audit: type=1800 audit(1618575917.148:34661): pid=2742 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed" comm="syz-executor.0" name="SYSV00000000" dev="hugetlbfs" ino=557070 res=0 audit: type=1800 audit(1618575917.488:34662): pid=2752 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed" comm="syz-executor.5" name="SYSV00000000" dev="hugetlbfs" ino=458760 res=0 watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor.1:2033] Modules linked in: irq event stamp: 3293008 hardirqs last enabled at (3293007): [] restore_regs_and_return_to_kernel+0x0/0x2a hardirqs last disabled at (3293008): [] apic_timer_interrupt+0x8e/0xa0 arch/x86/entry/entry_64.S:793 softirqs last enabled at (172578): [] __do_softirq+0x68b/0x9ff kernel/softirq.c:314 softirqs last disabled at (172351): [] invoke_softirq kernel/softirq.c:368 [inline] softirqs last disabled at (172351): [] irq_exit+0x193/0x240 kernel/softirq.c:409 CPU: 0 PID: 2033 Comm: syz-executor.1 Not tainted 4.14.231-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff88809c69c580 task.stack: ffff888065c80000 RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:411 [inline] RIP: 0010:__pv_queued_spin_lock_slowpath+0x265/0x910 kernel/locking/qspinlock.c:465 RSP: 0018:ffff888065c876e8 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff10 RAX: 0000000000000003 RBX: ffff8880ba42ae80 RCX: fffffbfff13ba885 RDX: 0000000000004ebd RSI: 0000000000000004 RDI: 0000000000000286 RBP: ffffffff89dd442c R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 R13: dffffc0000000000 R14: ffffffff89dd442d R15: ffffed10174855d8 FS: 00007f19e8965700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000a40 CR3: 00000000ab306000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:669 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:52 [inline] queued_spin_lock include/asm-generic/qspinlock.h:90 [inline] queued_read_lock_slowpath+0x150/0x190 kernel/locking/qrwlock.c:90 hci_send_to_channel+0x3c/0x200 net/bluetooth/hci_sock.c:261 hci_send_monitor_ctrl_event+0x3dd/0x500 net/bluetooth/hci_sock.c:391 mgmt_send_event+0x2b3/0x330 net/bluetooth/mgmt_util.c:86 mgmt_limited_event net/bluetooth/mgmt.c:260 [inline] new_settings net/bluetooth/mgmt.c:1089 [inline] __mgmt_power_off+0x152/0x200 net/bluetooth/mgmt.c:6688 hci_dev_do_close+0x968/0xca0 net/bluetooth/hci_core.c:1618 hci_unregister_dev+0x17f/0x8c0 net/bluetooth/hci_core.c:3193 vhci_release+0x70/0xe0 drivers/bluetooth/hci_vhci.c:354 __fput+0x25f/0x7a0 fs/file_table.c:210 task_work_run+0x11f/0x190 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0xa44/0x2850 kernel/exit.c:868 do_group_exit+0x100/0x2e0 kernel/exit.c:965 get_signal+0x38d/0x1ca0 kernel/signal.c:2423 do_signal+0x7c/0x1550 arch/x86/kernel/signal.c:792 exit_to_usermode_loop+0x160/0x200 arch/x86/entry/common.c:160 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x466459 RSP: 002b:00007f19e8965218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000056bf68 RCX: 0000000000466459 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000056bf68 RBP: 000000000056bf60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf6c R13: 00007ffd0830ab6f R14: 00007f19e8965300 R15: 0000000000022000 Code: 84 c0 0f 85 2e 04 00 00 48 89 e9 48 89 ee c6 45 01 01 ba 00 80 00 00 48 c1 e9 03 83 e6 07 41 b8 01 00 00 00 4c 01 e9 eb 0b f3 90 <83> ea 01 0f 84 42 04 00 00 0f b6 01 40 38 f0 7f 08 84 c0 0f 85 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 2761 Comm: syz-executor.3 Not tainted 4.14.231-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff88806b45a200 task.stack: ffff888075cc8000 RIP: 0010:__read_once_size include/linux/compiler.h:183 [inline] RIP: 0010:atomic_read arch/x86/include/asm/atomic.h:27 [inline] RIP: 0010:queued_write_lock_slowpath+0xcb/0x1d0 kernel/locking/qrwlock.c:139 RSP: 0018:ffff888075ccfd38 EFLAGS: 00000206 RAX: 0000000000000101 RBX: ffffffff89dd4428 RCX: 00000000000030dc RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffffff89dd4428 RBP: ffffffff89dd442c R08: ffffffff8b9a81a0 R09: 0000000000040591 R10: ffff88806b45aab0 R11: ffff88806b45a200 R12: 0000000000000003 R13: fffffbfff13ba885 R14: 00000000000000ff R15: ffffffff8863a320 FS: 000000000338a400(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000564dfcef25e0 CR3: 000000005b686000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: queued_write_lock include/asm-generic/qrwlock.h:134 [inline] do_raw_write_lock+0xc2/0x1d0 kernel/locking/spinlock_debug.c:203 bt_sock_link+0x1f/0x120 net/bluetooth/af_bluetooth.c:143 hci_sock_create+0x15c/0x1d0 net/bluetooth/hci_sock.c:2017 bt_sock_create+0x13b/0x280 net/bluetooth/af_bluetooth.c:130 __sock_create+0x303/0x620 net/socket.c:1275 sock_create net/socket.c:1315 [inline] SYSC_socket net/socket.c:1345 [inline] SyS_socket+0xd1/0x1b0 net/socket.c:1325 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x467ac7 RSP: 002b:00007ffe99243588 EFLAGS: 00000206 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 00007ffe99243c28 RCX: 0000000000467ac7 RDX: 0000000000000001 RSI: 0000000000000003 RDI: 000000000000001f RBP: 00007ffe992436c0 R08: 00000000004af718 R09: 00007ffe99243070 R10: 0000000000000000 R11: 0000000000000206 R12: 00000000ffffffff R13: 000000000056ca68 R14: 0000000000000000 R15: 00000000000000f8 Code: 75 dc 49 89 dd 49 89 dc 41 be ff 00 00 00 49 c1 ed 03 41 83 e4 07 48 b8 00 00 00 00 00 fc ff df 49 01 c5 41 83 c4 03 eb 02 f3 90 <41> 0f b6 45 00 41 38 c4 7c 08 84 c0 0f 85 9e 00 00 00 8b 03 83