[openib-general] IPoIB oops on path record completion

[Hal Rosenstock]

On Wed, 2004-12-15 at 16:44, Roland Dreier wrote:
> I've committed a few fixes to IPoIB.  Please let me know if you still
> see issues with the latest code.

Still get oops on ping -b immediately after bringing up ib0 on the IP
subnet :-(

Dec 15 17:59:45 localhost kernel: Unable to handle kernel NULL pointer dereference at virtual address 0000000b
Dec 15 17:59:45 localhost kernel:  printing eip:
Dec 15 17:59:45 localhost kernel: d09a5900
Dec 15 17:59:45 localhost kernel: *pde = 0ba0e067
Dec 15 17:59:45 localhost kernel: *pte = 00000000
Dec 15 17:59:45 localhost kernel: Oops: 0000 [#1]
Dec 15 17:59:45 localhost kernel: Modules linked in: ib_ipoib ib_sa ib_mthca ib_mad ib_core loop ide_cd cdrom lp ipv6 autofs parport_pc parport uhci_hcd ehci_hcd ohci_hcd eepro100 mii evdev usbcore
Dec 15 17:59:45 localhost kernel: CPU:    0
Dec 15 17:59:45 localhost kernel: EIP:    0060:[<d09a5900>]    Not tainted VLI
Dec 15 17:59:45 localhost kernel: EFLAGS: 00010203   (2.6.9) 
Dec 15 17:59:45 localhost kernel: EIP is at path_rec_completion+0x2a0/0x450 [ib_ipoib]
Dec 15 17:59:45 localhost kernel: eax: 0000000b   ebx: 00000000   ecx: c3cb5e14   edx: 0000000b
Dec 15 17:59:45 localhost kernel: esi: 00000000   edi: cff66a60   ebp: ce175a80   esp: c3cb5dac
Dec 15 17:59:45 localhost kernel: ds: 007b   es: 007b   ss: 0068
Dec 15 17:59:45 localhost kernel: Process ib_mad1 (pid: 25367, threadinfo=c3cb4000 task=c306f420)
Dec 15 17:59:45 localhost kernel: Stack: c1d2c800 c1d2cc80 00000001 c6b22420 00000087 00000001 c3cb5e1c c0108cd4 
Dec 15 17:59:45 localhost kernel:        00000282 00000000 c3cb5e1c c03a3a80 c03a3a80 00000005 c6b22420 c0109304 
Dec 15 17:59:45 localhost kernel:        00000005 00000282 c128aa00 0000000a 00000286 00000082 d0944f00 00000246 
Dec 15 17:59:45 localhost kernel: Call Trace:
Dec 15 17:59:45 localhost kernel:  [<c0108cd4>] handle_IRQ_event+0x34/0x70
Dec 15 17:59:45 localhost kernel:  [<c0109304>] do_IRQ+0x194/0x350
Dec 15 17:59:45 localhost kernel:  [<d0942d1a>] ib_sa_path_rec_callback+0x5a/0x90 [ib_sa]
Dec 15 17:59:45 localhost kernel:  [<d08d2d3b>] ib_mad_send_done_handler+0x13b/0x230 [ib_mad]
Dec 15 17:59:45 localhost kernel:  [<d094326b>] send_handler+0x10b/0x350 [ib_sa]
Dec 15 17:59:45 localhost kernel:  [<c02f6336>] schedule+0x306/0x5c0
Dec 15 17:59:45 localhost kernel:  [<d08d3c13>] timeout_sends+0x113/0x2f0 [ib_mad]
Dec 15 17:59:45 localhost kernel:  [<d08d3b00>] timeout_sends+0x0/0x2f0 [ib_mad]
Dec 15 17:59:45 localhost kernel:  [<c01337c1>] worker_thread+0x251/0x470
Dec 15 17:59:45 localhost kernel:  [<c0117b90>] default_wake_function+0x0/0x20
Dec 15 17:59:45 localhost kernel:  [<c0117b90>] default_wake_function+0x0/0x20
Dec 15 17:59:45 localhost kernel:  [<c0133570>] worker_thread+0x0/0x470
Dec 15 17:59:45 localhost kernel:  [<c013a12a>] kthread+0xaa/0xb0
Dec 15 17:59:45 localhost kernel:  [<c013a080>] kthread+0x0/0xb0
Dec 15 17:59:45 localhost kernel:  [<c01040c5>] kernel_thread_helper+0x5/0x10
Dec 15 17:59:45 localhost kernel: Code: 45 08 85 c0 75 7b c7 45 04 00 00 00 00 ff 74 24 20 9d 89 f6 8d bc 27 00 00 00 00 8b 44 24 68 8d 4c 24 68 31 d2 39 c8 74 23 89 c2 <8b> 00 ff 4c 24 70 c7 42 08 00 00 00 00 89 48 04 89 44 24 68 c7