From Bugzilla Helper: User-Agent: Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.7.2) Gecko/20040804 Netscape/7.2 (ax) Description of problem: When I use this program, I gets often these messages, and the system crashes: 1: Unable to handle kernel paging request at virtual address a014d7a5 printing eip: c0118cee *pde = f7bedd02 Oops: 0000 [#1] SMP Modules linked in: netconsole gnbd CPU: 0 EIP: 0060:[<c0118cee>] Not tainted VLI EFLAGS: 00010296 (2.6.13-rc6) EIP is at kmap+0x1e/0x54 eax: 00000246 ebx: a014d7a5 ecx: c11ef260 edx: cabbc400 esi: 00008000 edi: 00000001 ebp: f6c7fe00 esp: f6c7fdf4 ds: 007b es: 007b ss: 0068 Process md3_raid1 (pid: 2769, threadinfo=f6c7e000 task=f7eef020) Stack: c0577800 00000006 f5f93cfc f6c7fe54 f895a9cc a014d7a5 00000001 cf793000 00001000 00004000 d3fc3180 f73e9bf0 f895e718 cabbc400 007ea037 01000000 d4175a4c f895e6f0 65000000 00f03d8d 00100000 d4175a4c f895e6f0 f895e700 Call Trace: [<c0103ca2>] show_stack+0x9a/0xd0 [<c0103e6d>] show_registers+0x175/0x209 [<c010408c>] die+0xfa/0x17c [<c0117b68>] do_page_fault+0x269/0x7bd [<c01038d7>] error_code+0x4f/0x54 [<f895a9cc>] __gnbd_send_req+0x196/0x28d [gnbd] [<f895af12>] do_gnbd_request+0xe5/0x198 [gnbd] [<c0383a0d>] __generic_unplug_device+0x28/0x2e [<c038150f>] __elv_add_request+0xaa/0xac [<c0384e5b>] __make_request+0x20d/0x512 [<c0385490>] generic_make_request+0xb2/0x27a [<c04748a2>] raid1d+0xbf/0x2cb [<c04825c9>] md_thread+0x134/0x16f [<c01010d5>] kernel_thread_helper+0x5/0xb Code: 89 c1 81 e1 ff ff 0f 00 eb b0 90 90 90 55 89 e5 53 83 ec 08 8b 5d 08 c7 44 24 04 06 00 00 00 c7 04 24 00 78 57 c0 e8 72 47 00 00 <8b> 03 c1 e8 1e 8b 14 85 14 db 73 c0 8b 82 0c 04 00 00 05 00 09 <0>Fatal exception: panic in 5 seconds 2-3-4...8 are in this url: http://download.netcenter.hu/gnbd-bug/1-8.log Version-Release number of selected component (if applicable): gnbd-kernel-2.6.11.2-20050420.133124.FC4.39 How reproducible: Sometimes Steps to Reproduce: 1. high use of this module. Additional info: I use this module with very high load. (continously 200-350Mbit/s for reads and 25-200Mbit/s for write (write average about 30-40Mbit/s)) I get this problem about daily, or 1-2 days often, depends on traffic. The system: HW: dual xeon 2x3G 800FSB 4GB ECC DDR2/400 2x e1000 ethernet. SW: RH 9.0 GCC: 4.0.0 kernel: 2.6.13 and 13-rc6 summary: 1x webserver (client, xeon 8TB = 4x2TB) 4x GNBD server (4x 2.0TB) In the GNBD-client I get one big (8TB) raid0 device from 4 nodes. On the big raid0 device I use XFS. (no cluster, only gnbd) When I switch from 2.6.13-rc3 to rc6 I gets this problem. I have reported it to kernel developers, but they forwarded me to here.
I have not seen this issue using either the STABLE or HEAD gnbd branches with a kernel.org kernel. If someone sees this issue again, please reopen the bug.