Bluetooth: hci0: Unknown advertising packet type: 0x35 ================================================================== BUG: KASAN: slab-out-of-bounds in hci_le_ext_adv_report_evt net/bluetooth/hci_event.c:5896 [inline] BUG: KASAN: slab-out-of-bounds in hci_le_meta_evt+0x11ed/0x3b90 net/bluetooth/hci_event.c:6165 Read of size 1 at addr ffff888074a71c06 by task kworker/u5:1/3500 CPU: 1 PID: 3500 Comm: kworker/u5:1 Not tainted 5.15.120-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 Workqueue: hci0 hci_rx_work Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 print_address_description+0x63/0x3b0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0x16b/0x1c0 mm/kasan/report.c:451 hci_le_ext_adv_report_evt net/bluetooth/hci_event.c:5896 [inline] hci_le_meta_evt+0x11ed/0x3b90 net/bluetooth/hci_event.c:6165 hci_event_packet+0xc28/0x1480 net/bluetooth/hci_event.c:6482 hci_rx_work+0x240/0x7d0 net/bluetooth/hci_core.c:5153 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2307 worker_thread+0xaca/0x1280 kernel/workqueue.c:2454 kthread+0x3f6/0x4f0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 Allocated by task 3498: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] ____kasan_kmalloc+0xba/0xf0 mm/kasan/common.c:513 kasan_kmalloc include/linux/kasan.h:264 [inline] __kmalloc_node_track_caller+0x195/0x390 mm/slub.c:4963 kmalloc_reserve net/core/skbuff.c:356 [inline] __alloc_skb+0x12c/0x590 net/core/skbuff.c:427 alloc_skb include/linux/skbuff.h:1167 [inline] bt_skb_alloc include/net/bluetooth/bluetooth.h:391 [inline] vhci_get_user drivers/bluetooth/hci_vhci.c:167 [inline] vhci_write+0xbc/0x430 drivers/bluetooth/hci_vhci.c:287 call_write_iter include/linux/fs.h:2103 [inline] new_sync_write fs/read_write.c:507 [inline] vfs_write+0xacf/0xe50 fs/read_write.c:594 ksys_write+0x1a2/0x2c0 fs/read_write.c:647 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb The buggy address belongs to the object at ffff888074a71800 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 6 bytes to the right of 1024-byte region [ffff888074a71800, ffff888074a71c00) The buggy address belongs to the page: page:ffffea0001d29c00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x74a70 head:ffffea0001d29c00 order:3 compound_mapcount:0 compound_pincount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 0000000000000000 dead000000000122 ffff888011c41dc0 raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 3498, ts 55090662219, free_ts 49156968547 prep_new_page mm/page_alloc.c:2426 [inline] get_page_from_freelist+0x322a/0x33c0 mm/page_alloc.c:4159 __alloc_pages+0x272/0x700 mm/page_alloc.c:5421 alloc_slab_page mm/slub.c:1775 [inline] allocate_slab mm/slub.c:1912 [inline] new_slab+0xbb/0x4b0 mm/slub.c:1975 ___slab_alloc+0x6f6/0xe10 mm/slub.c:3008 __slab_alloc mm/slub.c:3095 [inline] slab_alloc_node mm/slub.c:3186 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc_trace+0x1a0/0x290 mm/slub.c:3245 kmalloc include/linux/slab.h:591 [inline] kzalloc include/linux/slab.h:721 [inline] rxrpc_alloc_connection+0x72/0x420 net/rxrpc/conn_object.c:41 rxrpc_prealloc_service_connection+0x1f/0x5a0 net/rxrpc/conn_service.c:128 rxrpc_service_prealloc_one+0x2c5/0xf50 net/rxrpc/call_accept.c:86 rxrpc_kernel_charge_accept+0xce/0x100 net/rxrpc/call_accept.c:487 afs_charge_preallocation+0xb6/0x2b0 fs/afs/rxrpc.c:730 afs_open_socket+0x455/0x600 fs/afs/rxrpc.c:92 afs_net_init+0x7b5/0x990 fs/afs/main.c:126 ops_init+0x356/0x600 net/core/net_namespace.c:135 setup_net+0x358/0x9e0 net/core/net_namespace.c:329 copy_net_ns+0x395/0x5d0 net/core/net_namespace.c:473 create_new_namespaces+0x425/0x7a0 kernel/nsproxy.c:110 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1340 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0xc34/0xcf0 mm/page_alloc.c:3317 free_unref_page+0x95/0x2d0 mm/page_alloc.c:3396 put_page include/linux/mm.h:1247 [inline] __skb_frag_unref include/linux/skbuff.h:3219 [inline] skb_release_data+0x411/0x8a0 net/core/skbuff.c:672 skb_release_all net/core/skbuff.c:742 [inline] __kfree_skb+0x4c/0x60 net/core/skbuff.c:756 sk_eat_skb include/net/sock.h:2696 [inline] tcp_recvmsg_locked+0x1629/0x29b0 net/ipv4/tcp.c:2512 tcp_recvmsg+0x24e/0x7f0 net/ipv4/tcp.c:2558 inet_recvmsg+0x157/0x280 net/ipv4/af_inet.c:856 sock_recvmsg_nosec net/socket.c:947 [inline] sock_recvmsg net/socket.c:965 [inline] sock_read_iter+0x353/0x480 net/socket.c:1038 call_read_iter include/linux/fs.h:2097 [inline] new_sync_read fs/read_write.c:404 [inline] vfs_read+0xa9f/0xe10 fs/read_write.c:485 ksys_read+0x1a2/0x2c0 fs/read_write.c:623 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb Memory state around the buggy address: ffff888074a71b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888074a71b80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888074a71c00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff888074a71c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888074a71d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================