Bluetooth: hci0: Unknown advertising packet type: 0xc015 ================================================================== BUG: KASAN: slab-out-of-bounds in hci_le_ext_adv_report_evt net/bluetooth/hci_event.c:5945 [inline] BUG: KASAN: slab-out-of-bounds in hci_le_meta_evt+0x12db/0x3b80 net/bluetooth/hci_event.c:6218 Read of size 1 at addr ffff888022b0b205 by task kworker/u5:5/4198 CPU: 1 PID: 4198 Comm: kworker/u5:5 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 Workqueue: hci0 hci_rx_work Call Trace: dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106 print_address_description+0x60/0x2d0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0xdf/0x130 mm/kasan/report.c:451 hci_le_ext_adv_report_evt net/bluetooth/hci_event.c:5945 [inline] hci_le_meta_evt+0x12db/0x3b80 net/bluetooth/hci_event.c:6218 hci_event_packet+0xe05/0x12f0 net/bluetooth/hci_event.c:6535 hci_rx_work+0x255/0xa10 net/bluetooth/hci_core.c:5160 process_one_work+0x863/0x1000 kernel/workqueue.c:2310 worker_thread+0xaa8/0x12a0 kernel/workqueue.c:2457 kthread+0x436/0x520 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Allocated by task 5832: 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 mm/kasan/common.c:513 [inline] __kasan_kmalloc+0xb5/0xf0 mm/kasan/common.c:522 kmalloc_reserve net/core/skbuff.c:356 [inline] __alloc_skb+0x22c/0x750 net/core/skbuff.c:427 alloc_skb include/linux/skbuff.h:1162 [inline] bt_skb_alloc include/net/bluetooth/bluetooth.h:392 [inline] vhci_get_user drivers/bluetooth/hci_vhci.c:170 [inline] vhci_write+0xbc/0x450 drivers/bluetooth/hci_vhci.c:290 call_write_iter include/linux/fs.h:2173 [inline] new_sync_write fs/read_write.c:507 [inline] vfs_write+0x712/0xd00 fs/read_write.c:594 ksys_write+0x14d/0x250 fs/read_write.c:647 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 Last potentially related work creation: kasan_save_stack+0x35/0x60 mm/kasan/common.c:38 kasan_record_aux_stack+0xb8/0x100 mm/kasan/generic.c:348 __call_rcu kernel/rcu/tree.c:3011 [inline] call_rcu+0x182/0x930 kernel/rcu/tree.c:3091 percpu_ref_put_many include/linux/percpu-refcount.h:322 [inline] percpu_ref_put+0x1f6/0x200 include/linux/percpu-refcount.h:338 rcu_do_batch kernel/rcu/tree.c:2523 [inline] rcu_core+0x962/0x15d0 kernel/rcu/tree.c:2763 handle_softirqs+0x328/0x820 kernel/softirq.c:576 run_ksoftirqd+0x98/0xf0 kernel/softirq.c:943 smpboot_thread_fn+0x4f6/0x970 kernel/smpboot.c:164 kthread+0x436/0x520 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 The buggy address belongs to the object at ffff888022b0b000 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 5 bytes to the right of 512-byte region [ffff888022b0b000, ffff888022b0b200) The buggy address belongs to the page: page:ffffea00008ac200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x22b08 head:ffffea00008ac200 order:2 compound_mapcount:0 compound_pincount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffffea0001e25400 0000000200000002 ffff888016841c80 raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 9, ts 8473125021, free_ts 0 prep_new_page mm/page_alloc.c:2426 [inline] get_page_from_freelist+0x1b77/0x1c60 mm/page_alloc.c:4192 __alloc_pages+0x1e1/0x470 mm/page_alloc.c:5487 alloc_slab_page mm/slub.c:1780 [inline] allocate_slab mm/slub.c:1917 [inline] new_slab+0xc0/0x4b0 mm/slub.c:1980 ___slab_alloc+0x81e/0xdf0 mm/slub.c:3013 __slab_alloc mm/slub.c:3100 [inline] slab_alloc_node mm/slub.c:3191 [inline] kmem_cache_alloc_node_trace+0x1dd/0x300 mm/slub.c:3275 kmalloc_node include/linux/slab.h:625 [inline] kzalloc_node include/linux/slab.h:749 [inline] blkg_alloc+0xad/0x660 block/blk-cgroup.c:158 blkcg_init_queue+0x26/0x430 block/blk-cgroup.c:1198 blk_alloc_queue+0x439/0x5a0 block/blk-core.c:582 blk_mq_init_queue_data block/blk-mq.c:3150 [inline] blk_mq_init_queue+0x33/0xd0 block/blk-mq.c:3164 scsi_alloc_sdev+0x6f2/0xab0 drivers/scsi/scsi_scan.c:319 scsi_probe_and_add_lun+0x1bf/0x3d00 drivers/scsi/scsi_scan.c:1157 __scsi_scan_target+0x1d8/0x1010 drivers/scsi/scsi_scan.c:1638 scsi_scan_channel drivers/scsi/scsi_scan.c:1726 [inline] scsi_scan_host_selected+0x36e/0x690 drivers/scsi/scsi_scan.c:1755 do_scsi_scan_host drivers/scsi/scsi_scan.c:1894 [inline] do_scan_async+0x11a/0x700 drivers/scsi/scsi_scan.c:1904 async_run_entry_fn+0x9f/0x3e0 kernel/async.c:127 process_one_work+0x863/0x1000 kernel/workqueue.c:2310 page_owner free stack trace missing Memory state around the buggy address: ffff888022b0b100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888022b0b180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888022b0b200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff888022b0b280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888022b0b300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================