From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Dumazet Subject: Re: 3.3-rc3+ Crash in __neigh_for_each_release Date: Tue, 21 Feb 2012 20:03:24 +0100 Message-ID: <1329851004.18384.45.camel@edumazet-laptop> References: Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: netdev@vger.kernel.org To: Meelis Roos , David Miller Return-path: Received: from mail-we0-f174.google.com ([74.125.82.174]:33473 "EHLO mail-we0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754520Ab2BUTDa (ORCPT ); Tue, 21 Feb 2012 14:03:30 -0500 Received: by werb13 with SMTP id b13so4020955wer.19 for ; Tue, 21 Feb 2012 11:03:29 -0800 (PST) In-Reply-To: Sender: netdev-owner@vger.kernel.org List-ID: Le lundi 20 f=C3=A9vrier 2012 =C3=A0 14:02 +0200, Meelis Roos a =C3=A9c= rit : > Just tried 3.3-rc3+git and 3.3-rc4 on a generic i815+P3+e100 PC. It=20 > crashes consistently during the end of bootup, getning oops in=20 > __neigh_for_each_release during timer softirq. 3.2 works fine. >=20 > [ 0.000000] Linux version 3.3.0-rc4 (mroos@rhn) (gcc version 4.6.2= (Debian 4.6.2-14) ) #16 PREEMPT Mon Feb 20 14:17:04 EET 2012 > [ 0.000000] BIOS-provided physical RAM map: > [ 0.000000] BIOS-e820: 0000000000000000 - 000000000009fc00 (usabl= e) > [ 0.000000] BIOS-e820: 000000000009fc00 - 00000000000a0000 (reser= ved) > [ 0.000000] BIOS-e820: 00000000000e0000 - 0000000000100000 (reser= ved) > [ 0.000000] BIOS-e820: 0000000000100000 - 000000000fec0000 (usabl= e) > [ 0.000000] BIOS-e820: 000000000fec0000 - 000000000fef8000 (ACPI = data) > [ 0.000000] BIOS-e820: 000000000fef8000 - 000000000ff00000 (ACPI = NVS) > [ 0.000000] BIOS-e820: 00000000ffb80000 - 00000000ffc00000 (reser= ved) > [ 0.000000] BIOS-e820: 00000000fff00000 - 0000000100000000 (reser= ved) > [ 0.000000] Notice: NX (Execute Disable) protection missing in CPU= ! > [ 0.000000] DMI 2.3 present. > [ 0.000000] last_pfn =3D 0xfec0 max_arch_pfn =3D 0x100000 > [ 0.000000] PAT not supported by CPU. > [ 0.000000] total RAM covered: 255M > [ 0.000000] Found optimal setting for mtrr clean up > [ 0.000000] gran_size: 64K chunk_size: 2M num_reg: 2 lose cov= er RAM: 0G > [ 0.000000] init_memory_mapping: 0000000000000000-000000000fec0000 > [ 0.000000] ACPI: RSDP 000ff980 00014 (v00 AMI ) > [ 0.000000] ACPI: RSDT 0fef0000 0002C (v01 D815EA D815EEA2 2002110= 6 MSFT 00001011) > [ 0.000000] ACPI: FACP 0fef1000 00074 (v01 D815EA EA81510A 2002110= 6 MSFT 00001011) > [ 0.000000] ACPI: DSDT 0fee0000 030E4 (v01 D815E2 EA81520A 0000002= 3 MSFT 0100000B) > [ 0.000000] ACPI: FACS 0fef8000 00040 > [ 0.000000] ACPI: SSDT 0fee30e4 00035 (v01 D815EA EA81510A 0000001= 5 MSFT 0100000B) > [ 0.000000] 254MB LOWMEM available. > [ 0.000000] mapped low ram: 0 - 0fec0000 > [ 0.000000] low ram: 0 - 0fec0000 > [ 0.000000] Zone PFN ranges: > [ 0.000000] DMA 0x00000010 -> 0x00001000 > [ 0.000000] Normal 0x00001000 -> 0x0000fec0 > [ 0.000000] Movable zone start PFN for each node > [ 0.000000] Early memory PFN ranges > [ 0.000000] 0: 0x00000010 -> 0x0000009f > [ 0.000000] 0: 0x00000100 -> 0x0000fec0 > [ 0.000000] Using APIC driver default > [ 0.000000] ACPI: PM-Timer IO Port: 0x408 > [ 0.000000] Found and enabled local APIC! > [ 0.000000] Allocating PCI resources starting at ff00000 (gap: ff0= 0000:efc80000) > [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on.