Bug#566312: BUG: unable to handle kernel paging request, in skb_copy_bits
Package: linux-image-2.6.26-2-686-bigmem
Version: 2.6.26-19lenny2
Severity: normal
One of our i386 KVM VMs has been crashing every couple of days, with the
following oops output.
linux-image-2.6.30-2-686-bigmem=2.6.30-8 (from squeeze) made no difference,
but linux-image-2.6.32-trunk-686-bigmem=2.6.32-5 from unstable has gone
without a crash for over a week now.
BUG: unable to handle kernel paging request at fffb8000
IP: [<c0263c36>] skb_copy_bits+0x55/0x20d
Oops: 0002 [#1] SMP
Modules linked in: ipt_LOG xt_limit ipt_REJECT nf_conntrack_ipv4 xt_state nf_conntrack_ftp nf_conntrack xt_tcpudp iptable_filter ip_tables x_tables nfsd auth_rpcgss exportfs nfs lockd nfs_acl sunrpc ipv6 loop evdev virtio_balloon virtio_net psmouse pcspkr i2c_piix4 i2c_core button ext3 jbd mbcache virtio_blk ide_cd_mod cdrom ide_pci_generic floppy virtio_pci virtio_ring virtio uhci_hcd usbcore piix ide_core ata_generic libata scsi_mod dock thermal processor fan thermal_sys [last unloaded: scsi_wait_scan]
Pid: 24440, comm: netstats-script Not tainted (2.6.26-2-686-bigmem #1)
EIP: 0060:[<c0263c36>] EFLAGS: 00010282 CPU: 0
EIP is at skb_copy_bits+0x55/0x20d
EAX: 00000524 EBX: f40cfc04 ECX: 00000149 EDX: f6dbd080
ESI: f58a68d6 EDI: fffb8000 EBP: fffb8000 ESP: f40cfb8c
DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
Process netstats-script (pid: 24440, ti=f40ce000 task=f44e3b40 task.ti=f40ce000)
Stack: 00000000 00000084 f6dbd080 000005dc 000005a8 00000008 f40cfc04 00000524 00001000 fffb8000 f8baf02f 00000524 00000000 00001000 f8baeeb7 f40cfc04 f585408c f7fff6e4 0000007c 0000107c f40cfc04 000005a0 f5993800 f8bb04b1
Call Trace:
[<f8baf02f>] xdr_skb_read_bits+0x1c/0x30 [sunrpc]
[<f8baeeb7>] xdr_partial_copy_from_skb+0x11f/0x179 [sunrpc]
[<f8bb04b1>] xs_tcp_data_recv+0x238/0x3c6 [sunrpc]
[<f8baf013>] xdr_skb_read_bits+0x0/0x30 [sunrpc]
[<c028b446>] tcp_read_sock+0xa2/0x1ef
[<f8bb0279>] xs_tcp_data_recv+0x0/0x3c6 [sunrpc]
[<f8bb0f15>] xs_tcp_data_ready+0x52/0x62 [sunrpc]
[<c0130b3b>] mod_timer+0x19/0x36
[<c0261337>] sk_reset_timer+0xc/0x16
[<c0293b10>] tcp_rcv_established+0x3b3/0x637
[<c0298b80>] tcp_v4_do_rcv+0x262/0x3e8
[<c029a866>] tcp_v4_rcv+0x545/0x597
[<c0283167>] ip_local_deliver_finish+0xe8/0x183
[<c0283062>] ip_rcv_finish+0x286/0x2a3
[<c0268819>] netif_receive_skb+0x31c/0x349
[<f88fa9f3>] virtnet_poll+0x167/0x258 [virtio_net]
[<c026a733>] net_rx_action+0x9c/0x177
[<c012d125>] __do_softirq+0x66/0xd3
[<c012d1d7>] do_softirq+0x45/0x53
[<c012d48e>] irq_exit+0x35/0x67
[<c010afd7>] do_IRQ+0x52/0x63
[<c01092a7>] common_interrupt+0x23/0x28
[<c0119e25>] kvm_leave_lazy_mmu+0x29/0x31
[<c016a091>] unmap_vmas+0x57a/0x7c4
[<c017e27e>] do_sync_read+0xbf/0xfe
[<c016e306>] exit_mmap+0x65/0xd1
[<c012727e>] mmput+0x20/0x7e
[<c0182314>] flush_old_exec+0x3e5/0x677
[<c0181a02>] kernel_read+0x32/0x43
[<c01a5138>] load_elf_binary+0x310/0x108a
[<c0168394>] page_address+0x73/0x93
[<c016852e>] kmap_high+0x1c/0x1a2
[<c0168394>] page_address+0x73/0x93
[<c0181726>] copy_strings+0x169/0x173
