[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.221' (ECDSA) to the list of known hosts. syzkaller login: [ 38.772362] audit: type=1400 audit(1596520116.076:8): avc: denied { execmem } for pid=6473 comm="syz-executor367" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 38.794476] IPVS: ftp: loaded support on port[0] = 21 [ 38.812114] IPVS: ftp: loaded support on port[0] = 21 [ 38.813462] IPVS: ftp: loaded support on port[0] = 21 [ 38.821697] IPVS: ftp: loaded support on port[0] = 21 [ 38.828807] IPVS: ftp: loaded support on port[0] = 21 [ 38.838175] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 42.044419] Bluetooth: hci0: command 0x0409 tx timeout executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 42.214672] Bluetooth: hci2: command 0x0409 tx timeout [ 42.223037] Bluetooth: hci4: command 0x0409 tx timeout [ 42.234429] Bluetooth: hci1: command 0x0409 tx timeout [ 42.246349] Bluetooth: hci3: command 0x0409 tx timeout [ 42.254331] Bluetooth: hci5: command 0x0409 tx timeout executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 44.122641] Bluetooth: hci0: command 0x041b tx timeout executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 44.282569] Bluetooth: hci1: command 0x041b tx timeout [ 44.282593] Bluetooth: hci5: command 0x041b tx timeout [ 44.287891] Bluetooth: hci4: command 0x041b tx timeout [ 44.287907] Bluetooth: hci2: command 0x041b tx timeout [ 44.310700] Bluetooth: hci3: command 0x041b tx timeout executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 45.145043] ================================================================== [ 45.152556] BUG: KASAN: use-after-free in sco_chan_del+0xe6/0x420 [ 45.158783] Write of size 4 at addr ffff8880a1256210 by task syz-executor367/6645 [ 45.166383] [ 45.168012] CPU: 1 PID: 6645 Comm: syz-executor367 Not tainted 4.19.136-syzkaller #0 [ 45.175883] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.185230] Call Trace: [ 45.187825] dump_stack+0x1fc/0x2fe executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 45.191463] print_address_description.cold+0x54/0x219 [ 45.196745] kasan_report_error.cold+0x8a/0x1c7 [ 45.201423] ? sco_chan_del+0xe6/0x420 [ 45.205317] kasan_report+0x8f/0x96 [ 45.208948] ? sco_chan_del+0xe6/0x420 [ 45.212845] sco_chan_del+0xe6/0x420 [ 45.216567] __sco_sock_close+0xc3/0x720 [ 45.220719] sco_sock_release+0x6b/0x3d0 [ 45.224786] __sock_release+0xcd/0x2a0 [ 45.228676] ? __sock_release+0x2a0/0x2a0 [ 45.232822] sock_close+0x15/0x20 [ 45.236283] __fput+0x2ce/0x890 [ 45.239572] task_work_run+0x148/0x1c0 [ 45.243468] do_exit+0xbb2/0x2b70 [ 45.246928] ? bt_sock_wait_state+0x418/0x540 [ 45.251426] ? mm_update_next_owner+0x650/0x650 [ 45.256102] ? get_signal+0x388/0x1f70 [ 45.259997] ? lock_downgrade+0x720/0x720 [ 45.264156] ? lock_acquire+0x170/0x3c0 [ 45.268143] do_group_exit+0x125/0x310 [ 45.272035] get_signal+0x3f2/0x1f70 [ 45.275764] do_signal+0x8f/0x1670 [ 45.279310] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 45.283903] ? sco_sock_connect+0x540/0x970 [ 45.288237] ? __local_bh_enable_ip+0x159/0x270 [ 45.292906] ? setup_sigcontext+0x820/0x820 [ 45.297239] ? sco_sock_create+0x100/0x100 [ 45.301484] ? __ia32_sys_accept+0xb0/0xb0 [ 45.305724] ? blkcg_maybe_throttle_current+0x56c/0xc10 [ 45.311099] ? lock_acquire+0x170/0x3c0 [ 45.315075] ? task_work_run+0x64/0x1c0 [ 45.319053] ? blkcg_schedule_throttle+0x1f0/0x1f0 [ 45.323986] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 45.328578] ? _raw_spin_unlock_irq+0x5a/0x80 [ 45.333075] ? task_work_run+0x126/0x1c0 [ 45.337142] ? exit_to_usermode_loop+0x36/0x2a0 [ 45.341815] exit_to_usermode_loop+0x204/0x2a0 [ 45.346402] do_syscall_64+0x538/0x620 [ 45.350297] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 45.355486] RIP: 0033:0x446e69 [ 45.358683] Code: Bad RIP value. [ 45.362043] RSP: 002b:00007fff82f03958 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 45.369751] RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000446e69 [ 45.377193] RDX: 0000000000000008 RSI: 0000000020000080 RDI: 0000000000000004 [ 45.384464] RBP: 0000000000000004 R08: 0000000000000002 R09: 00000003000100ff [ 45.391732] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000000 [ 45.398999] R13: 0000000000407ac0 R14: 0000000000000000 R15: 0000000000000000 [ 45.406283] [ 45.407908] Allocated by task 6645: [ 45.411541] kmem_cache_alloc_trace+0x12f/0x380 [ 45.416210] hci_conn_add+0x53/0x11e0 [ 45.420014] hci_connect_sco+0x2fc/0x950 [ 45.424074] sco_sock_connect+0x2ff/0x970 [ 45.428225] __sys_connect+0x265/0x2c0 [ 45.432118] __x64_sys_connect+0x6f/0xb0 [ 45.438788] do_syscall_64+0xf9/0x620 [ 45.442608] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 45.447790] [ 45.449421] Freed by task 6641: [ 45.452703] kfree+0xcc/0x210 [ 45.455813] device_release+0x76/0x210 [ 45.459705] kobject_put+0x22d/0x350 [ 45.463420] put_device+0x1c/0x30 [ 45.466872] hci_conn_del+0x27e/0x6a0 [ 45.478226] hci_phy_link_complete_evt.isra.0+0x5a4/0x7a0 [ 45.483768] hci_event_packet+0x1973/0x858f [ 45.488092] hci_rx_work+0x46b/0xa90 [ 45.491806] process_one_work+0x864/0x1570 [ 45.496734] worker_thread+0x64c/0x1130 [ 45.500716] kthread+0x30b/0x410 [ 45.504084] ret_from_fork+0x24/0x30 [ 45.507877] [ 45.509506] The buggy address belongs to the object at ffff8880a1256200 [ 45.509506] which belongs to the cache kmalloc-4096 of size 4096 [ 45.522345] The buggy address is located 16 bytes inside of [ 45.522345] 4096-byte region [ffff8880a1256200, ffff8880a1257200) [ 45.534222] The buggy address belongs to the page: [ 45.539171] page:ffffea0002849580 count:1 mapcount:0 mapping:ffff88812c39cdc0 index:0x0 compound_mapcount: 0 [ 45.549232] flags: 0xfffe0000008100(slab|head) [ 45.553828] raw: 00fffe0000008100 ffffea0002930e88 ffffea0002224188 ffff88812c39cdc0 [ 45.561718] raw: 0000000000000000 ffff8880a1256200 0000000100000001 0000000000000000 [ 45.569792] page dumped because: kasan: bad access detected [ 45.575584] [ 45.577205] Memory state around the buggy address: [ 45.582134] ffff8880a1256100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 45.589494] ffff8880a1256180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 45.596854] >ffff8880a1256200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 45.604209] ^ [ 45.608093] ffff8880a1256280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 