linux-kernel - Re: [1/2] 2.6.22-rc7: known regressions

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Date:	Thu, 05 Jul 2007 15:31:27 -0400
From:	David Woodhouse <dwmw2@...radead.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Michal Piotrowski <michal.k.k.piotrowski@...il.com>,
	marcel@...tmann.org, Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	reiserfs-devel@...r.kernel.org,
	"Vladimir V. Saveliev" <vs@...esys.com>,
	Randy Dunlap <randy.dunlap@...cle.com>,
	linux-ide@...r.kernel.org, David Chinner <dgc@....com>,
	sparclinux@...r.kernel.org, David Miller <davem@...emloft.net>,
	Mikael Pettersson <mikpe@...uu.se>,
	Mark Fortescue <mark@...hpc.demon.co.uk>,
	William Lee Irwin III <wli@...omorphy.com>, greg@...ah.com
Subject: Re: [1/2] 2.6.22-rc7: known regressions

On Thu, 2007-07-05 at 14:46 -0400, David Woodhouse wrote:
> Oh, I suck. I failed to noticed that it had oopsed earlier, in slab
> debugging. I shall look at my 'obviously correct' slab patch a little
> harder, now that I'm not distracted by the fireworks.

Hm, it's not something new. It's an oops I saw occasionally in 2.6.21-rc
too, whenever we had CONFIG_SYSFS_DEPRECATED set.

 Unable to handle kernel paging request for data at address 0x6b6b6b6b
 Faulting instruction address: 0xc001870c
 Oops: Kernel access of bad area, sig: 11 [#1]
 PowerMac
 Modules linked in: radeon(U) drm(U) hidp(U) hci_usb(U) rfcomm(U) l2cap(U) bluetooth(U) ipv6(U) nls_utf8(U) hfsplus(U) dm_mirror(U) dm_mod(U) therm_adt746x(U) parport_pc(U) lp(U) parport(U) loop(U) snd_aoa_i2sbus(U) snd_powermac(U) snd_seq_dummy(U) snd_seq_oss(U) snd_seq_midi_event(U) snd_seq(U) ide_cd(U) cdrom(U) snd_seq_device(U) pmac_zilog(U) snd_pcm_oss(U) snd_mixer_oss(U) snd_pcm(U) snd_timer(U) snd_page_alloc(U) snd(U) soundcore(U) snd_aoa_soundbus(U) firewire_ohci(U) firewire_core(U) crc_itu_t(U) sungem(U) sungem_phy(U) bcm43xx(U) ieee80211softmac(U) ieee80211(U) ieee80211_crypt(U) ext3(U) jbd(U) mbcache(U) ehci_hcd(U) ohci_hcd(U) uhci_hcd(U)
 NIP: c001870c LR: c0134fec CTR: c01d5078
 REGS: eed5bdc0 TRAP: 0300   Not tainted  (2.6.22-0.9.rc7.git3.fc8)
 MSR: 00009032 <EE,ME,IR,DR>  CR: 22000224  XER: 20000000
 DAR: 6b6b6b6b, DSISR: 40000000
 TASK = ef72a950[1753] 'khidpd_00000000' THREAD: eed5a000
 GPR00: 6b6b6b6b eed5be70 ef72a950 6b6b6b6b 6b6b6b6a ef18a3a0 0000001a ec8701c6 
 GPR08: 000007aa 00000014 00000000 00000005 00000000 2002163c 100d0000 00000000 
 GPR16: 00000000 7fb9a006 00000003 00000000 ee12cb08 c038cf20 ec870170 c037bf38 
 GPR24: ef6bab08 ec8701c6 0000001a 000007aa 00000001 ef6babb0 ef6babb0 000000d0 
 NIP [c001870c] strlen+0x4/0x18
 LR [c0134fec] kobject_get_path+0x34/0xc4
 Call Trace:
 [eed5be70] [c0098030] __kmalloc_track_caller+0x13c/0x164 (unreliable)
 [eed5be90] [c01d5124] class_uevent+0xac/0x1bc
 [eed5bed0] [c01357e4] kobject_uevent_env+0x23c/0x460
 [eed5bf20] [c01d485c] class_device_del+0x178/0x1a0
 [eed5bf40] [c01d489c] class_device_unregister+0x18/0x30
 [eed5bf60] [c021f820] input_unregister_device+0xf4/0x130
 [eed5bf70] [c0242f4c] hidinput_disconnect+0x2c/0x60
 [eed5bf90] [f27f2bac] hidp_session+0x550/0x584 [hidp]
 [eed5bff0] [c0013e28] kernel_thread+0x44/0x60
 Instruction dump:
 4082fff4 4e800020 38a3ffff 3884ffff 8c650001 2c830000 8c040001 7c601851 
 4d860020 4182ffec 4e800020 3883ffff <8c040001> 2c000000 4082fff8 7c632050 


-- 
dwmw2

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