Re: [PATCH] Bluetooth: L2CAP: Fix null-ptr-deref on l2cap_sock_ready_cb

[patchwork-bot+bluetooth]

Hello:

This patch was applied to bluetooth/bluetooth-next.git (master)
by Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>:

On Thu, 19 Mar 2026 08:58:01 -0300 you wrote:
> Before using sk pointer, check if it is null.
> 
> Fix the following:
> 
>  KASAN: null-ptr-deref in range [0x0000000000000260-0x0000000000000267]
>  CPU: 0 UID: 0 PID: 5985 Comm: kworker/0:5 Not tainted 7.0.0-rc4-00029-ga989fde763f4 #1 PREEMPT(full)
>  Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.17.0-9.fc43 06/10/2025
>  Workqueue: events l2cap_info_timeout
>  RIP: 0010:kasan_byte_accessible+0x12/0x30
>  Code: 79 ff ff ff 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 07 3c 08 0f 92 c0 c3 cc cce
>  veth0_macvtap: entered promiscuous mode
>  RSP: 0018:ffffc90006e0f808 EFLAGS: 00010202
>  RAX: dffffc0000000000 RBX: ffffffff89746018 RCX: 0000000080000001
>  RDX: 0000000000000000 RSI: ffffffff89746018 RDI: 000000000000004c
>  RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
>  R10: dffffc0000000000 R11: ffffffff8aae3e70 R12: 0000000000000000
>  R13: 0000000000000260 R14: 0000000000000260 R15: 0000000000000001
>  FS:  0000000000000000(0000) GS:ffff8880983c2000(0000) knlGS:0000000000000000
>  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>  CR2: 00005582615a5008 CR3: 000000007007e000 CR4: 0000000000752ef0
>  PKRU: 55555554
>  Call Trace:
>   <TASK>
>   __kasan_check_byte+0x12/0x40
>   lock_acquire+0x79/0x2e0
>   lock_sock_nested+0x48/0x100
>   ? l2cap_sock_ready_cb+0x46/0x160
>   l2cap_sock_ready_cb+0x46/0x160
>   l2cap_conn_start+0x779/0xff0
>   ? __pfx_l2cap_conn_start+0x10/0x10
>   ? l2cap_info_timeout+0x60/0xa0
>   ? __pfx___mutex_lock+0x10/0x10
>   l2cap_info_timeout+0x68/0xa0
>   ? process_scheduled_works+0xa8d/0x18c0
>   process_scheduled_works+0xb6e/0x18c0
>   ? __pfx_process_scheduled_works+0x10/0x10
>   ? assign_work+0x3d5/0x5e0
>   worker_thread+0xa53/0xfc0
>   kthread+0x388/0x470
>   ? __pfx_worker_thread+0x10/0x10
>   ? __pfx_kthread+0x10/0x10
>   ret_from_fork+0x51e/0xb90
>   ? __pfx_ret_from_fork+0x10/0x10
>  veth1_macvtap: entered promiscuous mode
>   ? __switch_to+0xc7d/0x1450
>   ? __pfx_kthread+0x10/0x10
>   ret_from_fork_asm+0x1a/0x30
>   </TASK>
>  Modules linked in:
> 
> [...]

Here is the summary with links:
  - Bluetooth: L2CAP: Fix null-ptr-deref on l2cap_sock_ready_cb
    https://git.kernel.org/bluetooth/bluetooth-next/c/bc280a5ed9ef

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html