From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Subject: Re: [BUG] unable to handle kernel NULL pointer dereference Date: Sat, 15 Feb 2014 12:08:37 -0800 (PST) Message-ID: <1392494917.71728.YahooMailNeo@web140002.mail.bf1.yahoo.com> References: <1392466251.41282.YahooMailNeo@web140003.mail.bf1.yahoo.com> Reply-To: John Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: "da_audiophile@yahoo.com" , "stephen@networkplumber.org" , "mlindner@marvell.com" To: lkml , "netdev@vger.kernel.org" Return-path: In-Reply-To: <1392466251.41282.YahooMailNeo@web140003.mail.bf1.yahoo.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org > When booting into linux v3.13.3, I am unable to mount an nfs share on= this=A0 > particular hardware. =A0I get the same problem using v3.12.11. =A0Onl= y the 3.10.x=20 > series allows normal operation. =A0Partial dmesg output shown inline,= additional=20 > logs available upon request. >=20 > PLEASE cc me on my replies as I am not subscribed to lkml. >=20 > Hardware: Athlon XP 3200+ on an NVIDIA nForce2 Ultra 400 motherboard. > Distro: Arch Linux i686. >=20 > % dmesg > ... > [ 137.616014] NFS: Registering the id_resolver key type > [ 137.616036] Key type id_resolver registered > [ 137.616038] Key type id_legacy registered > [ 137.686758] BUG: unable to handle kernel NULL pointer dereference a= t 00000858 > [ 137.689996] IP: [] put_pipe_version+0x19/0x60 [auth_rpcgs= s] > [ 137.689996] *pde =3D 00000000=A0 > [ 137.689996] Oops: 0000 [#1] PREEMPT SMP=A0 > [ 137.689996] Modules linked in: rpcsec_gss_krb5 auth_rpcgss oid_regi= stry nfsv4=20 > asb100 hwmon_vid snd_wavefront ir_mce_kbd_decoder ir_lirc_codec=20 > ir_rc5_sz_decoder ir_sony_decoder lirc_dev ir_rc5_decoder ir_jvc_deco= der=20 > ir_sanyo_decoder ir_rc6_decoder ir_nec_decoder rc_streamzap streamzap= mousedev=20 > snd_cs4236 rc_core snd_intel8x0 snd_wss_lib snd_opl3_lib snd_hwdep=20 > snd_ac97_codec evdev snd_mpu401 ac97_bus snd_mpu401_uart snd_pcm snd_= rawmidi=20 > snd_page_alloc snd_seq_device snd_timer snd pcspkr skge shpchp i2c_nf= orce2=20 > i2c_core soundcore ns558 gameport processor button nvidia_agp agpgart= nfs lockd=20 > sunrpc fscache ext4 crc16 mbcache jbd2 hid_generic usbhid hid sr_mod = cdrom=20 > sd_mod ata_generic pata_acpi sata_sil pata_amd libata ehci_pci ohci_p= ci ohci_hcd=20 > ehci_hcd scsi_mod usbcore usb_common > [ 137.689996] CPU: 0 PID: 534 Comm: rpc.gssd Not tainted 3.13.3-1-ARC= H #1 > [ 137.689996] Hardware name: ASUSTeK Computer INC. A7N8X-E/A7N8X-E, B= IOS ASUS=20 > A7N8X-E Deluxe ACPI BIOS Rev 1013 11/12/2004 > [ 137.689996] task: f4633210 ti: f568e000 task.ti: f568e000 > [ 137.689996] EIP: 0060:[] EFLAGS: 00010202 CPU: 0 > [ 137.689996] EIP is at put_pipe_version+0x19/0x60 [auth_rpcgss] > [ 137.689996] EAX: f4633210 EBX: 00000001 ECX: f56efca8 EDX: 00000296 > [ 137.689996] ESI: 00000000 EDI: f56efc00 EBP: f568fee8 ESP: f568fee0 > [ 137.689996] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 > [ 137.689996] CR0: 8005003b CR2: 00000858 CR3: 34523000 CR4: 000007d0 > [ 137.689996] Stack: > [ 137.689996] f56efc00 f6c64f78 f568fef4 f8aa2e05 00000010 f568ff40 f= 8aa3b38=20 > 00000374 > [ 137.689996] 00000080 b74dde40 f4644a80 f568ff30 00000246 f8ac1080 f= fff41c9=20 > f6c64f78 > [ 137.689996] fffffff3 00000010 f4460140 f44d5820 f44d5810 f53df7ec f= 57595a0=20 > f8aa93e8 > [ 137.689996] Call Trace: > [ 137.689996] [] gss_release_msg+0x25/0x70 [auth_rpcgss] > [ 137.689996] [] gss_pipe_downcall+0x208/0x4b0 [auth_rpcgss= ] > [ 137.689996] [] rpc_pipe_write+0x3b/0x60 [sunrpc] > [ 137.689996] [] ? rpc_pipe_poll+0x90/0x90 [sunrpc] > [ 137.689996] [] vfs_write+0x95/0x1c0 > [ 137.689996] [] SyS_write+0x51/0x90 > [ 137.689996] [] sysenter_do_call+0x12/0x28 > [ 137.689996] Code: f8 e8 4f b8 9a c8 31 c0 eb c6 90 8d b4 26 00 00 0= 0 00 55 89=20 > e5 56 53 3e 8d 74 26 00 8b 1d 28 e9 a3 f8 89 c6 e8 59 64 5f c8 85 db = <8b>=20 > 86 58 08 00 00 74 3a 3b 18 77 36 8b 5c 98 08 e8 32 66 5f c8 > [ 137.689996] EIP: [] put_pipe_version+0x19/0x60 [auth_rpcg= ss]=20 > SS:ESP 0068:f568fee0 > [ 137.689996] CR2: 0000000000000858 > [ 138.578433] ---[ end trace 3dcb8d5c35b64fbd ]--- > [ 142.979263] type=3D1006 audit(1392415950.632:4): pid=3D540 uid=3D0 = old=20 > auid=3D4294967295 new auid=3D1000 old ses=3D4294967295 new ses=3D3 re= s=3D1 I should add that if I test the same kernel version (v3.13.3 compiled f= or i686) on a similar machine of the same vintage, there is not a probl= em. =A0When I looked into the `lspci -v` output on the machine that has= the problems, I found that it seems to be related to the skge driver a= s shown below; the similar machine that does not have the problem is us= ing the forcedeth driver so I am hypothesizing that the error is with t= he skge driver. 01:04.0 Ethernet controller: Marvell Technology Group Ltd. 88E8001 Giga= bit Ethernet Controller (rev 13) =A0 =A0 =A0 =A0 Subsystem: ASUSTeK Computer Inc. Marvell 88E8001 Gigabi= t Ethernet Controller (Asus) =A0 =A0 =A0 =A0 Flags: bus master, 66MHz, medium devsel, latency 32, IR= Q 17 =A0 =A0 =A0 =A0 Memory at d5000000 (32-bit, non-prefetchable) [size=3D1= 6K] =A0 =A0 =A0 =A0 I/O ports at a000 [size=3D256] =A0 =A0 =A0 =A0 [virtual] Expansion ROM at 80080000 [disabled] [size=3D= 128K] =A0 =A0 =A0 =A0 Capabilities: [48] Power Management version 2 =A0 =A0 =A0 =A0 Capabilities: [50] Vital Product Data =A0 =A0 =A0 =A0 Kernel driver in use: skge =A0 =A0 =A0 =A0 Kernel modules: skge