* Re: 2.6.31.4: Oops [not found] ` <20091014115306.2a87a7a4.skraw-DcQCyzbjH0jQT0dZR+AlfA@public.gmane.org> @ 2009-10-19 3:49 ` Andrew Morton 2009-10-19 4:50 ` Trond Myklebust 0 siblings, 1 reply; 5+ messages in thread From: Andrew Morton @ 2009-10-19 3:49 UTC (permalink / raw) To: Stephan von Krawczynski; +Cc: linux-kernel, linux-nfs (cc linux-nfs) On Wed, 14 Oct 2009 11:53:06 +0200 Stephan von Krawczynski <skraw-DcQCyzbjH0jQT0dZR+AlfA@public.gmane.org> wrote: > Hello all, > > just received this one: > > Oct 13 20:16:02 box kernel: BUG: unable to handle kernel paging request at ffffff98 > Oct 13 20:16:02 box kernel: IP: [<f827b2e4>] nfs_writepages+0x13/0xad [nfs] > Oct 13 20:16:02 box kernel: *pde = 0042d067 *pte = 00000000 > Oct 13 20:16:02 box kernel: Oops: 0002 [#1] > Oct 13 20:16:02 box kernel: last sysfs file: /sys/devices/pci0000:00/0000:00:1e.0/0000:03:08.0/subsystem_device > Oct 13 20:16:02 box kernel: Modules linked in: speedstep_lib freq_table nfs lockd sunrpc e100 mii e1000 > Oct 13 20:16:02 box kernel: > Oct 13 20:16:02 box kernel: Pid: 4638, comm: httpd2-prefork Not tainted (2.6.31.4 #1) > Oct 13 20:16:02 box kernel: EIP: 0060:[<f827b2e4>] EFLAGS: 00010292 CPU: 0 > Oct 13 20:16:02 box kernel: EIP is at nfs_writepages+0x13/0xad [nfs] > Oct 13 20:16:02 box kernel: EAX: f0d0f654 EBX: 0000000a ECX: 00000020 EDX: f6393ecc > Oct 13 20:16:02 box kernel: ESI: f0d0f654 EDI: 00000000 EBP: ffffff98 ESP: f6393e38 > Oct 13 20:16:02 box kernel: DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068 > Oct 13 20:16:02 box kernel: Process httpd2-prefork (pid: 4638, ti=f6392000 task=f63f7850 task.ti=f6392000) > Oct 13 20:16:03 box kernel: Stack: > Oct 13 20:16:03 box kernel: f6393ecc f0d0f654 00000000 c0161f93 002283a0 00000000 00000000 f6088052 > Oct 13 20:16:03 box kernel: <0> f4d0f7ec f6393e6c f715ca00 f827362e f700d900 f4d08a14 0000000a f0d0f654 > Oct 13 20:16:03 box kernel: <0> f6393ecc 00000020 f827c7ce 0000000a f6393ec4 f6393ef4 f0d0f654 f827c85e > Oct 13 20:16:03 box kernel: Call Trace: > Oct 13 20:16:03 box kernel: [<c0161f93>] ? __link_path_walk+0x840/0x910 > Oct 13 20:16:03 box kernel: [<f827362e>] ? __nfs_revalidate_inode+0x105/0x18a [nfs] > Oct 13 20:16:03 box kernel: [<f827c7ce>] ? __nfs_write_mapping+0xf/0x3b [nfs] > Oct 13 20:16:03 box kernel: [<f827c85e>] ? nfs_write_mapping+0x64/0x6c [nfs] > Oct 13 20:16:03 box kernel: [<c01e0341>] ? __copy_to_user_ll+0x3e/0x45 > Oct 13 20:16:03 box kernel: [<f8273238>] ? nfs_getattr+0x34/0xaf [nfs] > Oct 13 20:16:03 box kernel: [<f8273204>] ? nfs_getattr+0x0/0xaf [nfs] > Oct 13 20:16:03 box kernel: [<c015dce1>] ? vfs_getattr+0x21/0x30 > Oct 13 20:16:03 box kernel: [<c015dd6e>] ? vfs_fstatat+0x4d/0x61 > Oct 13 20:16:03 box kernel: [<c015dda7>] ? vfs_lstat+0x13/0x15 > Oct 13 20:16:03 box kernel: [<c015e2fc>] ? sys_lstat64+0xf/0x23 > Oct 13 20:16:03 box kernel: [<c0102848>] ? sysenter_do_call+0x12/0x26 > Oct 13 20:16:03 box kernel: Code: c3 56 89 c6 53 e8 4a ff ff ff 89 c3 89 f0 e8 5b 0e ec c7 89 d8 5b 5e c3 55 57 56 