On 2012-10-19 16:39:10 -0700, Mark Nudelman wrote: > Hi Aníbal, > Thank you for bringing this bug to my attention. Unfortunately I have > not been able to reproduce it on a Fedora system:
Note: I've just noticed that the file to view must not be empty to reproduce the bug. > Linux legolas-fedora 2.6.35.13-92.fc14.i686 #1 SMP Sat May 21 17:39:42 > UTC 2011 i686 i686 i386 GNU/Linux > > I've tried a number of scenarios with different LESSOPEN variants but > have never produced a zombie process. Here's a script I've used to reproduce the bug here (there's also a strace call to get strace output). It removes some environment variables, in case they may have an influence. #!/bin/sh # Testcase for Debian bug 615031 # http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=615031 prefix=less-test # $SHELL may have an influence. unset SHELL for i in `env | sed -n 's/^\(LESS[^=]*\).*/\1/p'`; do unset "$i"; done cat > $prefix-open.sh <<EOF #!/bin/sh cat "\$@" EOF chmod 755 $prefix-open.sh echo blah > $prefix-file export LESSOPEN="|`pwd`/$prefix-open.sh %s" strace -f -t -o $prefix-strace less $prefix-file rm $prefix-file $prefix-open.sh And here's the strace output: 2253 12:55:07 execve("/usr/bin/less", ["less", "less-test-file"], [/* 100 vars */]) = 0 2253 12:55:07 brk(0) = 0x1722000 2253 12:55:07 access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory) 2253 12:55:07 mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f826b3b8000 2253 12:55:07 access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory) 2253 12:55:07 open("/lib64/tls/x86_64/libtinfo.so.5", O_RDONLY) = -1 ENOENT (No such file or directory) 2253 12:55:07 stat("/lib64/tls/x86_64", 0x7fff9d73ac50) = -1 ENOENT (No such file or directory) 2253 12:55:07 open("/lib64/tls/libtinfo.so.5", O_RDONLY) = -1 ENOENT (No such file or directory) 2253 12:55:07 stat("/lib64/tls", 0x7fff9d73ac50) = -1 ENOENT (No such file or directory) 2253 12:55:07 open("/lib64/x86_64/libtinfo.so.5", O_RDONLY) = -1 ENOENT (No such file or directory) 2253 12:55:07 stat("/lib64/x86_64", 0x7fff9d73ac50) = -1 ENOENT (No such file or directory) 2253 12:55:07 open("/lib64/libtinfo.so.5", O_RDONLY) = -1 ENOENT (No such file or directory) 2253 12:55:07 stat("/lib64", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 2253 12:55:07 open("/home/vinc17/./lib/tls/x86_64/libtinfo.so.5", O_RDONLY) = -1 ENOENT (No such file or directory) 2253 12:55:07 stat("/home/vinc17/./lib/tls/x86_64", 0x7fff9d73ac50) = -1 ENOENT (No such file or directory) 2253 12:55:07 open("/home/vinc17/./lib/tls/libtinfo.so.5", O_RDONLY) = -1 ENOENT (No such file or directory) 2253 12:55:07 stat("/home/vinc17/./lib/tls", 0x7fff9d73ac50) = -1 ENOENT (No such file or directory) 2253 12:55:07 open("/home/vinc17/./lib/x86_64/libtinfo.so.5", O_RDONLY) = -1 ENOENT (No such file or directory) 2253 12:55:07 stat("/home/vinc17/./lib/x86_64", 0x7fff9d73ac50) = -1 ENOENT (No such file or directory) 2253 12:55:07 open("/home/vinc17/./lib/libtinfo.so.5", O_RDONLY) = -1 ENOENT (No such file or directory) 2253 12:55:07 stat("/home/vinc17/./lib", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 2253 12:55:07 open("/etc/ld.so.cache", O_RDONLY) = 3 2253 12:55:07 fstat(3, {st_mode=S_IFREG|0644, st_size=148038, ...}) = 0 2253 12:55:07 mmap(NULL, 148038, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f826b393000 2253 12:55:07 close(3) = 0 2253 12:55:07 access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory) 2253 12:55:07 open("/lib/x86_64-linux-gnu/libtinfo.so.5", O_RDONLY) = 3 2253 12:55:07 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\300\323\0\0\0\0\0\0"..., 832) = 832 2253 12:55:07 fstat(3, {st_mode=S_IFREG|0644, st_size=167952, ...