Re: [syzbot] [usb?] WARNING in dib0700_ctrl_rd/usb_submit_urb

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syzbot

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Jun 21, 2026, 5:57:04 AM (2 days ago) Jun 21
to con...@henrialfonso.com, linux-...@vger.kernel.org, syzkall...@googlegroups.com
Hello,

syzbot tried to test the proposed patch but the build/boot failed:

failed to apply patch:
error: No valid patches in input (allow with "--allow-empty")



Tested on:

commit: 9afe6529 Merge tag 'x86_urgent_for_6.16-rc3' of git://..
git tree: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel config: https://syzkaller.appspot.com/x/.config?x=59da38148f3a3d24
dashboard link: https://syzkaller.appspot.com/bug?extid=0cd0fb4cf3f4722d6663
compiler:
patch: https://syzkaller.appspot.com/x/patch.diff?x=17f49ff2580000

syzbot

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Jun 21, 2026, 9:50:04 AM (2 days ago) Jun 21
to con...@henrialfonso.com, con...@henrialfonso.com, linux-...@vger.kernel.org, syzkall...@googlegroups.com
> #syz test: git:// http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 9afe652958c3

I've failed to parse your command.
Did you perhaps forget to provide the branch name, or added an extra ':'?
Please use one of the two supported formats:
1. #syz test
2. #syz test: repo branch-or-commit-hash
Note the lack of ':' in option 1.

>
>
>
> diff --git a/drivers/media/usb/dvb-usb/dib0700_core.c b/drivers/media/usb/dvb-usb/dib0700_core.c
>
> index 986e552f0a97..000000000000 100644
>
> --- a/drivers/media/usb/dvb-usb/dib0700_core.c
>
> +++ b/drivers/media/usb/dvb-usb/dib0700_core.c
>
> @@ -311,6 +311,11 @@ static int dib0700_i2c_xfer_legacy(struct i2c_adapter *adap,
>
> st->buf[0] = REQUEST_I2C_READ;
>
> st->buf[1] |= 1;
>
>
>
> + if (msg[i + 1].len == 0) {
>
> + result = -EINVAL;
>
> + goto unlock;
>
> + }
>
> +
>
> /* special thing in the current firmware: when length is zero the read-failed */
>
> len = dib0700_ctrl_rd(d, st->buf, msg[i].len + 2,
>
>       st->buf, msg[i + 1].len);
>
>  

syzbot

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Jun 21, 2026, 11:06:05 AM (2 days ago) Jun 21
to con...@henrialfonso.com, linux-...@vger.kernel.org, syzkall...@googlegroups.com
Hello,

syzbot has tested the proposed patch but the reproducer is still triggering an issue:
lost connection to test machine



Tested on:

commit: 9afe6529 Merge tag 'x86_urgent_for_6.16-rc3' of git://..
git tree: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
console output: https://syzkaller.appspot.com/x/log.txt?x=12a541ae580000
kernel config: https://syzkaller.appspot.com/x/.config?x=16e88f1fcdbb965b
dashboard link: https://syzkaller.appspot.com/bug?extid=0cd0fb4cf3f4722d6663
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
patch: https://syzkaller.appspot.com/x/patch.diff?x=1756d7b6580000

syzbot

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Jun 21, 2026, 11:42:06 AM (2 days ago) Jun 21
to con...@henrialfonso.com, linux-...@vger.kernel.org, syzkall...@googlegroups.com
Hello,

syzbot tried to test the proposed patch but the build/boot failed:

failed to apply patch:
<stdin>:9: trailing whitespace.
if (msg[i + 1].len == 0) {
<stdin>:10: trailing whitespace.
result = -EINVAL;
<stdin>:11: trailing whitespace.
goto unlock;
<stdin>:12: trailing whitespace.
}
<stdin>:13: trailing whitespace.

error: drivers/media/usb/dvb-usb/dib0700_core.c : No such file or directory



Tested on:

commit: 57b8e2d6 Merge tag 'for-linus' of git://git.kernel.org..
patch: https://syzkaller.appspot.com/x/patch.diff?x=138ea01c580000

syzbot

unread,
Jun 21, 2026, 12:45:03 PM (2 days ago) Jun 21
to con...@henrialfonso.com, linux-...@vger.kernel.org, syzkall...@googlegroups.com
Hello,

syzbot has tested the proposed patch but the reproducer is still triggering an issue:
lost connection to test machine



Tested on:

commit: 57b8e2d6 Merge tag 'for-linus' of git://git.kernel.org..
git tree: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
console output: https://syzkaller.appspot.com/x/log.txt?x=12d4a7a1580000
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
patch: https://syzkaller.appspot.com/x/patch.diff?x=179d62fe580000

syzbot

unread,
Jun 21, 2026, 1:42:04 PM (2 days ago) Jun 21
to con...@henrialfonso.com, linux-...@vger.kernel.org, syzkall...@googlegroups.com
Hello,

syzbot has tested the proposed patch but the reproducer is still triggering an issue:
lost connection to test machine



Tested on:

commit: 322008f8 Merge tag 'hwlock-v7.2' of git://git.kernel.o..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=164ed7b6580000
kernel config: https://syzkaller.appspot.com/x/.config?x=9555a5ee3faac331
dashboard link: https://syzkaller.appspot.com/bug?extid=0cd0fb4cf3f4722d6663
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
patch: https://syzkaller.appspot.com/x/patch.diff?x=135706ae580000

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