53 83 ec 38 89 44 24 04 89 14 24 8b 38 8d 6f 98 <0f> ba 6f 98 04 19 c0 31 d2 85 c0 74 19 68 82 00 00 00 ba 04 00 > Oct 13 20:16:03 box kernel: EIP: [<f827b2e4>] nfs_writepages+0x13/0xad [nfs] SS:ESP 0068:f6393e38 > Oct 13 20:16:03 box kernel: CR2: 00000000ffffff98 > Oct 13 20:16:03 box kernel: ---[ end trace 8d9ba71dd690c760 ]--- > > box is: > > 0000:00:00.0 Host bridge: Intel Corp. 82875P Memory Controller Hub (rev 02) > 0000:00:01.0 PCI bridge: Intel Corp. 82875P Processor to AGP Controller (rev 02) > 0000:00:03.0 PCI bridge: Intel Corp. 82875P Processor to PCI to CSA Bridge (rev 02) > 0000:00:06.0 System peripheral: Intel Corp. 82875P Processor to I/O Memory Interface (rev 02) > 0000:00:1d.0 USB Controller: Intel Corp. 82801EB USB (rev 02) > 0000:00:1d.1 USB Controller: Intel Corp. 82801EB USB (rev 02) > 0000:00:1d.2 USB Controller: Intel Corp. 82801EB USB (rev 02) > 0000:00:1d.3 USB Controller: Intel Corp. 82801EB USB (rev 02) > 0000:00:1d.7 USB Controller: Intel Corp. 82801EB USB2 (rev 02) > 0000:00:1e.0 PCI bridge: Intel Corp. 82801BA/CA/DB/EB PCI Bridge (rev c2) > 0000:00:1f.0 ISA bridge: Intel Corp. 82801EB LPC Interface Controller (rev 02) > 0000:00:1f.1 IDE interface: Intel Corp. 82801EB Ultra ATA Storage Controller (rev 02) > 0000:00:1f.3 SMBus: Intel Corp. 82801EB SMBus Controller (rev 02) > 0000:02:01.0 Ethernet controller: Intel Corp. 82547EI Gigabit Ethernet Controller (LOM) > 0000:03:02.0 Ethernet controller: Intel Corp. 82541EI Gigabit Ethernet Controller (Copper) > 0000:03:07.0 VGA compatible controller: ATI Technologies Inc Rage XL (rev 27) > 0000:03:08.0 Ethernet controller: Intel Corp.: Unknown device 1051 (rev 02) > > mem is: > > # cat /proc/meminfo > MemTotal: 2076260 kB > MemFree: 93704 kB > Buffers: 112964 kB > Cached: 1510252 kB > SwapCached: 0 kB > Active: 366932 kB > Inactive: 1492284 kB > Active(anon): 144868 kB > Inactive(anon): 91208 kB > Active(file): 222064 kB > Inactive(file): 1401076 kB > Unevictable: 0 kB > Mlocked: 0 kB > HighTotal: 1187784 kB > HighFree: 20336 kB > LowTotal: 888476 kB > LowFree: 73368 kB > SwapTotal: 497972 kB > SwapFree: 497972 kB > Dirty: 104 kB > Writeback: 0 kB > AnonPages: 236012 kB > Mapped: 12640 kB > Slab: 115316 kB > SReclaimable: 107848 kB > SUnreclaim: 7468 kB > PageTables: 2544 kB > NFS_Unstable: 0 kB > Bounce: 0 kB > WritebackTmp: 0 kB > CommitLimit: 1536100 kB > Committed_AS: 791912 kB > VmallocTotal: 122880 kB > VmallocUsed: 1828 kB > VmallocChunk: 120184 kB > HugePages_Total: 0 > HugePages_Free: 0 > HugePages_Rsvd: 0 > HugePages_Surp: 0 > Hugepagesize: 4096 kB > DirectMap4k: 8184 kB > DirectMap4M: 901120 kB > > Feel free to ask further questions when necessary. ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: 2.6.31.4: Oops 2009-10-19 3:49 ` 2.6.31.4: Oops Andrew Morton @ 2009-10-19 4:50 ` Trond Myklebust 2009-10-19 9:21 ` Stephan von Krawczynski 0 siblings, 1 reply; 5+ messages in thread From: Trond Myklebust @ 2009-10-19 4:50 UTC (permalink / raw) To: Andrew Morton; +Cc: Stephan von Krawczynski, linux-kernel, linux-nfs On Sun, 2009-10-18 at 20:49 -0700, Andrew Morton wrote: > (cc linux-nfs) > > On Wed, 14 Oct 2009 11:53:06 +0200 Stephan von Krawczynski <skraw-DcQCyzbjH0jQT0dZR+AlfA@public.gmane.org> wrote: > > > Hello all, > > > > just received this one: > > > > Oct 13 20:16:02 box kernel: BUG: unable to handle kernel paging request at ffffff98 > > Oct 13 20:16:02 box kernel: IP: [<f827b2e4>] nfs_writepages+0x13/0xad [nfs] > > Oct 13 20:16:02 box kernel: *pde = 0042d067 *pte = 00000000 > > Oct 13 20:16:02 box kernel: Oops: 0002 [#1] > > Oct 13 20:16:02 box kernel: last sysfs file: /sys/devices/pci0000:00/0000:00:1e.0/0000:03:08.0/subsystem_device > > Oct 13 20:16:02 box kernel: Modules linked in: speedstep_lib freq_table nfs lockd sunrpc e100 mii e1000 > > Oct 13 20:16:02 box kernel: > > Oct 13 20:16:02 box kernel: Pid: 4638, comm: httpd2-prefork Not tainted (2.6.31.4 #1) > > Oct 13 20:16:02 box kernel: EIP: 0060:[<f827b2e4>] EFLAGS: 00010292 CPU: 0 > > Oct 13 20:16:02 box kernel: EIP is at nfs_writepages+0x13/0xad [nfs] > > Oct 13 20:16:02 box kernel: EAX: f0d0f654 EBX: 0000000a ECX: 00000020 EDX: f6393ecc > > Oct 13 20:16:02 box kernel: ESI: f0d0f654 EDI: 00000000 EBP: ffffff98 ESP: f6393e38 > > Oct 13 20:16:02 box kernel: DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068 > > Oct 13 20:16:02 box kernel: Process httpd2-prefork (pid: 4638, ti=f6392000 task=f63f7850 task.ti=f6392000) > > Oct 13 20:16:03 box kernel: Stack: > > Oct 13 20:16:03 box kernel: f6393ecc f0d0f654 00000000 c0161f93 002283a0 00000000 00000000 f6088052 > > Oct 13 20:16:03 box kernel: <0> f4d0f7ec f6393e6c f715ca00 f827362e f700d900 f4d08a14 0000000a f0d0f654 > > Oct 13 20:16:03 box kernel: <0> f6393ecc 00000020 f827c7ce 0000000a f6393ec4 f6393ef4 f0d0f654 f827c85e > > Oct 13 20:16:03 box kernel: Call Trace: > > Oct 13 20:16:03 box kernel: [<c0161f93>] ? __link_path_walk+0x840/0x910 > > Oct 13 20:16:03 box kernel: [<f827362e>] ? __nfs_revalidate_inode+0x105/0x18a [nfs] > > Oct 13 20:16:03 box kernel: [<f827c7ce>] ? __nfs_write_mapping+0xf/0x3b [nfs] > > Oct 13 20:16:03 box kernel: [<f827c85e>] ? nfs_write_mapping+0x64/0x6c [nfs] > > Oct 13 20:16:03 box kernel: [<c01e0341>] ? __copy_to_user_ll+0x3e/0x45 > > Oct 13 20:16:03 box kernel: [<f8273238>] ? nfs_getattr+0x34/0xaf [nfs] > > Oct 13 20:16:03 box kernel: [<f8273204>] ? nfs_getattr+0x0/0xaf [nfs] > > Oct 13 20:16:03 box kernel: [<c015dce1>] ? vfs_getattr+0x21/0x30 > > Oct 13 20:16:03 box kernel: [<c015dd6e>] ? vfs_fstatat+0x4d/0x61 > > Oct 13 20:16:03 box kernel: [<c015dda7>] ? vfs_lstat+0x13/0x15 > > Oct 13 20:16:03 box kernel: [<c015e2fc>] ? sys_lstat64+0xf/0x23 > > Oct 13 20:16:03 box kernel: [<c0102848>] ? sysenter_do_call+0x12/0x26 > > Oct 13 20:16:03 box kernel: Code: c3 56 89 c6 53 e8 4a ff ff ff 89 c3 89 f0 e8 5b 0e ec c7 89 d8 5b 5e c3 55 57 56 53 83 ec 38 89 44 24 04 89 14 24 8b 38 8d 6f 98 <0f> ba 6f 98 04 19 c0 31 d2 85 c0 74 19 68 82 00 00 00 ba 04 00 > > Oct 13 20:16:03 box kernel: EIP: [<f827b2e4>] nfs_writepages+0x13/0xad [nfs] SS:ESP 0068:f6393e38 > > Oct 13 20:16:03 box kernel: CR2: 00000000ffffff98 > > Oct 13 20:16:03 box kernel: ---[ end trace 8d9ba71dd690c760 ]--- > > >From the Oops, it looks as if mapping->host is a null pointer. I don't see how this can ever happen short of a memory scribble... Stephan, have you tried turning on the slab debugging code? Cheers Trond -- Trond Myklebust Linux NFS client maintainer NetApp Trond.Myklebust@netapp.com www.netapp.com ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: 2.6.31.4: Oops 2009-10-19 4:50 ` Trond Myklebust @ 2009-10-19 9:21 ` Stephan von Krawczynski 2009-10-26 19:49 ` Trond Myklebust 0 siblings, 1 reply; 5+ messages in thread From: Stephan von Krawczynski @ 2009-10-19 9:21 UTC (permalink / raw) To: Trond Myklebust; +Cc: Andrew Morton, linux-kernel, linux-nfs On Mon, 19 Oct 2009 13:50:23 +0900 Trond Myklebust <Trond.Myklebust@netapp.com> wrote: > On Sun, 2009-10-18 at 20:49 -0700, Andrew Morton wrote: > > (cc linux-nfs) > > > > On Wed, 14 Oct 2009 11:53:06 +0200 Stephan von Krawczynski <skraw@ithnet.com> wrote: > > > > > Hello all, > > > > > > just received this one: > > > > > > Oct 13 20:16:02 box kernel: BUG: unable to handle kernel paging request at ffffff98 > > > Oct 13 20:16:02 box kernel: IP: [<f827b2e4>] nfs_writepages+0x13/0xad [nfs] > > > Oct 13 20:16:02 box kernel: *pde = 0042d067 *pte = 00000000 > > > Oct 13 20:16:02 box kernel: Oops: 0002 [#1] > > > Oct 13 20:16:02 box kernel: last sysfs file: /sys/devices/pci0000:00/0000:00:1e.0/0000:03:08.0/subsystem_device > > > Oct 13 20:16:02 box kernel: Modules linked in: speedstep_lib freq_table nfs lockd sunrpc e100 mii e1000 > > > Oct 13 20:16:02 box kernel: > > > Oct 13 20:16:02 box kernel: Pid: 4638, comm: httpd2-prefork Not tainted (2.6.31.4 #1) > > > Oct 13 20:16:02 box kernel: EIP: 0060:[<f827b2e4>] EFLAGS: 00010292 CPU: 0 > > > Oct 13 20:16:02 box kernel: EIP is at nfs_writepages+0x13/0xad [nfs] > > > Oct 13 20:16:02 box kernel: EAX: f0d0f654 EBX: 0000000a ECX: 00000020 EDX: f6393ecc > > > Oct 13 20:16:02 box kernel: ESI: f0d0f654 EDI: 00000000 EBP: ffffff98 ESP: f6393e38 > > > Oct 13 20:16:02 box kernel: DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068 > > > Oct 13 20:16:02 box kernel: Process httpd2-prefork (pid: 4638, ti=f6392000 task=f63f7850 task.ti=f6392000) > > > Oct 13 20:16:03 box kernel: Stack: > > > Oct 13 20:16:03 box kernel: f6393ecc f0d0f654 00000000 c0161f93 002283a0 00000000 00000000 f6088052 > > > Oct 13 20:16:03 box kernel: <0> f4d0f7ec f6393e6c f715ca00 f827362e f700d900 f4d08a14 0000000a f0d0f654 > > > Oct 13 20:16:03 box kernel: <0> f6393ecc 00000020 f827c7ce 0000000a f6393ec4 f6393ef4 f0d0f654 f827c85e > > > Oct 13 20:16:03 box kernel: Call Trace: > > > Oct 13 20:16:03 box kernel: [<c0161f93>] ? __link_path_walk+0x840/0x910 > > > Oct 13 20:16:03 box kernel: [<f827362e>] ? __nfs_revalidate_inode+0x105/0x18a [nfs] > > > Oct 13 20:16:03 box kernel: [<f827c7ce>] ? __nfs_write_mapping+0xf/0x3b [nfs] > > > Oct 13 