45.615728] ffff8880a1256300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 45.623086] ================================================================== [ 45.630441] Disabling lock debugging due to kernel taint executing program executing program executing program executing program executing program [ 45.691547] Kernel panic - not syncing: panic_on_warn set ... [ 45.691547] [ 45.698941] CPU: 1 PID: 6645 Comm: syz-executor367 Tainted: G B 4.19.136-syzkaller #0 [ 45.708189] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.717522] Call Trace: [ 45.720094] dump_stack+0x1fc/0x2fe [ 45.723704] panic+0x26a/0x50e [ 45.726875] ? __warn_printk+0xf3/0xf3 [ 45.730904] ? preempt_schedule_common+0x45/0xc0 [ 45.735648] ? ___preempt_schedule+0x16/0x18 [ 45.740037] ? trace_hardirqs_on+0x55/0x210 [ 45.744339] kasan_end_report+0x43/0x49 [ 45.748292] kasan_report_error.cold+0xa7/0x1c7 [ 45.752944] ? sco_chan_del+0xe6/0x420 [ 45.756810] kasan_report+0x8f/0x96 [ 45.760415] ? sco_chan_del+0xe6/0x420 [ 45.764282] sco_chan_del+0xe6/0x420 [ 45.767977] __sco_sock_close+0xc3/0x720 [ 45.772020] sco_sock_release+0x6b/0x3d0 [ 45.776061] __sock_release+0xcd/0x2a0 [ 45.779928] ? __sock_release+0x2a0/0x2a0 [ 45.784054] sock_close+0x15/0x20 [ 45.787488] __fput+0x2ce/0x890 [ 45.790748] task_work_run+0x148/0x1c0 [ 45.794621] do_exit+0xbb2/0x2b70 [ 45.798062] ? bt_sock_wait_state+0x418/0x540 [ 45.802539] ? mm_update_next_owner+0x650/0x650 [ 45.807276] ? get_signal+0x388/0x1f70 [ 45.811155] ? lock_downgrade+0x720/0x720 [ 45.815291] ? lock_acquire+0x170/0x3c0 [ 45.819249] do_group_exit+0x125/0x310 [ 45.823126] get_signal+0x3f2/0x1f70 [ 45.826826] do_signal+0x8f/0x1670 [ 45.830350] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 45.834917] ? sco_sock_connect+0x540/0x970 [ 45.839222] ? __local_bh_enable_ip+0x159/0x270 [ 45.843874] ? setup_sigcontext+0x820/0x820 [ 45.848177] ? sco_sock_create+0x100/0x100 [ 45.852394] ? __ia32_sys_accept+0xb0/0xb0 [ 45.856609] ? blkcg_maybe_throttle_current+0x56c/0xc10 [ 45.861955] ? lock_acquire+0x170/0x3c0 [ 45.865908] ? task_work_run+0x64/0x1c0 [ 45.869972] ? blkcg_schedule_throttle+0x1f0/0x1f0 [ 45.874889] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 45.879478] ? _raw_spin_unlock_irq+0x5a/0x80 [ 45.883956] ? task_work_run+0x126/0x1c0 [ 45.888111] ? exit_to_usermode_loop+0x36/0x2a0 [ 45.892872] exit_to_usermode_loop+0x204/0x2a0 [ 45.897450] do_syscall_64+0x538/0x620 [ 45.901325] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 45.906630] RIP: 0033:0x446e69 [ 45.909811] Code: e8 4c e7 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 3b 07 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 45.928693] RSP: 002b:00007fff82f03958 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 45.936381] RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000446e69 [ 45.943717] RDX: 0000000000000008 RSI: 0000000020000080 RDI: 0000000000000004 [ 45.950964] RBP: 0000000000000004 R08: 0000000000000002 R09: 00000003000100ff [ 45.958213] R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000000 [ 45.965460] R13: 0000000000407ac0 R14: 0000000000000000 R15: 0000000000000000 [ 45.973900] Kernel Offset: disabled [ 45.977533] Rebooting in 86400 seconds..