[sudo-workers] sudo and stalled connections
Dâniel Fraga
fragabr at gmail.com
Sun Sep 14 14:50:22 EDT 2008
On Sun, 14 Sep 2008 11:36:11 -0500
Eric Haszlakiewicz <erh at nimenees.com> wrote:
> Run it through strace and see where it stops. That might give you some
> clues.
Hi, here it is:
execve("/usr/local/bin/sudo", ["sudo", "nmap", "-sS", "tux"], [/* 69 vars */]) = 0
brk(0) = 0x1fba000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f066235b000
access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=143930, ...}) = 0
mmap(NULL, 143930, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f0662337000
close(3) = 0
open("/lib64/libpam.so.0", O_RDONLY) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0p!\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=54297, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0662336000
mmap(NULL, 2139768, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f0661f37000
mprotect(0x7f0661f42000, 2093056, PROT_NONE) = 0
mmap(0x7f0662141000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xa000) = 0x7f0662141000
close(3) = 0
open("/lib64/libdl.so.2", O_RDONLY) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0 \16\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=20895, ...}) = 0
mmap(NULL, 2109728, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f0661d33000
mprotect(0x7f0661d35000, 2097152, PROT_NONE) = 0
mmap(0x7f0661f35000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7f0661f35000
close(3) = 0
open("/lib64/libc.so.6", O_RDONLY) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0`\342\1\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=1610001, ...}) = 0
mmap(NULL, 3420568, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f06619ef000
mprotect(0x7f0661b29000, 2097152, PROT_NONE) = 0
mmap(0x7f0661d29000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x13a000) = 0x7f0661d29000
mmap(0x7f0661d2e000, 16792, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f0661d2e000
close(3) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0662335000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0662334000
arch_prctl(ARCH_SET_FS, 0x7f06623346f0) = 0
mprotect(0x7f0661d29000, 16384, PROT_READ) = 0
mprotect(0x7f0661f35000, 4096, PROT_READ) = 0
mprotect(0x7f066235c000, 4096, PROT_READ) = 0
munmap(0x7f0662337000, 143930) = 0
geteuid() = 0
rt_sigaction(SIGINT, {SIG_IGN}, {SIG_DFL}, 8) = 0
rt_sigaction(SIGQUIT, {SIG_IGN}, {SIG_DFL}, 8) = 0
rt_sigaction(SIGTSTP, {SIG_IGN}, {SIG_DFL}, 8) = 0
rt_sigaction(SIGCHLD, {0x40ce90, [], SA_RESTORER|SA_RESTART, 0x7f0661a1fe50}, {SIG_DFL}, 8) = 0
setrlimit(RLIMIT_NPROC, {rlim_cur=RLIM_INFINITY, rlim_max=RLIM_INFINITY}) = 0
getrlimit(RLIMIT_CORE, {rlim_cur=0, rlim_max=0}) = 0
setrlimit(RLIMIT_CORE, {rlim_cur=0, rlim_max=0}) = 0
fcntl(0, F_GETFL) = 0x8002 (flags O_RDWR|O_LARGEFILE)
fcntl(1, F_GETFL) = 0x8002 (flags O_RDWR|O_LARGEFILE)
fcntl(2, F_GETFL) = 0x8002 (flags O_RDWR|O_LARGEFILE)
brk(0) = 0x1fba000
brk(0x1fdb000) = 0x1fdb000
open("/etc/nsswitch.conf", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=1744, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f066235a000
read(3, "#\n# /etc/nsswitch.conf\n#\n# An ex"..., 4096) = 1744
