Messages in this thread | | | Date | Fri, 15 Sep 2006 22:40:55 +0200 | From | Markus Trippelsdorf <> | Subject | Re: 2.6.18-rc7 Unable to handle kernel paging request |
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On Fri, Sep 15, 2006 at 10:59:33AM -0700, Badari Pulavarty wrote: > On Wed, 2006-09-13 at 23:03 +0200, Markus Trippelsdorf wrote: > > Don't know what to make of these kernel error messages. > > This happened an hour ago and the system kept running until I rebooted. > > > > Unable to handle kernel paging request at ffffffff004c82c8 RIP: > > [<ffffffff80222a24>] generic_file_mmap+0x14/0x50 > > PGD 203027 PUD 0 > > CPU 0 > > Modules linked in: tuner bttv video_buf ir_common compat_ioctl32 btcx_risc tveeprom videodev v4l1_compat v4l2_common > > Pid: 24497, comm: emake Not tainted 2.6.18-rc7 #1 > > RIP: 0010:[<ffffffff80222a24>] [<ffffffff80222a24>] generic_file_mmap+0x14/0x50 > > RSP: 0018:ffff81005db69e98 EFLAGS: 00010206 > > RAX: ffffffff004c82c0 RBX: ffff810010252528 RCX: 0000000000000000 > > RDX: 00000000fffffff8 RSI: ffff810010252528 RDI: ffff810023234bc0 > > RBP: ffff810023234bc0 R08: 0000000000000000 R09: ffff810010252528 > > R10: ffff810023c1fde0 R11: ffff810023c1fde0 R12: 00000000ffffffea > > R13: ffff81007eb04840 R14: 0000000000000000 R15: 00000000000d7000 > > FS: 00002acdf4b126d0(0000) GS:ffffffff80610000(0000) knlGS:00000000f73456b0 > > CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > > CR2: ffffffff004c82c8 CR3: 0000000063292000 CR4: 00000000000006e0 > > Process emake (pid: 24497, threadinfo ffff81005db68000, task ffff81001b7f6040) > > Stack: ffff810010252528 ffffffff8020de0b 0000000000000000 0000000044fc8613 > > 0000000000000000 0000000000000071 0000000000000002 ffff8100167b2a70 > > 0000000000000071 0000000000000000 00000000000000d7 ffffffff8022ca5e > > Call Trace: > > [<ffffffff8020de0b>] do_mmap_pgoff+0x4bb/0x790 > > [<ffffffff8022ca5e>] sys_newfstat+0x2e/0x50 > > [<ffffffff80224965>] sys_mmap+0xa5/0x100 > > [<ffffffff8026255e>] system_call+0x7e/0x83 > > Code: 48 83 78 08 00 74 22 f6 47 2e 04 75 0f 48 8b 77 10 48 8b 7f > > Are you able to reproduce this problem again ?
Unfortunately not. But I guess it must have been a hardware problem. I switched off CPU frequency scaling and the system is running stable since then. If the problem occurs again I will let you know. Thanks.
> It looks like the problem is due to bogus a_ops .. > > if (!mapping->a_ops->readpage) > ^^^^^^ > failing instruction is: > > 37c: 48 83 78 08 00 cmpq $0x0,0x8(%rax) > > (a_ops->readpage) derefence. -- Markus - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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