel/sched/core.c:3428 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3486 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893 paste_selection+0x10e/0x420 drivers/tty/vt/selection.c:373 tioclinux+0xfd/0x490 drivers/tty/vt/vt.c:2714 vt_ioctl+0x11bd/0x1d50 drivers/tty/vt/vt_ioctl.c:372 tty_ioctl+0x50f/0x13c0 drivers/tty/tty_io.c:2661 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x465f69 RSP: 002b:00007f5036a61188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465f69 RDX: 0000000020000100 RSI: 000000000000541c RDI: 0000000000000004 RBP: 00000000004bfa8f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007fff4e8de99f R14: 00007f5036a61300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/1527: #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4548 2 locks held by login/3342: #0: (&tty->legacy_mutex){+.+.}, at: [] tty_lock+0x5f/0x70 drivers/tty/tty_mutex.c:19 #1: (&tty->ldisc_sem){++++}, at: [] __tty_ldisc_lock drivers/tty/tty_ldisc.c:332 [inline] #1: (&tty->ldisc_sem){++++}, at: [] tty_ldisc_lock+0x4d/0x80 drivers/tty/tty_ldisc.c:356 2 locks held by syz-executor.2/6525: #0: (&tty->ldisc_sem){++++}, at: [] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284 #1: (&buf->lock){+.+.}, at: [] paste_selection+0x10e/0x420 drivers/tty/vt/selection.c:373 2 locks held by syz-executor.3/6554: #0: (&tty->ldisc_sem){++++}, at: [] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284 #1: (&buf->lock){+.+.}, at: [] paste_selection+0x10e/0x420 drivers/tty/vt/selection.c:373 2 locks held by syz-executor.1/6555: #0: (&tty->ldisc_sem){++++}, at: [] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284 #1: (&buf->lock){+.+.}, at: [] paste_selection+0x10e/0x420 drivers/tty/vt/selection.c:373 2 locks held by syz-executor.2/6561: #0: (&tty->ldisc_sem){++++}, at: [] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284 #1: (&buf->lock){+.+.}, at: [] paste_selection+0x10e/0x420 drivers/tty/vt/selection.c:373 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1527 Comm: khungtaskd Not tainted 4.14.225-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x13a/0x180 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline] watchdog+0x5b9/0xb40 kernel/hung_task.c:274 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 4626 Comm: systemd-journal Not tainted 4.14.225-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8880a0e5a1c0 task.stack: ffff8880a0e60000 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x50 kernel/kcov.c:60 RSP: 0018:ffff8880a0e678c8 EFLAGS: 00000297 RAX: ffff8880a0e5a1c0 RBX: ffff8880a0e5a1c0 RCX: 1ffffffff127a03c RDX: 0000000000000000 RSI: ffffffff87ccd680 RDI: ffffffff87ccd6c0 RBP: ffffffff87ccd6c0 R08: ffffffff8b9c2788 R09: 0000000000000000 R10: ffff88804860b73f R11: 0000000000000000 R12: 0000000000000000 R13: ffffffff87ccd680 R14: ffff8880b580d5c0 R15: ffff88808e78be30 FS: 00007f1f7b2ee8c0(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1f78b65000 CR3: 00000000a0f6a000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: check_preemption_disabled+0x35/0x240 lib/smp_processor_id.c:52 rcu_dynticks_curr_cpu_in_eqs kernel/rcu/tree.c:360 [inline] rcu_is_watching+0x11/0xb0 kernel/rcu/tree.c:1130 rcu_read_lock_held+0xba/0x110 kernel/rcu/update.c:328 hlist_bl_first_rcu include/linux/rculist_bl.h:24 [inline] __d_lookup_rcu+0x35d/0x640 fs/dcache.c:2203 lookup_fast+0xf0/0xe30 fs/namei.c:1595 walk_component+0xc0/0xbc0 fs/namei.c:1821 link_path_walk+0x823/0x10a0 fs/namei.c:2154 path_parentat+0x41/0x120 fs/namei.c:2398 filename_parentat+0x176/0x520 fs/namei.c:2420 filename_create+0x8a/0x3f0 fs/namei.c:3657 user_path_create fs/namei.c:3732 [inline] SYSC_mkdirat fs/namei.c:3864 [inline] SyS_mkdirat+0x95/0x270 fs/namei.c:3856 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f1f7a5aa687 RSP: 002b:00007ffc41946318 EFLAGS: 00000293 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffc41949230 RCX: 00007f1f7a5aa687 RDX: 00007f1f7b01ba00 RSI: 00000000000001ed RDI: 000056229f6c98a0 RBP: 00007ffc41946350 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000069 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ffc41949230 R15: 00007ffc41946840 Code: ff ff 48 89 df e8 61 88 29 00 e9 9f fe ff ff 4c 89 e7 e8 54 88 29 00 e9 2c fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <65> 48 8b 04 25 80 df 01 00 48 85 c0 74 1a 65 8b 15 cb bd ac 7e