Warning: Permanently added '10.128.0.69' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 67.545926][ T6547] general protection fault, probably for non-canonical address 0xdffffc0000000023: 0000 [#1] PREEMPT SMP KASAN [ 67.557649][ T6547] KASAN: null-ptr-deref in range [0x0000000000000118-0x000000000000011f] [ 67.566035][ T6547] CPU: 0 PID: 6547 Comm: syz-executor308 Not tainted 5.14.0-rc5-next-20210810-syzkaller #0 [ 67.576020][ T6547] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.586092][ T6547] RIP: 0010:destroy_workqueue+0x2e/0x800 [ 67.591745][ T6547] Code: 49 89 fe 41 55 41 54 55 53 48 83 ec 08 e8 ea 57 29 00 49 8d be 18 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 2e 07 00 00 49 8b 9e 18 01 00 00 48 85 db 74 19 [ 67.611332][ T6547] RSP: 0018:ffffc9000256fa98 EFLAGS: 00010202 [ 67.617375][ T6547] RAX: dffffc0000000000 RBX: dffffc0000000000 RCX: 0000000000000000 [ 67.625359][ T6547] RDX: 0000000000000023 RSI: ffffffff814c4e76 RDI: 0000000000000118 [ 67.633309][ T6547] RBP: ffff88807f599340 R08: 0000000000000000 R09: 0000000000000000 [ 67.641261][ T6547] R10: ffffffff81a39af8 R11: 0000000000000000 R12: ffff88807f598000 [ 67.649211][ T6547] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 67.657158][ T6547] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 67.666079][ T6547] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 67.672728][ T6547] CR2: 0000000000480da8 CR3: 000000000b68e000 CR4: 00000000001506f0 [ 67.680680][ T6547] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 67.688640][ T6547] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 67.696590][ T6547] Call Trace: [ 67.699854][ T6547] hci_release_dev+0x125/0xb70 [ 67.704605][ T6547] ? devres_release_all+0x1b4/0x240 [ 67.709783][ T6547] ? hci_bdaddr_list_clear+0x200/0x200 [ 67.715224][ T6547] ? kfree+0x38a/0x530 [ 67.719271][ T6547] ? hci_uart_tty_close+0x17c/0x2a0 [ 67.724457][ T6547] bt_host_release+0x15/0x20 [ 67.729024][ T6547] ? __match_tty+0x90/0x90 [ 67.733415][ T6547] device_release+0x9f/0x240 [ 67.737983][ T6547] kobject_put+0x1c8/0x540 [ 67.742378][ T6547] put_device+0x1b/0x30 [ 67.746512][ T6547] hci_uart_tty_close+0x1e4/0x2a0 [ 67.751517][ T6547] ? hci_uart_close+0x70/0x70 [ 67.756174][ T6547] tty_ldisc_close+0x110/0x190 [ 67.760923][ T6547] tty_ldisc_kill+0x94/0x150 [ 67.765507][ T6547] tty_ldisc_release+0xe3/0x2a0 [ 67.770339][ T6547] tty_release_struct+0x20/0xe0 [ 67.775173][ T6547] tty_release+0xc70/0x1200 [ 67.779674][ T6547] __fput+0x288/0x920 [ 67.783637][ T6547] ? tty_release_struct+0xe0/0xe0 [ 67.788641][ T6547] ? _raw_spin_unlock_irq+0x1f/0x40 [ 67.793822][ T6547] task_work_run+0xdd/0x1a0 [ 67.798307][ T6547] do_exit+0xbd4/0x2a60 [ 67.802443][ T6547] ? __context_tracking_exit+0xb8/0xe0 [ 67.807894][ T6547] ? lock_downgrade+0x6e0/0x6e0 [ 67.812729][ T6547] ? lock_downgrade+0x6e0/0x6e0 [ 67.817558][ T6547] ? mm_update_next_owner+0x7a0/0x7a0 [ 67.822908][ T6547] ? get_vtime_delta+0x26e/0x420 [ 67.827827][ T6547] do_group_exit+0x125/0x310 [ 67.832410][ T6547] __x64_sys_exit_group+0x3a/0x50 [ 67.837434][ T6547] do_syscall_64+0x35/0xb0 [ 67.841841][ T6547] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 67.847713][ T6547] RIP: 0033:0x43da49 [ 67.851604][ T6547] Code: Unable to access opcode bytes at RIP 0x43da1f. [ 67.858420][ T6547] RSP: 002b:00007ffe95506388 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 67.866813][ T6547] RAX: ffffffffffffffda RBX: 00000000004ae230 RCX: 000000000043da49 [ 67.874761][ T6547] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 67.882712][ T6547] RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 0000000000400488 [ 67.890664][ T6547] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004ae230 [ 67.898613][ T6547] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 67.906569][ T6547] Modules linked in: [ 67.911350][ T6547] ---[ end trace 8b9f8758c6d53c87 ]--- [ 67.917658][ T6547] RIP: 0010:destroy_workqueue+0x2e/0x800 [ 67.923317][ T6547] Code: 49 89 fe 41 55 41 54 55 53 48 83 ec 08 e8 ea 57 29 00 49 8d be 18 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 2e 07 00 00 49 8b 9e 18 01 00 00 48 85 db 74 19 [ 67.943092][ T6547] RSP: 0018:ffffc9000256fa98 EFLAGS: 00010202 [ 67.949196][ T6547] RAX: dffffc0000000000 RBX: dffffc0000000000 RCX: 0000000000000000 [ 67.957204][ T6547] RDX: 0000000000000023 RSI: ffffffff814c4e76 RDI: 0000000000000118 [ 67.965205][ T6547] RBP: ffff88807f599340 R08: 0000000000000000 R09: 0000000000000000 [ 67.973175][ T6547] R10: ffffffff81a39af8 R11: 0000000000000000 R12: ffff88807f598000 [ 67.981173][ T6547] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 67.989168][ T6547] FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 67.998127][ T6547] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 68.004704][ T6547] CR2: 00007f03ef2c5000 CR3: 000000000b68e000 CR4: 00000000001506e0 [ 68.012696][ T6547] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 68.020701][ T6547] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 68.028712][ T6547] Kernel panic - not syncing: Fatal exception [ 68.036069][ T6547] Kernel Offset: disabled [ 68.040375][ T6547] Rebooting in 86400 seconds..