[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.176' (ECDSA) to the list of known hosts. syzkaller login: [ 33.957486] IPVS: ftp: loaded support on port[0] = 21 [ 34.046757] Bluetooth: hci0: advertising data len corrected [ 34.052656] ================================================================== [ 34.060140] BUG: KASAN: slab-out-of-bounds in hci_le_meta_evt+0x383e/0x3f20 [ 34.067239] Read of size 1 at addr ffff8880955af18d by task kworker/u5:2/8123 [ 34.074508] [ 34.076124] CPU: 0 PID: 8123 Comm: kworker/u5:2 Not tainted 4.19.211-syzkaller #0 [ 34.083735] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 34.093114] Workqueue: hci0 hci_rx_work [ 34.097135] Call Trace: [ 34.099716] dump_stack+0x1fc/0x2ef [ 34.103351] print_address_description.cold+0x54/0x219 [ 34.108636] kasan_report_error.cold+0x8a/0x1b9 [ 34.113300] ? hci_le_meta_evt+0x383e/0x3f20 [ 34.117714] __asan_report_load1_noabort+0x88/0x90 [ 34.122653] ? hci_le_meta_evt+0x383e/0x3f20 [ 34.127070] hci_le_meta_evt+0x383e/0x3f20 [ 34.131308] ? deref_stack_reg+0x134/0x1d0 [ 34.135535] ? hci_cmd_status_evt+0x6fc0/0x6fc0 [ 34.140195] ? __lock_acquire+0x6de/0x3ff0 [ 34.144436] ? __lock_acquire+0x6de/0x3ff0 [ 34.148674] ? __lock_acquire+0x6de/0x3ff0 [ 34.152912] hci_event_packet+0x34ad/0x7e20 [ 34.157342] ? mark_held_locks+0xf0/0xf0 [ 34.161408] ? __lock_acquire+0x6de/0x3ff0 [ 34.165651] ? hci_cmd_complete_evt+0xc280/0xc280 [ 34.170495] ? mark_held_locks+0xf0/0xf0 [ 34.174549] ? debug_object_deactivate+0x1f9/0x2e0 [ 34.179477] ? mark_held_locks+0xa6/0xf0 [ 34.183531] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 34.188623] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 34.193199] hci_rx_work+0x4ad/0xc70 [ 34.196906] process_one_work+0x864/0x1570 [ 34.201220] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 34.205890] worker_thread+0x64c/0x1130 [ 34.210982] ? __kthread_parkme+0x133/0x1e0 [ 34.215290] ? process_one_work+0x1570/0x1570 [ 34.219769] kthread+0x33f/0x460 [ 34.223119] ? kthread_park+0x180/0x180 [ 34.227080] ret_from_fork+0x24/0x30 [ 34.230780] [ 34.232391] Allocated by task 8116: [ 34.236009] __kmalloc_node_track_caller+0x4c/0x70 [ 34.240939] __alloc_skb+0xae/0x560 [ 34.244548] vhci_write+0xbd/0x450 [ 34.248080] __vfs_write+0x51b/0x770 [ 34.251778] vfs_write+0x1f3/0x540 [ 34.255300] ksys_write+0x12b/0x2a0 [ 34.259000] do_syscall_64+0xf9/0x620 [ 34.262783] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.267948] [ 34.269560] Freed by task 6538: [ 34.272825] kfree+0xcc/0x210 [ 34.275912] skb_release_data+0x6de/0x920 [ 34.280050] consume_skb+0x113/0x3d0 [ 34.283745] netlink_unicast+0x4dd/0x690 [ 34.287788] netlink_sendmsg+0x6c3/0xc50 [ 34.291840] sock_sendmsg+0xc3/0x120 [ 34.295539] ___sys_sendmsg+0x7bb/0x8e0 [ 34.299504] __x64_sys_sendmsg+0x132/0x220 [ 34.303745] do_syscall_64+0xf9/0x620 [ 34.307537] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.312703] [ 34.314315] The buggy address belongs to the object at ffff8880955aed80 [ 34.314315] which belongs to the cache kmalloc-1024 of size 1024 [ 34.327131] The buggy address is located 13 bytes to the