I see this also. host is Fedora Core 4 guest is a 2.4 kernel
It seems to die in modify_ldt(), the libc function just after returning from the modify_ldt() system call, if I understand the traces.
This doesn't happen using the same qemu with kqemu-1.3.0pre5. Attached are gdb and strace output, in case they can tell something more... Regards, Lorenzo Christian MICHON wrote:
Host: winXP pro Guest: Redhat 7.2 when kqemu (user mode) is active, "sleep 1" segfaults each time. With kqemu disabled, no problem -- Christian
execve("/bin/sleep", ["sleep", "1"], [/* 21 vars */]) = 0 uname({sys="Linux", node="MCP-1-0", ...}) = 0 brk(0) = 0x804b310 open("/etc/ld.so.preload", O_RDONLY) = -1 ENOENT (No such file or directory) open("i686/mmx/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) open("i686/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) open("mmx/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) open("libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) open("/usr/local/lib/i686/mmx/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) stat64("/usr/local/lib/i686/mmx", 0xbffff200) = -1 ENOENT (No such file or directory) open("/usr/local/lib/i686/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) stat64("/usr/local/lib/i686", 0xbffff200) = -1 ENOENT (No such file or directory) open("/usr/local/lib/mmx/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) stat64("/usr/local/lib/mmx", 0xbffff200) = -1 ENOENT (No such file or directory) open("/usr/local/lib/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) stat64("/usr/local/lib", {st_mode=S_IFDIR|0755, st_size=3072, ...}) = 0 open("/etc/ld.so.cache", O_RDONLY) = 3 fstat64(3, {st_mode=S_IFREG|0644, st_size=11583, ...}) = 0 mmap2(NULL, 11583, PROT_READ, MAP_PRIVATE, 3, 0) = 0x40016000 close(3) = 0 open("/lib/libm.so.6", O_RDONLY) = 3 read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\3005\0"..., 1024) = 1024 fstat64(3, {st_mode=S_IFREG|0644, st_size=152872, ...}) = 0 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x40019000 mmap2(NULL, 137984, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x4001a000 mprotect(0x4003b000, 2816, PROT_NONE) = 0 mmap2(0x4003b000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x20) = 0x4003b000 close(3) = 0 open("i686/mmx/librt.so.1", O_RDONLY) = -1 ENOENT (No such file or directory) open("i686/librt.so.1", O_RDONLY) = -1 ENOENT (No such file or directory) open("mmx/librt.so.1", O_RDONLY) = -1 ENOENT (No such file or directory) open("librt.so.1", O_RDONLY) = -1 ENOENT (No such file or directory) open("/usr/local/lib/librt.so.1", O_RDONLY) = -1 ENOENT (No such file or directory) open("/lib/librt.so.1", O_RDONLY) = 3 read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\320\33"..., 1024) = 1024 fstat64(3, {st_mode=S_IFREG|0644, st_size=29700, ...}) = 0 mmap2(NULL, 74584, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x4003c000 mprotect(0x40043000, 45912, PROT_NONE) = 0 mmap2(0x40043000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x6) = 0x40043000 mmap2(0x40044000, 41816, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x40044000 close(3) = 0 open("i686/mmx/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) open("i686/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) open("mmx/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) open("libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) open("/usr/local/lib/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) open("/lib/libc.so.6", O_RDONLY) = 3 read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0 Z\1\000"..., 1024) = 1024 fstat64(3, {st_mode=S_IFREG|0755, st_size=1356440, ...}) = 0 mmap2(NULL, 1300612, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x4004f000 mprotect(0x40186000, 26756, PROT_NONE) = 0 mmap2(0x40186000, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x136) = 0x40186000 mmap2(0x4018a000, 10372, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x4018a000 close(3) = 0 open("i686/mmx/libpthread.so.0", O_RDONLY) = -1 ENOENT (No such file or directory) open("i686/libpthread.so.0", O_RDONLY) = -1 ENOENT (No such file or directory) open("mmx/libpthread.so.0", O_RDONLY) = -1 ENOENT (No such file or directory) open("libpthread.so.0", O_RDONLY) = -1 ENOENT (No such file or directory) open("/usr/local/lib/libpthread.so.0", O_RDONLY) = -1 ENOENT (No such file or directory) open("/lib/libpthread.so.0", O_RDONLY) = 3 read(3, "[EMAIL PROTECTED]"..., 1024) = 1024 fstat64(3, {st_mode=S_IFREG|0644, st_size=61612, ...}) = 0 mmap2(NULL, 327296, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x4018d000 mprotect(0x4019a000, 274048, PROT_NONE) = 0 mmap2(0x4019a000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0xd) = 0x4019a000 mmap2(0x4019b000, 269952, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x4019b000 close(3) = 0 munmap(0x40016000, 11583) = 0 modify_ldt(1, {entry_number:0, base_addr:0x4019a060, limit:1048575, seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1, seg_not_present:0, useable:1}, 16) = 0 --- SIGSEGV (Segmentation fault) @ 0 (0) --- +++ killed by SIGSEGV +++
[EMAIL PROTECTED]:~# gdb /bin/sleep GNU gdb 6.0 (MontaVista 6.0-8.0.7.0300532 2003-12-24) Copyright 2003 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "i686-hardhat-linux"...(no debugging symbols found)... (gdb) r 1 Starting program: /bin/sleep 1 (no debugging symbols found)...(no debugging symbols found)...(no debugging symbols found)...(no debugging symbols found)...(no debugging symbols found)... Program received signal SIGSEGV, Segmentation fault. 0x4014f794 in modify_ldt () from /lib/libc.so.6 (gdb)
_______________________________________________ Qemu-devel mailing list Qemu-devel@nongnu.org http://lists.nongnu.org/mailman/listinfo/qemu-devel