= Total pages: 64593 > [ 0.000000] Kernel command line: BOOT_IMAGE=3D/boot/vmlinuz-3.3.0-= rc4 root=3D/dev/sda1 ro lapic netconsole=3D1980@192.168.74.17/eth0,1975= @192.168.74.24/00:50:8d:91:d9:f0 > [ 0.000000] PID hash table entries: 1024 (order: 0, 4096 bytes) > [ 0.000000] Dentry cache hash table entries: 32768 (order: 5, 1310= 72 bytes) > [ 0.000000] Inode-cache hash table entries: 16384 (order: 4, 65536= bytes) > [ 0.000000] Initializing CPU#0 > [ 0.000000] Memory: 253772k/260864k available (2381k kernel code, = 6640k reserved, 1365k data, 284k init, 0k highmem) > [ 0.000000] virtual kernel memory layout: > [ 0.000000] fixmap : 0xfffe3000 - 0xfffff000 ( 112 kB) > [ 0.000000] vmalloc : 0xd06c0000 - 0xfffe1000 ( 761 MB) > [ 0.000000] lowmem : 0xc0000000 - 0xcfec0000 ( 254 MB) > [ 0.000000] .init : 0xc13a9000 - 0xc13f0000 ( 284 kB) > [ 0.000000] .data : 0xc1253600 - 0xc13a8d20 (1365 kB) > [ 0.000000] .text : 0xc1000000 - 0xc1253600 (2381 kB) > [ 0.000000] Checking if this processor honours the WP bit even in = supervisor mode...Ok. > [ 0.000000] NR_IRQS:16 nr_irqs:16 16 > [ 0.000000] Console: colour VGA+ 80x25 > [ 0.000000] console [tty0] enabled > [ 0.000000] Fast TSC calibration using PIT > [ 0.000000] Detected 930.270 MHz processor. > [ 0.008004] Calibrating delay loop (skipped), value calculated usi= ng timer frequency.. 1860.54 BogoMIPS (lpj=3D3721080) > [ 0.008208] pid_max: default: 32768 minimum: 301 > [ 0.008426] Mount-cache hash table entries: 512 > [ 0.008800] mce: CPU supports 5 MCE banks > [ 0.008931] CPU: Intel Pentium III (Coppermine) stepping 06 > [ 0.009089] ACPI: Core revision 20120111 > [ 0.014061] ACPI: setting ELCR to 0200 (from 0e00) > [ 0.015242] Performance Events: p6 PMU driver. > [ 0.015358] ... version: 0 > [ 0.015450] ... bit width: 32 > [ 0.015543] ... generic registers: 2 > [ 0.015635] ... value mask: 00000000ffffffff > [ 0.015731] ... max period: 000000007fffffff > [ 0.015828] ... fixed-purpose events: 0 > [ 0.015921] ... event mask: 0000000000000003 > [ 0.016210] NMI watchdog enabled, takes one hw-pmu counter. > [ 0.020001] NET: Registered protocol family 16 > [ 0.020001] ACPI: bus type pci registered > [ 0.020001] PCI: PCI BIOS revision 2.10 entry at 0xfda95, last bus= =3D1 > [ 0.020001] PCI: Using configuration type 1 for base access > [ 0.025178] bio: create slab at 0 > [ 0.025598] ACPI: Added _OSI(Module Device) > [ 0.025700] ACPI: Added _OSI(Processor Device) > [ 0.025801] ACPI: Added _OSI(3.0 _SCP Extensions) > [ 0.025901] ACPI: Added _OSI(Processor Aggregator Device) > [ 