Add support for sys_pivot_root and sys_unshare. Patch from
Steven Stewart-Gallus <sstewartgallus00@mylangara.bc.ca>.
n-i-bz (patch on dev@, 27 Aug 2014)
update callgrind and cachegrind filtering logic following rev 14469
rev 14469 gives better description of the tweak done to the
simulated cache. Update filtering logic to filter this (variable) tweaking
msg.
Mark Wielaard [Sat, 6 Sep 2014 19:29:51 +0000 (19:29 +0000)]
readstabs.c: Don't include a.out.h, just define the stabs symbol nlist entry.
readstabs.c tries to include a.out.h to get the stabs symbol list entry
definition. STABS isn't specifically tied to the a.out format though.
The symbol entry structure just happens to be defined in the a.out.h
header. The header isn't really standard though. It might be provided
by glibc or the kernel in different locations. And not all arches support
the a.out format so the header might not even exist. Just define the
needed nlist struct entry directly in readstabs.c for VGO_linux. All
arches in glibc and the kernel use the same one anyway.
Mark Wielaard [Sat, 6 Sep 2014 17:37:55 +0000 (17:37 +0000)]
nightly: Try harder to get vendor stuff.
/etc/issue.net might just contain control chars (like \S) a generic welcome
message or omit the precise version. The newest standard is /etc/os-release
http://www.freedesktop.org/software/systemd/man/os-release.html
Otherwise there is often lsb_release
http://refspecs.linuxbase.org/LSB_3.1.0/LSB-Core-generic/LSB-Core-generic/lsbrelease.html
Try those first, fall back to /etc/issue.net if neither is there.
drd: Make regression test output independent of --read-inline-info
There are plans to enable --read-inline-info=yes for all Valgrind
tools. Hence make the DRD regression test output independent of how
--read-inline-info has been set.
Partial bypass for 338803 Handling of dwz debug alt files or cross-CU is broken
This patch avoids dereferencing absori that are in other CUs than
the CU currently being read.
This avoids dwarf reading errors when reading inlined information.
The bypass results in inlined function being reported as
UnknownInlinedFun rather than the real correct function name.
--read-var-info=yes is still broken for unknown reasons
(probably type reading is doing some other cross-CU references ?).
Mark Wielaard [Fri, 5 Sep 2014 22:50:51 +0000 (22:50 +0000)]
Always check crc in open_debug_file for now. Bug #338791 followup.
Revision r14464 made it so that debug alt files could be found by their
build-id or their (relative) file path. Debug alt files are matched using
the given build-id, but by crc. Calculating the full CRC is costly, but
currently still needed to avoid misidentifying the main file as debug
file. Slightly more efficient would be to use fstat to check we aren't
actually opening the main file under any other name (but that only works
for local DiImages). Or we could check that the file being opened actually
has at least one .debug* section. But this change was the minimal patch
to make things work as before.
Be more careful to separate build flags for the preload shared objects
as opposed to the valgrind code proper. In particular, make sure that
-mpreferred-stack-boundary=2 does not get used for the preload shared
objects, since that can cause the stack to become misaligned and leads
to segfaults. Modified version of a patch from Matthias Schwarzott
(zzam@gentoo.org). Fixes #324050.
Also, fix the configure check in configure.ac for
-mpreferred-stack-boundary=2 so that it checks whether this is
allowable for 32-bit code generation even on 64-bit (x86) hosts. This
check was wrong before now and led to 32-bit builds on 64-bit hosts
generating poorer code for speed critical helper functions (eg
helperc_LOADV32le) than on 32-bit builds on 32-bit hosts.
maybe_tweak_LLc: generalise this so that it can mash more or less any
cache size and associativity pair into something the simulator can
actually handle, by increasing the associativity whilst reducing the
number of sets, so that the number of sets becomes a power of two.
Fixes #333501.
Carl Love [Fri, 5 Sep 2014 18:05:24 +0000 (18:05 +0000)]
The update fixes a format issue in the PPC test
none/tests/ppc32/jm-insns.c and none/tests/ppc64/jm-insns.c.
The BE and LE output expect files are updated as well.
There is no Bugzilla related to this update. The issue
was found and the initial patch and BE output update
was done by Florian Krohm <florian@eich-krohm.de>.
Carl Love <cel@us.ibm.com> added the LE output update.
Mark Wielaard [Fri, 5 Sep 2014 14:25:17 +0000 (14:25 +0000)]
Bug 338791 Handle debug alt dwz files that are relative to the debug file.
readdwarf3 would only look for alt dwz files using the build-id.
But alt files can be installed relative to the debug (or main) file.
Fix find_debug_file to allow searching of relative files even if
we don't want an ET_REL (rel_ok) file, and pass the build-id to
open_debug_file so it can be checked. Add the debug file path to
_DebugInfoFSM and set it in find_debug_file once opened. Pass the
dbgname or filename as relative file to resolve an altfile in
read_elf_debug_info when we ahava an debugaltlink_escn.
