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From: Sean Young <sean@mess.org>
To: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Cc: Alan Stern <stern@rowland.harvard.edu>,
	Hillf Danton <hdanton@sina.com>,
	syzbot+592e2ab8775dbe0bf09a@syzkaller.appspotmail.com,
	LKML <linux-kernel@vger.kernel.org>,
	Mauro Carvalho Chehab <mchehab@kernel.org>
Subject: Re: [PATCH] media: imon: make send_packet() more robust
Date: Wed, 16 Jul 2025 13:47:06 +0100	[thread overview]
Message-ID: <aHefSptAPBoRG_20@gofer.mess.org> (raw)
In-Reply-To: <a44d5568-48d6-44f7-af93-e1b966489a84@I-love.SAKURA.ne.jp>

On Wed, Jul 16, 2025 at 07:09:51PM +0900, Tetsuo Handa wrote:
> On 2025/07/16 18:38, Sean Young wrote:
> > On Tue, Jul 15, 2025 at 09:30:02PM -0400, Alan Stern wrote:
> >> On Tue, Jul 15, 2025 at 09:19:18PM +0100, Sean Young wrote:
> >>> I think that is why this driver code is so awkward.
> >>
> >> That's what usb_driver_claim_interface() is for.  IIRC, the cdc-acm 
> >> driver uses it in exactly this way.
> > 
> > Very interesting, we should look at re-writing this driver. Note this
> > function is not documented in Documentation/driver-api/usb/
> 
> OK. Then, what do you want to do for this syzbot report?
> If you want to apply this patch, I'll send an updated patch with Alan's comment.
> If you want to directly rewrite this module, this patch will be discarded.

Let's apply your updated patch. It looks good. I've started looking at 
re-writing the driver to use usb_driver_claim_interface(), but I don't
know when that will be ready (or if it'll work).

Thanks,

Sean

  parent reply	other threads:[~2025-07-16 12:47 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-11-09 14:37 [syzbot] [usb?] INFO: task hung in uevent_show (2) syzbot
2024-11-10  0:59 ` syzbot
2025-07-10 11:05   ` Hillf Danton
2025-07-10 11:59     ` [syzbot] [kernel?] " syzbot
2025-07-10 12:59   ` [syzbot] [usb?] " Hillf Danton
2025-07-10 13:25     ` [syzbot] [kernel?] " syzbot
2025-07-09  4:39 ` [syzbot] [usb?] " Tetsuo Handa
2025-07-09 14:03   ` [syzbot] [kernel?] " syzbot
2025-07-09 14:13     ` Tetsuo Handa
2025-07-09 14:27       ` Alan Stern
2025-07-09 14:44         ` Tetsuo Handa
2025-07-09 15:19           ` Alan Stern
2025-07-09 15:33             ` Tetsuo Handa
2025-07-09 15:41               ` Alan Stern
2025-07-10 10:17                 ` Tetsuo Handa
2025-07-10 14:13                   ` Alan Stern
2025-07-09 14:15   ` [syzbot] [usb?] " Tetsuo Handa
2025-07-09 14:44     ` [syzbot] [kernel?] " syzbot
2025-07-09 15:01       ` Tetsuo Handa
2025-07-11 11:09     ` [syzbot] [usb?] " Tetsuo Handa
2025-07-11 11:44       ` [syzbot] [kernel?] " syzbot
2025-07-11 11:52       ` [syzbot] [usb?] " Tetsuo Handa
2025-07-11 12:13         ` [syzbot] [kernel?] " syzbot
2025-07-11 13:34         ` [syzbot] [usb?] " Tetsuo Handa
2025-07-11 14:09           ` [syzbot] [kernel?] " syzbot
2025-07-11 15:01           ` [syzbot] [usb?] " Tetsuo Handa
2025-07-11 15:46             ` [syzbot] [kernel?] " syzbot
2025-07-12 14:40             ` [syzbot] [usb?] " Tetsuo Handa
2025-07-12 15:18               ` [syzbot] [kernel?] " syzbot
2025-07-12 15:41               ` [syzbot] [usb?] " Tetsuo Handa
2025-07-12 17:43                 ` [syzbot] [kernel?] " syzbot
2025-07-13  7:50                 ` [PATCH] media: imon: make send_packet() more robust Tetsuo Handa
2025-07-13  8:11                   ` Hillf Danton
2025-07-13 15:21                     ` Alan Stern
2025-07-15 20:19                       ` Sean Young
2025-07-16  1:30                         ` Alan Stern
2025-07-16  9:38                           ` Sean Young
2025-07-16 10:09                             ` Tetsuo Handa
2025-07-16 11:55                               ` Hillf Danton
2025-07-16 12:47                               ` Sean Young [this message]
2025-07-16 14:07                                 ` [PATCH v2] " Tetsuo Handa
2025-07-16 14:45                                   ` Alan Stern
2025-07-17 14:21                                     ` [PATCH v3] " Tetsuo Handa
2025-07-16 14:38                             ` [PATCH] " Alan Stern
2025-07-13  8:29                   ` [syzbot] [kernel?] INFO: task hung in uevent_show (2) syzbot

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