libsandbox hanging?

[Jimbythemonkey]

well it seems that once bootstrap starts, and it recompile bash gcc and python it just hangs so i did and strace on bootstrap.sh here is the last few
linesrt_sigprocmask(SIG_BLOCK, NULL, [], = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], = 0
pipe([3, 4]) = 0
rt_sigprocmask(SIG_BLOCK, [INT CHLD], [], = 0
_llseek(255, -1609, [1389], SEEK_CUR) = 0
fork() = 6386
rt_sigprocmask(SIG_SETMASK, [], NULL, = 0
rt_sigaction(SIGCHLD, {0x42e5dc, [], 0}, {0x42e5dc, [], 0}, = 0
close(4) = 0
read(3,


looks like it wants to read something. also python hangs too check this out :
getpid() = 6388
rt_sigaction(SIGRT_0, {0x4002ef90, [], 0}, NULL, = 0
rt_sigaction(SIGRT_1, {0x4002eea4, [], 0}, NULL, = 0
rt_sigaction(SIGRT_2, {0x4002efe4, [], 0}, NULL, = 0
rt_sigprocmask(SIG_BLOCK, [RT_0], NULL, = 0
_sysctl({{CTL_KERN, KERN_VERSION}, 2, 0x7ffff628, 36, (nil), 0}) = 0
ioctl(0, TCGETS, {B38400 opost isig icanon echo ...}) = 0
brk(0) = 0x4d0d10
brk(0x4d0d40) = 0x4d0d40
brk(0x4d1000) = 0x4d1000
brk(0x4d2000) = 0x4d2000
brk(0x4d3000) = 0x4d3000
rt_sigprocmask(SIG_SETMASK, NULL, [RT_0], = 0
rt_sigsuspend([]

it seems that now sleep does not return either :
getpid() = 6390
rt_sigaction(SIGRT_0, {0x401f6f90, [], 0}, NULL, = 0
rt_sigaction(SIGRT_1, {0x401f6ea4, [], 0}, NULL, = 0
rt_sigaction(SIGRT_2, {0x401f6fe4, [], 0}, NULL, = 0
rt_sigprocmask(SIG_BLOCK, [RT_0], NULL, = 0
_sysctl({{CTL_KERN, KERN_VERSION}, 2, 0x7ffff638, 36, (nil), 0}) = 0
gettimeofday({1028062953, 173035}, NULL) = 0
brk(0) = 0x404108
brk(0x404138) = 0x404138
brk(0x405000) = 0x405000
rt_sigprocmask(SIG_SETMASK, NULL, [RT_0], = 0
rt_sigsuspend([]


notice anything strage? it seems that the sigsuspend never returns. is this overwrriten in libsandbox? i couldnt figure it out am i over looking something?

[tsuru]

I've had a similar problem in the past too but not in the bootstrap phase. It usually happens if an emerge crashes. Luckily enough after searching the forums I've found the answer... granted this is on a regular x86 not a big iron s390...

check to see if there is a /tmp/sandboxpids.tmp.... if there is.... delete that sucka! then try again.

That solved my problem...I hope that helps in some way

[Jimbythemonkey]

Thanks for the tip but alas it did not fix the problem everything is still the same and do you love the smile faces in my last post ????

[genfoo]

sandbox is a bad hack... it wraps glibc functions and is evil.. I would honestly disable sandbox, and if you're concerned about ebuilds messing with the real filesystem, then setup userpriv style sandboxing