read(3, "", 4096) = 0
close(3) = 0
munmap(0x7f066235a000, 4096) = 0
open("/etc/ld.so.cache", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=143930, ...}) = 0
mmap(NULL, 143930, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f0662337000
close(3) = 0
open("/lib64/libnss_files.so.2", O_RDONLY) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\360\37\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=54887, ...}) = 0
mmap(NULL, 2139432, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f06617e4000
mprotect(0x7f06617ee000, 2093056, PROT_NONE) = 0
mmap(0x7f06619ed000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x9000) = 0x7f06619ed000
close(3) = 0
mprotect(0x7f06619ed000, 4096, PROT_READ) = 0
munmap(0x7f0662337000, 143930) = 0
open("/etc/passwd", O_RDONLY|0x80000 /* O_??? */) = 3
fcntl(3, F_GETFD) = 0x1 (flags FD_CLOEXEC)
fstat(3, {st_mode=S_IFREG|0644, st_size=909, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f066235a000
lseek(3, 0, SEEK_CUR) = 0
open("/etc/group", O_RDONLY|0x80000 /* O_??? */) = 4
fstat(4, {st_mode=S_IFREG|0664, st_size=397, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0662359000
lseek(4, 0, SEEK_CUR) = 0
socket(PF_NETLINK, SOCK_RAW, 0) = 5
bind(5, {sa_family=AF_NETLINK, pid=0, groups=00000000}, 12) = 0
getsockname(5, {sa_family=AF_NETLINK, pid=6806, groups=00000000}, [7025265774000341004]) = 0
sendto(5, "\24\0\0\0\22\0\1\3y[\315H\0\0\0\0\0\0\0\0", 20, 0, {sa_family=AF_NETLINK, pid=0, groups=00000000}, 12) = 20
recvmsg(5, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(1)=[{"\360\0\0\0\20\0\2\0y[\315H\226\32\0\0\0\0\4\3\1\0\0\0I"..., 4096}], msg_controllen=0, msg_flags=0}, 0) = 928
recvmsg(5, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(1)=[{"\24\0\0\0\3\0\2\0y[\315H\226\32\0\0\0\0\0\0\1\0\0\0I\0"..., 4096}], msg_controllen=0, msg_flags=0}, 0) = 20
sendto(5, "\24\0\0\0\26\0\1\3z[\315H\0\0\0\0\0\0\0\0", 20, 0, {sa_family=AF_NETLINK, pid=0, groups=00000000}, 12) = 20
recvmsg(5, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(1)=[{"0\0\0\0\24\0\2\0z[\315H\226\32\0\0\2\10\200\376\1\0\0\0"..., 4096}], msg_controllen=0, msg_flags=0}, 0) = 212
recvmsg(5, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000}, msg_iov(1)=[{"\24\0\0\0\3\0\2\0z[\315H\226\32\0\0\0\0\0\0\1\0\0\0\10"..., 4096}], msg_controllen=0, msg_flags=0}, 0) = 20
close(5) = 0
open("/etc/localtime", O_RDONLY) = 5
fstat(5, {st_mode=S_IFREG|0644, st_size=175, ...}) = 0
fstat(5, {st_mode=S_IFREG|0644, st_size=175, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f0662358000
read(5, "TZif2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\2\0\0\0\2\0\0"..., 4096) = 175
lseek(5, -95, SEEK_CUR) = 80
read(5, "TZif2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\2\0\0\0\2\0\0"..., 4096) = 95
close(5) = 0
munmap(0x7f0662358000, 4096) = 0
uname({sys="Linux", node="tux.abusar.org.br", ...}) = 0
ioctl(0, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo ...}) = 0
readlink("/proc/self/fd/0", "/dev/pts/3", 4095) = 10
getuid() = 0
socket(PF_FILE, SOCK_STREAM, 0) = 5
fcntl(5, F_SETFL, O_RDWR|O_NONBLOCK) = 0
connect(5, {sa_family=AF_FILE, path="/var/run/nscd/socket"}, 110) = -1 ENOENT (No such file or directory)
close(5) = 0
