linux-kernel - Re: kernel losing printk messages?

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Tue, 26 Feb 2008 22:44:32 +0100
From:	"Szekeres István" <szekeres@....hu>
To:	"Jiri Kosina" <jkosina@...e.cz>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: kernel losing printk messages?

Hi,

>  I don't see this on 2.6.25-rc3. Does this happen only on boot? What if you
>  do
>
>         rmmod usbhid
>         rmmod hid
>         modprobe hid debug=1
>         modprobe usbhid
>
>  on already booted system?

Actually I did it the same way. I have no info about the output on boot.

>  I guess in dmesg the output is also corrupted, right?

Interesting. Even after a dmesg -c -s 1000000 it contains only the end
of the story. This is the beginning of the dmesg output:

rusalka:~% dmesg | head
input.c: Mapping: Consumer.0230 ---> IGNORED
[85080.775297] drivers/hid/hid-input.c: Mapping: Consumer.0231 ---> IGNORED
[85080.775302] drivers/hid/hid-input.c: Mapping: Consumer.0232 ---> IGNORED
[85080.775308] drivers/hid/hid-input.c: Mapping: Consumer.0233 ---> Key.ScrollUp
[85080.775314] drivers/hid/hid-input.c: Mapping: Consumer.0234 --->
Key.ScrollDown

So the first line is corrupted. In the remaining of the output
(total=220 lines) I cannot see the evidence of corruption.

Regards,
Istvan
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/