I'm still trying to get a reliable scenario which either crashes UML or let simple 1 linux process at the host system runs at 100%.
Till now I only know that it happens if a have apache2 running at the UML and fetch some http pages (either the apache manual itself or something from phpsysinfo via firefox (not via wget !). The hostfs feature seems to be involved too. Today the current git kernel (linux-v3.6-10970-g4d7127d ) crashes within an unstable Gentoo Linux UML with : ... * Starting local [ ok ] Kernel panic - not syncing: BUG! 083d7178: [<08322f18>] dump_stack+0x22/0x24 083d7190: [<08322fcc>] panic+0x7a/0x181 083d71b8: [<08238d21>] blk_flush_plug_list+0x201/0x220 083d71f8: [<08327202>] schedule+0x52/0x70 083d720c: [<08327ab5>] __down_read+0x75/0xa0 083d7238: [<08326a11>] down_read+0x11/0x20 083d7244: [<0806205f>] handle_page_fault+0x7f/0x270 083d7288: [<080623e1>] segv+0x161/0x2b0 083d7338: [<08062583>] segv_handler+0x53/0x90 083d7360: [<08073b77>] sig_handler_common+0x57/0xe0 083d75e4: [<08073d25>] sig_handler+0x45/0x60 083d75f4: [<0807383b>] hard_handler+0x6b/0xb0 083d761c: [<b77e240c>] 0xb77e240c 083d7758: [<08326a11>] down_read+0x11/0x20 083d7764: [<0806205f>] handle_page_fault+0x7f/0x270 083d77a8: [<080623e1>] segv+0x161/0x2b0 083d7858: [<08062583>] segv_handler+0x53/0x90 083d7880: [<08073b77>] sig_handler_common+0x57/0xe0 083d7b04: [<08073d25>] sig_handler+0x45/0x60 083d7b14: [<0807383b>] hard_handler+0x6b/0xb0 083d7b3c: [<b77e240c>] 0xb77e240c /home/tfoerste/workspace/bin/start_uml.sh: line 97: 22043 Segmentation fault (core dumped) $LINUX earlyprintk ubda=$ROOT_FS ubdb=$SWAP_FS $CD eth0=$NET mem=256M $TTY umid=uml "$@" The uml exe (linux-v3.6-10970-g4d7127d) can be delivered/examined if wanted. -- MfG/Sincerely Toralf Förster pgp finger print: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 7DB6 9DA3 ------------------------------------------------------------------------------ Don't let slow site performance ruin your business. Deploy New Relic APM Deploy New Relic app performance management and know exactly what is happening inside your Ruby, Python, PHP, Java, and .NET app Try New Relic at no cost today and get our sweet Data Nerd shirt too! http://p.sf.net/sfu/newrelic-dev2dev _______________________________________________ User-mode-linux-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
