syzbot


BUG: corrupted list in hci_cmd_sync_dequeue_once

Status: moderation: reported on 2024/06/24 15:27
Subsystems: bluetooth
[Documentation on labels]
Reported-by: syzbot+2802aae0c648c0035383@syzkaller.appspotmail.com
First crash: 19d, last: 19d

Sample crash report:
list_del corruption, ffff88805d970d80->next is LIST_POISON1 (dead000000000100)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:58!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 1 PID: 11029 Comm: kworker/u9:0 Not tainted 6.10.0-rc4-syzkaller-00330-g7c16f0a4ed1c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Workqueue: hci0 hci_conn_timeout
RIP: 0010:__list_del_entry_valid_or_report+0xf4/0x140 lib/list_debug.c:56
Code: e8 a1 4f cc 06 90 0f 0b 48 c7 c7 40 1b 1f 8c 4c 89 fe e8 8f 4f cc 06 90 0f 0b 48 c7 c7 a0 1b 1f 8c 4c 89 fe e8 7d 4f cc 06 90 <0f> 0b 48 c7 c7 00 1c 1f 8c 4c 89 fe e8 6b 4f cc 06 90 0f 0b 48 c7
RSP: 0018:ffffc9000cecfad0 EFLAGS: 00010246
RAX: 000000000000004e RBX: dead000000000122 RCX: 455f76d156aa8f00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffff88805d970da0 R08: ffffffff817690bc R09: fffffbfff1c39994
R10: dffffc0000000000 R11: fffffbfff1c39994 R12: dffffc0000000000
R13: ffff88805d970d80 R14: dead000000000100 R15: ffff88805d970d80
FS:  0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2e738000 CR3: 000000007cd12000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __list_del_entry_valid include/linux/list.h:124 [inline]
 __list_del_entry include/linux/list.h:215 [inline]
 list_del include/linux/list.h:229 [inline]
 _hci_cmd_sync_cancel_entry net/bluetooth/hci_sync.c:580 [inline]
 hci_cmd_sync_cancel_entry net/bluetooth/hci_sync.c:746 [inline]
 hci_cmd_sync_dequeue_once+0x262/0x360 net/bluetooth/hci_sync.c:765
 hci_cancel_connect_sync+0xc3/0x120
 hci_abort_conn+0x194/0x330 net/bluetooth/hci_conn.c:2943
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd70 kernel/workqueue.c:3393
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_del_entry_valid_or_report+0xf4/0x140 lib/list_debug.c:56
Code: e8 a1 4f cc 06 90 0f 0b 48 c7 c7 40 1b 1f 8c 4c 89 fe e8 8f 4f cc 06 90 0f 0b 48 c7 c7 a0 1b 1f 8c 4c 89 fe e8 7d 4f cc 06 90 <0f> 0b 48 c7 c7 00 1c 1f 8c 4c 89 fe e8 6b 4f cc 06 90 0f 0b 48 c7
RSP: 0018:ffffc9000cecfad0 EFLAGS: 00010246
RAX: 000000000000004e RBX: dead000000000122 RCX: 455f76d156aa8f00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffff88805d970da0 R08: ffffffff817690bc R09: fffffbfff1c39994
R10: dffffc0000000000 R11: fffffbfff1c39994 R12: dffffc0000000000
R13: ffff88805d970d80 R14: dead000000000100 R15: ffff88805d970d80
FS:  0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555710da750 CR3: 0000000030174000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/06/24 05:08 upstream 7c16f0a4ed1c edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root BUG: corrupted list in hci_cmd_sync_dequeue_once
* Struck through repros no longer work on HEAD.