Hi, looks like the UML got SIGSEGV when running without a control terminal (via a daemon).
Any idea on how to avoid this? # cat /etc/init.d/uml start() { chmod 755 /mnt/tests/kernel/misc/uml/kernel32-2.6.31.5 /mnt/tests/kernel/misc/uml/kernel32-2.6.31.5 ubda=/mnt/tests/kernel/misc/uml/Fedora10-x86-root_fs mem=128M } ... # See how we were called. case "$1" in start) start ;; ... # service uml start Locating the bottom of the address space ... 0x10000 Locating the top of the address space ... 0xffffd000 Core dump limits : soft - 0 hard - NONE Checking that ptrace can change system call numbers...OK Checking syscall emulation patch for ptrace...OK Checking advanced syscall emulation patch for ptrace...OK Checking for tmpfs mount on /dev/shm...OK Checking PROT_EXEC mmap in /dev/shm/...OK Checking for the skas3 patch in the host: - /proc/mm...not found: No such file or directory - PTRACE_FAULTINFO...not found - PTRACE_LDT...not found UML running in SKAS0 mode Adding 28393472 bytes to physical memory to account for exec-shield gap Terminated Adding a strace show the following, open("/dev/ptmx", O_RDWR) = 4 ioctl(4, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo ...}) = 0 ioctl(4, TIOCGPTN, [4]) = 0 stat64("/dev/pts/4", {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 4), ...}) = 0 statfs("/dev/pts/4", {f_type="DEVPTS_SUPER_MAGIC", f_bsize=0, f_blocks=0, f_bfree=0, f_bavail=1095216660480, f_files=4096, f_ffree=0, f_fsid={0, 0}, f_namelen=599752140905815076, f_frsize=17319714480}) = 0 ioctl(4, TIOCSPTLCK, [0]) = 0 ioctl(4, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo ...}) = 0 ioctl(4, TIOCGPTN, [4]) = 0 stat64("/dev/pts/4", {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 4), ...}) = 0 open("/dev/pts/4", O_RDWR|O_NOCTTY) = 5 ioctl(4, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo ...}) = 0 ioctl(4, SNDCTL_TMR_STOP or TCSETSW, {B38400 -opost -isig -icanon -echo ...}) = 0 fcntl64(4, F_GETFL) = 0x2 (flags O_RDWR) fcntl64(4, F_SETFL, O_RDWR|O_NONBLOCK|O_ASYNC) = 0 getpid() = 31182 fcntl64(4, F_SETOWN, 31182) = 0 fcntl64(5, F_SETFL, O_RDWR|O_NONBLOCK) = 0 rt_sigaction(SIGIO, NULL, {0x180000000806e2e4, [], 0}, 8) = 0 rt_sigaction(SIGIO, {0x180000000804bccc, [], SA_NOCLDSTOP|SA_NOCLDWAIT|0x5400}, NULL, 8) = 0 close(5) = 0 close(4) = 0 close(5) = -1 EBADF (Bad file descriptor) rt_sigaction(SIGIO, {0x180000000806e2e4, [], SA_STACK|0x52bdb0}, NULL, 8) = 0 io_setup(256, {4151672832}) = 0 clone(child_stack=0x10467fd4, flags=CLONE_VM|CLONE_FILES) = 31189 --- SIGSEGV (Segmentation fault) @ 0 (0) --- rt_sigaction(SIGSEGV, {0x1000000000000000, [], SA_STACK|0x2d19c8}, {0x480000000806e2e4, ~[], 0}, 8) = 0 rt_sigaction(SIGTERM, {0x1000000000000001, [], 0}, {0xc00000000806bae4, [RT_2 RT_4], SA_STACK|SA_SIGINFO|SA_NOCLDSTOP|SA_NOCLDWAIT|0x4ae8e8}, 8) = 0 kill(0, SIGTERM <unfinished ...> Terminated Thanks, CAI Qian ------------------------------------------------------------------------------ This SF.Net email is sponsored by the Verizon Developer Community Take advantage of Verizon's best-in-class app development support A streamlined, 14 day to market process makes app distribution fast and easy Join now and get one step closer to millions of Verizon customers http://p.sf.net/sfu/verizon-dev2dev _______________________________________________ User-mode-linux-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user