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On Wed, 21 Jul 2004 14:54:51 +0000 (UTC) |
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Mattia Dongili <dongili@××××××××.it> wrote: |
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|
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> <pageexec@...> writes: |
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> |
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> > |
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> > > > Thanks for your help everyone, should I still submit a bug |
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> > > > report? |
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> [...] |
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> > |
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> > well, i don't actually know if the problem is with cpufreqd or the |
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> > toolchain (PIE enforcement), better not rush with that bugreport |
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> > upstream (unless they're interested in debugging it nevertheless . |
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> |
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> here I am :) I had a nice irc chat on #gentoo-hardened today. |
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> I'm in touch with one of the irc people, it seems he can help |
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> in debugging, otherwise I'll need some time to setup a |
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> gentoo-hardened box (and read some docs). |
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> |
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> If somebody could file a detailed bug report I'll have a |
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> starting point. |
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> Also: I'm subscribed to the list now. |
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> |
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> thanks |
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> -- |
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> mattia |
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> |
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> |
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> |
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> -- |
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> gentoo-hardened@g.o mailing list |
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> |
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|
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Hi Mattia, |
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|
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I posted the original query on this, appreciate your input! Afraid I'm |
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not the most useful person to help you on debugging but I'll provide |
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what information I can, if there's anything you want tried I'll be glad |
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to help. |
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|
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I was holding back on posting a bug report in case anyone better |
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identified the source of the problem, though wouldn't be sure what to |
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usefully include anyway beyond what's been covered here. I've reposted |
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the strace and gdb output below (though you've probably got them from |
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the archives), since last posting I've tried cpufreqd-1.1.2 (from |
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portage) and it still segfaults on startup with PIE enabled. If there's |
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specific info you need let me know and I'll add it to a bug report. |
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|
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Many thanks, |
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|
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Barry |
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|
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|
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execve("/usr/sbin/cpufreqd", ["/usr/sbin/cpufreqd"], [/* 31 vars */]) = |
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0 uname({sys="Linux", node="tin", ...}) = 0 |
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brk(0) = 0x800075e0 |
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open("/etc/ld.so.preload", O_RDONLY) = -1 ENOENT (No such file or |
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directory) open("/etc/ld.so.cache", O_RDONLY) = 3 |
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fstat64(3, {st_mode=S_IFREG|0644, st_size=31190, ...}) = 0 |
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mmap2(NULL, 31190, PROT_READ, MAP_PRIVATE, 3, 0) = 0x40014000 |
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close(3) = 0 |
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open("/lib/libdl.so.2", O_RDONLY) = 3 |
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read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\\\33\0"..., |
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512) = 512 fstat64(3, {st_mode=S_IFREG|0755, st_size=10452, ...}) = 0 |
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mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, |
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0) = 0x4001c000 mmap2(NULL, 12072, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, |
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0) = 0x4001d000 mmap2(0x4001f000, 4096, PROT_READ|PROT_WRITE, |
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MAP_PRIVATE|MAP_FIXED, 3, 0x1) = 0x4001f000 close(3) |
