Public bug reported:
Upgrading from linux-image-2.6.27-9-generic (in intrepid-updates) to
linux-image-2.6.27-11-generic (in intrepid-proposed) creates the
following BUG when mounting a cifs share using IPv6
# mount -t cifs -o user=berni,ip=2001:xxxxxx::69 //fileserv/pub /pub
Password:
<a few seconds>
# (/pub is not mounted)
The following appears in dmesg:
[28816.788084] CIFS VFS: Error connecting to socket. Aborting operation
[28816.788094] CIFS VFS: cifs_mount failed w/return code = -113
[28816.788121] BUG: unable to handle kernel paging request at 69000030
[28816.788125] IP: [<f9bfde00>] :cifs:cifs_read_super+0xa0/0x1e0
[28816.788140] *pde = 00000000
[28816.788144] Oops: 0000 [#1] SMP
[28816.788148] Modules linked in: nls_utf8 ufs qnx4 hfsplus hfs minix ntfs vfat
msdos fat jfs xfs reiserfs ext2 nls_cp437 cifs af_packet binfmt_misc rfcomm
bridge stp bnep sco l2cap bluetooth kvm_amd kvm ppdev tun ipv6 pci_slot
container sbs sbshc video output battery iptable_filter ip_tables x_tables ac
parport_pc lp parport serio_raw psmouse snd_hda_intel snd_pcm_oss snd_mixer_oss
snd_pcm pcspkr snd_seq_dummy k8temp snd_seq_oss snd_seq_midi snd_rawmidi
snd_seq_midi_event snd_seq snd_timer snd_seq_device snd soundcore i2c_piix4
snd_page_alloc i2c_core evdev dm_multipath scsi_dh pl2303 usbserial fglrx(P)
agpgart wmi button shpchp pci_hotplug ext3 jbd mbcache sr_mod cdrom pata_acpi
sd_mod crc_t10dif pata_atiixp sg usbhid hid usb_storage libusual ata_generic
ahci ohci_hcd ehci_hcd libata usbcore scsi_mod dock r8169 mii dm_mirror dm_log
dm_snapshot dm_mod thermal processor fan fbcon tileblit font bitblit softcursor
fuse
[28816.788215]
[28816.788219] Pid: 20540, comm: mount.cifs Tainted: P
(2.6.27-11-generic #1)
[28816.788222] EIP: 0060:[<f9bfde00>] EFLAGS: 00010286 CPU: 0
[28816.788232] EIP is at cifs_read_super+0xa0/0x1e0 [cifs]
[28816.788234] EAX: 00000044 EBX: 69000000 ECX: ffffffff EDX: 00000046
[28816.788237] ESI: d43b5000 EDI: ffffff8f EBP: d42a1e8c ESP: d42a1e6c
[28816.788239] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
[28816.788242] Process mount.cifs (pid: 20540, ti=d42a0000 task=d1b48c90
task.ti=d42a0000)
[28816.788245] Stack: f9c24428 ffffff8f d31aa000 d8951e00 0000004e d8951e00
d8951e00 00000000
[28816.788252] d42a1eb0 f9bfdfa9 00000000 f6603e80 fffffff4 d31aa000
f6603e80 00000000
[28816.788258] f9c38520 d42a1ed8 c01b468e d43b5000 f6603e80 d31aa000
00000040 d4086000
[28816.788264] Call Trace:
[28816.788270] [<f9bfdfa9>] ? cifs_get_sb+0x69/0xc0 [cifs]
[28816.788282] [<c01b468e>] ? vfs_kern_mount+0x5e/0x130
[28816.788292] [<c01b47be>] ? do_kern_mount+0x3e/0xe0
[28816.788296] [<c01cccff>] ? do_new_mount+0x6f/0x90
[28816.788301] [<c01cd242>] ? do_mount+0x1d2/0x1f0
[28816.788306] [<c01ca95d>] ? exact_copy_from_user+0x4d/0xa0
[28816.788310] [<c01caf6e>] ? copy_mount_options+0x6e/0xd0
[28816.788314] [<c01cd2f1>] ? sys_mount+0x91/0xc0
[28816.788318] [<c0103f7b>] ? sysenter_do_call+0x12/0x2f
[28816.788323] =======================
[28816.788324] Code: 65 c6 8b 43 30 8b 55 f0 c6 04 10 00 8b 45 e8 89 f1 89 da
89 04 24 8b 45 ec e8 fd dc 00 00 85 c0 89 c7 74 57 8b 45 08 85 c0 74 30 <8b> 43
30 85 c0 74 0c e8 a4 f0 5a c6 c7 43 30 00 00 00 00 8b 43
[28816.788354] EIP: [<f9bfde00>] cifs_read_super+0xa0/0x1e0 [cifs] SS:ESP
0068:d42a1e6c
[28816.788365] ---[ end trace 9d71176ecad6924f ]---
This is probably related to a few upstream cifs changes in
2.6.27-11-generic, I'll report to lkml as well
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
--
cifs+IPv6 regression 2.6.27-9 -> 2.6.27-11
https://bugs.launchpad.net/bugs/318565
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