socket(PF_FILE, SOCK_STREAM, 0) = 5
fcntl(5, F_SETFL, O_RDWR|O_NONBLOCK) = 0
connect(5, {sa_family=AF_FILE, path="/var/run/nscd/socket"}, 110) = -1 ENOENT (No such file or directory)
close(5) = 0
lseek(3, 0, SEEK_SET) = 0
read(3, "root:x:0:0:root:/root:/bin/bash\n"..., 4096) = 909
close(3) = 0
munmap(0x7f066235a000, 4096) = 0
getgroups(0, NULL) = 8
getgroups(8, [0, 1, 2, 3, 4, 6, 10, 11]) = 8
setresgid(4294967295, 0, 4294967295) = 0
setresuid(0, 0, 0) = 0
getcwd("/home/fraga/src", 4096) = 16
setresuid(0, 0, 0) = 0
setresgid(4294967295, 0, 4294967295) = 0
lstat("/etc/sudoers", {st_mode=S_IFREG|0440, st_size=440, ...}) = 0
setresgid(4294967295, 0, 4294967295) = 0
setresuid(0, 1, 0) = 0
open("/etc/sudoers", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0440, st_size=440, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f066235a000
read(3, "# sudoers file.\n#\n# This file MU"..., 4096) = 440
lseek(3, 0, SEEK_SET) = 0
fcntl(3, F_SETFD, FD_CLOEXEC) = 0
setresuid(0, 0, 0) = 0
setresgid(4294967295, 0, 4294967295) = 0
ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, 0x7fff6a359fc0) = -1 ENOTTY (Inappropriate ioctl for device)
read(3, "# sudoers file.\n#\n# This file MU"..., 8192) = 440
read(3, "", 4096) = 0
read(3, "", 8192) = 0
ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, 0x7fff6a359fd0) = -1 ENOTTY (Inappropriate ioctl for device)
open("/proc/sys/kernel/ngroups_max", O_RDONLY) = 5
read(5, "65536\n", 31) = 6
close(5) = 0
socket(PF_FILE, SOCK_STREAM, 0) = 5
fcntl(5, F_SETFL, O_RDWR|O_NONBLOCK) = 0
connect(5, {sa_family=AF_FILE, path="/var/run/nscd/socket"}, 110) = -1 ENOENT (No such file or directory)
close(5) = 0
socket(PF_FILE, SOCK_STREAM, 0) = 5
fcntl(5, F_SETFL, O_RDWR|O_NONBLOCK) = 0
connect(5, {sa_family=AF_FILE, path="/var/run/nscd/socket"}, 110) = -1 ENOENT (No such file or directory)
close(5) = 0
lseek(4, 0, SEEK_SET) = 0
read(4, "root:x:0:root\nbin:x:1:root,bin,d"..., 4096) = 397
read(4, "", 4096) = 0
close(4) = 0
munmap(0x7f0662359000, 4096) = 0
open("/etc/ld.so.cache", O_RDONLY) = 4
fstat(4, {st_mode=S_IFREG|0644, st_size=143930, ...}) = 0
mmap(NULL, 143930, PROT_READ, MAP_PRIVATE, 4, 0) = 0x7f0662310000
close(4) = 0
open("/lib64/libnss_nisplus.so.2", O_RDONLY) = 4
read(4, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\220 \0\0"..., 832) = 832
fstat(4, {st_mode=S_IFREG|0755, st_size=63319, ...}) = 0
mmap(NULL, 2147624, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 4, 0) = 0x7f06615d7000
mprotect(0x7f06615e2000, 2097152, PROT_NONE) = 0
mmap(0x7f06617e2000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 4, 0xb000) = 0x7f06617e2000
close(4) = 0
open("/lib64/libnsl.so.1", O_RDONLY) = 4
read(4, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\240@\0\0"..., 832) = 832
fstat(4, {st_mode=S_IFREG|0755, st_size=107462, ...}) = 0
mmap(NULL, 2190032, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 4, 0) = 0x7f06613c0000
mprotect(0x7f06613d4000, 2093056, PROT_NONE) = 0
mmap(0x7f06615d3000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 4, 0x13000) = 0x7f06615d3000
mmap(0x7f06615d5000, 6864, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f06615d5000
close(4) = 0
mprotect(0x7f06615d3000, 4096, PROT_READ) = 0