right of [ 34.327131] 1024-byte region [ffff8880955aed80, ffff8880955af180) [ 34.339508] The buggy address belongs to the page: [ 34.344426] page:ffffea0002556b80 count:1 mapcount:0 mapping:ffff88813bff0ac0 index:0xffff8880955afb00 compound_mapcount: 0 [ 34.355680] flags: 0xfff00000008100(slab|head) [ 34.360252] raw: 00fff00000008100 ffffea0002c96c08 ffff88813bff1838 ffff88813bff0ac0 [ 34.368120] raw: ffff8880955afb00 ffff8880955ae000 0000000100000006 0000000000000000 [ 34.375983] page dumped because: kasan: bad access detected [ 34.381676] [ 34.383284] Memory state around the buggy address: [ 34.388196] ffff8880955af080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 executing program [ 34.395536] ffff8880955af100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 34.402886] >ffff8880955af180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 34.410226] ^ [ 34.413837] ffff8880955af200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 34.421180] ffff8880955af280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 34.428532] ================================================================== [ 34.435872] Disabling lock debugging due to kernel taint [ 34.442374] Kernel panic - not syncing: panic_on_warn set ... [ 34.442374] [ 34.449754] CPU: 0 PID: 8123 Comm: kworker/u5:2 Tainted: G B 4.19.211-syzkaller #0 [ 34.458759] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 34.468119] Workqueue: hci0 hci_rx_work [ 34.472096] Call Trace: [ 34.474668] dump_stack+0x1fc/0x2ef [ 34.478273] panic+0x26a/0x50e [ 34.481447] ? __warn_printk+0xf3/0xf3 [ 34.485313] ? preempt_schedule_common+0x45/0xc0 [ 34.490057] ? ___preempt_schedule+0x16/0x18 [ 34.495792] ? trace_hardirqs_on+0x55/0x210 [ 34.500095] kasan_end_report+0x43/0x49 [ 34.504050] kasan_report_error.cold+0xa7/0x1b9 [ 34.508695] ? hci_le_meta_evt+0x383e/0x3f20 [ 34.513170] __asan_report_load1_noabort+0x88/0x90 [ 34.518099] ? hci_le_meta_evt+0x383e/0x3f20 [ 34.522486] hci_le_meta_evt+0x383e/0x3f20 [ 34.526700] ? deref_stack_reg+0x134/0x1d0 [ 34.530913] ? hci_cmd_status_evt+0x6fc0/0x6fc0 [ 34.535558] ? __lock_acquire+0x6de/0x3ff0 [ 34.539768] ? __lock_acquire+0x6de/0x3ff0 [ 34.543987] ? __lock_acquire+0x6de/0x3ff0 [ 34.548202] hci_event_packet+0x34ad/0x7e20 [ 34.552503] ? mark_held_locks+0xf0/0xf0 [ 34.556542] ? __lock_acquire+0x6de/0x3ff0 [ 34.560756] ? hci_cmd_complete_evt+0xc280/0xc280 [ 34.565577] ? mark_held_locks+0xf0/0xf0 [ 34.569617] ? debug_object_deactivate+0x1f9/0x2e0 [ 34.574527] ? mark_held_locks+0xa6/0xf0 [ 34.578570] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 34.583650] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 34.588213] hci_rx_work+0x4ad/0xc70 [ 34.592032] process_one_work+0x864/0x1570 [ 34.596247] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 34.600900] worker_thread+0x64c/0x1130 [ 34.604854] ? __kthread_parkme+0x133/0x1e0 [ 34.609157] ? process_one_work+0x1570/0x1570 [ 34.613628] kthread+0x33f/0x460 [ 34.616970] ? kthread_park+0x180/0x180 [ 34.620927] ret_from_fork+0x24/0x30 [ 34.624794] Kernel Offset: disabled [ 34.628415] Rebooting in 86400 seconds..