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Message-ID: <CAMuHMdUQhsikcBzRFAvrCwZwzFK_Coh=fqpSihFP6jEtugCMQw@mail.gmail.com>
Date: Tue, 6 Nov 2018 23:19:14 +0100
From: Geert Uytterhoeven <geert@...ux-m68k.org>
To: Boris Brezillon <boris.brezillon@...tlin.com>
Cc: Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>,
David Woodhouse <dwmw2@...radead.org>,
Brian Norris <computersforpeace@...il.com>,
Marek Vasut <marek.vasut@...il.com>,
Richard Weinberger <richard@....at>,
Linus Walleij <linus.walleij@...aro.org>,
MTD Maling List <linux-mtd@...ts.infradead.org>,
Linux MIPS Mailing List <linux-mips@...ux-mips.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH next] mtd: maps: physmap: Fix infinite loop crash in ROM
type probing
Hi Boris,
On Tue, Nov 6, 2018 at 10:58 PM Boris Brezillon
<boris.brezillon@...tlin.com> wrote:
> On Tue, 6 Nov 2018 22:44:16 +0100
> Geert Uytterhoeven <geert@...ux-m68k.org> wrote:
> > On Toshiba RBTX4927, where map_probe is supposed to fail:
> >
> > Creating 2 MTD partitions on "physmap-flash.0":
> > 0x000000c00000-0x000001000000 : "boot"
> > 0x000000000000-0x000000c00000 : "user"
> > physmap-flash physmap-flash.1: physmap platform flash device: [mem 0x1e000000-0x1effffff]
> > CPU 0 Unable to handle kernel paging request at virtual address 00000000, epc == 80320f40, ra == 80321004
> > ...
> > Call Trace:
> > [<80320f40>] get_mtd_chip_driver+0x30/0x8c
> > [<80321004>] do_map_probe+0x20/0x90
> > [<80328448>] physmap_flash_probe+0x484/0x4ec
> >
> > The access to rom_probe_types[] was changed from a sentinel-based loop
> > to an infinite loop, causing a crash when reaching the sentinel.
>
> Oops. Do you mind if I fix that in-place (squash your changes in
> Ricardo's original commit)?
No problem. Thanks!
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
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