approaching 4.5.21 release

[Mike Frysinger]

On Saturday, February 19, 2011 15:06:06 Dmitry V. Levin wrote:
> On Fri, Feb 18, 2011 at 09:52:54PM -0500, Mike Frysinger wrote:
> > testing 65c1a81f6ad628240445ba24d888d25b2fd69c1e:
> > 
> > ppc64: hangs hard when tracing forks
> 
> Could you find out what
> $ env -i strace -d -f /usr/bin/time /bin/true
> prints on that system, please?

# env -i ./strace -d -f /usr/bin/time /bin/true 
ptrace_setoptions = 0xe
 [wait(0x137f) = 11894]
pid 11894 stopped, [SIGSTOP]
 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
geteuid( [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
)                               = 0
 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
kill(11894, SIGSTOP [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
)                    = 0
 [wait(0x137f) = 11894]
pid 11894 stopped, [SIGSTOP]
--- SIGSTOP (Stopped (signal)) @ 0 (0) ---
 [wait(0x137f) = 11894]
pid 11894 stopped, [SIGSTOP]
--- SIGSTOP (Stopped (signal)) @ 0 (0) ---
 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
execve("/usr/bin/time", ["/usr/bin/time", "/bin/true"], [/* 0 vars */] 
[wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
) = 0
 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
brk(0 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
)                                  = 0x10015000
 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 
[wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
) = 0x40000027000
 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
access("/etc/ld.so.preload", R_OK [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
)      = -1 ENOENT (No such file or directory)
 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
open("/etc/ld.so.cache", O_RDONLY [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
)      = 3
 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
fstat(3,  [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
{st_mode=S_IFREG|0644, st_size=17083, ...}) = 0
 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
mmap(NULL, 17083, PROT_READ, MAP_PRIVATE, 3, 0 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
) = 0x40000028000
 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
close(3 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
)                                = 0
 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
open("/lib/libc.so.6", O_RDONLY [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
)        = 3
 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
read(3,  [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
"\177ELF\2\2\1\0\0\0\0\0\0\0\0\0\0\3\0\25\0\0\0\1\0\0\0\0\0\32Mp"..., 832) = 
832
 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
fstat(3,  [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
{st_mode=S_IFREG|0755, st_size=1753152, ...}) = 0
 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 
[wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
) = 0x4000002d000
 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
mmap(NULL, 1829592, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0 
[wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
) = 0x4000003b000
 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
mprotect(0x400001cc000, 61440, PROT_NONE [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
) = 0
 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
mmap(0x400001db000, 110592, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|
MAP_DENYWRITE, 3, 0x190000 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
) = 0x400001db000
 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
mmap(0x400001f6000, 15064, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|
MAP_ANONYMOUS, -1, 0 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
) = 0x400001f6000
 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
close(3 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
)                                = 0
 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 
[wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
) = 0x4000002e000
 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
mprotect(0x400001db000, 16384, PROT_READ [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
) = 0
 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
mprotect(0x10013000, 4096, PROT_READ [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
)   = 0
 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
mprotect(0x40000036000, 4096, PROT_READ [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
) = 0
 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
munmap(0x40000028000, 17083 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
)            = 0
 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
clone( [wait(0x1057f) = 11894]
pid 11894 stopped, [SIGTRAP]
Process 0 attached
 [wait(0x137f) = 11895]
Process 11895 attached (waiting for parent)
 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, 
child_tidptr=0x4000002d820) = 11895
 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
[pid 11894] rt_sigaction(SIGINT, {SIG_IGN, [INT], SA_RESTART},  [wait(0x57f) = 
11894]
pid 11894 stopped, [SIGTRAP]
{SIG_DFL, [], 0}, 8) = 0
 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
[pid 11894] rt_sigaction(SIGQUIT, {SIG_IGN, [QUIT], SA_RESTART},  [wait(0x57f) 
= 11894]
pid 11894 stopped, [SIGTRAP]
{SIG_DFL, [], 0}, 8) = 0
 [wait(0x57f) = 11894]
pid 11894 stopped, [SIGTRAP]
[pid 11894] wait4(-1, Process 11894 suspended
^Ccleanup: looking at pid 11894
 <unfinished ...>
cleanup: looking at pid 0
detach: checking sanity: Invalid argument
^C^C^C^C^C^C^C^C^C^C^C^C^C^C^C^Z
[1]+  Stopped                 env -i ./strace -d -f /usr/bin/time /bin/true
# kill -9 %1

[1]+  Stopped                 env -i ./strace -d -f /usr/bin/time /bin/true
# uname -a
[1]+  Killed                  env -i ./strace -d -f /usr/bin/time /bin/true
Linux rooster 2.6.28-gentoo #2 SMP Tue Dec 28 08:41:26 PST 2010 ppc64 POWER5+ 
(gs) CHRP IBM,9133-55A GNU/Linux
-mike
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