batman_adv: batadv0: Interface activated: batadv_slave_1 IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready Bluetooth: hci0: Dropping invalid advertising data ================================================================== BUG: KASAN: slab-out-of-bounds in hci_le_adv_report_evt net/bluetooth/hci_event.c:5325 [inline] BUG: KASAN: slab-out-of-bounds in hci_le_meta_evt+0x33b1/0x39c0 net/bluetooth/hci_event.c:5625 Read of size 1 at addr ffff8880a8093c84 by task kworker/u5:2/6671 CPU: 1 PID: 6671 Comm: kworker/u5:2 Not tainted 4.19.136-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: hci0 hci_rx_work Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2fe lib/dump_stack.c:118 print_address_description.cold+0x54/0x219 mm/kasan/report.c:256 kasan_report_error.cold+0x8a/0x1c7 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:5325 [inline] hci_le_meta_evt+0x33b1/0x39c0 net/bluetooth/hci_event.c:5625 hci_event_packet+0x1a29/0x858f net/bluetooth/hci_event.c:5885 hci_rx_work+0x46b/0xa90 net/bluetooth/hci_core.c:4359 process_one_work+0x864/0x1570 kernel/workqueue.c:2155 worker_thread+0x64c/0x1130 kernel/workqueue.c:2298 kthread+0x30b/0x410 kernel/kthread.c:246 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Allocated by task 6442: __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 4632: __cache_free mm/slab.c:3503 [inline] kfree+0xcc/0x210 mm/slab.c:3822 put_pipe_info fs/pipe.c:570 [inline] pipe_release+0x2e3/0x340 fs/pipe.c:591 __fput+0x2ce/0x890 fs/file_table.c:278 task_work_run+0x148/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe The buggy address belongs to the object at ffff8880a8093a80 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 4 bytes to the right of 512-byte region [ffff8880a8093a80, ffff8880a8093c80) The buggy address belongs to the page: page:ffffea0002a024c0 count:1 mapcount:0 mapping:ffff88812c39c940 index:0x0 flags: 0xfffe0000000100(slab) raw: 00fffe0000000100 ffffea0002954f88 ffff88812c394748 ffff88812c39c940 raw: 0000000000000000 ffff8880a8093080 0000000100000006 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8880a8093b80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8880a8093c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff8880a8093c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff8880a8093d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880a8093d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================