}) = 0 2253 12:55:07 mmap(NULL, 2264608, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f826af72000 2253 12:55:07 mprotect(0x7f826af97000, 2093056, PROT_NONE) = 0 2253 12:55:07 mmap(0x7f826b196000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x24000) = 0x7f826b196000 2253 12:55:07 close(3) = 0 2253 12:55:07 open("/lib64/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) 2253 12:55:07 open("/home/vinc17/./lib/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) 2253 12:55:07 access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory) 2253 12:55:07 open("/lib/x86_64-linux-gnu/libc.so.6", O_RDONLY) = 3 2253 12:55:07 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\300\357\1\0\0\0\0\0"..., 832) = 832 2253 12:55:07 fstat(3, {st_mode=S_IFREG|0755, st_size=1595408, ...}) = 0 2253 12:55:07 mmap(NULL, 3709016, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f826abe8000 2253 12:55:07 mprotect(0x7f826ad68000, 2097152, PROT_NONE) = 0 2253 12:55:07 mmap(0x7f826af68000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x180000) = 0x7f826af68000 2253 12:55:07 mmap(0x7f826af6d000, 18520, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f826af6d000 2253 12:55:07 close(3) = 0 2253 12:55:07 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f826b392000 2253 12:55:07 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f826b391000 2253 12:55:07 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f826b390000 2253 12:55:07 arch_prctl(ARCH_SET_FS, 0x7f826b391700) = 0 2253 12:55:07 mprotect(0x7f826af68000, 16384, PROT_READ) = 0 2253 12:55:07 mprotect(0x7f826b196000, 16384, PROT_READ) = 0 2253 12:55:07 mprotect(0x620000, 4096, PROT_READ) = 0 2253 12:55:07 mprotect(0x7f826b3ba000, 4096, PROT_READ) = 0 2253 12:55:07 munmap(0x7f826b393000, 148038) = 0 2253 12:55:07 ioctl(1, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo ...}) = 0 2253 12:55:07 ioctl(1, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo ...}) = 0 2253 12:55:07 brk(0) = 0x1722000 2253 12:55:07 brk(0x1743000) = 0x1743000 2253 12:55:07 stat("/home/vinc17/.terminfo", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 2253 12:55:07 access("/home/vinc17/.terminfo/x/xterm-debian", R_OK) = 0 2253 12:55:07 open("/home/vinc17/.terminfo/x/xterm-debian", O_RDONLY) = 3 2253 12:55:07 fstat(3, {st_mode=S_IFREG|0644, st_size=2075, ...}) = 0 2253 12:55:07 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f826b3b7000 2253 12:55:07 read(3, "\32\0017\0\35\0\17\0i\1\313\4xterm-debian|Debian "..., 4096) = 2075 2253 12:55:07 read(3, "", 4096) = 0 2253 12:55:07 close(3) = 0 2253 12:55:07 munmap(0x7f826b3b7000, 4096) = 0 2253 12:55:07 ioctl(1, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo ...}) = 0 2253 12:55:07 ioctl(1, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo ...}) = 0 2253 12:55:07 ioctl(1, TIOCGWINSZ, {ws_row=60, ws_col=80, ws_xpixel=493, ws_ypixel=784}) = 0 2253 12:55:07 ioctl(2, TIOCGWINSZ, {ws_row=60, ws_col=80, ws_xpixel=493, ws_ypixel=784}) = 0 2253 12:55:07 open("/usr/bin/.sysless", O_RDONLY) = -1 ENOENT (No such file or directory) 2253 12:55:07 open("/etc/sysless", O_RDONLY) = -1 ENOENT (No such file or directory) 2253 12:55:07 open("/home/vinc17/.less", O_RDONLY) = -1 ENOENT (No such file or directory) 2253 12:55:07 open("/usr/lib/locale/locale-archive", O_RDONLY) = 3 2253 12:55:07 fstat(3, {st_mode=S_IFREG|0644, st_size=110939968, ...}) = 0 2253 12:55:07 mmap(NULL, 110939968, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f826421b000 2253 12:55:07 close(3) = 0 2253 12:55:07 open("/home/vinc17/.lesshst", O_RDONLY) = 3 2253 12:55:07 fstat(3, {st_mode=S_IFREG|0600, st_size=947, ...