20:16:03 box kernel: [<f827c85e>] ? nfs_write_mapping+0x64/0x6c [nfs] > > > Oct 13 20:16:03 box kernel: [<c01e0341>] ? __copy_to_user_ll+0x3e/0x45 > > > Oct 13 20:16:03 box kernel: [<f8273238>] ? nfs_getattr+0x34/0xaf [nfs] > > > Oct 13 20:16:03 box kernel: [<f8273204>] ? nfs_getattr+0x0/0xaf [nfs] > > > Oct 13 20:16:03 box kernel: [<c015dce1>] ? vfs_getattr+0x21/0x30 > > > Oct 13 20:16:03 box kernel: [<c015dd6e>] ? vfs_fstatat+0x4d/0x61 > > > Oct 13 20:16:03 box kernel: [<c015dda7>] ? vfs_lstat+0x13/0x15 > > > Oct 13 20:16:03 box kernel: [<c015e2fc>] ? sys_lstat64+0xf/0x23 > > > Oct 13 20:16:03 box kernel: [<c0102848>] ? sysenter_do_call+0x12/0x26 > > > Oct 13 20:16:03 box kernel: Code: c3 56 89 c6 53 e8 4a ff ff ff 89 c3 89 f0 e8 5b 0e ec c7 89 d8 5b 5e c3 55 57 56 53 83 ec 38 89 44 24 04 89 14 24 8b 38 8d 6f 98 <0f> ba 6f 98 04 19 c0 31 d2 85 c0 74 19 68 82 00 00 00 ba 04 00 > > > Oct 13 20:16:03 box kernel: EIP: [<f827b2e4>] nfs_writepages+0x13/0xad [nfs] SS:ESP 0068:f6393e38 > > > Oct 13 20:16:03 box kernel: CR2: 00000000ffffff98 > > > Oct 13 20:16:03 box kernel: ---[ end trace 8d9ba71dd690c760 ]--- > > > > > From the Oops, it looks as if mapping->host is a null pointer. I don't > see how this can ever happen short of a memory scribble... > > Stephan, have you tried turning on the slab debugging code? > > Cheers > Trond I have not up to now, but will do so. If I see further output I will come back. You think it may be a dead RAM? -- Regards, Stephan ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: 2.6.31.4: Oops 2009-10-19 9:21 ` Stephan von Krawczynski @ 2009-10-26 19:49 ` Trond Myklebust [not found] ` <1256586596.15642.6.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org> 0 siblings, 1 reply; 5+ messages in thread From: Trond Myklebust @ 2009-10-26 19:49 UTC (permalink / raw) To: Stephan von Krawczynski; +Cc: Andrew Morton, linux-kernel, linux-nfs On Mon, 2009-10-19 at 11:21 +0200, Stephan von Krawczynski wrote: > On Mon, 19 Oct 2009 13:50:23 +0900 > Trond Myklebust <Trond.Myklebust@netapp.com> wrote: > > > On Sun, 2009-10-18 at 20:49 -0700, Andrew Morton wrote: > > > (cc linux-nfs) > > > > > > On Wed, 14 Oct 2009 11:53:06 +0200 Stephan von Krawczynski <skraw@ithnet.com> wrote: > > > > > > > Hello all, > > > > > > > > just received this one: > > > > > > > > Oct 13 20:16:02 box kernel: BUG: unable to handle kernel paging request at ffffff98 > > > > Oct 13 20:16:02 box kernel: IP: [<f827b2e4>] nfs_writepages+0x13/0xad [nfs] > > > > Oct 13 20:16:02 box kernel: *pde = 0042d067 *pte = 00000000 > > > > Oct 13 20:16:02 box kernel: Oops: 0002 [#1] > > > > Oct 13 20:16:02 box kernel: last sysfs file: /sys/devices/pci0000:00/0000:00:1e.0/0000:03:08.0/subsystem_device > > > > Oct 13 20:16:02 box kernel: Modules linked in: speedstep_lib freq_table nfs lockd sunrpc e100 mii e1000 > > > > Oct 13 20:16:02 box kernel: > > > > Oct 13 20:16:02 box kernel: Pid: 4638, comm: httpd2-prefork Not tainted (2.6.31.4 #1) > > > > Oct 13 20:16:02 box kernel: EIP: 