last executing test programs: kernel console output (not intermixed with test programs): Warning: Permanently added '10.128.1.248' (ED25519) to the list of known hosts. 1970/01/01 00:00:33 fuzzer started 1970/01/01 00:00:33 dialing manager at 10.128.0.169:30028 [ 33.703128][ T6290] cgroup: Unknown subsys name 'net' [ 33.776053][ T6292] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k SS [ 33.918697][ T6290] cgroup: Unknown subsys name 'rlimit' 1970/01/01 00:00:34 starting 5 executor processes [ 34.781048][ T6311] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 34.803514][ T6314] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 34.805700][ T6314] Bluetooth: hci1: unexpected cc 0x0c03 length: 249 > 1 [ 34.807936][ T6314] Bluetooth: hci2: unexpected cc 0x0c03 length: 249 > 1 [ 34.821063][ T6316] Bluetooth: hci2: unexpected cc 0x1003 length: 249 > 9 [ 34.823840][ T6319] Bluetooth: hci1: unexpected cc 0x1003 length: 249 > 9 [ 34.825396][ T6316] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 34.828144][ T6322] Bluetooth: hci3: unexpected cc 0x0c03 length: 249 > 1 [ 34.829007][ T6316] Bluetooth: hci1: unexpected cc 0x1001 length: 249 > 9 [ 34.830590][ T6322] Bluetooth: hci2: unexpected cc 0x1001 length: 249 > 9 [ 34.832685][ T6316] Bluetooth: hci4: unexpected cc 0x0c03 length: 249 > 1 [ 34.834693][ T6322] Bluetooth: hci3: unexpected cc 0x1003 length: 249 > 9 [ 34.836549][ T6316] Bluetooth: hci4: unexpected cc 0x1003 length: 249 > 9 [ 34.837917][ T6322] Bluetooth: hci3: unexpected cc 0x1001 length: 249 > 9 [ 34.839594][ T6325] Bluetooth: hci4: unexpected cc 0x1001 length: 249 > 9 [ 34.841685][ T6322] Bluetooth: hci3: unexpected cc 0x0c23 length: 249 > 4 [ 34.843530][ T6325] Bluetooth: hci4: unexpected cc 0x0c23 length: 249 > 4 [ 34.845521][ T6322] Bluetooth: hci3: unexpected cc 0x0c25 length: 249 > 3 [ 34.846814][ T6325] Bluetooth: hci4: unexpected cc 0x0c25 length: 249 > 3 [ 34.848397][ T6322] Bluetooth: hci3: unexpected cc 0x0c38 length: 249 > 2 [ 34.850130][ T6325] Bluetooth: hci4: unexpected cc 0x0c38 length: 249 > 2 [ 34.854652][ T6318] ================================================================== [ 34.855003][ T6325] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 34.856830][ T6318] BUG: KASAN: slab-use-after-free in skb_release_data+0x504/0x618 [ 34.859235][ T6325] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [ 34.860745][ T6318] Read of size 1 at addr ffff0000ecd7ae3e by task syz-executor.0/6318 [ 34.864881][ T6318] [ 34.865466][ T6318] CPU: 1 PID: 6318 Comm: syz-executor.0 Tainted: G W 6.10.0-rc3-syzkaller-gac2193b4b460 #0 [ 34.868494][ T6318] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 34.871114][ T6318] Call trace: [ 34.871995][ T6318] dump_backtrace+0x1b8/0x1e4 [ 34.873310][ T6318] show_stack+0x2c/0x3c [ 34.873519][ T6325] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 34.874425][ T6318] dump_stack_lvl+0xe4/0x150 [ 34.877442][ T6318] print_report+0x198/0x538 [ 34.878669][ T6318] kasan_report+0xd8/0x138 [ 34.879811][ T6318] __asan_report_load1_noabort+0x20/0x2c [ 34.881312][ T6318] skb_release_data+0x504/0x618 [ 34.882652][ T6318] kfree_skb_reason+0x1b8/0x490 [ 34.883980][ T6318] __hci_req_sync+0x4e8/0x798 [ 34.885235][ T6318] hci_req_sync+0xa0/0xcc [ 34.886354][ T6318] hci_dev_cmd+0x304/0x8c0 [ 34.887507][ T6318] hci_sock_ioctl+0x4b8/0x7e4 [ 34.888747][ T6318] sock_do_ioctl+0x134/0x2d0 [ 34.889984][ T6318] sock_ioctl+0x4ec/0x838 [ 34.891176][ T6318] __arm64_sys_ioctl+0x14c/0x1c8 [ 34.892542][ T6318] invoke_syscall+0x98/0x2b8 [ 34.893802][ T6318] el0_svc_common+0x130/0x23c [ 34.894997][ T6318] do_el0_svc+0x48/0x58 [ 34.896129][ T6318] el0_svc+0x54/0x168 [ 34.897258][ T6318] el0t_64_sync_handler+0x84/0xfc [ 34.898599][ T6318] el0t_64_sync+0x190/0x194 [ 34.899851][ T6318] [ 34.900507][ T6318] Allocated by task 6325: [ 34.901714][ T6318] kasan_save_track+0x40/0x78 [ 34.902981][ T6318] kasan_save_alloc_info+0x40/0x50 [ 34.904361][ T6318] __kasan_slab_alloc+0x74/0x8c [ 34.905656][ T6318] kmem_cache_alloc_noprof+0x1c0/0x350 [ 34.907110][ T6318] skb_clone+0x1c8/0x330 [ 34.908259][ T6318] hci_cmd_work+0x174/0x568 [ 34.909494][ T6318] process_one_work+0x79c/0x15b8 [ 34.910790][ T6318] worker_thread+0x938/0xef4 [ 34.912048][ T6318] kthread+0x288/0x310 [ 34.913115][ T6318] ret_from_fork+0x10/0x20 [ 34.914331][ T6318] [ 34.914951][ T6318] Freed by task 6319: [ 34.916001][ T6318] kasan_save_track+0x40/0x78 [ 34.917202][ T6318] kasan_save_free_info+0x54/0x6c [ 34.918467][ T6318] poison_slab_object+0x128/0x180 [ 34.919804][ T6318] __kasan_slab_free+0x3c/0x70 [ 34.921031][ T6318] kmem_cache_free+0x170/0x4d0 [ 34.922327][ T6318] kfree_skbmem+0x15c/0x1ec [ 34.923525][ T6318] kfree_skb_reason+0x1c0/0x490 [ 34.924842][ T6318] hci_req_sync_complete+0xb0/0x248 [ 34.926264][ T6318] hci_event_packet+0xab8/0x105c [ 34.927563][ T6318] hci_rx_work+0x318/0xa78 [ 34.928759][ T6318] process_one_work+0x79c/0x15b8 [ 34.930051][ T6318] worker_thread+0x938/0xef4 [ 34.931283][ T6318] kthread+0x288/0x310 [ 34.932329][ T6318] ret_from_fork+0x10/0x20 [ 34.933498][ T6318] [ 34.934073][ T6318] The buggy address belongs to the object at ffff0000ecd7adc0 1970/01/01 00:00:34 SYZFATAL: failed to recv *flatrpc.HostMessageRaw: EOF [ 34.934073][ T6318] which belongs to the cache skbuff_head_cache of size 240 [ 34.937957][ T6318] The buggy address is located 126 bytes inside of [ 34.937957][ T6318] freed 240-byte region [ffff0000ecd7adc0, ffff0000ecd7aeb0) [ 34.941643][ T6318] [ 34.942243][ T6318] The buggy address belongs to the physical page: [ 34.943929][ T6318] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12cd7a [ 34.946295][ T6318] flags: 0x5ffc00000000000(node=0|zone=2|lastcpupid=0x7ff) [ 34.948199][ T6318] page_type: 0xffffefff(slab) [ 34.949398][ T6318] raw: 05ffc00000000000 ffff0000c1bcc780 dead000000000122 0000000000000000 [ 34.951690][ T6318] raw: 0000000000000000 00000000000c000c 00000001ffffefff 0000000000000000 [ 34.953990][ T6318] page dumped because: kasan: bad access detected [ 34.954918][ T6325] Bluetooth: hci2: unexpected cc 0x0c23 length: 249 > 4 [ 34.955618][ T6318] [ 34.955625][ T6318] Memory state around the buggy address: [ 34.957824][ T6325] Bluetooth: hci2: unexpected cc 0x0c25 length: 249 > 3 [ 34.958075][ T6318] ffff0000ecd7ad00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc [ 34.959750][ T6325] Bluetooth: hci2: unexpected cc 0x0c38 length: 249 > 2 [ 34.961344][ T6318] ffff0000ecd7ad80: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 34.967416][ T6318] >ffff0000ecd7ae00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 34.969594][ T6318] ^ [ 34.971190][ T6318] ffff0000ecd7ae80: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc [ 34.973408][ T6318] ffff0000ecd7af00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 34.975562][ T6318] ================================================================== [ 34.981422][ T6318] Disabling lock debugging due to kernel taint [ 34.989378][ T6325] Bluetooth: hci1: unexpected cc 0x0c23 length: 249 > 4 [ 34.991806][ T5863] Bluetooth: hci1: unexpected cc 0x0c25 length: 249 > 3 [ 34.995390][ T52] Bluetooth: hci1: unexpected cc 0x0c38 length: 249 > 2