Warning: Permanently added '10.128.0.42' (ECDSA) to the list of known hosts. [ 61.941903][ T6851] IPVS: ftp: loaded support on port[0] = 21 [ 61.944005][ T6854] IPVS: ftp: loaded support on port[0] = 21 [ 61.953245][ T6853] IPVS: ftp: loaded support on port[0] = 21 [ 61.962579][ T6852] IPVS: ftp: loaded support on port[0] = 21 [ 61.978424][ T6847] IPVS: ftp: loaded support on port[0] = 21 [ 61.991503][ T6855] 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 [ 63.432088][ T7015] ================================================================== [ 63.440378][ T7015] BUG: KASAN: use-after-free in sco_chan_del+0xe6/0x430 [ 63.447320][ T7015] Write of size 4 at addr ffff888093210010 by task syz-executor708/7015 [ 63.456336][ T7015] [ 63.458681][ T7015] CPU: 0 PID: 7015 Comm: syz-executor708 Not tainted 5.8.0-syzkaller #0 [ 63.467005][ T7015] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.477420][ T7015] Call Trace: executing program executing program executing program executing program executing program executing program [ 63.480809][ T7015] dump_stack+0x18f/0x20d [ 63.485411][ T7015] ? sco_chan_del+0xe6/0x430 [ 63.490010][ T7015] ? sco_chan_del+0xe6/0x430 [ 63.494607][ T7015] ? __sock_release+0x280/0x280 [ 63.499469][ T7015] print_address_description.constprop.0.cold+0xae/0x436 [ 63.506509][ T7015] ? sco_chan_del+0xab/0x430 [ 63.511121][ T7015] ? vprintk_func+0x97/0x1a6 [ 63.515724][ T7015] ? sco_chan_del+0xe6/0x430 [ 63.520338][ T7015] kasan_report.cold+0x1f/0x37 [ 63.525115][ T7015] ? sco_chan_del+0xe6/0x430 [ 63.529723][ T7015] check_memory_region+0x13d/0x180 [ 63.535021][ T7015] sco_chan_del+0xe6/0x430 [ 63.539453][ T7015] __sco_sock_close+0x16e/0x5b0 [ 63.544318][ T7015] sco_sock_release+0x69/0x290 [ 63.549095][ T7015] __sock_release+0xcd/0x280 [ 63.553695][ T7015] sock_close+0x18/0x20 [ 63.557860][ T7015] __fput+0x33c/0x880 [ 63.562314][ T7015] task_work_run+0xdd/0x190 [ 63.566835][ T7015] get_signal+0xd6c/0x1ee0 [ 63.571267][ T7015] ? kick_process+0xce/0x150 [ 63.575867][ T7015] ? task_work_add+0xe3/0x250 [ 63.580569][ T7015] arch_do_signal+0x82/0x2520 [ 63.585262][ T7015] ? fput_many+0xf6/0x1a0 [ 63.589603][ T7015] ? copy_siginfo_to_user32+0xa0/0xa0 [ 63.594981][ T7015] ? __sys_connect+0x109/0x190 [ 63.599754][ T7015] ? __sys_connect_file+0x1a0/0x1a0 [ 63.604957][ T7015] ? lock_is_held_type+0xbb/0xf0 [ 63.609888][ T7015] ? exit_to_user_mode_prepare+0xce/0x1d0 [ 63.615590][ T7015] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 63.621558][ T7015] exit_to_user_mode_prepare+0x172/0x1d0 [ 63.627175][ T7015] syscall_exit_to_user_mode+0x59/0x2b0 [ 63.633487][ T7015] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 63.639377][ T7015] RIP: 0033:0x4471b9 [ 63.643256][ T7015] 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 [ 63.663017][ T7015] RSP: 002b:00007fe77ae29db8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 63.671414][ T7015] RAX: fffffffffffffffc RBX: 00000000006dcc28 RCX: 00000000004471b9 [ 63.679384][ T7015] RDX: 0000000000000008 RSI: 0000000020000080 RDI: 