}) = 0 2253 12:55:07 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f826b3b7000 2253 12:55:07 read(3, ".less-history-file:\n.search\n\"app"..., 4096) = 947 2253 12:55:07 read(3, "", 4096) = 0 2253 12:55:07 close(3) = 0 2253 12:55:07 munmap(0x7f826b3b7000, 4096) = 0 2253 12:55:07 open("/dev/tty", O_RDONLY) = 3 2253 12:55:07 ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo ...}) = 0 2253 12:55:07 fsync(3) = -1 EINVAL (Invalid argument) 2253 12:55:07 ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo ...}) = 0 2253 12:55:07 ioctl(3, SNDCTL_TMR_STOP or TCSETSW, {B38400 opost isig -icanon -echo ...}) = 0 2253 12:55:07 ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig -icanon -echo ...}) = 0 2253 12:55:07 rt_sigaction(SIGINT, {0x414bc0, [INT], SA_RESTORER|SA_RESTART, 0x7f826ac1a4f0}, {SIG_DFL, [], 0}, 8) = 0 2253 12:55:07 rt_sigaction(SIGTSTP, {0x414b40, [TSTP], SA_RESTORER|SA_RESTART, 0x7f826ac1a4f0}, {SIG_DFL, [], 0}, 8) = 0 2253 12:55:07 rt_sigaction(SIGWINCH, {0x414b80, [WINCH], SA_RESTORER|SA_RESTART, 0x7f826ac1a4f0}, {SIG_DFL, [], 0}, 8) = 0 2253 12:55:07 rt_sigaction(SIGQUIT, {SIG_IGN, [QUIT], SA_RESTORER|SA_RESTART, 0x7f826ac1a4f0}, {SIG_DFL, [], 0}, 8) = 0 2253 12:55:07 pipe2([4, 5], O_CLOEXEC) = 0 2253 12:55:07 clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f826b3919d0) = 2254 2254 12:55:07 close(4 <unfinished ...> 2253 12:55:07 close(5 <unfinished ...> 2254 12:55:07 <... close resumed> ) = 0 2253 12:55:07 <... close resumed> ) = 0 2254 12:55:07 dup2(5, 1 <unfinished ...> 2253 12:55:07 fcntl(4, F_SETFD, 0 <unfinished ...> 2254 12:55:07 <... dup2 resumed> ) = 1 2253 12:55:07 <... fcntl resumed> ) = 0 2254 12:55:07 close(5 <unfinished ...> 2253 12:55:07 read(4, <unfinished ...> 2254 12:55:07 <... close resumed> ) = 0 2254 12:55:07 execve("/bin/sh", ["sh", "-c", "/home/vinc17/wd/bugs/less-test-o"...], [/* 100 vars */]) = 0 2254 12:55:07 brk(0) = 0x2457000 2254 12:55:07 access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory) 2254 12:55:07 mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b8d5fc000 2254 12:55:07 access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory) 2254 12:55:07 open("/lib64/tls/x86_64/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) 2254 12:55:07 stat("/lib64/tls/x86_64", 0x7fff18736830) = -1 ENOENT (No such file or directory) 2254 12:55:07 open("/lib64/tls/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) 2254 12:55:07 stat("/lib64/tls", 0x7fff18736830) = -1 ENOENT (No such file or directory) 2254 12:55:07 open("/lib64/x86_64/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) 2254 12:55:07 stat("/lib64/x86_64", 0x7fff18736830) = -1 ENOENT (No such file or directory) 2254 12:55:07 open("/lib64/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) 2254 12:55:07 stat("/lib64", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 2254 12:55:07 open("/home/vinc17/./lib/tls/x86_64/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) 2254 12:55:07 stat("/home/vinc17/./lib/tls/x86_64", 0x7fff18736830) = -1 ENOENT (No such file or directory) 2254 12:55:07 open("/home/vinc17/./lib/tls/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) 2254 12:55:07 stat("/home/vinc17/./lib/tls", 0x7fff18736830) = -1 ENOENT (No such file or directory) 2254 12:55:07 open("/home/vinc17/./lib/x86_64/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) 2254 12:55:07 stat("/home/vinc17/./lib/x86_64", 0x7fff18736830) = -1 ENOENT (No such file or directory) 2254 12:55:07 open("/home/vinc17/./lib/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) 2254 12:55:07 stat("/home/vinc17/./lib", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 2254 12:55:07 open("/etc/ld.so.cache", O_RDONLY) = 4 2254 12:55:07 fstat(4, {st_mode=S_IFREG|0644, st_size=148038, ...