0060:[<f827b2e4>] EFLAGS: 00010292 CPU: 0 > > > > Oct 13 20:16:02 box kernel: EIP is at nfs_writepages+0x13/0xad [nfs] > > > > Oct 13 20:16:02 box kernel: EAX: f0d0f654 EBX: 0000000a ECX: 00000020 EDX: f6393ecc > > > > Oct 13 20:16:02 box kernel: ESI: f0d0f654 EDI: 00000000 EBP: ffffff98 ESP: f6393e38 > > > > Oct 13 20:16:02 box kernel: DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068 > > > > Oct 13 20:16:02 box kernel: Process httpd2-prefork (pid: 4638, ti=f6392000 task=f63f7850 task.ti=f6392000) > > > > Oct 13 20:16:03 box kernel: Stack: > > > > Oct 13 20:16:03 box kernel: f6393ecc f0d0f654 00000000 c0161f93 002283a0 00000000 00000000 f6088052 > > > > Oct 13 20:16:03 box kernel: <0> f4d0f7ec f6393e6c f715ca00 f827362e f700d900 f4d08a14 0000000a f0d0f654 > > > > Oct 13 20:16:03 box kernel: <0> f6393ecc 00000020 f827c7ce 0000000a f6393ec4 f6393ef4 f0d0f654 f827c85e > > > > Oct 13 20:16:03 box kernel: Call Trace: > > > > Oct 13 20:16:03 box kernel: [<c0161f93>] ? __link_path_walk+0x840/0x910 > > > > Oct 13 20:16:03 box kernel: [<f827362e>] ? __nfs_revalidate_inode+0x105/0x18a [nfs] > > > > Oct 13 20:16:03 box kernel: [<f827c7ce>] ? __nfs_write_mapping+0xf/0x3b [nfs] > > > > Oct 13 20:16:03 box kernel: [<f827c85e>] ? nfs_write_mapping+0x64/0x6c [nfs] > > > > Oct 13 20:16:03 box kernel: [<c01e0341>] ? __copy_to_user_ll+0x3e/0x45 > > > > Oct 13 20:16:03 box kernel: [<f8273238>] ? nfs_getattr+0x34/0xaf [nfs] > > > > Oct 13 20:16:03 box kernel: [<f8273204>] ? nfs_getattr+0x0/0xaf [nfs] > > > > Oct 13 20:16:03 box kernel: [<c015dce1>] ? vfs_getattr+0x21/0x30 > > > > Oct 13 20:16:03 box kernel: [<c015dd6e>] ? vfs_fstatat+0x4d/0x61 > > > > Oct 13 20:16:03 box kernel: [<c015dda7>] ? vfs_lstat+0x13/0x15 > > > > Oct 13 20:16:03 box kernel: [<c015e2fc>] ? sys_lstat64+0xf/0x23 > > > > Oct 13 20:16:03 box kernel: [<c0102848>] ? sysenter_do_call+0x12/0x26 > > > > Oct 13 20:16:03 box kernel: Code: c3 56 89 c6 53 e8 4a ff ff ff 89 c3 89 f0 e8 5b 0e ec c7 89 d8 5b 5e c3 55 57 56 53 83 ec 38 89 44 24 04 89 14 24 8b 38 8d 6f 98 <0f> ba 6f 98 04 19 c0 31 d2 85 c0 74 19 68 82 00 00 00 ba 04 00 > > > > Oct 13 20:16:03 box kernel: EIP: [<f827b2e4>] nfs_writepages+0x13/0xad [nfs] SS:ESP 0068:f6393e38 > > > > Oct 13 20:16:03 box kernel: CR2: 00000000ffffff98 > > > > Oct 13 20:16:03 box kernel: ---[ end trace 8d9ba71dd690c760 ]--- > > > > > > > > From the Oops, it looks as if mapping->host is a null pointer. I don't > > see how this can ever happen short of a memory scribble... > > > > Stephan, have you tried turning on the slab debugging code? > > > > Cheers > > Trond > > I have not up to now, but will do so. If I see further output I will come back. > You think it may be a dead RAM? Are you by any chance running an NFSv4 client? If so, there is a known use-after-free bug in 2.6.31 (see http://bugzilla.kernel.org/show_bug.cgi?id=14249) that would need to be fixed before you do any more testing. Alternatively, if you can reproduce this using NFSv3 only (i.e. reboot after changing _all_ your NFSv4 mounts in /etc/fstab into nfsv3 mounts) then it must be a different bug. Cheers Trond -- Trond Myklebust Linux NFS client maintainer NetApp Trond.Myklebust@netapp.com www.netapp.com ^ permalink raw reply [flat|nested] 5+ messages in thread
