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Neither FUTEX_WAKE or FUTEX_WAKE_BITSET actually dereference the

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futex at all (they just use the address) so we shouldn't insist on
it's contents being define. Fixes #224723.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@11048
This commit is contained in:
Tom Hughes 2010-02-16 15:05:55 +00:00
parent 811fdfeae2
commit e548bda0ec
1 changed files with 7 additions and 4 deletions
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11
coregrind/m_syswrap/syswrap-linux.c
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@ -933,8 +933,6 @@ PRE(sys_futex)
break;
}
PRE_MEM_READ( "futex(futex)", ARG1, sizeof(Int) );
*flags |= SfMayBlock;
switch(ARG2 & ~(VKI_FUTEX_PRIVATE_FLAG|VKI_FUTEX_CLOCK_REALTIME)) {
@ -942,6 +940,7 @@ PRE(sys_futex)
case VKI_FUTEX_LOCK_PI:
case VKI_FUTEX_WAIT_BITSET:
case VKI_FUTEX_WAIT_REQUEUE_PI:
PRE_MEM_READ( "futex(futex)", ARG1, sizeof(Int) );
if (ARG4 != 0)
PRE_MEM_READ( "futex(timeout)", ARG4, sizeof(struct vki_timespec) );
break;
@ -950,14 +949,18 @@ PRE(sys_futex)
case VKI_FUTEX_CMP_REQUEUE:
case VKI_FUTEX_CMP_REQUEUE_PI:
case VKI_FUTEX_WAKE_OP:
PRE_MEM_READ( "futex(futex)", ARG1, sizeof(Int) );
PRE_MEM_READ( "futex(futex2)", ARG5, sizeof(Int) );
break;
case VKI_FUTEX_WAKE:
case VKI_FUTEX_FD:
case VKI_FUTEX_WAKE_BITSET:
case VKI_FUTEX_TRYLOCK_PI:
case VKI_FUTEX_UNLOCK_PI:
PRE_MEM_READ( "futex(futex)", ARG1, sizeof(Int) );
break;
case VKI_FUTEX_WAKE:
case VKI_FUTEX_WAKE_BITSET:
/* no additional pointers */
break;