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From: Julian S. <js...@ac...> - 2005-10-11 22:10:02
|
> > > Only on x86 though - ppc32 has proper X support and all amd64 > > > processors should have NX and hence proper X support. > > > > > > It is only pre-NX bit 32 bit x86 processors that have the problem > > > by the sounds of it. I committed a suitable kludge in r4901. J |
|
From: <sv...@va...> - 2005-10-11 22:06:41
|
Author: sewardj
Date: 2005-10-11 23:06:29 +0100 (Tue, 11 Oct 2005)
New Revision: 4901
Log:
Make sync checking work on recent x86 kernels (eg SuSE 10) which mark
many 'r' sections also as 'x' because x86 can't really distinguish
them. The change just regards 'x' and 'r' as equivalent on x86.
Checking on ppc32/amd64 is unchanged.
Modified:
trunk/coregrind/m_aspacemgr/aspacemgr.c
Modified: trunk/coregrind/m_aspacemgr/aspacemgr.c
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
--- trunk/coregrind/m_aspacemgr/aspacemgr.c 2005-10-11 18:21:47 UTC (rev =
4900)
+++ trunk/coregrind/m_aspacemgr/aspacemgr.c 2005-10-11 22:06:29 UTC (rev =
4901)
@@ -53,6 +53,11 @@
#include "pub_core_aspacemgr.h" // self
=20
=20
+/* Note: many of the exported functions implemented below are
+ described more fully in comments in pub_core_aspacemgr.h.
+*/
+
+
/*-----------------------------------------------------------------*/
/*--- ---*/
/*--- The Address Space Manager's state. ---*/
@@ -417,16 +422,6 @@
}
=20
=20
-/////////////////////////////////////////////////////////////////
-/////////////////////////////////////////////////////////////////
-/////////////////////////////////////////////////////////////////
-/////////////////////////////////////////////////////////////////
-
-
-/* Note: many of the exported functions implemented below are
- described more fully in comments in pub_core_aspacemgr.h.
-*/
-
/*-----------------------------------------------------------------*/
/*--- ---*/
/*--- Displaying the segment array. ---*/
@@ -866,7 +861,8 @@
UInt dev, UInt ino, ULong offs=
et,=20
const UChar* filename )
{
- Int iLo, iHi, i;
+ Int iLo, iHi, i;
+ Bool sloppyRXcheck;
=20
/* If a problem has already been detected, don't continue comparing
segments, so as to avoid flooding the output with error
@@ -890,6 +886,23 @@
aspacem_assert(nsegments[iLo].start <=3D addr );
aspacem_assert(nsegments[iHi].end >=3D addr + len - 1 );
=20
+ /* x86 doesn't differentiate 'x' and 'r' (at least, all except the
+ most recent NX-bit enabled CPUs) and so recent kernels mark most
+ readable sections also as executable (in the /proc/self/maps
+ they give out), which makes checking fail. When sloppyRXcheck
+ is True, the checker therefore regards R and X as
+ interchangeable. */
+ sloppyRXcheck =3D False;
+# if defined(VGA_x86)
+ sloppyRXcheck =3D True;
+# endif
+
+ if (sloppyRXcheck) {
+ /* If either bit is set, ensure both are set. */
+ if (prot & (VKI_PROT_READ|VKI_PROT_EXEC))
+ prot |=3D (VKI_PROT_READ|VKI_PROT_EXEC);
+ }
+
/* NSegments iLo .. iHi inclusive should agree with the presented
data. */
for (i =3D iLo; i <=3D iHi; i++) {
@@ -921,6 +934,12 @@
if (filename && 0=3D=3DVG_(strcmp)(filename, "/dev/zero (deleted)"=
))
cmp_devino =3D False;
=20
+ if (sloppyRXcheck) {
+ /* If either bit is set, ensure both are set. */
+ if (seg_prot & (VKI_PROT_READ|VKI_PROT_EXEC))
+ seg_prot |=3D (VKI_PROT_READ|VKI_PROT_EXEC);
+ }
+
same =3D same
&& seg_prot =3D=3D prot
&& (cmp_devino
|
|
From: <sv...@va...> - 2005-10-11 18:21:59
|
Author: njn Date: 2005-10-11 19:21:47 +0100 (Tue, 11 Oct 2005) New Revision: 4900 Log: update Modified: trunk/docs/internals/3_0_BUGSTATUS.txt Modified: trunk/docs/internals/3_0_BUGSTATUS.txt =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D --- trunk/docs/internals/3_0_BUGSTATUS.txt 2005-10-10 16:49:01 UTC (rev 4= 899) +++ trunk/docs/internals/3_0_BUGSTATUS.txt 2005-10-11 18:21:47 UTC (rev 4= 900) @@ -17,6 +17,7 @@ 110183 tail of page with _end 82301 FV memory layout too rigid 98278 Infinite recursion possible when allocating memory +108994 Valgrind runs out of memory due to 133x overhead =20 Will fix in 3.1. Long delay seems to be caused by amd64-Gentoo kernel not liking large mmap/munmap requests. Other bugs also look like |
|
From: <js...@ac...> - 2005-10-11 03:01:24
|
Nightly build on phoenix ( SuSE 9.1 ) started at 2005-10-11 03:30:00 BST Checking out vex source tree ... done Building vex ... done Checking out valgrind source tree ... done Configuring valgrind ... done Building valgrind ... done Running regression tests ... failed Regression test results follow == 190 tests, 2 stderr failures, 0 stdout failures ================= none/tests/faultstatus (stderr) none/tests/x86/int (stderr) |
