NFS client kernel panics on Red Hat Enterprise Linux 5 with kernel crash "RIP: [<ffffffff8022b14b>] pskb_copy"
Issue
- Kernel panic on NFS client system, and NFS server goes offline, then comes back.
-
Bnx2 Kernel panic with "RIP: [<ffffffff8022b14b>] pskb_copy" :
ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready bnx2: eth1 NIC Copper Link is Up, 1000 Mbps full duplex bonding: bond0: link status definitely up for interface eth1. bond0: no IPv6 routers present general protection fault: 0000 [1] SMP last sysfs file: /devices/pci0000:00/0000:00:02.0/0000:06:00.0/0000:07:00.0/0000:08:00.0/0000:09:00.0/irq CPU 0 Modules linked in: mptctl mptbase ipmi_devintf ipmi_si ipmi_msghandler dell_rbu nfs fscache nfs_acl mvfs(U) autofs4 hidp l2cap bluetooth lockd sunrpc bonding ipv6 xfrm_nalgo crypto_api dm_multipath scsi_dh video backlight sbs power_meter hwmon i2c_ec i2c_core dell_wmi wmi button battery asus_acpi acpi_memhotplug ac parport_pc lp parport sr_mod joydev usb_storage ide_cd i5000_edac serio_raw edac_mc bnx2 sg cdrom pcspkr dm_raid45 dm_message dm_region_hash dm_mem_cache dm_snapshot dm_zero dm_mirror dm_log dm_mod ata_piix libata shpchp megaraid_sas sd_mod scsi_mod ext3 jbd uhci_hcd ohci_hcd ehci_hcd Pid: 0, comm: swapper Tainted: G 2.6.18-194.8.1.el5 #1 RIP: 0010:[<ffffffff8022b14b>] [<ffffffff8022b14b>] pskb_copy+0x133/0x1b0 RSP: 0018:ffffffff80446e40 EFLAGS: 00010282 RAX: ffff81036f7ab510 RBX: ffff8102f79f2380 RCX: ffff810408f2f520 RDX: 00020794031804f4 RSI: ffff81036f7ab520 RDI: 0000000000000001 RBP: ffff81009dcba2c0 R08: 0000000055ee1474 R09: 0000000000000000 R10: ffff8102f79f2380 R11: 00000000000000c8 R12: 0000000000000220 R13: ffff81009dcba2c0 R14: ffff8103ff2f0d80 R15: ffffffff80258e86 FS: 0000000000000000(0000) GS:ffffffff803ca000(0000) knlGS:0000000000000000 CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b CR2: 00002aaaaaab0000 CR3: 000000002d3ec000 CR4: 00000000000006e0 Process swapper (pid: 0, threadinfo ffffffff803fa000, task ffffffff80308b60) Stack: 0000000100000001 ffff8103ff2f0d80 0000000000000001 ffffffff80021958 ffff810362e52c80 0000000000000000 0000000000000000 ffff8103ff2f0d80 ffff81009dcba2c0 00000000ffffff8f ffff81009dcba318 ffff8103ff2f0d80 Call Trace: <IRQ> [<ffffffff80021958>] tcp_transmit_skb+0x73/0x667 [<ffffffff80258e86>] tcp_write_timer+0x0/0x691 [<ffffffff8025794f>] tcp_retransmit_skb+0x51a/0x615 [<ffffffff8008dbae>] rebalance_tick+0x183/0x3cb [<ffffffff80258e86>] tcp_write_timer+0x0/0x691 [<ffffffff802592f3>] tcp_write_timer+0x46d/0x691 [<ffffffff80097aaa>] run_timer_softirq+0x193/0x241 [<ffffffff800123b4>] __do_softirq+0x89/0x133 [<ffffffff8005e2fc>] call_softirq+0x1c/0x28 [<ffffffff8006cb8e>] do_softirq+0x2c/0x85 [<ffffffff80056f62>] mwait_idle+0x0/0x4a [<ffffffff8005dc8e>] apic_timer_interrupt+0x66/0x6c <EOI> [<ffffffff80056f98>] mwait_idle+0x36/0x4a [<ffffffff80049150>] cpu_idle+0x95/0xb8 [<ffffffff80405807>] start_kernel+0x220/0x225 [<ffffffff8040522f>] _sinittext+0x22f/0x236
Environment
- NFS client
- Red Hat Enterprise Linux 5
- kernel-2.6.18-194.X or 2.6.18-164.10.1.el5
- Networking details which may/may not be relevant
- Bonding
- bnx2
- Diskless NFS root
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