0.029021] ACPI: Executed 1 blocks of module-level executable AML= code > [ 0.035893] ACPI: Interpreter enabled > [ 0.036019] ACPI: (supports S0 S5) > [ 0.036150] ACPI: Using PIC for interrupt routing > [ 0.040239] ACPI: Power Resource [FDDP] (off) > [ 0.041042] ACPI: Power Resource [URP1] (off) > [ 0.041866] ACPI: Power Resource [URP2] (off) > [ 0.042263] ACPI: Power Resource [LPTP] (off) > [ 0.047848] ACPI: No dock devices found. > [ 0.047978] PCI: Ignoring host bridge windows from ACPI; if necess= ary, use "pci=3Duse_crs" and report a bug > [ 0.048729] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff]) > [ 0.049988] PCI host bridge to bus 0000:00 > [ 0.050089] pci_bus 0000:00: root bus resource [io 0x0000-0xffff] > [ 0.050189] pci_bus 0000:00: root bus resource [mem 0x00000000-0xf= fffffff] > [ 0.051366] pci 0000:00:1e.0: PCI bridge to [bus 01-01] (subtracti= ve decode) > [ 0.052417] pci0000:00: Unable to request _OSC control (_OSC supp= ort mask: 0x08) > [ 0.056124] ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 6 7 9 10 *= 11 12) > [ 0.056466] ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 5 6 7 *9 10 = 11 12) > [ 0.056792] ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 6 7 9 10 1= 1 12) *0, disabled. > [ 0.057213] ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 6 7 9 10 *= 11 12) > [ 0.057534] ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 7 9 10 *= 11 12) > [ 0.057859] ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 7 9 10 1= 1 12) *0, disabled. > [ 0.058280] ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 5 6 7 9 10 1= 1 12) *0, disabled. > [ 0.058700] ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 5 6 7 9 *10 = 11 12) > [ 0.059320] vgaarb: device added: PCI:0000:00:02.0,decodes=3Dio+me= m,owns=3Dio+mem,locks=3Dnone > [ 0.059516] vgaarb: loaded > [ 0.059610] vgaarb: bridge control possible 0000:00:02.0 > [ 0.060247] SCSI subsystem initialized > [ 0.061156] PCI: Using ACPI for IRQ routing > [ 0.062055] pnp: PnP ACPI init > [ 0.062176] ACPI: bus type pnp registered > [ 0.069500] system 00:0c: [mem 0x00000000-0x0009ffff] could not be= reserved > [ 0.069620] system 00:0c: [mem 0x000e0000-0x000fffff] could not be= reserved > [ 0.069729] system 00:0c: [mem 0x00100000-0x0fefffff] could not be= reserved > [ 0.069863] pnp: PnP ACPI: found 13 devices > [ 0.069963] ACPI: ACPI bus type pnp unregistered > [ 0.111918] Switching to clocksource acpi_pm > [ 0.112079] pci 0000:00:1e.0: PCI bridge to [bus 01-01] > [ 0.112185] pci 0000:00:1e.0: bridge window [io 0xd000-0xdfff] > [ 0.112296] pci 0000:00:1e.0: bridge window [mem 0xff800000-0xff= 8fffff] > [ 0.112405] pci 0000:00:1e.0: bridge window [mem 0xf6a00000-0xf6= afffff pref] > [ 0.112807] NET: Registered protocol family 2 > [ 0.113046] IP route cache hash table entries: 2048 (order: 1, 819= 2 bytes) > [ 0.113392] TCP established hash table entries: 8192 (order: 4, 65= 536 bytes) > [ 