Public bug reported:
Hello,
Description: Ubuntu intrepid (development branch)
Release: 8.10
Having a eeepc 701 with /usr as squashfs.
TWO (mutual exlusive) readahead-list null pointer dereferences.
The first one appeared without "linux" meta package installed,
no -restricted packages etc, so only that package
linux-image-2.6.27-2-generic:
Installiert: 2.6.27-2.3
Kandidat: 2.6.27-2.3
Versions-Tabelle:
*** 2.6.27-2.3 0
500 http://de.archive.ubuntu.com intrepid/main Packages
100 /var/lib/dpkg/status
Relevant excerp from dmesg:
[ 39.933615] BUG: unable to handle kernel NULL pointer dereference at 00000000
[ 39.933820] IP: [<00000000>]
[ 39.933939] *pde = 00000000
[ 39.933961] Oops: 0000 [#1] SMP
[ 39.934108] Modules linked in: ext3 jbd loop squashfs unionfs parport_pc lp
parport joydev psmouse serio_raw uvcvideo compat_ioctl32 videodev v4l1_compat
snd_hda_intel snd_pcsp snd_pcm_oss snd_pcm snd_mixer_oss atl2 video output
snd_seq_dummy battery ac eeepc_laptop button snd_seq_oss snd_seq_midi
snd_rawmidi snd_seq_midi_event snd_seq iTCO_wdt iTCO_vendor_support snd_timer
snd_seq_device intel_agp snd agpgart shpchp pci_hotplug soundcore
snd_page_alloc evdev ext2 mbcache sg sd_mod crc_t10dif usbhid hid usb_storage
ata_piix pata_acpi ahci libusual ata_generic libata scsi_mod dock uhci_hcd
ehci_hcd usbcore thermal processor fan fbcon tileblit font bitblit softcursor
uvesafb cn fuse
[ 39.936013]
[ 39.936013] Pid: 3906, comm: readahead-list Not tainted (2.6.27-2-generic #1)
[ 39.936013] EIP: 0060:[<00000000>] EFLAGS: 00010286 CPU: 0
[ 39.936013] EIP is at 0x0
[ 39.936013] EAX: f72731b8 EBX: f6975340 ECX: 00000001 EDX: 00000000
[ 39.936013] ESI: f7273194 EDI: f72731b8 EBP: f699df28 ESP: f699dea8
[ 39.936013] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
[ 39.936013] Process readahead-list (pid: 3906, ti=f699c000 task=f7497110
task.ti=f699c000)
[ 39.936013] Stack: f8cb9642 f6959500 00000000 f699df18 c01b0876 c2189914
c05c780c f688fb88
[ 39.936013] c2189914 00000000 00009914 fffffff4 000000d0 c2189914
f6975340 f6959500
[ 39.936013] 00000000 c2189914 00000000 c0192a7d 00000000 000c68a0
00000000 f7273264
[ 39.936013] Call Trace:
[ 39.936013] [<f8cb9642>] ? squashfs_readpage+0x172/0x510 [squashfs]
[ 39.936013] [<c01b0876>] ? mem_cgroup_charge_common+0x1a6/0x280
[ 39.936013] [<c0192a7d>] ? __inc_zone_page_state+0x1d/0x20
[ 39.936013] [<c0186707>] ? add_to_page_cache_lru+0x47/0x60
[ 39.936013] [<c018e1f8>] ? __do_page_cache_readahead+0x168/0x1e0
[ 39.936013] [<c018e343>] ? force_page_cache_readahead+0x63/0x90
[ 39.936013] [<c01851fb>] ? sys_readahead+0x9b/0xc0
[ 39.936013] [<c0103f6b>] ? sysenter_do_call+0x12/0x2f
[ 39.936013] [<c0390000>] ? do_boot_cpu+0x330/0x40a
[ 39.936013] =======================
[ 39.936013] Code: Bad EIP value.
