Bluetooth: hci2: unknown advertising packet type: 0x6c Bluetooth: hci2: Dropping invalid advertising data Bluetooth: hci2: Dropping invalid advertising data Bluetooth: hci2: unknown advertising packet type: 0x65 ================================================================== BUG: KASAN: slab-out-of-bounds in hci_le_adv_report_evt net/bluetooth/hci_event.c:5394 [inline] BUG: KASAN: slab-out-of-bounds in hci_le_meta_evt+0x3754/0x3f20 net/bluetooth/hci_event.c:5694 Read of size 1 at addr ffff88809f848286 by task kworker/u5:3/8131 CPU: 1 PID: 8131 Comm: kworker/u5:3 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 Workqueue: hci2 hci_rx_work Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 print_address_description.cold+0x54/0x219 mm/kasan/report.c:256 kasan_report_error.cold+0x8a/0x1b9 mm/kasan/report.c:354 kasan_report mm/kasan/report.c:412 [inline] __asan_report_load1_noabort+0x88/0x90 mm/kasan/report.c:430 hci_le_adv_report_evt net/bluetooth/hci_event.c:5394 [inline] hci_le_meta_evt+0x3754/0x3f20 net/bluetooth/hci_event.c:5694 hci_event_packet+0x34ad/0x7e20 net/bluetooth/hci_event.c:5959 hci_rx_work+0x4ad/0xc70 net/bluetooth/hci_core.c:4380 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Allocated by task 11342: __do_kmalloc_node mm/slab.c:3689 [inline] __kmalloc_node_track_caller+0x4c/0x70 mm/slab.c:3703 __kmalloc_reserve net/core/skbuff.c:137 [inline] __alloc_skb+0xae/0x560 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:995 [inline] bt_skb_alloc include/net/bluetooth/bluetooth.h:339 [inline] vhci_get_user drivers/bluetooth/hci_vhci.c:180 [inline] vhci_write+0xbd/0x450 drivers/bluetooth/hci_vhci.c:299 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x51b/0x770 fs/read_write.c:487 vfs_write+0x1f3/0x540 fs/read_write.c:549 ksys_write+0x12b/0x2a0 fs/read_write.c:599 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 10362: __cache_free mm/slab.c:3503 [inline] kfree+0xcc/0x210 mm/slab.c:3822 skb_free_head net/core/skbuff.c:563 [inline] skb_release_data+0x6de/0x920 net/core/skbuff.c:583 skb_release_all net/core/skbuff.c:640 [inline] __kfree_skb net/core/skbuff.c:654 [inline] consume_skb+0x113/0x3d0 net/core/skbuff.c:714 netlink_broadcast_filtered+0x31f/0xbc0 net/netlink/af_netlink.c:1527 netlink_broadcast net/netlink/af_netlink.c:1549 [inline] nlmsg_multicast include/net/netlink.h:591 [inline] nlmsg_notify+0x15e/0x1f0 net/netlink/af_netlink.c:2506 inet6_netconf_notify_devconf+0xfd/0x1d0 net/ipv6/addrconf.c:587 __addrconf_sysctl_register+0x269/0x3d0 net/ipv6/addrconf.c:6614 addrconf_sysctl_register+0x139/0x1d0 net/ipv6/addrconf.c:6651 ipv6_add_dev+0xa8a/0x10b0 net/ipv6/addrconf.c:446 addrconf_notify+0x6a3/0x21f0 net/ipv6/addrconf.c:3447 notifier_call_chain+0xc0/0x230 kernel/notifier.c:93 call_netdevice_notifiers net/core/dev.c:1762 [inline] register_netdevice+0xdd2/0x10f0 net/core/dev.c:8761 register_netdev+0x2d/0x50 net/core/dev.c:8859 ip6_tnl_init_net+0x501/0x800 net/ipv6/ip6_tunnel.c:2264 ops_init+0xb3/0x410 net/core/net_namespace.c:129 setup_net+0x2c2/0x720 net/core/net_namespace.c:316 copy_net_ns+0x1f7/0x340 net/core/net_namespace.c:439 create_new_namespaces+0x3f6/0x7b0 kernel/nsproxy.c:107 copy_namespaces+0x325/0x3c0 kernel/nsproxy.c:165 copy_process.part.0+0x3a59/0x8260 kernel/fork.c:1916 copy_process kernel/fork.c:1710 [inline] _do_fork+0x22f/0xf30 kernel/fork.c:2219 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe The buggy address belongs to the object at ffff88809f848080 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 6 bytes to the right of 512-byte region [ffff88809f848080, ffff88809f848280) The buggy address belongs to the page: page:ffffea00027e1200 count:1 mapcount:0 mapping:ffff88813bff0940 index:0x0 flags: 0xfff00000000100(slab) raw: 00fff00000000100 ffffea00028cdcc8 ffffea0002b7db88 ffff88813bff0940 raw: 0000000000000000 ffff88809f848080 0000000100000006 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88809f848180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88809f848200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88809f848280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88809f848300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88809f848380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== list_del corruption, ffff8880501afa90->next is LIST_POISON1 (dead000000000100) ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:45! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 11317 Comm: syz-executor.4 Tainted: G B 4.19.211-syzkaller #0