0.113707] TCP bind hash table entries: 8192 (order: 3, 32768 byt= es) > [ 0.113911] TCP: Hash tables configured (established 8192 bind 819= 2) > [ 0.114014] TCP reno registered > [ 0.114113] UDP hash table entries: 256 (order: 0, 4096 bytes) > [ 0.114226] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes= ) > [ 0.114498] NET: Registered protocol family 1 > [ 0.114737] pci 0000:01:08.0: Firmware left e100 interrupts enable= d; disabling > [ 0.117097] VFS: Disk quotas dquot_6.5.2 > [ 0.117248] Dquot-cache hash table entries: 1024 (order 0, 4096 by= tes) > [ 0.117552] msgmni has been set to 495 > [ 0.118165] Block layer SCSI generic (bsg) driver version 0.4 load= ed (major 253) > [ 0.118358] io scheduler noop registered > [ 0.118481] io scheduler cfq registered (default) > [ 0.119025] Serial: 8250/16550 driver, 16 ports, IRQ sharing enabl= ed > [ 0.392083] serial8250: ttyS0 at I/O 0x3f8 (irq =3D 4) is a 16550A > [ 0.668081] serial8250: ttyS1 at I/O 0x2f8 (irq =3D 3) is a 16550A > [ 0.690295] 00:08: ttyS0 at I/O 0x3f8 (irq =3D 4) is a 16550A > [ 0.710933] 00:09: ttyS1 at I/O 0x2f8 (irq =3D 3) is a 16550A > [ 0.711547] Non-volatile memory driver v1.3 > [ 0.711654] Linux agpgart interface v0.103 > [ 0.711795] agpgart-intel 0000:00:00.0: Intel i815 Chipset > [ 0.711941] agpgart-intel 0000:00:00.0: detected gtt size: 65536K = total, 65536K mappable > [ 0.712863] agpgart-intel 0000:00:00.0: AGP aperture is 64M @ 0xf8= 000000 > [ 0.713087] Hangcheck: starting hangcheck timer 0.9.1 (tick is 180= seconds, margin is 60 seconds). > [ 0.713272] Hangcheck: Using getrawmonotonic(). > [ 0.713478] [drm] Initialized drm 1.1.0 20060810 > [ 0.713833] Floppy drive(s): fd0 is 1.44M > [ 0.731413] FDC 0 is a post-1991 82077 > [ 0.734129] scsi0 : ata_piix > [ 0.734521] scsi1 : ata_piix > [ 0.737239] ata1: PATA max UDMA/100 cmd 0x1f0 ctl 0x3f6 bmdma 0xff= a0 irq 14 > [ 0.737358] ata2: PATA max UDMA/100 cmd 0x170 ctl 0x376 bmdma 0xff= a8 irq 15 > [ 0.737993] e100: Intel(R) PRO/100 Network Driver, 3.5.24-k2-NAPI > [ 0.738097] e100: Copyright(c) 1999-2006 Intel Corporation > [ 0.738511] ACPI: PCI Interrupt Link [LNKE] enabled at IRQ 11 > [ 0.761695] e100 0000:01:08.0: eth0: addr 0xff86f000, irq 11, MAC = addr 00:03:47:a4:64:d5 > [ 0.762240] i8042: PNP: PS/2 Controller [PNP0303:PS2K,PNP0f03:PS2M= ] at 0x60,0x64 irq 1,12 > [ 0.765652] serio: i8042 KBD port at 0x60,0x64 irq 1 > [ 0.765844] serio: i8042 AUX port at 0x60,0x64 irq 12 > [ 0.766395] mousedev: PS/2 mouse device common for all mice > [ 0.766827] rtc_cmos 00:02: RTC can wake from S4 > [ 0.767132] rtc_cmos 00:02: rtc core: registered rtc_cmos as rtc0 > [ 0.767265] rtc0: alarms up to one month, 114 bytes nvram > [ 0.767456] cpuidle: using governor ladder > [ 0.767554] cpuidle: using governor menu > [ 0.769063] TCP cubic registered > [ 0.771339] NET: Registered protocol family 17 > [ 0.771470] Registering the dns_resolver key type > [ 0.771600] Using