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Date:   Tue, 25 Jan 2022 16:32:25 +0200
From:   Heikki Krogerus <heikki.krogerus@linux.intel.com>
To:     Mike Lothian <mike@fireburn.co.uk>
Cc:     andriy.shevchenko@linux.intel.com, gregkh@linuxfoundation.org,
        linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-usb@vger.kernel.org, pmalani@chromium.org, rafael@kernel.org,
        sakari.ailus@linux.intel.com
Subject: Re: 'Re: [PATCH v5 4/5] usb: typec: port-mapper: Convert to the
 component framework'
Message-ID: <YfAJ+b0G6Yvzhpxp@kuha.fi.intel.com>
References: <20211223082422.45637-1-heikki.krogerus@linux.intel.com>
 <20220125140033.1403-1-mike@fireburn.co.uk>
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In-Reply-To: <20220125140033.1403-1-mike@fireburn.co.uk>
Precedence: bulk

On Tue, Jan 25, 2022 at 02:00:33PM +0000, Mike Lothian wrote:
> Hi
> 
> This patch is stopping my ASUS G513QY from booting correctly
> 
> BUG: kernel NULL pointer dereference, address: 0000000000000008
> #PF: supervisor read access in kernel mode
> #PF: error_code(0x0000) - not-present page
> PGD 0 P4D 0 
> Oops: 0000 [#1] PREEMPT SMP NOPTI
> CPU: 1 PID: 116 Comm: kworker/1:1 Not tainted 5.16.0-rc6-tip+ #2991
> Hardware name: ASUSTeK COMPUTER INC. ROG Strix G513QY_G513QY/G513QY, BIOS G513QY.316 11/29/2021
> Workqueue: events_long ucsi_init_work
> RIP: 0010:component_master_add_with_match+0x11/0x190
> Code: cc cc 00 00 cc cc 00 00 cc 49 89 c9 49 89 d0 31 d2 31 c9 e9 c1 fe ff ff 00 55 41 57 41 56 41 54 53 48 89 d3 49 89 f4 49 89 ff <48> 8b 72 08 48 89 d7 e8 73 01 00 00 89 c5 85 c0 0f 85 55 01 00 00
> RSP: 0018:ffff8881029f7d48 EFLAGS: 00010282
> RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
> RDX: 0000000000000000 RSI: ffffffff83095658 RDI: ffff888117658c08
> RBP: 0000000000000000 R08: ffff88810158e258 R09: ffffea00045d9e00
> R10: 0000001000000000 R11: ffffffff81be3720 R12: ffffffff83095658
> R13: ffff888117630a68 R14: ffff888117658c08 R15: ffff888117658c08
> FS:  0000000000000000(0000) GS:ffff888fde440000(0000) knlGS:0000000000000000
> CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 0000000000000008 CR3: 00000000ac20c000 CR4: 0000000000150ee0
> Call Trace:
>  <TASK>
>  ? typec_link_ports+0x45/0x50
>  ? typec_register_port+0x20f/0x260
>  ? ucsi_register_port+0x33c/0x700
>  ? __kmalloc+0x14e/0x2a0
>  ? ucsi_init_work+0x15a/0x330
>  ? process_one_work+0x1dd/0x380
>  ? worker_thread+0x26d/0x4a0
>  ? kthread+0x182/0x1a0
>  ? worker_clr_flags+0x40/0x40
>  ? kthread_blkcg+0x30/0x30
>  ? ret_from_fork+0x22/0x30
>  </TASK>
> Modules linked in:
> CR2: 0000000000000008
> ---[ end trace 9c7dfbb7c9eaa418 ]---
> RIP: 0010:component_master_add_with_match+0x11/0x190
> Code: cc cc 00 00 cc cc 00 00 cc 49 89 c9 49 89 d0 31 d2 31 c9 e9 c1 fe ff ff 00 55 41 57 41 56 41 54 53 48 89 d3 49 89 f4 49 89 ff <48> 8b 72 08 48 89 d7 e8 73 01 00 00 89 c5 85 c0 0f 85 55 01 00 00
> RSP: 0018:ffff8881029f7d48 EFLAGS: 00010282
> RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
> RDX: 0000000000000000 RSI: ffffffff83095658 RDI: ffff888117658c08
> RBP: 0000000000000000 R08: ffff88810158e258 R09: ffffea00045d9e00
> R10: 0000001000000000 R11: ffffffff81be3720 R12: ffffffff83095658
> R13: ffff888117630a68 R14: ffff888117658c08 R15: ffff888117658c08
> FS:  0000000000000000(0000) GS:ffff888fde440000(0000) knlGS:0000000000000000
> CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 0000000000000008 CR3: 00000000ac20c000 CR4: 0000000000150ee0
> 
> Is it due to the USB-C port on the Radeon 6800M?

No. There is a fix pending:
https://lore.kernel.org/linux-usb/20220124090228.41396-3-heikki.krogerus@linux.intel.com/

-- 
heikki