From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sc8-sf-mx2-b.sourceforge.net ([10.3.1.12] helo=sc8-sf-mx2.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1CZD1o-0004UK-6m for user-mode-linux-devel@lists.sourceforge.net; Tue, 30 Nov 2004 10:47:08 -0800 Received: from smtp002.mail.ukl.yahoo.com ([217.12.11.33]) by sc8-sf-mx2.sourceforge.net with smtp (Exim 4.41) id 1CZD1m-0003gl-TS for user-mode-linux-devel@lists.sourceforge.net; Tue, 30 Nov 2004 10:47:08 -0800 From: Blaisorblade Subject: Re: [uml-devel] 2.6.9-bb3 on 2.6.9 host problem - triggering a host bug? References: <200411292315.25368.blaisorblade_spam@yahoo.it> In-Reply-To: <200411292315.25368.blaisorblade_spam@yahoo.it> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200411301950.13529.blaisorblade_spam@yahoo.it> Sender: user-mode-linux-devel-admin@lists.sourceforge.net Errors-To: user-mode-linux-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: The user-mode Linux development list List-Post: List-Help: List-Subscribe: , List-Archive: Date: Tue, 30 Nov 2004 19:50:13 +0100 To: user-mode-linux-devel@lists.sourceforge.net On Monday 29 November 2004 23:15, Blaisorblade wrote: I pressed Enter before filling in details - this is what I get on some UML versions at startup. Specifically, I get it on -bb3, and on versions based on it, on startup. I've tried removing the patches I've added to -bb3 and it still does not work, which is not nice. However, I've now discovered that it only happens when CONFIG_STATIC_LINK is enabled - that makes the kernel die. The interesting thing is that it becomes unkillable - but at least we have some clue that this one is not a new bug in -bb3 (at least it seems). I'll go reproducing it in vanilla 2.6.9 if I have time. > Checking for the skas3 patch in the host...found > Checking for /proc/mm...found > Checking PROT_EXEC mmap in /tmp...OK > Linux version 2.6.9-skas3-v7-bb3nobodo-rework-hang (paolo@zion) (gcc > version 3.3.2 (Mandrake Linux 10.0 3.3.2-6mdk)) #9 FriNov 26 03:51:10 CET > 2004 > Built 1 zonelists > Kernel command line: ubd0s=slack90.rootfs rootfs=/dev/ubd0 > ubd7=slack90.swapfs mem=64m eth0=tuntap,,,192.168.0.100 > UML_XDISPLAY=192.168.0.100:0 > UML_IP=192.168.0.3 con=xterm con0=fd:0,fd:1 root=98:0 > PID hash table entries: 512 (order: 9, 8192 bytes) > Dentry cache hash table entries: 16384 (order: 4, 65536 bytes) > Inode-cache hash table entries: 8192 (order: 3, 32768 bytes) > Memory: 61792k available > Kernel panic - not syncing: Segfault with no mm > > EIP: 0000:[<00000000>] CPU: 0 Not tainted EFLAGS: 00000000 > Not tainted > EAX: 00000000 EBX: 00000000 ECX: 00000000 EDX: 00000000 > ESI: 00000000 EDI: 00000000 EBP: 00000000 DS: 0000 ES: 0000 > Call Trace: > [<080791d3>] printk+0x13/0x20 > [<0808bbd6>] notifier_call_chain+0x26/0x50 > [<08078468>] panic+0x58/0xc0 > [<0805f2a2>] segv+0x192/0x1d0 > [<081e2157>] sigemptyset+0x17/0x30 > [<0805d483>] change_signals+0x43/0x70 > [<0805f673>] segv_handler+0xc3/0xd0 > [<0805d4cd>] unblock_signals+0xd/0x10 > [<08061cc4>] sig_handler_common_skas+0xa4/0xc0 > [<080616a0>] start_kernel_proc+0x0/0x30 > [<0805f6a3>] sig_handler+0x13/0x20 > [<081e1e88>] __restore+0x0/0x8 > [<080616a0>] start_kernel_proc+0x0/0x30 > [<0804871d>] start_kernel+0xfd/0x1b0 > [<0805d509>] enable_mask+0x39/0x50 > [<081e2157>] sigemptyset+0x17/0x30 > [<081e1e88>] __restore+0x0/0x8 > [<08071158>] file_io+0x28/0x80 > [<08071158>] file_io+0x28/0x80 > [<0805d509>] enable_mask+0x39/0x50 > [<081e2157>] sigemptyset+0x17/0x30 > [<0805d509>] enable_mask+0x39/0x50 > [<081e2157>] sigemptyset+0x17/0x30 > [<08071158>] file_io+0x28/0x80 > [<0805d509>] enable_mask+0x39/0x50 > [<081e2157>] sigemptyset+0x17/0x30 > [<0805d5f0>] set_signals+0x80/0x180 > [<08079727>] release_console_sem+0x1f7/0x270 > [<080795f5>] release_console_sem+0xc5/0x270 > [<080793a5>] vprintk+0x1c5/0x2e0 > [<080791d3>] printk+0x13/0x20 > [<0804cfb0>] free_all_bootmem+0x10/0x20 > [<0805969a>] mem_init+0xfa/0x110 > [<08059662>] mem_init+0xc2/0x110 > [<080616c7>] start_kernel_proc+0x27/0x30 > [<0805ad0a>] run_kernel_thread+0x3a/0x50 > [<080616a0>] start_kernel_proc+0x0/0x30 > [<0805acef>] run_kernel_thread+0x1f/0x50 > [<080616a0>] start_kernel_proc+0x0/0x30 > [<080613c7>] new_thread_handler+0x67/0xa0 > [<080616a0>] start_kernel_proc+0x0/0x30 > [<081e1e88>] __restore+0x0/0x8 > [<081e20e1>] kill+0x11/0x20 -- Paolo Giarrusso, aka Blaisorblade Linux registered user n. 292729 http://www.user-mode-linux.org/~blaisorblade ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. 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