Bluetooth: hci3: unexpected cc 0x0c38 length: 249 > 2 Bluetooth: hci3: HCI_REQ-0x0c1a Bluetooth: hci3: command 0x0409 tx timeout Bluetooth: hci3: command 0x041b tx timeout ================================================================== BUG: KASAN: use-after-free in __lock_acquire+0x42c9/0x5e70 Read of size 8 at addr ffff88800db8a018 by task kmemleak/55 CPU: 1 PID: 55 Comm: kmemleak Not tainted 6.0.0-rc7-next-20220929 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 Call Trace: dump_stack_lvl+0x8b/0xb3 print_report+0x172/0x475 kasan_report+0xbb/0x1c0 __lock_acquire+0x42c9/0x5e70 lock_acquire+0x1a2/0x530 _raw_spin_lock_irq+0x32/0x50 kmemleak_scan+0x21d/0x16d0 kmemleak_scan_thread+0x8f/0xb1 kthread+0x2ed/0x3a0 ret_from_fork+0x22/0x30 Allocated by task 181: kasan_save_stack+0x1e/0x40 kasan_set_track+0x21/0x30 __kasan_slab_alloc+0x58/0x70 kmem_cache_alloc+0x1a9/0x3e0 __create_object+0x3d/0xc10 kmemleak_alloc_percpu+0xa1/0x140 pcpu_alloc+0x7f4/0x10a0 __percpu_counter_init+0x10d/0x2e0 fprop_local_init_percpu+0x22/0xb0 wb_get_create+0x29c/0x1180 __inode_attach_wb+0x2e6/0x880 __mark_inode_dirty+0x9b2/0xf00 touch_atime+0x644/0x700 filemap_read+0x999/0xb60 generic_file_read_iter+0x3cd/0x530 ext4_file_read_iter+0x182/0x490 __kernel_read+0x2cb/0x7d0 kernel_read+0xbf/0x1c0 bprm_execve+0x70e/0x1920 do_execveat_common+0x72c/0x890 __x64_sys_execve+0x8f/0xc0 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd Freed by task 13: kasan_save_stack+0x1e/0x40 kasan_set_track+0x21/0x30 kasan_save_free_info+0x2a/0x50 __kasan_slab_free+0x106/0x190 kmem_cache_free+0xf7/0x610 rcu_core+0x7e2/0x2080 __do_softirq+0x1c3/0x8f5 Last potentially related work creation: kasan_save_stack+0x1e/0x40 __kasan_record_aux_stack+0x95/0xb0 call_rcu+0x6a/0xa30 kmemleak_free_percpu+0x9a/0x120 free_percpu+0x2c/0xec0 percpu_counter_destroy+0x11a/0x1c0 cgwb_release_workfn+0x18b/0x3f0 process_one_work+0xa17/0x16a0 worker_thread+0x637/0x1260 kthread+0x2ed/0x3a0 ret_from_fork+0x22/0x30 The buggy address belongs to the object at ffff88800db8a000 which belongs to the cache kmemleak_object of size 368 The buggy address is located 24 bytes inside of 368-byte region [ffff88800db8a000, ffff88800db8a170) The buggy address belongs to the physical page: page:0000000094a83aac refcount:1 mapcount:0 mapping:0000000000000000 index:0xffffea00003a5e80 pfn:0xdb8a head:0000000094a83aac order:1 compound_mapcount:0 compound_pincount:0 flags: 0x100000000010200(slab|head|node=0|zone=1) raw: 0100000000010200 ffff888007c4f780 dead000000120012 0000000000000000 raw: ffffea00003a5e80 dead000000000004 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88800db89f00: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc ffff88800db89f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88800db8a000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88800db8a080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88800db8a100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc ==================================================================