linux-kernel - [syzbot] [bluetooth?] WARNING in hci_conn

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Message-ID: <000000000000c3ff9f061fe4a709@google.com>
Date: Sat, 17 Aug 2024 10:46:27 -0700
From: syzbot <syzbot+a6d9742ac04af8e8a014@...kaller.appspotmail.com>
To: johan.hedberg@...il.com, linux-bluetooth@...r.kernel.org, 
	linux-kernel@...r.kernel.org, luiz.dentz@...il.com, marcel@...tmann.org, 
	syzkaller-bugs@...glegroups.com
Subject: [syzbot] [bluetooth?] WARNING in hci_conn_del (2)

Hello,

syzbot found the following issue on:

HEAD commit:    8867bbd4a056 mm: arm64: Fix the out-of-bounds issue in con..
git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci
console output: https://syzkaller.appspot.com/x/log.txt?x=158d4405980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=1bc88a9f65787e86
dashboard link: https://syzkaller.appspot.com/bug?extid=a6d9742ac04af8e8a014
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: arm64

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/5ef30d34e749/disk-8867bbd4.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/a21c2389ebfb/vmlinux-8867bbd4.xz
kernel image: https://storage.googleapis.com/syzbot-assets/9720b12c3f99/Image-8867bbd4.gz.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+a6d9742ac04af8e8a014@...kaller.appspotmail.com

------------[ cut here ]------------
ida_free called for id=8192 which is not allocated.
WARNING: CPU: 1 PID: 6377 at lib/idr.c:525 ida_free+0x2b8/0x378 lib/idr.c:525
Modules linked in:
CPU: 1 PID: 6377 Comm: kworker/u9:2 Tainted: G        W          6.10.0-rc2-syzkaller-g8867bbd4a056 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Workqueue: hci3 hci_error_reset
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : ida_free+0x2b8/0x378 lib/idr.c:525
lr : ida_free+0x2b8/0x378 lib/idr.c:525
sp : ffff8000a02e7880
x29: ffff8000a02e7930 x28: 1ffff000124706cc x27: 1ffff0001405cf14
x26: dfff800000000000 x25: ffff70001405cf10 x24: ffff0000e735c008
x23: 0000000000000000 x22: 0000000000000000 x21: 0000000000000000
x20: 0000000000002000 x19: ffff8000a02e78a0 x18: 1fffe000367a49de
x17: ffff80008f3bd000 x16: ffff80008033878c x15: 0000000000000001
x14: 1fffe000367a7600 x13: 0000000000000000 x12: 0000000000000003
x11: 0000000000000001 x10: 0000000000000003 x9 : 97b9b82baa63c900
x8 : 97b9b82baa63c900 x7 : ffff8000802aebf8 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000006 x1 : ffff80008b3800a0 x0 : ffff800124a1d000
Call trace:
 ida_free+0x2b8/0x378 lib/idr.c:525
 hci_conn_cleanup net/bluetooth/hci_conn.c:156 [inline]
 hci_conn_del+0x5c4/0xaa0 net/bluetooth/hci_conn.c:1154
 hci_conn_hash_flush+0x184/0x220 net/bluetooth/hci_conn.c:2585
 hci_dev_close_sync+0x76c/0xec0 net/bluetooth/hci_sync.c:5062
 hci_dev_do_close net/bluetooth/hci_core.c:556 [inline]
 hci_error_reset+0x108/0x35c net/bluetooth/hci_core.c:1087
 process_one_work+0x7b0/0x15e8 kernel/workqueue.c:3231
 process_scheduled_works kernel/workqueue.c:3312 [inline]
 worker_thread+0x938/0xef4 kernel/workqueue.c:3393
 kthread+0x288/0x310 kernel/kthread.c:389
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860
irq event stamp: 6510
hardirqs last  enabled at (6509): [<ffff8000802aec98>] raw_spin_rq_unlock_irq kernel/sched/sched.h:1418 [inline]
hardirqs last  enabled at (6509): [<ffff8000802aec98>] finish_lock_switch+0xbc/0x1e4 kernel/sched/core.c:5162
hardirqs last disabled at (6510): [<ffff80008b1fe010>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:470
softirqs last  enabled at (6500): [<ffff8000801ea530>] softirq_handle_end kernel/softirq.c:400 [inline]
softirqs last  enabled at (6500): [<ffff8000801ea530>] handle_softirqs+0xa60/0xc34 kernel/softirq.c:582
softirqs last disabled at (6341): [<ffff800080020de8>] __do_softirq+0x14/0x20 kernel/softirq.c:588
---[ end trace 0000000000000000 ]---
Bluetooth: hci3: Opcode 0x0c03 failed: -110
Bluetooth: hci3: Opcode 0x206c failed: -110
Bluetooth: hci3: Opcode 0x2046 failed: -110


---
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