On Wednesday 28 February 2007 02:00, Russell Robinson wrote: > Hi, > > I have a Centos 4.4 host (dual core) and I've built a Centos 4.4 root > file system for UML. > > The UML kernel is 2.6.19-rc5 from the UML website. > > The UML was started with 64MB RAM and 128MB swap space. > > It was idle, except it may have been running its daily cron tasks. > > Here's the crash info: > > CentOS release 4.4 (Final) > Kernel 2.6.19-rc5 on an i686 > > uml0 login: > EIP: 0073:[<009437a2>] CPU: 0 Not tainted ESP: 007b:bf662724 EFLAGS: > 00000246 Not tainted > EAX: ffffffda EBX: 00000003 ECX: 0804d038 EDX: 00000400 > ESI: 0804b38b EDI: 00000400 EBP: bf662748 DS: 007b ES: 007b > 0a7a3a58: [<0806dbe8>] show_regs+0xb4/0xb9 > 0a7a3a84: [<0805a50b>] segv+0x125/0x26a > 0a7a3b28: [<0805a3e1>] segv_handler+0x55/0x5a > 0a7a3b48: [<0806b076>] sig_handler_common_skas+0xc6/0xe1 > 0a7a3b70: [<08067b51>] sig_handler+0x35/0x45 > 0a7a3b88: [<08069e12>] hard_handler+0x12/0x18 > 0a7a3b98: [<00983898>] 0x983898
This line is bogus: > 0a7a3e78: [<0806ba17>] uml_map_start+0x32/0xf8 This is probably the real source of the crash, from the stack trace. It is used in all sort of pseudo-files (like those in /proc), so I would say this bug seems more likely to be a mainline one; and it is unclear from the trace where the crash may have really happened. Upgrade to 2.6.19 + latest stable patch instead of rc5, and if it happens again (or if you can reproduce it) we can debug it. > 0a7a3e9c: [<080bc407>] seq_read+0xca/0x24a > 0a7a3ed0: [<080a6b8b>] vfs_read+0x9c/0x146 > 0a7a3efc: [<080a6eba>] sys_read+0x3a/0x61 > 0a7a3f28: [<0805b3f2>] handle_syscall+0x86/0xa0 > 0a7a3f74: [<0806a6a2>] handle_trap+0xd8/0xe1 > 0a7a3f90: [<0806aa92>] userspace+0x123/0x173 > 0a7a3fdc: [<0805b131>] fork_handler+0x74/0x7c > 0a7a3ffc: [<a55a5a5a>] 0xa55a5a5a > > Kernel panic - not syncing: Kernel mode fault at addr 0x170fc2cd, ip > 0x9437a2 > > Any ideas? -- Inform me of my mistakes, so I can add them to my list! Paolo Giarrusso, aka Blaisorblade http://www.user-mode-linux.org/~blaisorblade Chiacchiera con i tuoi amici in tempo reale! http://it.yahoo.com/mail_it/foot/*http://it.messenger.yahoo.com ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ User-mode-linux-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
