On Thu, 9 Jun 2011 22:15:05 +0200 (CEST) Martijn Uffing <mp3project@xxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote: > > Ave People > > > I've got an oops with 3.0-rc1. (The same Oops also occurs with 3.0-rc2 and > the git snapshot of today linux-2.6-06e8684.) > The Oops occurs at boot time while the boot scripts try to automount a samba > share. > > Last (tested) working kernel : 2.6.39 > First (tested) oopsing kernel : 3.0-rc1 > > I'm willing to try patches, and if it's needed, I can try to > git-bisect the kernel. However, I'm short on time and thought maybe somebody > already has some idea. I did a diff between 2.6.39/3.0-rc1 and there seems > to be a lot of code churn in cifs. > > Details of client/server and the Oops attached. If there are any questions > please ask and CC: to my mail address. I'm not subscribed to > linux-cifs/linux-kernel > > Martijn Uffing > > > > CLIENT: > > -Debian squeeze (64 bits) > -kernel vanilla 2.6.39 working (core 2 duo) > -kernel vanilla 3.0-rc1 crashing (core 2 duo) > -fstab > X.X.X.X/sysadmin /home/XXXX/docs_sysadmin cifs guest,uid=XXXX,gid=XXXX,users,auto,nounix,nobrl 0 0 > -cat kernelconfig|grep CIFS > CONFIG_CIFS=m > CONFIG_CIFS_STATS=y > # CONFIG_CIFS_STATS2 is not set > CONFIG_CIFS_WEAK_PW_HASH=y > CONFIG_CIFS_UPCALL=y > # CONFIG_CIFS_XATTR is not set > # CONFIG_CIFS_DEBUG2 is not set > CONFIG_CIFS_DFS_UPCALL=y > # CONFIG_CIFS_FSCACHE is not set > CONFIG_CIFS_NFSD_EXPORT=y > > > SERVER: > -Debian etch (32 bits) > -kernel vanilla 2.6.27.59 > -samba 3.0.24-6etch10 > -samba share: > [sysadmin] > path = /root/sysadmin/docs > guest ok = yes > guest only = yes > force user = root > writable = yes > printable = no > browseable = yes > hosts deny = ALL > hosts allow = X.X.X.X > > OOPS: > Installing knfsd (copyright (C) 1996 okir@xxxxxxxxxxxx). > svc: failed to register lockdv1 RPC service (errno 97). > Registering the dns_resolver key type > CIFS VFS: default security mechanism requested. The default security mechanism will be upgraded from ntlm to ntlmv2 in kernel release 2.6.41 > BUG: unable to handle kernel NULL pointer dereference at 00000000000000a0 > IP: [<ffffffffa0413286>] CIFSTCon+0xf6/0x4d0 [cifs] > PGD 12a9a1067 PUD 1270ef067 PMD 0 > Oops: 0000 [#1] SMP > CPU 1 > Modules linked in: des_generic ecb md4 hmac nls_utf8 cifs dns_resolver nfsd nfs lockd fscache sunrpc xfs fuse radeon ttm drm_kms_helper drm i2c_algo_bit cfbcopyarea cfbimgblt cfbfillrect loop sg asus_atk0110 sr_mod cdrom usbhid hid pata_marvell sky2 skge evdev snd_hda_codec_hdmi snd_hda_codec_analog snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi intel_agp intel_gtt snd_seq_midi_event snd_seq tpm_tis tpm snd_timer snd_seq_device i2c_i801 snd i2c_core uhci_hcd soundcore snd_page_alloc ehci_hcd tpm_bios pcspkr > > Pid: 2065, comm: mount.cifs Not tainted 3.0.0-rc1 #1 System manufacturer P5Q-E/P5Q-E > RIP: 0010:[<ffffffffa0413286>] [<ffffffffa0413286>] CIFSTCon+0xf6/0x4d0 [cifs] > RSP: 0018:ffff880127d17b48 EFLAGS: 00010282 > RAX: ffff88012a905400 RBX: ffff880129dc4200 RCX: 0000000000000000 > RDX: 0000000000000811 RSI: ffff88012a9055ea RDI: ffff88012a905578 > RBP: ffff880127d17ba8 R08: 0000000000000005 R09: 0000000000000001 > R10: ffff88012638d600 R11: ffffffffa00600c0 R12: ffff880128bd0140 > R13: 0000000000000000 R14: ffff880128bd016f R15: 0000000000000000 > FS: 00007f4cbf033700(0000) GS:ffff88012fd00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > CR2: 00000000000000a0 CR3: 000000012a9f1000 CR4: 00000000000406e0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 > Process mount.cifs (pid: 2065, threadinfo ffff880127d16000, task ffff880127b26880) > Stack: > ffff8801273a5900 ffff88012638d600 ffffffffa00600c0 0000000300000001 > ffff880127d17b78 ffff88012a905560 ffff880127d17ba8 ffff880127d17c74 > ffff880127d17c68 ffff880129dc4200 00000000fffffff4 ffff8801279b7f01 > Call Trace: > [<ffffffffa041479e>] get_dfs_path+0x11e/0x190 [cifs] > [<ffffffffa041492c>] expand_dfs_referral+0x11c/0x220 [cifs] > [<ffffffffa0425b55>] ? cifs_buf_release+0x15/0x20 [cifs] > [<ffffffffa040d211>] ? CIFSSMBQFSAttributeInfo+0x1b1/0x260 [cifs] > [<ffffffffa0415dc5>] cifs_mount+0x2c5/0x5d0 [cifs] > [<ffffffff810b2c7d>] ? bdi_setup_and_register+0x7d/0xa0 > [<ffffffffa0408311>] cifs_do_mount+0x1f1/0x3b0 [cifs] > [<ffffffff810db35b>] mount_fs+0x1b/0xd0 > [<ffffffff810f5c6e>] vfs_kern_mount+0x5e/0xd0 > [<ffffffff810f5d4d>] do_kern_mount+0x4d/0x110 > [<ffffffff810f732b>] do_mount+0x2cb/0x7d0 > [<ffffffff810f78c3>] sys_mount+0x93/0xe0 > [<ffffffff8138bdbb>] system_call_fastpath+0x16/0x1b > Code: b4 02 00 10 0f 84 e7 02 00 00 48 8b 73 40 8b be cc 01 00 00 85 ff 0f 84 de 02 00 00 4c 89 55 a8 4c 89 5d b0 48 81 c6 ea 01 00 00 > 8b bd a0 00 00 00 4c 89 f2 e8 3b 37 01 00 4c 8b 5d b0 4c 8b > RIP [<ffffffffa0413286>] CIFSTCon+0xf6/0x4d0 [cifs] > RSP <ffff880127d17b48> > CR2: 00000000000000a0 > ---[ end trace 64d92145e3df4829 ]--- > Thanks for the bug report, Martin. Can you do the following to get us a listing of the place where it fell down? http://wiki.samba.org/index.php/LinuxCIFS_troubleshooting#Oopses That should give us a better idea of what went wrong. Thanks, -- Jeff Layton <jlayton@xxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-cifs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