0000000000000004 [ 63.687337][ T7015] RBP: 00000000006dcc20 R08: 0000000000000000 R09: 0000000000000000 [ 63.695288][ T7015] R10: 0000000000000002 R11: 0000000000000246 R12: 00000000006dcc2c [ 63.703240][ T7015] R13: 00007ffe998889ff R14: 00007fe77ae2a9c0 R15: 0000000000000064 [ 63.711220][ T7015] [ 63.713528][ T7015] Allocated by task 7015: [ 63.717840][ T7015] save_stack+0x1b/0x40 [ 63.721975][ T7015] __kasan_kmalloc.constprop.0+0xc2/0xd0 [ 63.727600][ T7015] kmem_cache_alloc_trace+0x14f/0x2d0 [ 63.732952][ T7015] hci_conn_add+0x53/0x1340 [ 63.737436][ T7015] hci_connect_sco+0x350/0x860 [ 63.742182][ T7015] sco_sock_connect+0x308/0x980 [ 63.747015][ T7015] __sys_connect_file+0x155/0x1a0 [ 63.752033][ T7015] __sys_connect+0x160/0x190 [ 63.756603][ T7015] __x64_sys_connect+0x6f/0xb0 [ 63.761346][ T7015] do_syscall_64+0x2d/0x70 [ 63.765748][ T7015] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 63.771717][ T7015] [ 63.774025][ T7015] Freed by task 7004: [ 63.777986][ T7015] save_stack+0x1b/0x40 [ 63.782120][ T7015] __kasan_slab_free+0xf5/0x140 [ 63.786949][ T7015] kfree+0x103/0x2c0 [ 63.790825][ T7015] device_release+0x71/0x200 [ 63.795393][ T7015] kobject_put+0x171/0x270 [ 63.799805][ T7015] put_device+0x1b/0x30 [ 63.803941][ T7015] hci_conn_del+0x27e/0x6a0 [ 63.808427][ T7015] hci_phy_link_complete_evt.isra.0+0x508/0x790 [ 63.814647][ T7015] hci_event_packet+0x481a/0x86f5 [ 63.819649][ T7015] hci_rx_work+0x22e/0xb10 [ 63.824068][ T7015] process_one_work+0x94c/0x1670 [ 63.828985][ T7015] worker_thread+0x64c/0x1120 [ 63.833641][ T7015] kthread+0x3b5/0x4a0 [ 63.837692][ T7015] ret_from_fork+0x1f/0x30 [ 63.842080][ T7015] [ 63.844388][ T7015] The buggy address belongs to the object at ffff888093210000 [ 63.844388][ T7015] which belongs to the cache kmalloc-4k of size 4096 [ 63.858423][ T7015] The buggy address is located 16 bytes inside of [ 63.858423][ T7015] 4096-byte region [ffff888093210000, ffff888093211000) [ 63.871666][ T7015] The buggy address belongs to the page: [ 63.877285][ T7015] page:ffffea00024c8400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 head:ffffea00024c8400 order:1 compound_mapcount:0 [ 63.890710][ T7015] flags: 0xfffe0000010200(slab|head) [ 63.895980][ T7015] raw: 00fffe0000010200 ffffea00024a1c88 ffffea00024a9808 ffff8880aa002000 [ 63.904566][ T7015] raw: 0000000000000000 ffff888093210000 0000000100000001 0000000000000000 [ 63.913124][ T7015] page dumped because: kasan: bad access detected [ 63.919511][ T7015] [ 63.921818][ T7015] Memory state around the buggy address: [ 63.927429][ T7015] ffff88809320ff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 63.935571][ T7015] ffff88809320ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 63.943612][ T7015] >ffff888093210000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 63.952082][ T7015] ^ [ 63.956653][ T7015] ffff888093210080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 63.964692][ T7015] ffff888093210100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 63.972744][ T7015] ================================================================== executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 63.980779][ T7015] Disabling lock debugging due to kernel taint [ 64.039624][ T7015] Kernel panic - not syncing: panic_on_warn set ... [ 64.046246][ T7015] CPU: 0 PID: 7015 Comm: syz-executor708 Tainted: G B 5.8.0-syzkaller #0 [ 64.055954][ T7015] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 64.066125][ T7015] Call Trace: [ 64.069505][ T7015] dump_stack+0x18f/0x20d [ 64.073840][ T7015] ? sco_chan_del+0x20/0x430 [ 64.078431][ T7015] ? __sock_release+0x280/0x280 [ 64.083279][ T7015] panic+0x2e3/0x75c [ 64.087176][ T7015] ? __warn_printk+0xf3/0xf3 [ 64.091768][ T7015] ? preempt_schedule_common+0x59/0xc0 [ 64.097234][ T7015] ? sco_chan_del+0xe6/0x430 [ 64.101828][ T7015] ? preempt_schedule_thunk+0x16/0x18 [ 64.107201][ T7015] ? trace_hardirqs_on+0x55/0x220 [ 64.112229][ T7015] ? sco_chan_del+0xe6/0x430 [ 64.116828][ T7015] ? sco_chan_del+0xe6/0x430 [ 64.121434][ T7015] ? __sock_release+0x280/0x280 [ 64.126286][ T7015] end_report+0x4d/0x53 [ 64.130448][ T7015] kasan_report.cold+0xd/0x37 [ 64.135130][ T7015] ? sco_chan_del+0xe6/0x430 [ 64.139725][ T7015] check_memory_region+0x13d/0x180 [ 64.144842][ T7015] sco_chan_del+0xe6/0x430 [ 64.149256][ T7015] __sco_sock_close+0x16e/0x5b0 [ 64.154083][ T7015] sco_sock_release+0x69/0x290 [ 64.158823][ T7015] __sock_release+0xcd/0x280 [ 64.163389][ T7015] sock_close+0x18/0x20 [ 64.167626][ T7015] __fput+0x33c/0x880 [ 64.171593][ T7015] task_work_run+0xdd/0x190 [ 64.176081][ T7015] get_signal+0xd6c/0x1ee0 [ 64.180470][ T7015] ? kick_process+0xce/0x150 [ 64.185037][ T7015] ? task_work_add+0xe3/0x250 [ 64.189703][ T7015] arch_do_signal+0x82/0x2520 [ 64.194355][ T7015] ? fput_many+0xf6/0x1a0 [ 64.198682][ T7015] ? copy_siginfo_to_user32+0xa0/0xa0 [ 64.204025][ T7015] ? __sys_connect+0x109/0x190 [ 64.208760][ T7015] ? __sys_connect_file+0x1a0/0x1a0 [ 64.213929][ T7015] ? lock_is_held_type+0xbb/0xf0 [ 64.218844][ T7015] ? exit_to_user_mode_prepare+0xce/0x1d0 [ 64.224536][ T7015] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 64.230494][ T7015] exit_to_user_mode_prepare+0x172/0x1d0 [ 64.236099][ T7015] syscall_exit_to_user_mode+0x59/0x2b0 [ 64.241625][ T7015] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 64.247487][ T7015] RIP: 0033:0x4471b9 [ 64.251368][ T7015] 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 [ 64.270944][ T7015] RSP: 002b:00007fe77ae29db8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 64.279334][ T7015] RAX: fffffffffffffffc RBX: 00000000006dcc28 RCX: 00000000004471b9 [ 64.288080][ T7015] RDX: 0000000000000008 RSI: 0000000020000080 RDI: 0000000000000004 [ 64.296090][ T7015] RBP: 00000000006dcc20 R08: 0000000000000000 R09: 0000000000000000 [ 64.304044][ T7015] R10: 0000000000000002 R11: 0000000000000246 R12: 00000000006dcc2c [ 64.312036][ T7015] R13: 00007ffe998889ff R14: 00007fe77ae2a9c0 R15: 0000000000000064 [ 64.321334][ T7015] Kernel Offset: disabled [ 64.325669][ T7015] Rebooting in 86400 seconds..