2013/5/20 Andrew Deason <[email protected]>: > On Mon, 20 May 2013 20:10:07 +0300 > Markus Suvanto <[email protected]> wrote: > >> Kernel 3.9.2 and openafs 1.6.3pre2 >> >> 489.338107] BUG: unable to handle kernel NULL pointer dereference at >> (null) >> [ 489.338490] IP: [< (null)>] (null) >> [ 489.338692] PGD 37b9b067 PUD 37a0c067 PMD 0 >> [ 489.339009] Oops: 0010 [#1] SMP >> .... > > Although I assume this is indeed as easy to reproduce as you say, can > you post more about what is logged? I assumed you got a stack trace, or > some kind of indication as to where we are.
Kernel recompiles using CONFIG_KALLSYMS=y and here is trace. ay 20 23:36:45 kvm1 kernel: Starting AFS cache scan...found 0 non-empty cache files (0%). May 20 23:36:45 kvm1 kernel: NET: Registered protocol family 10 May 20 23:37:04 kvm1 kernel: PGD 116a76067 PUD 114fc2067 PMD 0 May 20 23:37:04 kvm1 kernel: Oops: 0010 [#1] SMP May 20 23:37:04 kvm1 kernel: Modules linked in: ipv6 libafs(PO) af_packet sr_mod cdrom ata_generic joydev mousedev hid_generic usbhid pata_acpi crc32c_intel snd_intel8x0 snd_ac97_codec uhci_hcd ac97_bus ehci_hcd snd_pcm intel_agp snd_page_alloc ppdev evdev psmouse microcode atkbd snd_timer pcspkr usbcore intel_gtt i2c_piix4 serio_raw virtio_net firmware_class snd i2c_core usb_common agpgart soundcore ata_piix parport_pc virtio_balloon rtc_cmos 8250 parport floppy serial_core processor thermal_sys hwmon button unix btrfs xor zlib_deflate raid6_pq libcrc32c crc32c ext4 mbcache jbd2 crc16 virtio_pci virtio_blk virtio_ring virtio ahci libahci libata sd_mod scsi_mod crc_t10dif fbcon font bitblit softcursor fb fbdev May 20 23:37:04 kvm1 kernel: CPU 4 May 20 23:37:04 kvm1 kernel: Pid: 1599, comm: ld Tainted: P O 3.9.2 #8 Bochs Bochs May 20 23:37:04 kvm1 kernel: RIP: 0010:[<0000000000000000>] [< (null)>] (null) May 20 23:37:04 kvm1 kernel: RSP: 0018:ffff88011623ba50 EFLAGS: 00010246 May 20 23:37:04 kvm1 kernel: RAX: ffffffff813401c0 RBX: ffff88011623bad8 RCX: 000000000001461e May 20 23:37:04 kvm1 kernel: RDX: 0000000000014681 RSI: ffffea0004375840 RDI: 0000000000000000 May 20 23:37:04 kvm1 kernel: RBP: ffffea0004375880 R08: ffffea0004375880 R09: 0000000000013746 May 20 23:37:04 kvm1 kernel: R10: 000000000000095e R11: 0000000000000000 R12: ffffea0004375840 May 20 23:37:04 kvm1 kernel: R13: ffff88011716f078 R14: 0000000000000001 R15: 0000000000000000 May 20 23:37:04 kvm1 kernel: FS: 00007f4404ccc700(0000) GS:ffff88011fc80000(0000) knlGS:0000000000000000 May 20 23:37:04 kvm1 kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 May 20 23:37:04 kvm1 kernel: CR2: 0000000000000000 CR3: 00000001191a4000 CR4: 00000000000007e0 May 20 23:37:04 kvm1 kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 May 20 23:37:04 kvm1 kernel: DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 May 20 23:37:04 kvm1 kernel: Process ld (pid: 1599, threadinfo ffff88011623a000, task ffff88011215d280) May 20 23:37:04 kvm1 kernel: Stack: May 20 23:37:04 kvm1 kernel: ffffffffa0807a32 ffff880119a01300 0000000018608b40 ffffc90001478800 May 20 23:37:04 kvm1 kernel: ffffea0004375880 0000000000001000 ffff880118608b40 ffffc90001478800 May 20 23:37:04 kvm1 kernel: ffff880119a01300 0000000000000001 ffffffffa08082c8 ffff88011fff8c00 May 20 23:37:04 kvm1 kernel: Call Trace: May 20 23:37:04 kvm1 kernel: [<ffffffffa0807a32>] ? afs_linux_read_cache.isra.20+0x182/0x340 [libafs] May 20 23:37:04 kvm1 kernel: [<ffffffffa08082c8>] ? afs_linux_fillpage+0x6d8/0x9b0 [libafs] May 20 23:37:04 kvm1 kernel: [<ffffffffa0796d95>] ? afs_InitReq+0x85/0xf0 [libafs] May 20 23:37:04 kvm1 kernel: [<ffffffffa0809472>] ? afs_linux_readpage+0x192/0x490 [libafs] May 20 23:37:04 kvm1 kernel: [<ffffffff810b1db4>] ? add_to_page_cache_locked+0x84/0xe0 May 20 23:37:04 kvm1 kernel: [<ffffffff810b2f64>] ? generic_file_aio_read+0x204/0x6e0 May 20 23:37:04 kvm1 kernel: [<ffffffffa0804fa2>] ? afs_linux_aio_read+0xf2/0x290 [libafs] May 20 23:37:04 kvm1 kernel: [<ffffffff810d2e6e>] ? handle_pte_fault+0xae/0x9a0 May 20 23:37:04 kvm1 kernel: [<ffffffff81100494>] ? do_sync_read+0x94/0xd0 May 20 23:37:04 kvm1 kernel: [<ffffffff81100c9d>] ? vfs_read+0x16d/0x190 May 20 23:37:04 kvm1 kernel: [<ffffffff81100e70>] ? sys_read+0x50/0xa0 May 20 23:37:04 kvm1 kernel: [<ffffffff8132dea9>] ? system_call_fastpath+0x16/0x1b May 20 23:37:04 kvm1 kernel: Code: Bad RIP value. May 20 23:37:04 kvm1 kernel: RSP <ffff88011623ba50> May 20 23:37:04 kvm1 kernel: CR2: 0000000000000000 May 20 23:37:04 kvm1 kernel: ---[ end trace cd4f184e9e79af88 ]--- -Markus > > -- > Andrew Deason > [email protected] > > _______________________________________________ > OpenAFS-devel mailing list > [email protected] > https://lists.openafs.org/mailman/listinfo/openafs-devel _______________________________________________ OpenAFS-devel mailing list [email protected] https://lists.openafs.org/mailman/listinfo/openafs-devel