}) = 0 2254 12:55:07 mmap(NULL, 148038, PROT_READ, MAP_PRIVATE, 4, 0) = 0x7f9b8d5d7000 2254 12:55:07 close(4) = 0 2254 12:55:07 access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory) 2254 12:55:07 open("/lib/x86_64-linux-gnu/libc.so.6", O_RDONLY) = 4 2254 12:55:07 read(4, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\300\357\1\0\0\0\0\0"..., 832) = 832 2254 12:55:07 fstat(4, {st_mode=S_IFREG|0755, st_size=1595408, ...}) = 0 2254 12:55:07 mmap(NULL, 3709016, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 4, 0) = 0x7f9b8d055000 2254 12:55:07 mprotect(0x7f9b8d1d5000, 2097152, PROT_NONE) = 0 2254 12:55:07 mmap(0x7f9b8d3d5000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 4, 0x180000) = 0x7f9b8d3d5000 2254 12:55:07 mmap(0x7f9b8d3da000, 18520, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f9b8d3da000 2254 12:55:07 close(4) = 0 2254 12:55:07 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b8d5d6000 2254 12:55:07 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b8d5d5000 2254 12:55:07 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9b8d5d4000 2254 12:55:07 arch_prctl(ARCH_SET_FS, 0x7f9b8d5d5700) = 0 2254 12:55:07 mprotect(0x7f9b8d3d5000, 16384, PROT_READ) = 0 2254 12:55:07 mprotect(0x7f9b8d5fe000, 4096, PROT_READ) = 0 2254 12:55:07 munmap(0x7f9b8d5d7000, 148038) = 0 2254 12:55:07 getpid() = 2254 2254 12:55:07 rt_sigaction(SIGCHLD, {0x40f270, ~[RTMIN RT_1], SA_RESTORER, 0x7f9b8d0874f0}, NULL, 8) = 0 2254 12:55:07 geteuid() = 1000 2254 12:55:07 brk(0) = 0x2457000 2254 12:55:07 brk(0x2478000) = 0x2478000 2254 12:55:07 getppid() = 2253 2254 12:55:07 stat("/home/vinc17/wd/bugs", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 2254 12:55:07 stat(".", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 2254 12:55:07 rt_sigaction(SIGINT, NULL, {SIG_DFL, [], 0}, 8) = 0 2254 12:55:07 rt_sigaction(SIGINT, {0x40f270, ~[RTMIN RT_1], SA_RESTORER, 0x7f9b8d0874f0}, NULL, 8) = 0 2254 12:55:07 rt_sigaction(SIGQUIT, NULL, {SIG_IGN, [], 0}, 8) = 0 2254 12:55:07 rt_sigaction(SIGTERM, NULL, {SIG_DFL, [], 0}, 8) = 0 2254 12:55:07 rt_sigaction(SIGTERM, {SIG_DFL, ~[RTMIN RT_1], SA_RESTORER, 0x7f9b8d0874f0}, NULL, 8) = 0 2254 12:55:07 clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f9b8d5d59d0) = 2255 2255 12:55:07 execve("/home/vinc17/wd/bugs/less-test-open.sh", ["/home/vinc17/wd/bugs/less-test-o"..., "less-test-file"], [/* 100 vars */] <unfinished ...> 2254 12:55:07 wait4(-1, <unfinished ...> 2255 12:55:07 <... execve resumed> ) = 0 2255 12:55:07 brk(0) = 0x149d000 2255 12:55:07 access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory) 2255 12:55:07 mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f11651af000 2255 12:55:07 access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory) 2255 12:55:07 open("/lib64/tls/x86_64/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) 2255 12:55:07 stat("/lib64/tls/x86_64", 0x7fff8b6d2b00) = -1 ENOENT (No such file or directory) 2255 12:55:07 open("/lib64/tls/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) 2255 12:55:07 stat("/lib64/tls", 0x7fff8b6d2b00) = -1 ENOENT (No such file or directory) 2255 12:55:07 open("/lib64/x86_64/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) 2255 12:55:07 stat("/lib64/x86_64", 0x7fff8b6d2b00) = -1 ENOENT (No such file or directory) 2255 12:55:07 open("/lib64/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) 