IPI Shortcut mode > [ 0.772140] netconsole: local port 1980 > [ 0.772244] netconsole: local IP 192.168.74.17 > [ 0.772343] netconsole: interface 'eth0' > [ 0.772439] netconsole: remote port 1975 > [ 0.772536] netconsole: remote IP 192.168.74.24 > [ 0.772636] netconsole: remote ethernet address 00:50:8d:91:d9:f0 > [ 0.772787] netconsole: device eth0 not up yet, forcing it > [ 0.789721] input: AT Translated Set 2 keyboard as /devices/platfo= rm/i8042/serio0/input/input0 > [ 0.792173] e100 0000:01:08.0: eth0: NIC Link is Up 100 Mbps Full = Duplex > [ 0.796023] netconsole: carrier detect appears untrustworthy, wait= ing 4 seconds > [ 0.956500] ata1.00: ATA-6: ST380011A, 8.01, max UDMA/100 > [ 0.956605] ata1.00: 156301488 sectors, multi 16: LBA48=20 > [ 0.972370] ata1.00: configured for UDMA/100 > [ 0.972800] scsi 0:0:0:0: Direct-Access ATA ST380011A = 8.01 PQ: 0 ANSI: 5 > [ 0.973638] sd 0:0:0:0: [sda] 156301488 512-byte logical blocks: (= 80.0 GB/74.5 GiB) > [ 0.973964] sd 0:0:0:0: [sda] Write Protect is off > [ 0.974129] sd 0:0:0:0: [sda] Write cache: enabled, read cache: en= abled, doesn't support DPO or FUA > [ 0.995686] sda: sda1 sda2 sda3 > [ 0.996805] sd 0:0:0:0: [sda] Attached SCSI disk > [ 1.112032] Refined TSC clocksource calibration: 930.314 MHz. > [ 1.112149] Switching to clocksource tsc > [ 4.801225] console [netcon0] enabled > [ 4.801357] netconsole: network logging started > [ 4.801532] rtc_cmos 00:02: setting system clock to 2012-02-20 12:= 55:15 UTC (1329742515) > [ 4.817157] EXT3-fs (sda1): recovery required on readonly filesyst= em > [ 4.817290] EXT3-fs (sda1): write access will be enabled during re= covery > [ 5.283547] kjournald starting. Commit interval 5 seconds > [ 5.283909] EXT3-fs (sda1): recovery complete > [ 5.284026] EXT3-fs (sda1): mounted filesystem with writeback data= mode > [ 5.284171] VFS: Mounted root (ext3 filesystem) readonly on device= 8:1. > [ 5.284359] Freeing unused kernel memory: 284k freed > [ 5.285311] Write protecting the kernel text: 2384k > [ 5.285522] Write protecting the kernel read-only data: 1196k > [ 7.550607] input: Power Button as /devices/LNXSYSTM:00/device:00/= PNP0C0C:00/input/input1 > [ 7.550827] ACPI: Power Button [PBTN] > [ 7.551139] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:0= 0/input/input2 > [ 7.551322] ACPI: Power Button [PWRF] > [ 7.659948] parport_pc 00:0a: reported by Plug and Play ACPI > [ 7.660246] parport0: PC-style at 0x378 (0x778), irq 7, dma 3 [PCS= PP,TRISTATE,COMPAT,ECP,DMA] > [ 7.989627] usbcore: registered new interface driver usbfs > [ 7.990381] usbcore: registered new interface driver hub > [ 7.991881] usbcore: registered new device driver usb > [ 8.062219] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Dr= iver > [ 8.140339] ACPI: PCI Interrupt Link [LNKB] enabled at IRQ 9 > [ 8.148670] uhci_hcd: USB Universal Host Controller Interface driv= er > [ 8.149220] ACPI: PCI Interrupt Link [LNKD] enabled at IRQ 11 > [ 8.149363] uhci_hcd 0000:00:1f.2: UHCI Host Controller > [ 8.149481] uhci_hcd 0000:00:1f.2: new USB bus registered, assigne= d bus number 1 > [ 8.149716] uhci_hcd 0000:00:1f.2: irq 11, io base 0x0000ef40 > [ 8.149910] usb usb1: New USB device found, idVendor=3D1d6b, idPro= duct=3D0001 > [ 8.150031] usb usb1: New USB device strings: Mfr=3D3, Product=3D2= , SerialNumber=3D1 > [ 8.150223] usb usb1: Product: UHCI Host Controller > [ 8.150325] usb usb1: Manufacturer: Linux 3.3.0-rc4 uhci_hcd > [ 8.150434] usb usb1: SerialNumber: 0000:00:1f.2 > [ 8.150793] hub 1-0:1.0: USB hub found > [ 8.150908] hub 1-0:1.0: 2 ports detected > [ 8.151363] ACPI: PCI Interrupt Link [LNKH] enabled at IRQ 10 > [ 8.151504] uhci_hcd 0000:00:1f.4: UHCI Host Controller > [ 8.151622] uhci_hcd 0000:00:1f.4: new USB bus registered, assigne= d bus number 2 > [ 8.151858] uhci_hcd 0000:00:1f.4: irq 10, io base 0x0000ef80 > [ 8.159500] usb usb2: New USB device found, idVendor=3D1d6b, idPro= duct=3D0001 > [ 8.159644] usb usb2: New USB device strings: Mfr=3D3, Product=3D2= , SerialNumber=3D1 > [ 8.159874] usb usb2: Product: UHCI Host Controller > [ 8.159978] usb usb2: Manufacturer: Linux 3.3.0-rc4 uhci_hcd > [ 8.160141] usb usb2: SerialNumber: 0000:00:1f.4 > [ 8.165932] hub 2-0:1.0: USB hub found > [ 8.166086] hub 2-0:1.0: 2 ports detected > [ 9.396043] intel8x0_measure_ac97_clock: measured 52271 usecs (292= 6 samples) > [ 9.396191] intel8x0: clocking to 41159 > [ 10.231275] Adding 1048572k swap on /dev/sda2. Priority:-1 extent= s:1 across:1048572k=20 > [ 10.476088] EXT3-fs (sda1): using internal journal > [ 10.595095] NTFS driver 2.1.30 [Flags: R/W MODULE]. > [ 10.824763] usbcore: registered new interface driver libusual > [ 10.830985] Initializing USB Mass Storage driver... > [ 10.832120] usbcore: registered new interface driver usb-storage > [ 10.832255] USB Mass Storage support registered. > [ 10.885221] smsc47m1: Found SMSC LPC47M10x/LPC47M112/LPC47M13x > [ 10.885384] ACPI Warning: 0x00000804-0x00000804 SystemIO conflicts= with Region \_SB_.PCI0.SBRG.RNT3 1 (20120111/utaddress-251) > [ 10.885622] ACPI: If an ACPI driver is available for this device, = you should use it instead of the native driver > [ 12.766616] EXT4-fs (sda3): mounted filesystem with ordered data m= ode. Opts: (null) > [ 13.138202] NET: Registered protocol family 8 > [ 13.138341] NET: Registered protocol family 20 > [ 15.402941] NET: Registered protocol family 10 > [ 17.837703] RPC: Registered named UNIX socket transport module. > [ 17.837917] RPC: Registered udp transport module. > [ 17.838021] RPC: Registered tcp transport module. > [ 17.838125] RPC: Registered tcp NFSv4.1 backchannel transport modu= le. > [ 17.938275] Registering the id_resolver key type > [ 17.969638] Installing knfsd (copyright (C) 1996 okir@monad.swb.de= ). > [ 18.725603] fuse init (API version 7.18) > [ 20.391759] input: ACPI Virtual Keyboard