[ 39.936013] EIP: [<00000000>] 0x0 SS:ESP 0068:f699dea8
[ 39.941137] ---[ end trace e322e72132713db4 ]---
The second then appeared, after apt-get install linux, the -restricted etc. was
then newly installed,
relevant excerp of dmesg:
[ 40.621108] BUG: unable to handle kernel NULL pointer dereference at 00000058
[ 40.621312] IP: [<c01dbd58>] bio_get_nr_vecs+0x8/0x40
[ 40.621451] *pde = 00000000
[ 40.621472] Oops: 0000 [#1] SMP
[ 40.621622] Modules linked in: ext3 jbd loop squashfs unionfs parport_pc lp
parport joydev psmouse serio_raw uvcvideo compat_ioctl32 videodev v4l1_compat
snd_hda_intel snd_pcsp snd_pcm_oss snd_pcm snd_mixer_oss atl2 video output
snd_seq_dummy battery ac eeepc_laptop button snd_seq_oss snd_seq_midi
snd_rawmidi snd_seq_midi_event snd_seq iTCO_wdt iTCO_vendor_support snd_timer
snd_seq_device intel_agp agpgart snd shpchp pci_hotplug soundcore
snd_page_alloc evdev ext2 mbcache sg sd_mod crc_t10dif usbhid hid usb_storage
ata_piix pata_acpi ahci libusual ata_generic libata scsi_mod dock uhci_hcd
ehci_hcd usbcore thermal processor fan fbcon tileblit font bitblit softcursor
uvesafb cn fuse
[ 40.624013]
[ 40.624013] Pid: 3939, comm: readahead-list Not tainted (2.6.27-2-generic #1)
[ 40.624013] EIP: 0060:[<c01dbd58>] EFLAGS: 00010246 CPU: 0
[ 40.624013] EIP is at bio_get_nr_vecs+0x8/0x40
[ 40.624013] EAX: 00000000 EBX: 00001000 ECX: 0000000c EDX: f6ae5ecc
[ 40.624013] ESI: b969fd00 EDI: 00000007 EBP: f6ae5dfc ESP: f6ae5dfc
[ 40.624013] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
[ 40.624013] Process readahead-list (pid: 3939, ti=f6ae4000 task=f6aff110
task.ti=f6ae4000)
[ 40.624013] Stack: f6ae5ea8 c01e1427 f6ae5ecc 00000000 0000123b 00000000
00000002 c2170d38
[ 40.624013] 00000000 f72d4030 0000000c 00000001 00000001 00000000
00000001 00000001
[ 40.624013] 00000000 00000001 f72d3fa0 00000000 00000001 00000001
00000002 00000000
[ 40.624013] Call Trace:
[ 40.624013] [<c01e1427>] ? do_mpage_readpage+0x3d7/0x710
[ 40.624013] [<c0192a7d>] ? __inc_zone_page_state+0x1d/0x20
[ 40.624013] [<c0186686>] ? add_to_page_cache_locked+0xb6/0xf0
[ 40.624013] [<c0186707>] ? add_to_page_cache_lru+0x47/0x60
[ 40.624013] [<c01e1884>] ? mpage_readpages+0xc4/0x100
[ 40.624013] [<f89c82d0>] ? ext2_get_block+0x0/0x60 [ext2]
[ 40.624013] [<c018b34e>] ? __alloc_pages_internal+0xbe/0x4a0
[ 40.624013] [<f89c6d10>] ? ext2_readpages+0x0/0x20 [ext2]
[ 40.624013] [<f89c6d2e>] ? ext2_readpages+0x1e/0x20 [ext2]
[ 40.624013] [<f89c82d0>] ? ext2_get_block+0x0/0x60 [ext2]
[ 40.624013] [<c018e1cc>] ? __do_page_cache_readahead+0x13c/0x1e0
[ 40.624013] [<c018e343>] ? force_page_cache_readahead+0x63/0x90
[ 40.624013] [<c01851fb>] ? sys_readahead+0x9b/0xc0
[ 40.624013] [<c0103f6b>] ? sysenter_do_call+0x12/0x2f
[ 40.624013] [<c0390000>] ? do_boot_cpu+0x330/0x40a
[ 40.624013] =======================
[ 40.624013] Code: 00 00 00 ff 52 44 5d 8d 74 26 00 c3 0f 0b 90 8d 74 26 00
eb f9 8d b4 26 00 00 00 00 8d bc 27 00 00 00 00 55 89 e5 0f 1f 44 00 00 <8b> 40
58 8b 50 34 8b 82 8c 01 00 00 c1 e0 09 8d 88 ff 0f 00 00
[ 40.624013] EIP: [<c01dbd58>] bio_get_nr_vecs+0x8/0x40 SS:ESP 0068:f6ae5dfc
[ 40.631803] ---[ end trace 34684a3408387c70 ]---
So the one or the other appears. (Maybe something from the Bios read
Otherwise it continues to boot and looked at first degree good. But
can't confirm that it is void of secondary problems....
Roland
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
--
readahead-list null poiner dereferences
https://bugs.launchpad.net/bugs/268035
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