|
From: Tom H. <to...@co...> - 2005-10-11 02:40:39
|
Nightly build on dunsmere ( athlon, Fedora Core 4 ) started at 2005-10-11 03:30:05 BST Results unchanged from 24 hours ago Checking out valgrind source tree ... done Configuring valgrind ... done Building valgrind ... done Running regression tests ... failed Regression test results follow == 192 tests, 11 stderr failures, 4 stdout failures ================= memcheck/tests/leak-tree (stderr) memcheck/tests/mempool (stderr) memcheck/tests/pointer-trace (stderr) memcheck/tests/weirdioctl (stderr) memcheck/tests/x86/scalar (stderr) memcheck/tests/xml1 (stderr) none/tests/faultstatus (stderr) none/tests/map_unmap (stdout) none/tests/map_unmap (stderr) none/tests/mremap2 (stdout) none/tests/sigstackgrowth (stdout) none/tests/sigstackgrowth (stderr) none/tests/stackgrowth (stdout) none/tests/stackgrowth (stderr) none/tests/x86/int (stderr) |
|
From: Tom H. <th...@cy...> - 2005-10-11 02:28:14
|
Nightly build on alvis ( i686, Red Hat 7.3 ) started at 2005-10-11 03:15:04 BST Results unchanged from 24 hours ago Checking out valgrind source tree ... done Configuring valgrind ... done Building valgrind ... done Running regression tests ... failed Regression test results follow == 191 tests, 16 stderr failures, 1 stdout failure ================= memcheck/tests/addressable (stderr) memcheck/tests/describe-block (stderr) memcheck/tests/erringfds (stderr) memcheck/tests/leak-0 (stderr) memcheck/tests/leak-cycle (stderr) memcheck/tests/leak-regroot (stderr) memcheck/tests/leak-tree (stderr) memcheck/tests/match-overrun (stderr) memcheck/tests/mempool (stderr) memcheck/tests/nanoleak (stderr) memcheck/tests/partiallydefinedeq (stderr) memcheck/tests/pointer-trace (stderr) memcheck/tests/sigkill (stderr) memcheck/tests/stack_changes (stderr) none/tests/faultstatus (stderr) none/tests/x86/int (stderr) none/tests/x86/yield (stdout) |
|
From: Tom H. <th...@cy...> - 2005-10-11 02:26:20
|
Nightly build on ginetta ( i686, Red Hat 8.0 ) started at 2005-10-11 03:10:13 BST Results unchanged from 24 hours ago Checking out valgrind source tree ... done Configuring valgrind ... done Building valgrind ... done Running regression tests ... failed Regression test results follow == 191 tests, 4 stderr failures, 0 stdout failures ================= memcheck/tests/mempool (stderr) memcheck/tests/pointer-trace (stderr) none/tests/faultstatus (stderr) none/tests/x86/int (stderr) |
|
From: Tom H. <th...@cy...> - 2005-10-11 02:22:05
|
Nightly build on dellow ( x86_64, Fedora Core 4 ) started at 2005-10-11 03:10:12 BST Results unchanged from 24 hours ago Checking out valgrind source tree ... done Configuring valgrind ... done Building valgrind ... done Running regression tests ... failed Regression test results follow == 166 tests, 7 stderr failures, 2 stdout failures ================= memcheck/tests/sigprocmask (stderr) memcheck/tests/strchr (stderr) memcheck/tests/weirdioctl (stderr) memcheck/tests/xml1 (stderr) none/tests/as_mmap (stderr) none/tests/as_shm (stdout) none/tests/as_shm (stderr) none/tests/faultstatus (stderr) none/tests/mremap2 (stdout) |
|
From: Tom H. <th...@cy...> - 2005-10-11 02:19:45
|
Nightly build on aston ( x86_64, Fedora Core 3 ) started at 2005-10-11 03:05:13 BST Results unchanged from 24 hours ago Checking out valgrind source tree ... done Configuring valgrind ... done Building valgrind ... done Running regression tests ... failed Regression test results follow == 166 tests, 7 stderr failures, 2 stdout failures ================= memcheck/tests/sigprocmask (stderr) memcheck/tests/strchr (stderr) memcheck/tests/weirdioctl (stderr) memcheck/tests/xml1 (stderr) none/tests/as_mmap (stderr) none/tests/as_shm (stdout) none/tests/as_shm (stderr) none/tests/faultstatus (stderr) none/tests/mremap2 (stdout) |
|
From: Tom H. <th...@cy...> - 2005-10-11 02:14:45
|
Nightly build on gill ( x86_64, Fedora Core 2 ) started at 2005-10-11 03:00:03 BST Results unchanged from 24 hours ago Checking out valgrind source tree ... done Configuring valgrind ... done Building valgrind ... done Running regression tests ... failed Regression test results follow == 166 tests, 8 stderr failures, 1 stdout failure ================= memcheck/tests/sigprocmask (stderr) memcheck/tests/strchr (stderr) memcheck/tests/weirdioctl (stderr) memcheck/tests/xml1 (stderr) none/tests/as_mmap (stderr) none/tests/as_shm (stdout) none/tests/as_shm (stderr) none/tests/faultstatus (stderr) none/tests/fdleak_fcntl (stderr) |