2255 12:55:07 stat("/lib64", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 2255 12:55:07 open("/home/vinc17/./lib/tls/x86_64/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) 2255 12:55:07 stat("/home/vinc17/./lib/tls/x86_64", 0x7fff8b6d2b00) = -1 ENOENT (No such file or directory) 2255 12:55:07 open("/home/vinc17/./lib/tls/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) 2255 12:55:07 stat("/home/vinc17/./lib/tls", 0x7fff8b6d2b00) = -1 ENOENT (No such file or directory) 2255 12:55:07 open("/home/vinc17/./lib/x86_64/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) 2255 12:55:07 stat("/home/vinc17/./lib/x86_64", 0x7fff8b6d2b00) = -1 ENOENT (No such file or directory) 2255 12:55:07 open("/home/vinc17/./lib/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) 2255 12:55:07 stat("/home/vinc17/./lib", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 2255 12:55:07 open("/etc/ld.so.cache", O_RDONLY) = 4 2255 12:55:07 fstat(4, {st_mode=S_IFREG|0644, st_size=148038, ...}) = 0 2255 12:55:07 mmap(NULL, 148038, PROT_READ, MAP_PRIVATE, 4, 0) = 0x7f116518a000 2255 12:55:07 close(4) = 0 2255 12:55:07 access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory) 2255 12:55:07 open("/lib/x86_64-linux-gnu/libc.so.6", O_RDONLY) = 4 2255 12:55:07 read(4, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\300\357\1\0\0\0\0\0"..., 832) = 832 2255 12:55:07 fstat(4, {st_mode=S_IFREG|0755, st_size=1595408, ...}) = 0 2255 12:55:07 mmap(NULL, 3709016, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 4, 0) = 0x7f1164c08000 2255 12:55:07 mprotect(0x7f1164d88000, 2097152, PROT_NONE) = 0 2255 12:55:07 mmap(0x7f1164f88000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 4, 0x180000) = 0x7f1164f88000 2255 12:55:07 mmap(0x7f1164f8d000, 18520, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f1164f8d000 2255 12:55:07 close(4) = 0 2255 12:55:07 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1165189000 2255 12:55:07 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1165188000 2255 12:55:07 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1165187000 2255 12:55:07 arch_prctl(ARCH_SET_FS, 0x7f1165188700) = 0 2255 12:55:07 mprotect(0x7f1164f88000, 16384, PROT_READ) = 0 2255 12:55:07 mprotect(0x7f11651b1000, 4096, PROT_READ) = 0 2255 12:55:07 munmap(0x7f116518a000, 148038) = 0 2255 12:55:07 getpid() = 2255 2255 12:55:07 rt_sigaction(SIGCHLD, {0x40f270, ~[RTMIN RT_1], SA_RESTORER, 0x7f1164c3a4f0}, NULL, 8) = 0 2255 12:55:07 geteuid() = 1000 2255 12:55:07 brk(0) = 0x149d000 2255 12:55:07 brk(0x14be000) = 0x14be000 2255 12:55:07 getppid() = 2254 2255 12:55:07 stat("/home/vinc17/wd/bugs", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 2255 12:55:07 stat(".", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 2255 12:55:07 open("/home/vinc17/wd/bugs/less-test-open.sh", O_RDONLY) = 4 2255 12:55:07 fcntl(4, F_DUPFD, 10) = 10 2255 12:55:07 close(4) = 0 2255 12:55:07 fcntl(10, F_SETFD, FD_CLOEXEC) = 0 2255 12:55:07 rt_sigaction(SIGINT, NULL, {SIG_DFL, [], 0}, 8) = 0 2255 12:55:07 rt_sigaction(SIGINT, {0x40f270, ~[RTMIN RT_1], SA_RESTORER, 0x7f1164c3a4f0}, NULL, 8) = 0 2255 12:55:07 rt_sigaction(SIGQUIT, NULL, {SIG_IGN, [], 0}, 8) = 0 2255 12:55:07 rt_sigaction(SIGTERM, NULL, {SIG_DFL, [], 0}, 8) = 0 2255 12:55:07 rt_sigaction(SIGTERM, {SIG_DFL, ~[RTMIN RT_1], SA_RESTORER, 0x7f1164c3a4f0}, NULL, 8) = 0 2255 12:55:07 read(10, "#!