[parent not found: <1256586596.15642.6.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org>]
* Re: 2.6.31.4: Oops [not found] ` <1256586596.15642.6.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org> @ 2009-10-27 10:47 ` Stephan von Krawczynski 0 siblings, 0 replies; 5+ messages in thread From: Stephan von Krawczynski @ 2009-10-27 10:47 UTC (permalink / raw) To: Trond Myklebust; +Cc: Andrew Morton, linux-kernel, linux-nfs On Mon, 26 Oct 2009 15:49:56 -0400 Trond Myklebust <Trond.Myklebust@netapp.com> wrote: > On Mon, 2009-10-19 at 11:21 +0200, Stephan von Krawczynski wrote: > > On Mon, 19 Oct 2009 13:50:23 +0900 > > Trond Myklebust <Trond.Myklebust@netapp.com> wrote: > > > > > On Sun, 2009-10-18 at 20:49 -0700, Andrew Morton wrote: > > > > (cc linux-nfs) > > > > > > > > On Wed, 14 Oct 2009 11:53:06 +0200 Stephan von Krawczynski <skraw-DcQCyzbjH0jQT0dZR+AlfA@public.gmane.org> wrote: > > > > > > > > > Hello all, > > > > > > > > > > just received this one: > > > > > > > > > > Oct 13 20:16:02 box kernel: BUG: unable to handle kernel paging request at ffffff98 > > > > > Oct 13 20:16:02 box kernel: IP: [<f827b2e4>] nfs_writepages+0x13/0xad [nfs] > > > > > Oct 13 20:16:02 box kernel: *pde = 0042d067 *pte = 00000000 > > > > > Oct 13 20:16:02 box kernel: Oops: 0002 [#1] > > > > > Oct 13 20:16:02 box kernel: last sysfs file: /sys/devices/pci0000:00/0000:00:1e.0/0000:03:08.0/subsystem_device > > > > > Oct 13 20:16:02 box kernel: Modules linked in: speedstep_lib freq_table nfs lockd sunrpc e100 mii e1000 > > > > > Oct 13 20:16:02 box kernel: > > > > > Oct 13 20:16:02 box kernel: Pid: 4638, comm: httpd2-prefork Not tainted (2.6.31.4 #1) > > > > > Oct 13 20:16:02 box kernel: EIP: 0060:[<f827b2e4>] EFLAGS: 00010292 CPU: 0 > > > > > Oct 13 20:16:02 box kernel: EIP is at nfs_writepages+0x13/0xad [nfs] > > > > > Oct 13 20:16:02 box kernel: EAX: f0d0f654 EBX: 0000000a ECX: 00000020 EDX: f6393ecc > > > > > Oct 13 20:16:02 box kernel: ESI: f0d0f654 EDI: 00000000 EBP: ffffff98 ESP: f6393e38 > > > > > Oct 13 20:16:02 box kernel: DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068 > > > > > Oct 13 20:16:02 box kernel: Process httpd2-prefork (pid: 4638, ti=f6392000 task=f63f7850 task.ti=f6392000) > > > > > Oct 13 20:16:03 box kernel: Stack: > > > > > Oct 13 20:16:03 box kernel: f6393ecc f0d0f654 00000000 c0161f93 002283a0 00000000 00000000 f6088052 > > > > > Oct 13 20:16:03 box kernel: <0> f4d0f7ec f6393e6c f715ca00 f827362e f700d900 f4d08a14 0000000a f0d0f654 > > > > > Oct 13 20:16:03 box kernel: <0> f6393ecc 00000020 f827c7ce 0000000a f6393ec4 f6393ef4 f0d0f654 f827c85e > > > > > Oct 13 20:16:03 box kernel: Call Trace: > > > > > Oct 13 20:16:03 box kernel: [<c0161f93>] ? __link_path_walk+0x840/0x910 > > > > > Oct 13 20:16:03 box kernel: [<f827362e>] ? __nfs_revalidate_inode+0x105/0x18a [nfs] > > > > > Oct 13 20:16:03 box kernel: [<f827c7ce>] ? __nfs_write_mapping+0xf/0x3b [nfs] > > > > > Oct 13 20:16:03 box kernel: [<f827c85e>] ? nfs_write_mapping+0x64/0x6c [nfs] > > > > > Oct 13 20:16:03 box kernel: [<c01e0341>] ? __copy_to_user_ll+0x3e/0x45 > > > > > Oct 13 20:16:03 box kernel: [<f8273238>] ? nfs_getattr+0x34/0xaf [nfs] > > > > > Oct 13 20:16:03 box kernel: [<f8273204>] ? nfs_getattr+0x0/0xaf [nfs] > > > > > Oct 13 20:16:03 box kernel: [<c015dce1>] ? vfs_getattr+0x21/0x30 > > > > > Oct 13 20:16:03 box kernel: [<c015dd6e>] ? vfs_fstatat+0x4d/0x61 > > > > > Oct 13 20:16:03 box kernel: [<c015dda7>] ? vfs_lstat+0x13/0x15 > > > > > Oct 13 20:16:03 box kernel: [<c015e2fc>] ? sys_lstat64+0xf/0x23 > > > > > Oct 13 20:16:03 box kernel: [<c0102848>] ? sysenter_do_call+0x12/0x26 > > > > > Oct 13 20:16:03 box kernel: Code: c3 56 89 c6 53 e8 4a ff ff ff 89 c3 89 f0 e8 5b 0e ec c7 89 d8 5b 5e c3 55 57 56 53 83 ec 38 89 44 24 04 89 14 24 8b 38 8d 6f 98 <0f> ba 6f 98 04 19 c0 31 d2 85 c0 74 19 68 82 00 00 00 ba 04 00 > > > > > Oct 13 20:16:03 box kernel: EIP: [<f827b2e4>] nfs_writepages+0x13/0xad [nfs] SS:ESP 0068:f6393e38 > > > > > Oct 13 20:16:03 box kernel: CR2: 00000000ffffff98 > > > > > Oct 13 20:16:03 box kernel: ---[ end trace 8d9ba71dd690c760 ]--- > > > > > > > > > > > From the Oops, it looks as if mapping->host is a null pointer. I don't > > > see how this can ever happen short of a memory scribble... > > > > > > Stephan, have you tried turning on the slab debugging code? > > > > > > Cheers > > > Trond > > > > I have not up to now, but will do so. If I see further output I will come back. > > You think it may be a dead RAM? > > Are you by any chance running an NFSv4 client? If so, there is a known > use-after-free bug in 2.6.31 (see > http://bugzilla.kernel.org/show_bug.cgi?id=14249) that would need to be > fixed before you do any more testing. > > Alternatively, if you can reproduce this using NFSv3 only (i.e. reboot > after changing _all_ your NFSv4 mounts in /etc/fstab into nfsv3 mounts) > then it must be a different bug. > > Cheers > Trond Hi Trond, this is NFSv3 only. There is no v4 involved or has ever been used in this setup. We have seen another hang on the same box with same kernel lately, but unfortunately there was no output generated. So I cannot tell if it was the very same issue. -- Regards, Stephan ^ permalink raw reply [flat|nested] 5+ messages in thread
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[not found] <20091014115306.2a87a7a4.skraw@ithnet.com>
[not found] ` <20091014115306.2a87a7a4.skraw-DcQCyzbjH0jQT0dZR+AlfA@public.gmane.org>
2009-10-19 3:49 ` 2.6.31.4: Oops Andrew Morton
2009-10-19 4:50 ` Trond Myklebust
2009-10-19 9:21 ` Stephan von Krawczynski
2009-10-26 19:49 ` Trond Myklebust
[not found] ` <1256586596.15642.6.camel-rJ7iovZKK19ZJLDQqaL3InhyD016LWXt@public.gmane.org>
2009-10-27 10:47 ` Stephan von Krawczynski
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