close(4) = 0
open("/lib64/libnss_nisplus.so.2", O_RDONLY) = 4
read(4, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\220 \0\0"..., 832) = 832
fstat(4, {st_mode=S_IFREG|0755, st_size=63319, ...}) = 0
mmap(NULL, 2147624, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 4, 0) = 0x7f06615d7000
mprotect(0x7f06615e2000, 2097152, PROT_NONE) = 0
mmap(0x7f06617e2000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 4, 0xb000) = 0x7f06617e2000
close(4) = 0
open("/lib64/libnsl.so.1", O_RDONLY) = 4
read(4, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\240@\0\0"..., 832) = 832
fstat(4, {st_mode=S_IFREG|0755, st_size=107462, ...}) = 0
mmap(NULL, 2190032, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 4, 0) = 0x7f06613c0000
mprotect(0x7f06613d4000, 2093056, PROT_NONE) = 0
mmap(0x7f06615d3000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 4, 0x13000) = 0x7f06615d3000
mmap(0x7f06615d5000, 6864, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f06615d5000
close(4) = 0
mprotect(0x7f06615d3000, 4096, PROT_READ) = 0
mprotect(0x7f06617e2000, 4096, PROT_READ) = 0
munmap(0x7f0662310000, 143930) = 0
uname({sys="Linux", node="tux.abusar.org.br", ...}) = 0
stat("/var/nis/NIS_COLD_START", 0x7fff6a359d10) = -1 ENOENT (No such file or directory)
open("/var/nis/NIS_COLD_START", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY) = 4
fstat(4, {st_mode=S_IFREG|0644, st_size=143930, ...}) = 0
mmap(NULL, 143930, PROT_READ, MAP_PRIVATE, 4, 0) = 0x7f0662310000
close(4) = 0
open("/lib64/libnss_nis.so.2", O_RDONLY) = 4
read(4, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0p \0\0\0"..., 832) = 832
fstat(4, {st_mode=S_IFREG|0755, st_size=54352, ...}) = 0
mmap(NULL, 2139352, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 4, 0) = 0x7f06611b5000
mprotect(0x7f06611be000, 2097152, PROT_NONE) = 0
mmap(0x7f06613be000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 4, 0x9000) = 0x7f06613be000
close(4) = 0
mprotect(0x7f06613be000, 4096, PROT_READ) = 0
munmap(0x7f0662310000, 143930) = 0
uname({sys="Linux", node="tux.abusar.org.br", ...}) = 0
setgroups(8, [0, 1, 2, 3, 4, 6, 10, 11]) = 0
getgroups(0, NULL) = 8
getgroups(8, [0, 1, 2, 3, 4, 6, 10, 11]) = 8
setresgid(4294967295, 0, 4294967295) = 0
setresuid(4294967295, 0, 4294967295) = 0
stat("/usr/local/bin/nmap", {st_mode=S_IFREG|0755, st_size=593480, ...}) = 0
setresuid(0, 0, 0) = 0
setresgid(4294967295, 0, 4294967295) = 0
setgroups(8, [0, 1, 2, 3, 4, 6, 10, 11]) = 0
setgroups(8, [0, 1, 2, 3, 4, 6, 10, 11]) = 0
setresgid(4294967295, 0, 4294967295) = 0
setresuid(4294967295, 0, 4294967295) = 0
setresuid(0, 0, 0) = 0
setresgid(4294967295, 0, 4294967295) = 0
setgroups(8, [0, 1, 2, 3, 4, 6, 10, 11]) = 0
stat("/etc/localtime", {st_mode=S_IFREG|0644, st_size=175, ...}) = 0
socket(PF_FILE, SOCK_DGRAM, 0) = 4
fcntl(4, F_SETFD, FD_CLOEXEC) = 0
connect(4, {sa_family=AF_FILE, path="/dev/log"}, 110) = 0
sendto(4, "<149>Sep 14 15:44:09 sudo: r"..., 119, MSG_NOSIGNAL, NULL, 0) = ? ERESTARTSYS (To be restarted)
--- SIGINT (Interrupt) @ 0 (0) ---
sendto(4, "<149>Sep 14 15:44:09 sudo: r"..., 119, MSG_NOSIGNAL,
NULL, 0
***
Any hints? Thanks.
--
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