linux-kernel - Re: [git pull] PCI fixes

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Message-ID: <m28w0tzffv.fsf@whitebox.home>
Date:	Tue, 16 Nov 2010 12:16:36 +0100
From:	Andreas Schwab <schwab@...ux-m68k.org>
To:	Jesse Barnes <jbarnes@...tuousgeek.org>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [git pull] PCI fixes

Jesse Barnes <jbarnes@...tuousgeek.org> writes:

> Martin Wilck (1):
>       PCI: fix size checks for mmap() on /proc/bus/pci files

That breaks X.

process "X" tried to map 0x00010000 bytes at page 0x00000000 on 0000:00:10.0 BAR 2 (start 0x        90000000, size 0x           10000)
------------[ cut here ]------------
WARNING: at drivers/pci/pci-sysfs.c:758
Modules linked in: usb_storage uas uinput cpufreq_conservative rfcomm cpufreq_userspace cpufreq_powersave sco bridge stp llc bnep l2cap crc16 snd_pcm_oss snd_mixer_oss snd_seq snd_seq_device tun nf_conntrack_ipv6 nf_defrag_ipv6 ip6t_REJECT ip6t_LOG ip6table_filter ip6_tables xt_TCPMSS xt_recent ipt_MASQUERADE xt_state ipt_REJECT ipt_LOG xt_tcpudp iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 iptable_filter ip_tables x_tables loop dm_mod btusb bluetooth arc4 snd_aoa_codec_tas ecb snd_aoa_fabric_layout snd_aoa snd_aoa_i2sbus snd_pcm b43 joydev mac80211 snd_timer snd_page_alloc firewire_ohci appletouch snd soundcore cfg80211 sungem sungem_phy firewire_core rfkill sr_mod crc_itu_t sg snd_aoa_soundbus ssb cdrom sd_mod pata_macio libata scsi_mod
NIP: c0177b10 LR: c0177b10 CTR: 00000001
REGS: c2461d90 TRAP: 0700   Tainted: G        W    (2.6.37-rc2)
MSR: 00029032 <EE,ME,CE,IR,DR>  CR: 20000824  XER: 20000000
TASK = c2568d00[2009] 'X' THREAD: c2460000
GPR00: c0177b10 c2461e40 c2568d00 0000008a 00006a86 ffffffff c055fb36 c055febc 
GPR08: 000069fe c0440000 c055febc c2461e00 ffffffff 1022e9e4 10226a14 00000000 
GPR16: 103eadc0 00000000 00000001 1022bf1c ef136688 00000000 ffffffea 00000001 
GPR24: 00000000 00000000 00000000 00010000 ef806d68 ef136688 00000002 ef806c38 
NIP [c0177b10] pci_mmap_resource+0xf0/0x174
LR [c0177b10] pci_mmap_resource+0xf0/0x174
Call Trace:
[c2461e40] [c0177b10] pci_mmap_resource+0xf0/0x174 (unreliable)
[c2461e80] [c00f7514] mmap+0x74/0xfc
[c2461eb0] [c008e3e4] mmap_region+0x1e4/0x3bc
[c2461f00] [c008e93c] sys_mmap_pgoff+0xa4/0xe0
[c2461f30] [c00060a0] sys_mmap+0x28/0x40
[c2461f40] [c0010bc4] ret_from_syscall+0x0/0x40
--- Exception: c01 at 0xfa95f24
    LR = 0xfd897c8
Instruction dump:
3b400000 7fff0214 813f0134 38090001 7f6a0050 3c60c03d 7fc8f378 93410008 
39200000 3863bd36 9361000c 4819c31d <0fe00000> 3800ffea 48000070 7fc4f378 
---[ end trace a096109c06ace62c ]---

Andreas.

-- 
Andreas Schwab, schwab@...ux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."
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