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Old 12-17-2008, 09:40 PM
Paul Logasa Bogen II
 
Default Bug#465169: linux-image-2.6.22-3-686: NFS causing a Null Pointer Oops that locks the machine up

No it doesn't.
plb

Moritz Muehlenhoff wrote:

On Tue, Feb 12, 2008 at 01:54:38AM +0100, maximilian attems wrote:


On Sun, 10 Feb 2008, Paul Logasa Bogen II wrote:



Package: linux-image-2.6.22-3-686
Version: 2.6.22-6
Severity: normal





The machine will completely freeze up and the kern.log shows the following:

Feb 9 22:23:29 twang kernel: BUG: unable to handle kernel NULL pointer dereference at virtual address 0000006e
Feb 9 22:23:29 twang kernel: printing eip:
Feb 9 22:23:29 twang kernel: c017c070
Feb 9 22:23:29 twang kernel: *pde = 00000000
Feb 9 22:23:29 twang kernel: Oops: 0000 [#1]
Feb 9 22:23:29 twang kernel: SMP
Feb 9 22:23:29 twang kernel: Modules linked in: nfs lockd nfs_acl sunrpc autofs4 thermal fan button processor ac battery ipv6 dm_snapshot dm_mirror dm_mod loop ide_cd cdrom generic tsdev intel_rng megaraid_mbox megaraid_mm e1000 piix ide_core uhci_hcd usbcore ata_generic parport_pc parport serio_raw floppy libata iTCO_wdt psmouse rtc sg e7xxx_edac edac_mc pcspkr ext3 jbd mbcache sd_mod mptspi mptscsih mptbase scsi_transport_spi scsi_mod shpchp pci_hotplug evdev

Feb 9 22:23:29 twang kernel: CPU: 1
Feb 9 22:23:29 twang kernel: EIP: 0060:[<c017c070>] Not tainted VLI
Feb 9 22:23:29 twang kernel: EFLAGS: 00010206 (2.6.22-3-686 #1)
Feb 9 22:23:29 twang kernel: EIP is at graft_tree+0x22/0xc9
Feb 9 22:23:29 twang kernel: eax: f19be9d8 ebx: d437bf2c ecx: 00000000 edx: d437bf2c
Feb 9 22:23:29 twang kernel: esi: ffffffec edi: ef14c3c0 ebp: 00000000 esp: d437bdf8
Feb 9 22:23:29 twang kernel: ds: 007b es: 007b fs: 00d8 gs: 0033 ss: 0068
Feb 9 22:23:29 twang kernel: Process mount.nfs (pid: 31709, ti=d437a000 task=c5555070 task.ti=d437a000)
Feb 9 22:23:29 twang kernel: Stack: ef14c3c0 d437bf2c cf618003 c017c3af 00000000 c03297c0 00000000 cf618003
Feb 9 22:23:29 twang kernel: 00000000 c017d399 00000000 c7458000 ef14c3c0 cf618000 cf376000 0038b025
Feb 9 22:23:29 twang kernel: 00000000 d437be70 00000000 d437be78 0100007f 00000000 f150b800 c027d5cf
Feb 9 22:23:29 twang kernel: Call Trace:

Feb 9 22:23:29 twang kernel: [<c017c3af>] do_add_mount+0x86/0xfb
Feb 9 22:23:29 twang kernel: [<c017d399>] do_mount+0x647/0x69a
Feb 9 22:23:29 twang kernel: [<c027d5cf>] ip4_datagram_connect+0x2bf/0x314
Feb 9 22:23:29 twang kernel: [<c023f820>] move_addr_to_user+0x39/0x50
Feb 9 22:23:29 twang kernel: [<c011aeee>] do_page_fault+0x2d0/0x57e
Feb 9 22:23:29 twang kernel: [<c02a51fa>] error_code+0x72/0x78
Feb 9 22:23:29 twang kernel: [<c02a00d8>] atm_dev_register+0x26/0x1d4
Feb 9 22:23:29 twang kernel: [<c017bed2>] copy_mount_options+0x90/0x109
Feb 9 22:23:29 twang kernel: [<c017d463>] sys_mount+0x77/0xb3
Feb 9 22:23:29 twang kernel: [<c0103d0e>] sysenter_past_esp+0x6b/0xa1
Feb 9 22:23:29 twang kernel: =======================
Feb 9 22:23:29 twang kernel: Code: c4 10 89 d0 5b 5e 5f 5d c3 57 89 c7 56 be ea ff ff ff 53 8b 40 14 89 d3 83 78 30 00 0f 88 aa 00 00 00 8b 02 66 be ec ff 8b 48 0c <0f> b7 41 6e 25 00 f0 00 00 3d 00 40 00 00 8b 47 10 0f 94 c2 8b
Feb 9 22:23:29 twang kernel: EIP: [<c017c070>] graft_tree+0x22/0xc9 SS:ESP 0068:d437bdf8


please try 2.6.24-4 from unstable beside an important security fix
it should have some nfs fixes, thanks for feedback.



Does this error still occur with more recent kernel versions?

Cheers,
Moritz










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