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Gentoo's Bugzilla – Attachment 59405 Details for
Bug 93366
sys-libs/glibc: sem_wait() and sem_post() race
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Valgrind output
valgrind-output (text/plain), 3.63 KB, created by
Alberto Bertogli
on 2005-05-20 13:09:21 UTC
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Description:
Valgrind output
Filename:
MIME Type:
Creator:
Alberto Bertogli
Created:
2005-05-20 13:09:21 UTC
Size:
3.63 KB
patch
obsolete
> >These are some samples of the output, showing the valgrind output. They've all >been recorded on my machine, except for the last one which was on my friend's >(and has more debugging information that you might find more useful). The >lines before and after are the testcase's output showing some progress. > >------ > >poster 56500000 >waiter 56500000 >==2005-04-30 14:38:21.836 464== Thread 3: >==2005-04-30 14:38:21.836 464== Syscall param futex(futex) points to unaddressable byte(s) >==2005-04-30 14:38:21.836 464== at 0x1B9244A2: sem_post@@GLIBC_2.1 (in /lib/libpthread-2.3.4.so) >==2005-04-30 14:38:21.836 464== by 0x1B9209A0: start_thread (in /lib/libpthread-2.3.4.so) >==2005-04-30 14:38:21.836 464== by 0x1B9DD9E9: clone (in /lib/libc-2.3.4.so) >==2005-04-30 14:38:21.836 464== Address 0x1C2EB818 is 0 bytes inside a block of size 16 free'd >==2005-04-30 14:38:21.836 464== at 0x1B902B5C: free (vg_replace_malloc.c:152) >==2005-04-30 14:38:21.836 464== by 0x80486E5: waiter (semtest.c:38) >==2005-04-30 14:38:21.836 464== by 0x1B9209A0: start_thread (in /lib/libpthread-2.3.4.so) >==2005-04-30 14:38:21.836 464== by 0x1B9DD9E9: clone (in /lib/libc-2.3.4.so) >poster 57000000 >waiter 57000000 > >------ > >poster 128500000 >waiter 128500000 >==2005-04-30 16:45:36.865 5908== Thread 3: >==2005-04-30 16:45:36.865 5908== Syscall param futex(futex) points to unaddressable byte(s) >==2005-04-30 16:45:36.866 5908== at 0x1B9244A2: sem_post@@GLIBC_2.1 (in /lib/libpthread-2.3.4.so) >==2005-04-30 16:45:36.866 5908== by 0x1B9209A0: start_thread (in /lib/libpthread-2.3.4.so) >==2005-04-30 16:45:36.866 5908== by 0x1B9DD9E9: clone (in /lib/libc-2.3.4.so) >==2005-04-30 16:45:36.868 5908== Address 0x1C2F0758 is 0 bytes inside a block of size 16 free'd >==2005-04-30 16:45:36.868 5908== at 0x1B902B5C: free (vg_replace_malloc.c:152) >==2005-04-30 16:45:36.868 5908== by 0x80486E5: waiter (semtest.c:38) >==2005-04-30 16:45:36.873 5908== by 0x1B9209A0: start_thread (in /lib/libpthread-2.3.4.so) >==2005-04-30 16:45:36.873 5908== by 0x1B9DD9E9: clone (in /lib/libc-2.3.4.so) >poster 129000000 >waiter 129000000 > >------ > >poster 49000000 >waiter 49000000 >==2005-04-30 20:39:12.607 16319== Thread 3: >==2005-04-30 20:39:12.608 16319== Syscall param futex(futex) points to unaddressable >byte(s) >==2005-04-30 20:39:12.608 16319== at 0x1B9244A2: sem_post@@GLIBC_2.1 (in /lib/libpthread-2.3.4.so) >==2005-04-30 20:39:12.608 16319== by 0x1B9209A0: start_thread (in /lib/libpthread-2.3.4.so) >==2005-04-30 20:39:12.608 16319== by 0x1B9DD9E9: clone (in /lib/libc-2.3.4.so) >==2005-04-30 20:39:12.608 16319== Address 0x1C33DB18 is 0 bytes inside a block of size 16 free'd >==2005-04-30 20:39:12.608 16319== at 0x1B902B5C: free (vg_replace_malloc.c:152) >==2005-04-30 20:39:12.608 16319== by 0x80486E5: waiter (semtest.c:38) >==2005-04-30 20:39:12.608 16319== by 0x1B9209A0: start_thread (in /lib/libpthread-2.3.4.so) >==2005-04-30 20:39:12.608 16319== by 0x1B9DD9E9: clone (in /lib/libc-2.3.4.so) >poster 49500000 >waiter 49500000 > >------ > >This one is my friend's. > > >poster 82000000 >waiter 82000000 >==30665== Thread 3: >==30665== Syscall param futex(futex) points to unaddressable byte(s) >==30665== at 0x1B921812: sem_post@@GLIBC_2.1 (sem_post.S:52) >==30665== by 0x1B91DA40: start_thread (pthread_create.c:269) >==30665== by 0x1B9DD739: clone (clone.S:102) >==30665== Address 0x1CD05628 is 0 bytes inside a block of size 16 free'd >==30665== at 0x1B9048AC: free (vg_replace_malloc.c:152) >==30665== by 0x8048705: waiter (semtest.c:41) >==30665== by 0x1B91DA40: start_thread (pthread_create.c:269) >==30665== by 0x1B9DD739: clone (clone.S:102) >poster 82500000 >waiter 82500000 > >
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bug 93366
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