* All Linux targets: add minimal ioctl support for the ION_IOC family
* Android targets: change proprietary-ioctl support for GPUs from
being a build-time #define kludge to being controlled by --kernel-variant,
as it should be. Update documentation accordingly.
gcc on arm64 -Og produces a (false positive) warning that
stackPos might be used uninitialised.
Silence gcc by assigning a value to stackPos.
This value must be overriden if a stack description is found.
The fact that the value is overriden is asserted.
Update helgrind default suppression so that it matches with
both --read-inline-info=yes or =no
Some piece of code in glibc produces an error to be suppressed
with default helgrind supp file.
The stacktrace with inline info is:
==14392== Possible data race during write of size 1 at 0x5BB36A7 by thread #1
==14392== Locks held: none
==14392== at 0x4C2B3B5: mempcpy (vg_replace_strmem.c:1354)
==14392== by 0x40107FD: _dl_allocate_tls_init (dl-tls.c:437)
==14392== by 0x4E3BF0F: get_cached_stack (allocatestack.c:250)
==14392== by 0x4E3BF0F: allocate_stack (allocatestack.c:486)
==14392== by 0x4E3BF0F: pthread_create@@GLIBC_2.2.5 (pthread_create.c:460)
==14392== by 0x4C3039C: pthread_create_WRK (hg_intercepts.c:270)
==14392== by 0x4C304AB: pthread_create@* (hg_intercepts.c:301)
==14392== by 0x400926: main (tc22_exit_w_lock.c:42)
stack trace without inline info:
==5432== at 0x4C2B3B5: mempcpy (vg_replace_strmem.c:1354)
==5432== by 0x40107FD: _dl_allocate_tls_init (dl-tls.c:437)
==5432== by 0x4E3BF0F: pthread_create@@GLIBC_2.2.5 (allocatestack.c:250)
==5432== by 0x4C3039C: pthread_create_WRK (hg_intercepts.c:270)
==5432== by 0x4C304AB: pthread_create@* (hg_intercepts.c:301)
==5432== by 0x400926: main (tc22_exit_w_lock.c:42)
The suppression supposed to match the above is:
{
helgrind---_dl_allocate_tls
Helgrind:Race
fun:mempcpy
fun:_dl_allocate_tls_init
fun:pthread_create@@GLIBC_2.2*
fun:pthread_create_WRK
fun:pthread_create@*
}
This only matches the 2nd stack trace, does not match the one
with inline info.
2 solutions:
* only match the last top 2 fun, i.e. a suppression such as:
{
helgrind---_dl_allocate_tls
Helgrind:Race
fun:mempcpy
fun:_dl_allocate_tls_init
}
Or alternatively use ...
{
helgrind---_dl_allocate_tls
Helgrind:Race
fun:mempcpy
fun:_dl_allocate_tls_init
...
fun:pthread_create@@GLIBC_2.2*
fun:pthread_create_WRK
fun:pthread_create@*
}
As helgrind suppressions are usually precise and/or use ...,
this last approach chosen
The 4th parameter of lzo1x_decompress_safe has lzo_uint * type
which, despite the name, is a pointer to an unsigned long.
So we should be passing arguments of matching type.
Spotted by the Coverity checker.
Mark Wielaard [Tue, 2 Sep 2014 10:16:42 +0000 (10:16 +0000)]
Tweak gdbserver_tests/mcinfcallWSRU.stderrB.exp to match more gdb versions.
Some gdb versions don't show the source line:number after switching
threads in #0 0x........ in do_burn (). Filter "at line:number" out
and don't expect it.
prepare for changing the default of --read-inline-info
suppvarinfo5 is using suppression entries that explicitely checks
for a stack trace without inline info.
So, indicate to not read the inline info.
This also means we will have (and keep) at least one test testing the
behaviour of --read-inline-info=no
Prepare to change the default for --read-inline-info from =no to =yes
The interception/replacements functions should preferrably not
depend on the value of --read-inline-info.
The idea is to change the default from no to yes.
Depending on the no or yes, some intercept/replacement functions
that are inlined will be shown or not shown in stacktraces.
To have such stack traces not depending on the value of --read-inline-info,
such functions should either be marked as
noinline
or be defined as macros.
Rename a bunch of __unused fields to __unused0, since some Android
NDK's appear to #define __unused to __attribute__((__unused__)),
causing the build to fail in bizarre ways.
Remove two extraneous Ls introduced by mistake in r14319, which had
the effect of causing CFLAGS environment variable settings to be
ignored for certain parts of the build (genoffsets.c, for one).
Mark Wielaard [Mon, 1 Sep 2014 15:29:55 +0000 (15:29 +0000)]
Bug 338703 helgrind on arm-linux gets false positives in dynamic loader.
There are a couple of issues with helgrind on arm-linux with glibc:
- Thread creation stack traces cannot unwind through clone
(cfi ends right after syscall)
- ld.so has a special "hard float" name that isn't recognized as special
(ld-linux-armhf.so.3)
- Races are found when manipulating GOT sections.
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