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= 0 open("/lib/libc.so.6", O_RDONLY) = 3 |
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read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0001Y\1\000"..., |
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512) = 512 fstat64(3, {st_mode=S_IFREG|0755, st_size=1182840, ...}) = 0 |
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mmap2(NULL, 1103620, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = |
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0x40020000 mmap2(0x40128000, 12288, PROT_READ|PROT_WRITE, |
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MAP_PRIVATE|MAP_FIXED, 3, 0x107) = 0x40128000 mmap2(0x4012b000, 9988, |
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PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = |
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0x4012b000 close(3) = 0 |
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munmap(0x40014000, 31190) = 0 |
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open("/dev/urandom", O_RDONLY) = 3 |
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read(3, "\17;\256\334", 4) = 4 |
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close(3) = 0 |
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brk(0) = 0x800075e0 |
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brk(0x800285e0) = 0x800285e0 |
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brk(0) = 0x800285e0 |
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brk(0x80029000) = 0x80029000 |
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stat64("/proc/cpufreq", 0xbffff92c) = -1 ENOENT (No such file or |
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directory) stat64("/sys/devices/system/cpu/cpu0/cpufreq", |
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{st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 open("/etc/cpufreqd.conf", |
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O_RDONLY) = 3 fstat64(3, {st_mode=S_IFREG|0644, st_size=1687, ...}) = |
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0 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, |
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0) = 0x40014000 read(3, "# cpufreqd.conf\n\n[General]\npidfi"..., 4096) |
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= 1687 time([1090190008]) = 1090190008 |
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open("/etc/localtime", O_RDONLY) = 4 |
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fstat64(4, {st_mode=S_IFREG|0644, st_size=1323, ...}) = 0 |
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mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, |
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0) = 0x40015000 read(4, |
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"TZif\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\7\0\0\0\7\0"..., 4096) = |
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1323 close(4) = 0 |
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munmap(0x40015000, 4096) = 0 |
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rt_sigaction(SIGPIPE, {0x400ceef2, [], 0}, {SIG_DFL}, 8) = 0 |
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socket(PF_UNIX, SOCK_DGRAM, 0) = 4 |
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fcntl64(4, F_SETFD, FD_CLOEXEC) = 0 |
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connect(4, {sa_family=AF_UNIX, path="/dev/log"}, 16) = -1 EPROTOTYPE |
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(Protocol wrong type for socket) close(4) |
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= 0 socket(PF_UNIX, SOCK_STREAM, 0) = 4 |
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fcntl64(4, F_SETFD, FD_CLOEXEC) = 0 |
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connect(4, {sa_family=AF_UNIX, path="/dev/log"}, 16) = 0 |
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send(4, "<28>Jul 18 23:33:28 cpufreqd: pa"..., 80, 0) = 80 |
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rt_sigaction(SIGPIPE, {SIG_DFL}, NULL, 8) = 0 |
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read(3, "", 4096) = 0 |
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close(3) = 0 |
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munmap(0x40014000, 4096) = 0 |
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time([1090190008]) = 1090190008 |
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rt_sigaction(SIGPIPE, {0x400ceef2, [], 0}, {SIG_DFL}, 8) = 0 |
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send(4, "<29>Jul 18 23:33:28 cpufreqd: pa"..., 91, 0) = 91 |
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rt_sigaction(SIGPIPE, {SIG_DFL}, NULL, 8) = 0 |
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time([1090190008]) = 1090190008 |
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rt_sigaction(SIGPIPE, {0x400ceef2, [], 0}, {SIG_DFL}, 8) = 0 |
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send(4, "<29>Jul 18 23:33:28 cpufreqd: pa"..., 87, 0) = 87 |
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rt_sigaction(SIGPIPE, {SIG_DFL}, NULL, 8) = 0 |
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time([1090190008]) = 1090190008 |
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rt_sigaction(SIGPIPE, {0x400ceef2, [], 0}, {SIG_DFL}, 8) = 0 |
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send(4, "<29>Jul 18 23:33:28 cpufreqd: pa"..., 84, 0) = 84 |
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rt_sigaction(SIGPIPE, {SIG_DFL}, NULL, 8) = 0 |
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time([1090190008]) = 1090190008 |
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rt_sigaction(SIGPIPE, {0x400ceef2, [], 0}, {SIG_DFL}, 8) = 0 |
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send(4, "<29>Jul 18 23:33:28 cpufreqd: pa"..., 89, 0) = 89 |
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rt_sigaction(SIGPIPE, {SIG_DFL}, NULL, 8) = 0 |
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time([1090190008]) = 1090190008 |