Device as /devices/virtua= l/input/input3 > [ 20.915381] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state= recovery directory > [ 20.928931] NFSD: starting 90-second grace period > [ 23.179451] lp0: using parport0 (interrupt-driven). > [ 23.192176] ppdev: user-space parallel port driver > [ 23.264048] BUG: unable to handle kernel NULL pointer dereference = at 00000004 > [ 23.264241] IP: [] __neigh_for_each_release+0x7c/0x92 > [ 23.264385] *pde =3D 00000000=20 > [ 23.264493] Oops: 0000 [#1] PREEMPT=20 > [ 23.264616] Modules linked in: ppdev lp uinput fuse nfsd nfs lockd= auth_rpcgss nfs_acl sunrpc ipv6 clip atm ext4 jbd2 adm1025 hwmon_vid h= wmon usb_storage usb_libusual udf crc_itu_t isofs zlib_inflate vfat fat= eeprom ntfs snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm_oss snd_mixer= _oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq= _midi_event snd_seq snd_timer snd_seq_device snd uhci_hcd i2c_i801 ehci= _hcd evdev serio_raw usbcore usb_common soundcore snd_page_alloc parpor= t_pc parport button processor > [ 23.265997]=20 > [ 23.266098] Pid: 0, comm: swapper Not tainted 3.3.0-rc4 #16 = /D815EEA2 =20 > [ 23.266330] EIP: 0060:[] EFLAGS: 00010286 CPU: 0 > [ 23.266438] EIP is at __neigh_for_each_release+0x7c/0x92 > [ 23.266544] EAX: d08f036c EBX: 00000000 ECX: 00000000 EDX: d08edf3= 8 > [ 23.266655] ESI: 00000000 EDI: d08ede2b EBP: cf809f78 ESP: cf809f6= 0 > [ 23.266766] DS: 007b ES: 007b FS: 0000 GS: 00e0 SS: 0068 > [ 23.266875] Process swapper (pid: 0, ti=3Dcf808000 task=3Dc1388460= task.ti=3Dc1380000) > [ 23.267065] Stack: > [ 23.267163] cf97d8a0 cf97d8a0 d08edf38 00000100 c141bc80 d08ede2b= cf809f80 d08ede47 > [ 23.267455] cf809fc4 c1022309 cf809fac c118a00d cf809fac c1030e0e= cd5dc390 00000001 > [ 23.267756] c141c68c c141c48c 00000000 cf809fb0 cf809fb0 cf809fb0= c141bb5c 00000001 > [ 23.268004] Call Trace: > [ 23.268004] [] ? clip_seq_show+0x3b/0x3b [clip] > [ 23.268004] [] ? clip_seq_start+0x21/0x21 [clip] > [ 23.268004] [] idle_timer_check+0x1c/0x4a [clip] > [ 23.268004] [] run_timer_softirq+0x140/0x1de > [ 23.268004] [] ? scsi_softirq_done+0xbf/0xc7 > [ 23.268004] [] ? put_cred_rcu+0x6f/0x76 > [ 23.268004] [] __do_softirq+0x5f/0xe8 > [ 23.268004] [] ? send_remote_softirq+0x18/0x18 > [ 23.268004] =20 > [ 23.268004] [] ? irq_exit+0x34/0x8b > [ 23.268004] [] ? smp_apic_timer_interrupt+0x6e/0x79 > [ 23.268004] [] ? apic_timer_interrupt+0x31/0x38 > [ 23.268004] [] ? default_idle+0x29/0x3e > [ 23.268004] [] ? cpu_idle+0x73/0xa6 > [ 23.268004] [] ? rest_init+0x77/0x79 > [ 23.268004] [] ? start_kernel+0x296/0x29c > [ 23.268004] [] ? obsolete_checksetup+0x8b/0x8b > [ 23.268004] [] ? i386_start_kernel+0x44/0x46 > [ 23.268004] Code: 14 8b 52 08 f6 c2 08 74 0b 89 45 e8 e8 31 ca 06 = 00 8b 45 e8 85 c0 74 07 89 f8 e8 5c ff ff ff 8b 3b 85 ff 75 b2 89 f3 8b= 75 ec 43 <8b> 4e 04 b8 01 00 00 00 d3 e0 39 c3 7c 8c 83 c4 0c 5b 5e 5f= 5d=20 > [ 23.268004] EIP: [] __neigh_for_each_release+0x7c/0x92 S= S:ESP 0068:cf809f60 > [ 23.268004] CR2: 0000000000000004 > [ 23.271899] ---[ end trace f4b1cbf2fb401c6c ]--- > [ 23.272011] Kernel panic - not syncing: Fatal exception in interru= pt >=20 Coming from 32092ecf0644=20 (atm: clip: Use device neigh support on top of "arp_tbl".) David forgot to remove clip_tbl for good But I dont know enough this code to know if the following patch is the way to fix this. (and __neigh_for_each_release() can also be deleted if no users left in tree) net/atm/clip.c | 53 ----------------------------------------------- 1 file changed, 53 deletions(-) diff --git a/net/atm/clip.c b/net/atm/clip.c index c12c258..ca780ff 100644 --- a/net/atm/clip.c +++ b/net/atm/clip.c @@ -46,8 +46,6 @@ =20 static struct net_device *clip_devs; static struct atm_vcc *atmarpd; -static struct neigh_table clip_tbl; -static struct timer_list idle_timer; =20 static int to_atmarpd(enum atmarp_ctrl_type type, int itf, __be32 ip) { @@ -117,49 +115,6 @@ out: netif_tx_unlock_bh(entry->neigh->dev); } =20 -/* The neighbour entry n->lock is held. */ -static int neigh_check_cb(struct neighbour *n) -{ - struct atmarp_entry *entry =3D neighbour_priv(n); - struct clip_vcc *cv; - - for (cv =3D entry->vccs; cv; cv =3D cv->next) { - unsigned long exp =3D cv->last_use + cv->idle_timeout; - - if (cv->idle_timeout && time_after(jiffies, exp)) { - pr_debug("releasing vcc %p->%p of entry %p\n", - cv, cv->vcc, entry); - vcc_release_async(cv->vcc, -ETIMEDOUT); - } - } - - if (entry->vccs || time_before(jiffies, entry->expires)) - return 0; - - if (atomic_read(&n->refcnt) > 1) { - struct sk_buff *skb; - - pr_debug("destruction postponed with ref %d\n", - atomic_read(&n->refcnt)); - - while ((skb =3D skb_dequeue(&n->arp_queue)) !=3D NULL) - dev_kfree_skb(skb); - - return 0; - } - - pr_debug("expired neigh %p\n", n); - return 1; -} - -static void idle_timer_check(unsigned long dummy) -{ - write_lock(&clip_tbl.lock); - __neigh_for_each_release(&clip_tbl, neigh_check_cb); - mod_timer(&idle_timer, jiffies + CLIP_CHECK_INTERVAL * HZ); - write_unlock(&clip_tbl.lock); -} - static int clip_arp_rcv(struct sk_buff *skb) { struct atm_vcc *vcc; @@ -622,8 +577,6 @@ static int atm_init_atmarp(struct atm_vcc *vcc) return -EADDRINUSE; } =20 - mod_timer(&idle_timer, jiffies + CLIP_CHECK_INTERVAL * HZ); - atmarpd =3D vcc; set_bit(ATM_VF_META, &vcc->flags); set_bit(ATM_VF_READY, &vcc->flags); @@ -871,7 +824,6 @@ static int __init atm_clip_init(void) register_netdevice_notifier(&clip_dev_notifier); register_inetaddr_notifier(&clip_inet_notifier); =20 - setup_timer(&idle_timer, idle_timer_check, 0); =20 #ifdef CONFIG_PROC_FS { @@ -898,11 +850,6 @@ static void atm_clip_exit_noproc(void) =20 deregister_atm_ioctl(&clip_ioctl_ops); =20 - /* First, stop the idle timer, so it stops banging - * on the table. - */ - del_timer_sync(&idle_timer); - dev =3D clip_devs; while (dev) { next =3D PRIV(dev)->next;