From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.11] helo=sc8-sf-mx1.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1AyJei-0005XV-Pq for User-mode-linux-devel@lists.sourceforge.net; Tue, 02 Mar 2004 15:50:32 -0800 Received: from zcars0m9.nortelnetworks.com ([47.129.242.157]) by sc8-sf-mx1.sourceforge.net with esmtp (Exim 4.30) id 1AyJS8-0006vh-1d for User-mode-linux-devel@lists.sourceforge.net; Tue, 02 Mar 2004 15:37:32 -0800 Message-ID: <40451AAB.5050304@nortelnetworks.com> From: Chris Friesen MIME-Version: 1.0 References: <4043B42A.10803@nortelnetworks.com> <200403020100.i2210dM9025649@ccure.user-mode-linux.org> <4044A368.8050406@nortelnetworks.com> <200403022054.i22KslWo003006@ccure.user-mode-linux.org> <40450A08.8090608@nortelnetworks.com> <200403022322.i22NM8Wo003853@ccure.user-mode-linux.org> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Subject: [uml-devel] Re: problems with UML -- new data with memory debugging on 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, 02 Mar 2004 18:37:15 -0500 To: Jeff Dike Cc: User-mode-linux-devel I turned on memory debugging, and got the following. Line 1439 in slab.c is /* Either write before start, or a double free. */ Here's the backtrace: Breakpoint 1, panic (fmt=0xa01e2d8a "kernel BUG at %s:%d!\n") at panic.c:60 60 bust_spinlocks(1); (gdb) bt #0 panic (fmt=0xa01e2d8a "kernel BUG at %s:%d!\n") at panic.c:60 #1 0xa002dc8a in kfree (objp=0xa032c89c) at slab.c:1439 #2 0xa0103ac8 in hostfs_read_super (sb=0xaf332400, data=0xaf036000, silent=0) at hostfs_kern.c:932 #3 0xa003cae9 in get_sb_nodev (fs_type=0xa022d62c, flags=0, dev_name=0xaf037000 "none", data=0xaf036000) at super.c:756 #4 0xa003cc82 in do_kern_mount (fstype=0xaf0d8000 "hostfs", flags=0, name=0xaf037000 "none", data=0xaf036000) at super.c:808 #5 0xa004fd62 in do_add_mount (nd=0xaefcbb94, type=0xaf0d8000 "hostfs", flags=0, mnt_flags=0, name=0xaf037000 "none", data=0xaf036000) at namespace.c:626 #6 0xa0050049 in do_mount (dev_name=0xaf037000 "none", dir_name=0xaff46000 "/vob/neptune", type_page=0xaf0d8000 "hostfs", flags=3236757504, data_page=0xaf036000) at namespace.c:740 #7 0xa0050416 in sys_mount (dev_name=0x8059e20 "none", dir_name=0x8059e30 "/vob/neptune", type=0x8059e48 "hostfs", flags=3236757504, data=0x8059eb8) at namespace.c:853 #8 0xa00da41c in execute_syscall_tt (r=0xaefc8274) at syscall_kern.c:120 #9 0xa00da4d9 in syscall_handler_tt (sig=12, regs=0xaefc8274) at syscall_user.c:37 #10 0xa00db5eb in sig_handler_common_tt (sig=12, sc_ptr=0xaefcbd28) at trap_user.c:37 #11 0xa00d7d0d in sig_handler (sig=12, sc= ---Type to continue, or q to quit--- {gs = 0, __gsh = 0, fs = 0, __fsh = 0, es = 43, __esh = 0, ds = 43, __dsh = 0, edi = 134586040, esi = 3236757504, ebp = 2684353448, esp = 2684353408, ebx = 134585888, edx = 134585928, ecx = 134585904, eax = 4294967258, trapno = 14, err = 4, eip = 1074791518, cs = 35, __csh = 0, eflags = 582, esp_at_signal = 2684353408, ss = 43, __ssh = 0, fpstate = 0xaefcbd80, oldmask = 134283264, cr2 = 1074791488}) at trap_user.c:101 #12 #13 0x4010045e in ?? () #14 0x0804a8b8 in ?? () #15 0x0804b4d1 in ?? () #16 0x0804c125 in ?? () #17 0x0804cf1d in ?? () #18 0x4002f9a7 in ?? () -- Chris Friesen | MailStop: 043/33/F10 Nortel Networks | work: (613) 765-0557 3500 Carling Avenue | fax: (613) 765-2986 Nepean, ON K2H 8E9 Canada | email: cfriesen@nortelnetworks.com ------------------------------------------------------- SF.Net is sponsored by: Speed Start Your Linux Apps Now. Build and deploy apps & Web services for Linux with a free DVD software kit from IBM. Click Now! http://ads.osdn.com/?ad_id=1356&alloc_id=3438&op=click _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel