From: Matt Mackall <mpm@selenic.com>
To: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, sparclinux@vger.kernel.org,
davem@davemloft.net
Subject: Re: 2.6.24-rc5-mm1: problems with cat /proc/kpageflags
Date: Sun, 16 Dec 2007 12:27:20 -0600 [thread overview]
Message-ID: <20071216182720.GZ19691@waste.org> (raw)
In-Reply-To: <200712161240.54594.m.kozlowski@tuxland.pl>
On Sun, Dec 16, 2007 at 12:40:53PM +0100, Mariusz Kozlowski wrote:
> > cat /proc/kpageflags on sparc64 causes the box to lock.
> > I can not write on any terminal - but I can issue sysrqs and switch
> > between consoles.
> >
> > cat process hangs in read(3, ...
>
> cat /proc/kpagecount produces similar symptoms. box is locked - sysrq-w sshd trace:
>
> __down
> __down_interruptible
> kobject_get
> lock_kernel
> chrdev_open
> __dentry_open
> nameidata_to_filp
> open_pathname
> do_sys_open
> sparc32_open
> linux_sparc_syscall32
Perhaps this is related to sparsemem.
Can you change line 710 of fs/proc/proc_misc.c to:
ppage = NULL;
..and see if it still breaks?
--
Mathematics is the supreme nostalgia of our time.
next prev parent reply other threads:[~2007-12-16 18:27 UTC|newest]
Thread overview: 76+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-13 10:40 2.6.24-rc5-mm1 Andrew Morton
2007-12-13 11:59 ` 2.6.24-rc5-mm1 kobject changes broken with hvcs driver on powerpc - regression Kamalesh Babulal
2007-12-13 16:22 ` Greg KH
2007-12-13 12:28 ` 2.6.24-rc5-mm1 Gautham R Shenoy
2007-12-13 21:15 ` 2.6.24-rc5-mm1 Andrew Morton
2007-12-14 9:49 ` 2.6.24-rc5-mm1 Andrew Morton
2007-12-14 13:15 ` 2.6.24-rc5-mm1 Gregory Haskins
2007-12-13 14:18 ` 2.6.24-rc5-mm1 Pierre Peiffer
2007-12-13 15:01 ` 2.6.24-rc5-mm1 Benjamin Thery
2007-12-13 16:07 ` 2.6.24-rc5-mm1 Borislav Petkov
2007-12-13 17:54 ` 2.6.24-rc5-mm1 Adrian Bunk
2007-12-13 17:45 ` 2.6.24-rc5-mm1 David Miller
2007-12-14 2:08 ` 2.6.24-rc5-mm1 Herbert Xu
2007-12-14 19:26 ` 2.6.24-rc5-mm1 David Miller
2007-12-13 14:56 ` 2.6.24-rc5-mm1 regression - kernel warning on tcp_fastretrans_alert() Kamalesh Babulal
2007-12-13 19:55 ` Andrew Morton
2007-12-13 15:16 ` 2.6.24-rc5-mm1 - build failures due to kobject changes Kamalesh Babulal
2007-12-13 16:21 ` Greg KH
2007-12-13 17:46 ` (was Re: 2.6.24-rc5-mm1) crypto/authenc.c select symbol in Kconfig Borislav Petkov
2007-12-14 8:53 ` Herbert Xu
2007-12-14 5:32 ` 2.6.24-rc5-mm1 Dave Young
2007-12-14 15:44 ` 2.6.24-rc5-mm1 Alan Stern
2007-12-17 1:14 ` 2.6.24-rc5-mm1 Dave Young
2007-12-19 7:49 ` 2.6.24-rc5-mm1 Dave Young
2007-12-19 16:07 ` 2.6.24-rc5-mm1 Alan Stern
2007-12-20 0:43 ` 2.6.24-rc5-mm1 Dave Young
2007-12-20 3:34 ` 2.6.24-rc5-mm1 Alan Stern
2007-12-20 4:32 ` 2.6.24-rc5-mm1 Dave Young
2007-12-14 14:08 ` 2.6.24-rc5-mm1 Dhaval Giani
2007-12-15 19:20 ` 2.6.24-rc5-mm1 Alexey Dobriyan
2007-12-16 9:10 ` 2.6.24-rc5-mm1 Andrew Morton
2007-12-15 23:59 ` broken suspend, sometimes (drm related) [Was: 2.6.24-rc5-mm1] Jiri Slaby
2007-12-17 16:55 ` Jesse Barnes
2007-12-16 0:18 ` 2.6.24-rc5-mm1: cat /proc/net/packet -> oops Mariusz Kozlowski
2007-12-16 3:07 ` Herbert Xu
2007-12-16 3:41 ` [PACKET]: Fix /proc/net/packet crash due to bogus private pointer Herbert Xu
2007-12-16 10:48 ` Mariusz Kozlowski
2007-12-16 22:04 ` David Miller
2007-12-16 10:11 ` 2.6.24-rc5-mm1: problems with cat /proc/kpageflags Mariusz Kozlowski
2007-12-16 10:14 ` Mariusz Kozlowski
2007-12-16 10:41 ` Mariusz Kozlowski
2007-12-16 11:40 ` Mariusz Kozlowski
2007-12-16 18:27 ` Matt Mackall [this message]
2007-12-16 18:48 ` Mariusz Kozlowski
2007-12-16 19:10 ` Mariusz Kozlowski
2007-12-17 2:11 ` Matt Mackall
2007-12-17 4:26 ` David Miller
2007-12-17 6:39 ` Andrew Morton
2007-12-17 14:55 ` Matt Mackall
2007-12-20 12:53 ` David Miller
2007-12-20 17:45 ` Matt Mackall
2007-12-20 19:47 ` Mariusz Kozlowski
2007-12-21 0:17 ` David Miller
2007-12-21 1:06 ` Matt Mackall
2007-12-21 3:15 ` David Miller
2007-12-21 21:51 ` Mariusz Kozlowski
2007-12-22 5:00 ` Andrew Morton
2007-12-17 19:05 ` Mariusz Kozlowski
2007-12-17 22:44 ` 2.6.24-rc5-mm1 - wonky disk cache and CDROM behavior Valdis.Kletnieks
2007-12-17 22:56 ` Andrew Morton
2007-12-18 2:07 ` Valdis.Kletnieks
2007-12-18 2:37 ` Dave Young
2007-12-18 2:52 ` Andrew Morton
2007-12-18 5:52 ` Valdis.Kletnieks
2007-12-19 1:22 ` David Howells
2007-12-19 1:33 ` Dave Young
2007-12-19 2:04 ` Andrew Morton
2007-12-19 3:30 ` Jeff Dike
2007-12-18 6:10 ` 2.6.24-rc5-mm1 - IPv6 throws section mismatches Valdis.Kletnieks
2007-12-18 15:12 ` Daniel Lezcano
2007-12-20 16:55 ` 2.6.24-rc5-mm1 Jason Wessel
2007-12-20 23:11 ` 2.6.24-rc5-mm1 Andrew Morton
2007-12-21 13:46 ` 2.6.24-rc5-mm1 Jason Wessel
2007-12-20 20:57 ` 2.6.24-rc5-mm1 - SCSI/blkdev probing hang Rik van Riel
2007-12-20 21:22 ` Andrew Morton
2007-12-24 15:12 ` Rik van Riel
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