On 11/30/2013 03:51 PM, Richard Weinberger wrote: > On Sat, Nov 30, 2013 at 3:43 PM, Toralf Förster <toralf.foers...@gmx.de> > wrote: >> On 11/30/2013 03:37 PM, Toralf Förster wrote: >>> >>> Today I realized that a UML cores if I use the xterm for the in/out. >>> >>> I do usually use "con0=fd:0,fd:1 con=pts" to start a 32bit UML but because >>> the xterm way was fine during the past few weeks (yes, I know, it was >>> broken for a longer time before) and the only change yesterday was to >>> upgrade from vanilla kernel 3.12.1 to 3.12.2 I'm wondering if there's a >>> "suspicous" commit in that stable kernel which could be the reason ? >>> >>> >>> FWIW : >>> tfoerste@n22 ~ $ gdb --core=/mnt/ramdisk/core >>> /home/tfoerste/devel/linux/linux -n -batch -ex bt >>> [New LWP 29559] >>> Core was generated by `/home/tfoerste/devel/linux/linux earlyprintk >>> ubda=/home/tfoerste/virtual/uml/tr'. >>> Program terminated with signal 11, Segmentation fault. >>> #0 finish_task_switch (prev=0xffff9d2f, rq=<optimized out>) at >>> kernel/sched/core.c:1993 >>> 1993 prev_state = prev->state; >>> #0 finish_task_switch (prev=0xffff9d2f, rq=<optimized out>) at >>> kernel/sched/core.c:1993 >>> #1 0x08427418 in context_switch (next=<optimized out>, prev=0x46d9eecc, >>> rq=<optimized out>) at kernel/sched/core.c:2130 >>> #2 __schedule () at kernel/sched/core.c:2568 >>> #3 0x08427505 in schedule () at kernel/sched/core.c:2604 >>> #4 0x0808b912 in sigsuspend (set=0x46d9eecc) at kernel/signal.c:3559 >>> #5 0x080646d8 in winch_thread (arg=0x46d9eecc) at >>> arch/um/drivers/chan_user.c:210 >>> #6 0x083da38e in clone () >>> >>> >> >> Pff - glibc was upgrade from 2.15-r3 to 2.16 too - /me hope, that it is >> not glibc. >
I do believe that it is the glibc 2.16 upgrade. > Please more details. With 32 bit host kernel (3.12.1 and 3.12.2) and current tree of linus as guest kernel (tested older too:3.12, 3.11 ....) one of the linux processes crashes immediately using this start command : /home/tfoerste/devel/linux/linux earlyprintk ubda=/home/tfoerste/virtual/uml/trinity ubdb=/mnt/ramdisk/trinity_swap eth0=tuntap,tap0,72:ef:3d:9f:c3:5a mem=1025M con=xterm umid=uml_trinity rootfstype=ext4 > Does it crash immediately? yes, but it is "just" one (or more ?) of the processes, all other processes continues, which gave later a lot of different error pictures/hangs when the UML image (stable 32 bit Gentoo linux) tries to start services during boot. -- MfG/Sincerely Toralf Förster pgp finger print: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 7DB6 9DA3 ------------------------------------------------------------------------------ Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349351&iu=/4140/ostg.clktrk _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