[<c01817eb>] search_binary_handler+0x8f/0x1a4
[<c0182926>] do_execve+0x138/0x1c6
[<c010713b>] sys_execve+0x2a/0x4a
[<c01088ce>] syscall_call+0x7/0xb
[<c02c0000>] xenfb_probe+0x221/0x35b
=======================
Code: d0 2b 44 24 04 89 54 24 10 85 c0 7e 39 39 44 24 2c 89 ef 0f 4e 44 24 2c 8b 54 24 08 8b 74 24 04 89 c1 c1 e9 02 03 b2 a4 00 00 00 <f3> a5 89 c1 83 e1 03 74 02 f3 a4 29 44 24 2c 0f 84 92 01 00 00
EIP: [<c0263c36>] skb_copy_bits+0x55/0x20d SS:ESP 0068:f40cfb8c
Kernel panic - not syncing: Fatal exception in interrupt
-- Package-specific info:
-- System Information:
Debian Release: 5.0.3
APT prefers stable
APT policy: (500, 'stable')
Architecture: i386 (i686)
Kernel: Linux 2.6.32-trunk-686-bigmem (SMP w/1 CPU core)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages linux-image-2.6.26-2-686-bigmem depends on:
ii debconf [debconf-2.0] 1.5.24 Debian configuration management sy
ii initramfs-tools [linux-initra 0.92o tools for generating an initramfs
ii module-init-tools 3.4-1 tools for managing Linux kernel mo
Versions of packages linux-image-2.6.26-2-686-bigmem recommends:
ii libc6-i686 2.7-18 GNU C Library: Shared libraries [i
Versions of packages linux-image-2.6.26-2-686-bigmem suggests:
ii grub 0.97-47lenny2 GRand Unified Bootloader (Legacy v
pn linux-doc-2.6.26 <none> (no description available)
-- debconf information:
linux-image-2.6.26-2-686-bigmem/preinst/overwriting-modules-2.6.26-2-686-bigmem: true
shared/kernel-image/really-run-bootloader: true
linux-image-2.6.26-2-686-bigmem/preinst/lilo-has-ramdisk:
linux-image-2.6.26-2-686-bigmem/postinst/bootloader-test-error-2.6.26-2-686-bigmem:
linux-image-2.6.26-2-686-bigmem/postinst/depmod-error-2.6.26-2-686-bigmem: false
linux-image-2.6.26-2-686-bigmem/preinst/initrd-2.6.26-2-686-bigmem:
linux-image-2.6.26-2-686-bigmem/preinst/abort-overwrite-2.6.26-2-686-bigmem:
linux-image-2.6.26-2-686-bigmem/preinst/bootloader-initrd-2.6.26-2-686-bigmem: true
linux-image-2.6.26-2-686-bigmem/postinst/depmod-error-initrd-2.6.26-2-686-bigmem: false
linux-image-2.6.26-2-686-bigmem/postinst/create-kimage-link-2.6.26-2-686-bigmem: true
linux-image-2.6.26-2-686-bigmem/preinst/lilo-initrd-2.6.26-2-686-bigmem: true
linux-image-2.6.26-2-686-bigmem/prerm/would-invalidate-boot-loader-2.6.26-2-686-bigmem: true
linux-image-2.6.26-2-686-bigmem/preinst/failed-to-move-modules-2.6.26-2-686-bigmem:
linux-image-2.6.26-2-686-bigmem/prerm/removing-running-kernel-2.6.26-2-686-bigmem: true
linux-image-2.6.26-2-686-bigmem/postinst/old-dir-initrd-link-2.6.26-2-686-bigmem: true
linux-image-2.6.26-2-686-bigmem/preinst/elilo-initrd-2.6.26-2-686-bigmem: true
linux-image-2.6.26-2-686-bigmem/preinst/abort-install-2.6.26-2-686-bigmem:
linux-image-2.6.26-2-686-bigmem/postinst/old-initrd-link-2.6.26-2-686-bigmem: true
linux-image-2.6.26-2-686-bigmem/postinst/old-system-map-link-2.6.26-2-686-bigmem: true
linux-image-2.6.26-2-686-bigmem/postinst/bootloader-error-2.6.26-2-686-bigmem:
linux-image-2.6.26-2-686-bigmem/postinst/kimage-is-a-directory:
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