On Sun, 24 Feb 2013 17:35:04 -0700 Alex Williamson <alex.william...@redhat.com> wrote:
> On Linus' current tree I get the the oops below. I realize I'm still > using the deprecated max_vfs= module option, but this isn't a very > compatible or friendly migration path. I'm using an 82576 PF as an > interface for connecting an iscsi root disk and I also use the VF off > this interface for misc virtual machine assignment. Suggestions > welcome on migrating to sysfs based sr-iov enabling from an initramfs > without bouncing the PF interface, but I think the below needs to be > fixed regardless. git bisected to: This definitely looks like a bug. You should be able to use both methods without a problem. I'll look into it and see if I can figure out what's going on. - Greg > > commit fa44f2f185f7f9da19d331929bb1b56c1ccd1d93 > Author: Greg Rose <gregory.v.r...@intel.com> > Date: Thu Jan 17 01:03:06 2013 -0800 > > igb: Enable SR-IOV configuration via PCI sysfs interface > > Implement callback in the driver for the new PCI bus driver > interface that allows the user to enable/disable SR-IOV > virtual functions in a device via the sysfs interface. > > Signed-off-by: Greg Rose <gregory.v.r...@intel.com> > Tested-by: Aaron Brown <aaron.f.br...@intel.com> > Signed-off-by: Jeff Kirsher <jeffrey.t.kirs...@intel.com> > > Thanks, > > Alex > > > [ 4.831907] igb: Intel(R) Gigabit Ethernet Network Driver - > version 4.1.2-k [ 4.838868] igb: Copyright (c) 2007-2012 Intel > Corporation. [ 4.844710] igb 0000:01:00.0: Maximum of 7 VFs per > PF, using max [ 4.850768] igb 0000:01:00.0: Enabling SR-IOV VFs > using the module parameter is deprecated - please use the pci sysfs > interface. [ 4.872310] systemd[1]: Starting dracut initqueue > hook... Startin[ 4.877937] BUG: unable to handle kernel NULL > pointer dereference at 0000000000000048 [ 4.887143] IP: > [<ffffffffa015862d>] igb_reset+0xcd/0x460 [igb] [ 4.893175] PGD 0 > [ 4.895267] Oops: 0002 [#1] SMP [ 4.898666] Modules linked in: > igb(+) ptp usb_storage pps_core iscsi_tcp be2iscsi bnx2i cnic uio > cxgb4i cxgb4 cxgb3i cxgb3 mdio libcxgbi libiscsi_tcp qla4xxx > iscsi_boot_sysfs libiscsi scsi_transport_iscsi [ 4.918125] CPU 2 > [ 4.919959] Pid: 207, comm: systemd-udevd Not tainted 3.8.0-rc3+ > #278 LENOVO 4157CTO/LENOVO [ 4.928541] RIP: > 0010:[<ffffffffa015862d>] [<ffffffffa015862d>] igb_reset+0xcd/0x460 > [igb] [ 4.937039] RSP: 0018:ffff880367f63b38 EFLAGS: 00010246 > [ 4.942409] RAX: 00000000000000ff RBX: ffff880367020800 RCX: > 0000000000000001 [ 4.949601] RDX: 0000000000000000 RSI: > 0000000000000202 RDI: ffff880367020800 [ 4.956803] RBP: > ffff880367f63b58 R08: ffff88036814d408 R09: 0000000000000007 > [ 4.964004] R10: ffffffff813eea13 R11: 000000000000000f R12: > ffff880367020d68 [ 4.971205] R13: ffff880371267000 R14: > 0000000000000040 R15: ffff880367020000 [ 4.978398] FS: > 00007fdebfc3b840(0000) GS:ffff88037fc80000(0000) > knlGS:0000000000000000 [ 4.986549] CS: 0010 DS: 0000 ES: 0000 > CR0: 0000000080050033 [ 4.992369] CR2: 0000000000000048 CR3: > 0000000367df3000 CR4: 00000000000007e0 [ 4.999649] DR0: > 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > [ 5.006893] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: > 0000000000000400 [ 5.014136] Process systemd-udevd (pid: 207, > threadinfo ffff880367f62000, task ffff880367fa0000) [ 5.023108] > Stack: [ 5.025280] ffff880371267000 ffff880371267098 > ffff880371267000 0000000000000001 [ 5.033327] ffff880367f63bd8 > ffffffffa01593e5 ffff880371267098 ffff880367020d68 [ 5.041400] > 0000000000020000 ffff880367020800 0000000000000004 ffff880300007136 > [ 5.049451] Call Trace: [ 5.052050] [<ffffffffa01593e5>] > igb_probe+0x855/0xde0 [igb] [ 5.058023] [<ffffffff8131eddb>] > local_pci_probe+0x4b/0x80 [ 5.063925] [<ffffffff8131f0e1>] > pci_device_probe+0x111/0x120 [ 5.070082] [<ffffffff813e4c1b>] > driver_probe_device+0x8b/0x390 [ 5.076375] [<ffffffff813e4fcb>] > __driver_attach+0xab/0xb0 [ 5.082303] [<ffffffff813e4f20>] ? > driver_probe_device+0x390/0x390 [ 5.088736] [<ffffffff813e2ca5>] > bus_for_each_dev+0x55/0x90 [ 5.094458] [<ffffffff813e458e>] > driver_attach+0x1e/0x20 [ 5.099921] [<ffffffff813e41c0>] > bus_add_driver+0x1a0/0x290 [ 5.105691] [<ffffffffa0180000>] ? > 0xffffffffa017ffff [ 5.110937] [<ffffffffa0180000>] ? > 0xffffffffa017ffff [ 5.116305] [<ffffffff813e5697>] > driver_register+0x77/0x170 [ 5.122287] [<ffffffffa0180000>] ? > 0xffffffffa017ffff [ 5.127786] [<ffffffff8131e0ab>] > __pci_register_driver+0x4b/0x50 [ 5.134004] [<ffffffffa018004f>] > igb_init_module+0x4f/0x1000 [igb] [ 5.140565] > [<ffffffff8100215a>] do_one_initcall+0x12a/0x180 [ 5.146321] > [<ffffffff810c3f3a>] load_module+0x1a8a/0x20c0 [ 5.152020] > [<ffffffff8130f0a0>] ? ddebug_proc_open+0xc0/0xc0 [ 5.157914] > [<ffffffff810c4647>] sys_init_module+0xd7/0x120 [ 5.163639] > [<ffffffff81650ed9>] system_call_fastpath+0x16/0x1b [ 5.169702] > Code: 83 e9 10 45 85 c9 89 8b 14 08 00 00 74 4d 31 c9 66 0f 1f 44 00 > 00 48 63 d1 83 c1 01 48 8d 14 52 48 c1 e2 05 48 03 93 98 0e 00 00 > <83> 62 48 08 3b 8b 94 0e 00 00 72 df 48 89 df e8 2f da ff ff 48 > [ 5.192637] RIP [<ffffffffa015862d>] igb_reset+0xcd/0x460 [igb] g > dracut initque[ 5.198783] RSP <ffff880367f63b38> [ 5.203660] > CR2: 0000000000000048 ue hook... [ 5.207169] ---[ end trace > 494789df673e4a4c ]--- > > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
