I am having a problem with my network. I am using a V4FX12 running linux 2.6.21 with the TEMAC. I am running the PPC at 300 MHz and the TEMAC is configured for DMA and DRE on the Xmit and the Recv. I have tried varying the FIFO depth and enabling/disabling the checksum offloading. All produce the error below when under heavy network traffic (specifically sending data from the PPC). Has anybody seen this? It seems like I am overflowing some memory, but I am not sure what/where to increase it.
Thanks, Glenn [ 484.696738] Oops: kernel access of bad area, sig: 11 [#1] [ 484.761286] NIP: c00e1ef4 LR: c00cfec0 CTR: c00cfe34 [ 484.820650] REGS: c0483b10 TRAP: 0300 Not tainted (2.6.21) [ 484.889378] MSR: 00029030 <EE,ME,IR,DR> CR: 93005999 XER: e0000000 [ 484.965410] DAR: bb857caf, DSISR: 00000000 [ 485.014365] TASK = c0648b60[129] 'rcS' THREAD: c0482000 [ 485.074765] GPR00: c04fdfb8 c0483bc0 c0648b60 bb857c2b c04fd9a0 c0483bcc 04000000 ff107ac0 [ 485.174747] GPR08: 0000000f c04fdfb8 c04d2478 00010001 00648d10 1003c2e0 00000000 00000001 [ 485.274732] GPR16: 00000003 c0483ed8 00004fd8 000005b4 000005b4 00000000 00000000 0001679c [ 485.374716] GPR24: 7ff8b398 3002afe0 0000000f c04d2000 c04d23b8 c06bbe60 00000003 c04d2320 [ 485.476784] NIP [c00e1ef4] kfree_skb+0x8/0x3c [ 485.528858] LR [c00cfec0] SgSendHandlerBH+0x8c/0x1cc [ 485.588223] Call Trace: [ 485.617389] [c0483bc0] [c00cfec0] SgSendHandlerBH+0x8c/0x1cc (unreliable) [ 485.698628] [c0483bf0] [c0019218] tasklet_action+0x90/0xd4 [ 485.764241] [c0483c00] [c0018ebc] __do_softirq+0x64/0xd0 [ 485.827772] [c0483c20] [c00064a8] do_softirq+0x40/0x58 [ 485.889221] [c0483c30] [c0018f74] irq_exit+0x38/0x48 [ 485.948586] [c0483c40] [c0006450] do_IRQ+0x88/0xa0 [ 486.005868] [c0483c50] [c00032d8] ret_from_except+0x0/0x18 [ 486.071483] [c0483d10] [c0483d00] 0xc0483d00 [ 486.122516] [c0483d20] [c00e17d4] __alloc_skb+0x48/0x11c [ 486.186048] [c0483d40] [c0109218] tcp_sendmsg+0x1ac/0xc40 [ 486.250621] [c0483db0] [c0126b58] inet_sendmsg+0x60/0x74 [ 486.314152] [c0483dd0] [c00dcf34] sock_aio_write+0xe0/0xfc [ 486.379765] [c0483e30] [c0050910] do_sync_write+0xb8/0x10c [ 486.445381] [c0483ef0] [c0050a40] vfs_write+0xdc/0x10c [ 486.506829] [c0483f10] [c0050b48] sys_write+0x4c/0x8c [ 486.567236] [c0483f40] [c0002c90] ret_from_syscall+0x0/0x3c [ 486.633888] Instruction dump: [ 486.669300] 0f000000 7fe3fb78 7d6803a6 4e800021 80010014 7fe3fb78 7c0803a6 bbc10008 [ 486.761992] 38210010 4bfffe78 2c030000 4d820020 <80030084> 39230084 2f800001 409e0008 [ 486.858162] Kernel panic - not syncing: Aiee, killing interrupt handler! [ 486.938382] Rebooting in 180 seconds.. _______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
