Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751121AbWEQCjt (ORCPT ); Tue, 16 May 2006 22:39:49 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751162AbWEQCjt (ORCPT ); Tue, 16 May 2006 22:39:49 -0400 Received: from wx-out-0102.google.com ([66.249.82.192]:39394 "EHLO wx-out-0102.google.com") by vger.kernel.org with ESMTP id S1751121AbWEQCjs (ORCPT ); Tue, 16 May 2006 22:39:48 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:date:from:to:cc:subject:message-id:references:mime-version:content-type:content-disposition:in-reply-to:user-agent; b=B0tHe+Sgny6F0deFHLBWU52obMemrwXYhShT1VBV03amuKIBrCHaFiCray0WpKcX9ZgyCJl0eNHx/cZoCGPstGbo6V7YqGak4jVvIkQygHpmOjr48ZYFwNl1uhHBIODMx/sLtlumbfqnQhr1olxtyZ+ygdBjk/KG/KtxPrZKd/M= Date: Tue, 16 May 2006 23:39:42 -0300 From: Alberto Bertogli To: Jeff Dike Cc: user-mode-linux-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org Subject: Re: [uml-devel] [UML] Problems building and running 2.6.17-rc4 on x86-64ync-mailbox>

set editor=vim Message-ID: <20060517023942.GI9066@gmail.com> References: <20060514182541.GA4980@gmail.com> <20060515033919.GD21383@ccure.user-mode-linux.org> <20060515152958.GA4553@gmail.com> <20060516191244.GB6337@ccure.user-mode-linux.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060516191244.GB6337@ccure.user-mode-linux.org> User-Agent: Mutt/1.5.11 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3574 Lines: 80 On Tue, May 16, 2006 at 03:12:44PM -0400, Jeff Dike wrote: > On Mon, May 15, 2006 at 12:29:58PM -0300, Alberto Bertogli wrote: > > Sure, here it is: > > (gdb) disas stub_segv_handler > > Sorry, I misread the error message and asked for the wrong thing. > Your UML is seeing a process segfault during a system call, before the > SIGTRAP expected at the end of the system call. I don't know what's > happening there. > > Can you apply the following patch, which will just give you a register > dump of the process, and send me the output? Here it is. While the patch worked, it was for 2.6.16, and I'm using 2.6.17-rc4, I hope that's not a problem. [42949373.940000] EXT3-fs: mounted filesystem with ordered data mode. [42949373.940000] VFS: Mounted root (ext3 filesystem) readonly. [42949374.050000] Stub registers - [42949374.050000] 0 - 8 [42949374.050000] 1 - 400040 [42949374.050000] 2 - 40001530 [42949374.050000] 3 - 2 [42949374.050000] 4 - fffffffd [42949374.050000] 5 - 7 [42949374.050000] 6 - 5 [42949374.050000] 7 - 37 [42949374.050000] 8 - 3 [42949374.050000] 9 - 20611 [42949374.050000] 10 - 0 [42949374.050000] 11 - 2d [42949374.050000] 12 - 11 [42949374.050000] 13 - 7f7f8d4539 [42949374.050000] 14 - 0 [42949374.050000] 15 - ffffffffffffffff [42949374.050000] 16 - 4000eae0 [42949374.050000] 17 - 33 [42949374.050000] 18 - 10246 [42949374.050000] 19 - 7f7f8d4498 [42949374.050000] 20 - 2b [42949374.050000] Kernel panic - not syncing: Kernel mode fault at addr 0x0, ip 0x4000f349 [42949374.050000] [42949374.050000] Modules linked in: [42949374.050000] Pid: 1, comm: init Not tainted 2.6.17-rc4 [42949374.050000] RIP: 0033:[<000000004000f349>] [42949374.050000] RSP: 0000007f7f8d4498 EFLAGS: 00000246 [42949374.050000] RAX: 0000000000000000 RBX: 0000007f7f8d44b0 RCX: ffffffffffffffff [42949374.050000] RDX: 0000007f7f8d4770 RSI: 0000000040010900 RDI: 0000007f7f8d44b0 [42949374.050000] RBP: 0000000000402240 R08: 0000000000000000 R09: 0000000000000000 [42949374.050000] R10: 0000000000000064 R11: 0000000000000246 R12: 0000007f7f8d4640 [42949374.050000] R13: 0000000040001530 R14: 0000000000400040 R15: 0000000000000008 [42949374.050000] Call Trace: [42949374.050000] 60433888: [<6001a10a>] panic_exit+0x2a/0x50 [42949374.050000] 60433898: [<60044acc>] notifier_call_chain+0x1c/0x30 [42949374.050000] 604338b8: [<600348cf>] panic+0xcf/0x170 [42949374.050000] 60433918: [<600285b4>] set_signals+0x14/0x30 [42949374.050000] 60433928: [<6001947b>] handle_page_fault+0x1bb/0x270 [42949374.050000] 60433998: [<600197b8>] segv+0x208/0x300 [42949374.050000] 60433a80: [<60019530>] segv_handler+0x0/0x80 [42949374.050000] 60433a98: [<600195ab>] segv_handler+0x7b/0x80 [42949374.050000] 60433ab8: [<6002ca18>] sig_handler_common_skas+0xe8/0x140 [42949374.050000] 60433ae8: [<6002873f>] sig_handler+0x5f/0x80 [42949374.050000] 60433c20: [<6001b450>] copy_chunk_to_user+0x0/0x40 [42949374.050000] 60433c88: [<6002b877>] ptrace_dump_regs+0x47/0x70 [42949374.050000] 60433dc0: [<60014010>] init+0x0/0x170 [42949374.050000] 60433dd8: [<6001a7a2>] new_thread_handler+0x102/0x140 [42949374.050000] Please let me know if there's anything else you want me to try. Thanks, Alberto - 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/