/bin/sh\ncat \"$@\"\n", 8192) = 19 2255 12:55:07 stat("/home/vinc17/eftests/bin/cat", 0x7fff8b6d30d0) = -1 ENOENT (No such file or directory) 2255 12:55:07 stat("/home/vinc17/bin/cat", 0x7fff8b6d30d0) = -1 ENOENT (No such file or directory) 2255 12:55:07 stat("/home/vinc17/./bin/cat", 0x7fff8b6d30d0) = -1 ENOENT (No such file or directory) 2255 12:55:07 stat("/home/vinc17/perl5/bin/cat", 0x7fff8b6d30d0) = -1 ENOENT (No such file or directory) 2255 12:55:07 stat("/usr/local/bin/cat", 0x7fff8b6d30d0) = -1 ENOENT (No such file or directory) 2255 12:55:07 stat("/usr/bin/cat", 0x7fff8b6d30d0) = -1 ENOENT (No such file or directory) 2255 12:55:07 stat("/bin/cat", {st_mode=S_IFREG|0755, st_size=51856, ...}) = 0 2255 12:55:07 clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f11651889d0) = 2256 2256 12:55:07 close(10) = 0 2255 12:55:07 wait4(-1, <unfinished ...> 2256 12:55:07 execve("/bin/cat", ["cat", "less-test-file"], [/* 100 vars */]) = 0 2256 12:55:07 brk(0) = 0xe20000 2256 12:55:07 access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory) 2256 12:55:07 mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff1e5297000 2256 12:55:07 access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory) 2256 12:55:07 open("/lib64/tls/x86_64/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) 2256 12:55:07 stat("/lib64/tls/x86_64", 0x7fffeb325000) = -1 ENOENT (No such file or directory) 2256 12:55:07 open("/lib64/tls/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) 2256 12:55:07 stat("/lib64/tls", 0x7fffeb325000) = -1 ENOENT (No such file or directory) 2256 12:55:07 open("/lib64/x86_64/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) 2256 12:55:07 stat("/lib64/x86_64", 0x7fffeb325000) = -1 ENOENT (No such file or directory) 2256 12:55:07 open("/lib64/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) 2256 12:55:07 stat("/lib64", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 2256 12:55:07 open("/home/vinc17/./lib/tls/x86_64/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) 2256 12:55:07 stat("/home/vinc17/./lib/tls/x86_64", 0x7fffeb325000) = -1 ENOENT (No such file or directory) 2256 12:55:07 open("/home/vinc17/./lib/tls/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) 2256 12:55:07 stat("/home/vinc17/./lib/tls", 0x7fffeb325000) = -1 ENOENT (No such file or directory) 2256 12:55:07 open("/home/vinc17/./lib/x86_64/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) 2256 12:55:07 stat("/home/vinc17/./lib/x86_64", 0x7fffeb325000) = -1 ENOENT (No such file or directory) 2256 12:55:07 open("/home/vinc17/./lib/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or directory) 2256 12:55:07 stat("/home/vinc17/./lib", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0 2256 12:55:07 open("/etc/ld.so.cache", O_RDONLY) = 4 2256 12:55:07 fstat(4, {st_mode=S_IFREG|0644, st_size=148038, ...}) = 0 2256 12:55:07 mmap(NULL, 148038, PROT_READ, MAP_PRIVATE, 4, 0) = 0x7ff1e5272000 2256 12:55:07 close(4) = 0 2256 12:55:07 access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory) 2256 12:55:07 open("/lib/x86_64-linux-gnu/libc.so.6", O_RDONLY) = 4 2256 12:55:07 read(4, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\300\357\1\0\0\0\0\0"..., 832) = 832 2256 12:55:07 fstat(4, {st_mode=S_IFREG|0755, st_size=1595408, ...