Bug 64581
| Summary: | Xen guest page fault when passing PCI device with MSI-X to guest | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | Bjorn Helgaas (bjorn) |
| Component: | PCI | Assignee: | drivers_pci (drivers_pci) |
| Status: | NEW --- | ||
| Severity: | normal | CC: | konrad.wilk |
| Priority: | P1 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| URL: | http://lkml.kernel.org/r/20131107014215.GA27725@andromeda.dapyr.net | ||
| Kernel Version: | 3.12 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: |
console log
patch |
||
Created attachment 113791 [details]
patch
This patch is planned for v3.13. It should appear in v3.13-rc1.
Yeey! Thanks. |
Created attachment 113781 [details] console log Konrad reported the crash below in a Xen guest (full console log attached). He also supplied a patch to fix it, which I'll also attach. This bugzilla is just for documentation purposes. [ 4.751156] igb: Intel(R) Gigabit Ethernet Network Driver - version 5.0.5-k [ 4.751159] igb: Copyright (c) 2007-2013 Intel Corporation. [ 4.751358] igb 0000:00:00.0: enabling device (0000 -> 0002) [ 4.830711] igb 0000:00:00.0: Xen PCI mapped GSI16 to IRQ39 [ 4.832317] BUG: unable to handle kernel paging request at ffffc9000030600c [ 4.832325] IP: [<ffffffff8135f83d>] pci_enable_msix+0x35d/0x400 [ 4.832333] PGD 11f287067 PUD 11f288067 PMD 11f38c067 PTE 80100000fbc44465 [ 4.832341] Oops: 0003 [#1] SMP Entering kdb (current=0xffff88011c4b8ee0, pid 1164) on processor 0 Oops: (null) due to oops @ 0xffffffff8135f83d CPU: 0 PID: 1164 Comm: modprobe Not tainted 3.12.0upstream #1 task: ffff88011c4b8ee0 ti: ffff88010a7e4000 task.ti: ffff88010a7e4000 RIP: e030:[<ffffffff8135f83d>] [<ffffffff8135f83d>] pci_enable_msix+0x35d/0x400 RSP: e02b:ffff88010a7e5a58 EFLAGS: 00010286 RAX: ffffc9000030600c RBX: ffff880006164d40 RCX: 0000000000000001 RDX: 00000000000c000a RSI: ffff880006da0200 RDI: ffff880006da0200 RBP: ffff88010a7e5ab8 R08: 000000009b808093 R09: 00000000527aee44 R10: 00000000000dc034 R11: 00000000000dc026 R12: 0000000000000000 R13: ffff880006c20600 R14: ffff88010a485000 R15: 0000000000000000 FS: 00007fac5f69a700(0000) GS:ffff88011f600000(0000) knlGS:0000000000000000 CS: e033 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff8000007de220 CR3: 0000000006e99000 CR4: 0000000000042660 Stack: ffff88010a7e5ab8 ffff88010a485798 ffff88010a485798 ffffc9000000000c 00000010000080d0 c009ffff00000000 0000000000000000 ffff88011ccb8740 0000000000000007 ffff88010a485000 ffff88011ccb8000 0000000000000000 Call Trace: [<ffffffffa005435e>] igb_init_interrupt_scheme+0xde/0x450 [igb] [<ffffffff816a8571>] ? kmemleak_alloc+0x21/0x50 [<ffffffff81344925>] ? pci_bus_read_config_word+0x75/0x90