2011/8/1 Toralf Förster <toralf.foers...@gmx.de>: > Hello, > > this is a follow-up of [uml-user] v3.0-6726-g250f8e3 core dumped in > arch/um/os-Linux/sys-i386/task_size.c:31 > > The current UML kernel v3.0-6862-g3da3f87 core dumped with this command line : > $ ./linux bda=/home/tfoerste/virtual/uml/gentoo_root_fs > ubdb=/home/tfoerste/virtual/uml/swap_fs eth0=tuntap,tap1,7a:cf:14:11:67:01, > mem=128M > con0=xterm con1=xterm con12=xterm umid=uml > > I used gdb to get a meaningful back trace from the core file and run the > following gdb commands before : > > handle SIGSEGV pass nostop noprint > handle SIGUSR1 pass nostop noprint > > It follows the log from gdb - BTW please Cc: me b/c I'm not subscribed. > > > Reading symbols from /home/tfoerste/devel/linux/linux...done. > [New Thread 3485] > > warning: Can't read pathname for load map: Input/output error. > Reading symbols from /lib/libutil.so.1...Reading symbols from > /usr/lib/debug/lib/libutil-2.12.2.so.debug...done. > done. > Loaded symbols for /lib/libutil.so.1 > Reading symbols from /lib/libc.so.6...Reading symbols from > /usr/lib/debug/lib/libc-2.12.2.so.debug...done. > done. > Loaded symbols for /lib/libc.so.6 > Reading symbols from /lib/ld-linux.so.2...Reading symbols from > /usr/lib/debug/lib/ld-2.12.2.so.debug...done. > done. > Loaded symbols for /lib/ld-linux.so.2 > Reading symbols from /lib/libnss_compat.so.2...Reading symbols from > /usr/lib/debug/lib/libnss_compat-2.12.2.so.debug...done. > done. > Loaded symbols for /lib/libnss_compat.so.2 > Reading symbols from /lib/libnsl.so.1...Reading symbols from > /usr/lib/debug/lib/libnsl-2.12.2.so.debug...done. > done. > Loaded symbols for /lib/libnsl.so.1 > Reading symbols from /lib/libnss_nis.so.2...Reading symbols from > /usr/lib/debug/lib/libnss_nis-2.12.2.so.debug...done. > done. > Loaded symbols for /lib/libnss_nis.so.2 > Reading symbols from /lib/libnss_files.so.2...Reading symbols from > /usr/lib/debug/lib/libnss_files-2.12.2.so.debug...done. > done. > Loaded symbols for /lib/libnss_files.so.2 > Core was generated by `./linux bda=/home/tfoerste/virtual/uml/gentoo_root_fs > ubdb=/home/tfoerste/virtu'. > Program terminated with signal 6, Aborted. > #0 0xb773f424 in __kernel_vsyscall () > [?1034h(gdb) handle SIGSEGV pass nostop noprint > Signal Stop Print Pass to program Description > SIGSEGV No No Yes Segmentation fault > (gdb) handle SIGUSR1 pass nostop noprint > Signal Stop Print Pass to program Description > SIGUSR1 No No Yes User defined signal 1 > (gdb) thread apply all bt > > Thread 1 (Thread 3485): > #0 0xb773f424 in __kernel_vsyscall () > #1 0xb75ecb46 in kill () at ../sysdeps/unix/syscall-template.S:82 > #2 0x08073485 in uml_abort () at arch/um/os-Linux/util.c:95 > #3 0x08073565 in os_dump_core () at arch/um/os-Linux/util.c:140 > #4 0x080618b7 in panic_exit (self=0x83572d8, unused1=0, unused2=0x8373700) > at arch/um/kernel/um_arch.c:233 > #5 0x080a418c in notifier_call_chain (nl=<value optimized out>, val=<value > optimized out>, v=0x6, nr_to_call=-1, > nr_calls=0x0) at kernel/notifier.c:93 > #6 0x080a4203 in __atomic_notifier_call_chain (nh=0x83736c0, val=0, > v=0x8373700) at kernel/notifier.c:182 > #7 atomic_notifier_call_chain (nh=0x83736c0, val=0, v=0x8373700) at > kernel/notifier.c:191 > #8 0x082ca8d8 in panic (fmt=0x831c83c "Segfault with no mm") at > kernel/panic.c:100 > #9 0x0806158f in segv (fi=<incomplete type>, ip=137152102, is_user=0, > regs=0x8355a00) at arch/um/kernel/trap.c:193 > #10 0x08061647 in segv_handler (sig=11, regs=0x8355a00) at > arch/um/kernel/trap.c:169 > #11 0x080720d4 in sig_handler_common (sig=11, sc=0x8355ab4) at > arch/um/os-Linux/signal.c:49 > #12 0x080722b2 in sig_handler (sig=0, sc=0x8355ab4) at > arch/um/os-Linux/signal.c:226 > #13 0x080724ec in handle_signal (sig=6, sc=0x8355ab4) at > arch/um/os-Linux/signal.c:158 > #14 0x08074948 in hard_handler (sig=11) at > arch/um/os-Linux/sys-i386/signal.c:12 > #15 <signal handler called> > #16 __list_add (sem=0x8368df4, subclass=0) at include/linux/list.h:44 > #17 list_add_tail (sem=0x8368df4, subclass=0) at include/linux/list.h:76 > #18 __down_write_nested (sem=0x8368df4, subclass=0) at > lib/rwsem-spinlock.c:232 > #19 0x082cc6c9 in __down_write (sem=0x8368df4) at lib/rwsem-spinlock.c:252 > #20 0x082cbec1 in down_write (sem=0x8368df4) at kernel/rwsem.c:51 > #21 0x081d95e3 in exit_shm (task=0x11872c00) at ipc/shm.c:308 > #22 0x080881ac in do_exit (code=0) at kernel/exit.c:983 > #23 0x08098254 in ____call_usermodehelper (data=0x11864c80) at > kernel/kmod.c:187 > #24 0x08070cfe in run_kernel_thread (fn=0x8098150 <____call_usermodehelper>, > arg=0x11864c80, jmp_ptr=0x11872e40) > at arch/um/os-Linux/process.c:268 > #25 0x0805efd5 in new_thread_handler () at arch/um/kernel/process.c:153 > #26 0x00000000 in ?? () > (gdb) quit
Please a bit more details. When does it crash? During start-up? What exactly is UML's output? -- Thanks, //richard ------------------------------------------------------------------------------ Got Input? Slashdot Needs You. Take our quick survey online. Come on, we don't ask for help often. Plus, you'll get a chance to win $100 to spend on ThinkGeek. http://p.sf.net/sfu/slashdot-survey _______________________________________________ User-mode-linux-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