}) = 0 2256 12:55:07 mmap(NULL, 3709016, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 4, 0) = 0x7ff1e4cf0000 2256 12:55:07 mprotect(0x7ff1e4e70000, 2097152, PROT_NONE) = 0 2256 12:55:07 mmap(0x7ff1e5070000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 4, 0x180000) = 0x7ff1e5070000 2256 12:55:07 mmap(0x7ff1e5075000, 18520, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7ff1e5075000 2256 12:55:07 close(4) = 0 2256 12:55:07 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff1e5271000 2256 12:55:07 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff1e5270000 2256 12:55:07 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ff1e526f000 2256 12:55:07 arch_prctl(ARCH_SET_FS, 0x7ff1e5270700) = 0 2256 12:55:07 mprotect(0x7ff1e5070000, 16384, PROT_READ) = 0 2256 12:55:07 mprotect(0x60b000, 4096, PROT_READ) = 0 2256 12:55:07 mprotect(0x7ff1e5299000, 4096, PROT_READ) = 0 2256 12:55:07 munmap(0x7ff1e5272000, 148038) = 0 2256 12:55:07 open("/usr/lib/locale/locale-archive", O_RDONLY) = 4 2256 12:55:07 fstat(4, {st_mode=S_IFREG|0644, st_size=110939968, ...}) = 0 2256 12:55:07 mmap(NULL, 110939968, PROT_READ, MAP_PRIVATE, 4, 0) = 0x7ff1de323000 2256 12:55:07 close(4) = 0 2256 12:55:07 brk(0) = 0xe20000 2256 12:55:07 brk(0xe41000) = 0xe41000 2256 12:55:07 fstat(1, {st_mode=S_IFIFO|0600, st_size=0, ...}) = 0 2256 12:55:07 open("less-test-file", O_RDONLY) = 4 2256 12:55:07 fstat(4, {st_mode=S_IFREG|0644, st_size=5, ...}) = 0 2256 12:55:07 fadvise64(4, 0, 0, POSIX_FADV_SEQUENTIAL) = 0 2256 12:55:07 read(4, "blah\n", 32768) = 5 2256 12:55:07 write(1, "blah\n", 5) = 5 2253 12:55:07 <... read resumed> "b", 1) = 1 2256 12:55:07 read(4, "", 32768) = 0 2253 12:55:07 stat("-", <unfinished ...> 2256 12:55:07 close(4 <unfinished ...> 2253 12:55:07 <... stat resumed> 0x7fff9d73b3e0) = -1 ENOENT (No such file or directory) 2256 12:55:07 <... close resumed> ) = 0 2253 12:55:07 write(1, "\33[?1049h\33[?1h\33=\r", 16 <unfinished ...> 2256 12:55:07 close(1) = 0 2253 12:55:07 <... write resumed> ) = 16 2256 12:55:07 close(2 <unfinished ...> 2253 12:55:07 read(4, <unfinished ...> 2256 12:55:07 <... close resumed> ) = 0 2253 12:55:07 <... read resumed> "lah\n", 8191) = 4 2256 12:55:07 exit_group(0) = ? 2253 12:55:07 write(1, "blah\n", 5) = 5 2253 12:55:07 read(4, <unfinished ...> 2255 12:55:07 <... wait4 resumed> [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 2256 2255 12:55:07 --- SIGCHLD (Child exited) @ 0 (0) --- 2255 12:55:07 rt_sigreturn(0x11) = 2256 2255 12:55:07 read(10, "", 8192) = 0 2255 12:55:07 exit_group(0) = ? 2254 12:55:07 <... wait4 resumed> [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 2255 2254 12:55:07 --- SIGCHLD (Child exited) @ 0 (0) --- 2254 12:55:07 rt_sigreturn(0x11) = 2255 2254 12:55:07 exit_group(0) = ? 2253 12:55:07 <... read resumed> "", 8187) = 0 2253 12:55:07 --- SIGCHLD (Child exited) @ 0 (0) --- 2253 12:55:07 write(1, "\33[7mless-test-file (END)\33[27m\33[K", 32) = 32 2253 12:55:07 read(3, "q", 1) = 1 2253 12:55:11 close(4) = 0 2253 12:55:11 wait4(2254, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 2254 2253 12:55:11 write(1, "\r\33[K\33[?1l\33>\33[?1049l", 19) = 19 2253 12:55:11 fsync(3) = -1 EINVAL (Invalid argument) 2253 12:55:11 ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig -icanon -echo ...}) = 0 2253 12:55:11 ioctl(3, SNDCTL_TMR_STOP or TCSETSW, {B38400 opost isig icanon echo ...}) = 0 2253 12:55:11 ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo ...}) = 0 2253 12:55:11 exit_group(0) = ? The problem is that the wait4 from process 2253 (less) is too late. > Less creates the LESSOPEN process with popen and in all normal exit > cases, less calls pclose at exit. Is it possible there is a bug in > pclose on the system you're testing? If the child process has terminated earlier, less should call pclose just after (in order to avoid the zombie until less is quit), not at exit. -- Vincent Lefèvre <[email protected]> - Web: <http://www.vinc17.net/> 100% accessible validated (X)HTML - Blog: <http://www.vinc17.net/blog/> Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon) -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected]
