list_del corruption. next->prev should be ffff888090d6d638, but was ffff8880a4bf4878
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:54!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 30871 Comm: syz-executor.5 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
RIP: 0010:__list_del_entry_valid.cold+0x48/0x4a lib/list_debug.c:54
Code: e8 ec 42 f7 ff 0f 0b 4c 89 e2 48 89 ee 48 c7 c7 e0 e3 b3 88 e8 d8 42 f7 ff 0f 0b 48 89 ee 48 c7 c7 a0 e4 b3 88 e8 c7 42 f7 ff <0f> 0b 41 83 c7 01 b8 ff ff 37 00 44 89 3d 5a 85 3a 05 48 c1 e0 2a
RSP: 0018:ffff8880b1637718 EFLAGS: 00010282
RAX: 0000000000000054 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed10162c6ed5
RBP: ffff888090d6d638 R08: 0000000000000054 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880af83f5b8
R13: ffff8880a4a9a7f8 R14: ffffed10121adaca R15: ffff88823a5220d8
FS:  00007f30ecba8700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f30ee72efb8 CR3: 00000000ab21f000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __list_del_entry include/linux/list.h:117 [inline]
 list_del include/linux/list.h:125 [inline]
 klist_release lib/klist.c:190 [inline]
 kref_put include/linux/kref.h:70 [inline]
 klist_dec_and_del+0x97/0x480 lib/klist.c:207
 klist_put+0x7a/0x150 lib/klist.c:218
 device_del+0x370/0xaf0 drivers/base/core.c:2337
 hci_conn_del_sysfs+0xdc/0x180 net/bluetooth/hci_sysfs.c:78
 hci_conn_cleanup+0x24b/0x550 net/bluetooth/hci_conn.c:128
 hci_conn_del+0x2a0/0x780 net/bluetooth/hci_conn.c:611
 hci_conn_hash_flush+0x19c/0x260 net/bluetooth/hci_conn.c:1513
 hci_dev_do_close+0x6bc/0x1020 net/bluetooth/hci_core.c:1687
 hci_unregister_dev+0x14f/0x460 net/bluetooth/hci_core.c:3288
 vhci_release+0x70/0xe0 drivers/bluetooth/hci_vhci.c:354
 __fput+0x2ce/0x890 fs/file_table.c:278
 task_work_run+0x148/0x1c0 kernel/task_work.c:113
 exit_task_work include/linux/task_work.h:22 [inline]
 do_exit+0xbf3/0x2be0 kernel/exit.c:870
 do_group_exit+0x125/0x310 kernel/exit.c:967
 get_signal+0x3f2/0x1f70 kernel/signal.c:2589
 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799
 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163
 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
RIP: 0033:0x7f30ee65a2d1
Code: Bad RIP value.
RSP: 002b:00007f30ecba80b0 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 00007f30ee755f80 RCX: 00007f30ee65a2d1
RDX: 00007f30ecba80f0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f30ee6907b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 00007ffdde882bbf R14: 00007f30ecba8300 R15: 0000000000022000
Modules linked in:
---[ end trace 9c8c583356976ddc ]---
RIP: 0010:__list_del_entry_valid.cold+0x48/0x4a lib/list_debug.c:54
Code: e8 ec 42 f7 ff 0f 0b 4c 89 e2 48 89 ee 48 c7 c7 e0 e3 b3 88 e8 d8 42 f7 ff 0f 0b 48 89 ee 48 c7 c7 a0 e4 b3 88 e8 c7 42 f7 ff <0f> 0b 41 83 c7 01 b8 ff ff 37 00 44 89 3d 5a 85 3a 05 48 c1 e0 2a
RSP: 0018:ffff8880b1637718 EFLAGS: 00010282
RAX: 0000000000000054 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed10162c6ed5
RBP: ffff888090d6d638 R08: 0000000000000054 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880af83f5b8
R13: ffff8880a4a9a7f8 R14: ffffed10121adaca R15: ffff88823a5220d8
FS:  00007f30ecba8700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f30ee65a2a7 CR3: 0000000009e6d000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400