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rt_sigaction(SIGPIPE, {0x400ceef2, [], 0}, {SIG_DFL}, 8) = 0 |
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send(4, "<29>Jul 18 23:33:28 cpufreqd: pa"..., 89, 0) = 89 |
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rt_sigaction(SIGPIPE, {SIG_DFL}, NULL, 8) = 0 |
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geteuid32() = 0 |
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time([1090190008]) = 1090190008 |
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rt_sigaction(SIGPIPE, {0x400ceef2, [], 0}, {SIG_DFL}, 8) = 0 |
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send(4, "<29>Jul 18 23:33:28 cpufreqd: St"..., 52, 0) = 52 |
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rt_sigaction(SIGPIPE, {SIG_DFL}, NULL, 8) = 0 |
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rt_sigaction(SIGTERM, {0x800032fa, [HUP INT TERM], 0}, NULL, 8) = 0 |
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rt_sigaction(SIGINT, {0x8000327c, [HUP INT TERM], 0}, NULL, 8) = 0 |
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rt_sigaction(SIGHUP, {0x800031fe, [HUP INT TERM], 0}, NULL, 8) = 0 |
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open("/usr/lib/libsys_acpi.so", O_RDONLY) = 3 |
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read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\200\f\0"..., |
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512) = 512 fstat64(3, {st_mode=S_IFREG|0755, st_size=10168, ...}) = 0 |
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mmap2(NULL, 9000, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x40014000 |
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mmap2(0x40016000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, |
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0x2) = 0x40016000 close(3) = 0 |
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--- SIGSEGV (Segmentation fault) @ 0 (0) --- |
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+++ killed by SIGSEGV +++ |
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(gdb) run cpufreqd |
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Starting program: /usr/sbin/cpufreqd cpufreqd |
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|
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Program received signal SIGSEGV, Segmentation fault. |
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0x40016e0e in ?? () |
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(gdb) bt |
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#0 0x40016e0e in ?? () |
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#1 0x40020108 in ?? () |
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#2 0x40014580 in ?? () |
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#3 0x40014820 in ?? () |
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#4 0xbffff818 in ?? () |
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#5 0x4001f16b in ?? () |
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#6 0x40014598 in ?? () |
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#7 0x80007338 in ?? () |
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#8 0x8000389c in ?? () |
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#9 0xb03d3201 in ?? () |
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#10 0x80001cde in ?? () |
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(gdb) info registers |
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eax 0x8000389c -2147469156 |
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ecx 0x0 0 |
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edx 0x8000389c -2147469156 |
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ebx 0x400180f4 1073840372 |
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esp 0xbffff7e0 0xbffff7e0 |
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ebp 0xbffff818 0xbffff818 |
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esi 0x800072ac -2147454292 |
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edi 0x40014820 1073825824 |
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eip 0x40016e0e 0x40016e0e |
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eflags 0x10212 66066 |
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cs 0x73 115 |
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ss 0x7b 123 |
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ds 0x7b 123 |
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es 0x7b 123 |
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fs 0x0 0 |
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gs 0x0 0 |
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(gdb) x/8i $pc |
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0x40016e0e: mov %eax,(%edx) |
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0x40016e10: mov 0x54(%ebx),%edx |
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0x40016e16: mov 0xffffffe0(%ebp),%eax |
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0x40016e19: mov %eax,(%edx) |
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0x40016e1b: mov 0x64(%ebx),%edx |
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0x40016e21: lea 0xfffffb8c(%ebx),%eax |
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0x40016e27: mov %eax,0x4(%esp,1) |
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0x40016e2b: movl $0x6,(%esp,1) |
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(gdb) x/16x $sp |
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0xbffff7e0: 0x40020108 0x40014580 0x40014820 |
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0xbffff818 0xbffff7f0: 0x4001f16b 0x40014598 0x80007338 |
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0x8000389c 0xbffff800: 0xb03d3201 0x80001cde 0x00000000 |
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0x8000716c 0xbffff810: 0x800072ac 0x8000716c |
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0xbffffa78 0x80001d44 |
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-- |
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