Change-Id: Ic16824482142d4de4d0b949459e36505ee944ff7
Reviewed-on: https://go-review.googlesource.com/c/go/+/448175
Reviewed-by: Robert Griesemer <gri@google.com>
Run-TryBot: Dan Kortschak <dan@kortschak.io>
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Reviewed-by: Ian Lance Taylor <iant@google.com>
Change-Id: I871a747b4b47bccc889f2fdc93a2bcebb041b719
Reviewed-on: https://go-review.googlesource.com/c/go/+/447895
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
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The size of gnuVersym should be multiples of 2. If not, the input is
invalid. No Library and Version information is added to sym in this
case. The current implementation of gnuVersion does not report errors
for invalid input.
While at here, bring back the comment that states that the undef entry
at the beginning is skipped. This is not an off-by-one error.
No test case because the problem can only happen for invalid data. Let
the fuzzer find cases like this.
Fixes#56429.
Change-Id: Ia39ad8bd509088a81cc77f7a76e23185d40a5765
GitHub-Last-Rev: 3be0cc1b15
GitHub-Pull-Request: golang/go#56431
Reviewed-on: https://go-review.googlesource.com/c/go/+/445555
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Reviewed-by: Ian Lance Taylor <iant@google.com>
This avoids allocating an overly large slice for corrupt input.
No test case because the problem can only happen for invalid data. Let
the fuzzer find cases like this.
Updates #33121.
Change-Id: Ie2d947a3865d3499034286f2d08d3e3204015f3e
GitHub-Last-Rev: 6c62fc3cec
GitHub-Pull-Request: golang/go#56405
Reviewed-on: https://go-review.googlesource.com/c/go/+/445076
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Reviewed-by: Heschi Kreinick <heschi@google.com>
LLVM recently introduced ZSTD compression for ELF sections. The error
message when failing to read the compressed section calls this
COMPRESS_ZLIB+2 while it should report it as COMPRESS_ZLIB+1.
Change-Id: I869aa69baf0c8c86665475b47343c790587cb39b
Reviewed-on: https://go-review.googlesource.com/c/go/+/443035
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Adds a package level doc comment to the debug/dwarf, debug/elf,
debug/macho, debug/pe, and debug/plan9obj noting that these packages
are not designed to be hardened against adversarial inputs.
Change-Id: I678d01bcdc8ad01c23805f09cc59e64cec6c3f76
Reviewed-on: https://go-review.googlesource.com/c/go/+/435417
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Julie Qiu <julieqiu@google.com>
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No test case because the problem can only happen for invalid data. Let
the fuzzer find cases like this.
Fixes#56129
Change-Id: I6c81933781384c5e2c8ba0fd99cec50455b9664a
Reviewed-on: https://go-review.googlesource.com/c/go/+/441976
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When it calculates the smallest n such that:
n >= i && n % buildInfoAlign == 0
the expression should be
(i+buildInfoAlign-1)&^(buildInfoAlign-1)
instead of
(i+buildInfoAlign-1)&^buildInfoAlign
Fixes#54968.
Change-Id: Ibb7bdf568a521545b2609acc85e2ab4e05da5dae
GitHub-Last-Rev: 479ebc140a
GitHub-Pull-Request: golang/go#54971
Reviewed-on: https://go-review.googlesource.com/c/go/+/429815
Reviewed-by: Ian Lance Taylor <iant@google.com>
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No test case because the problem can only happen for invalid data. Let
the fuzzer find cases like this.
Fixes#55948
Change-Id: I7ba40ba928d2a14d4ac5b39f966173f3868d4729
Reviewed-on: https://go-review.googlesource.com/c/go/+/436876
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The suffix should be 34 not 28. I misread the name because the
reloc listed before these two in the ABI is named "R_PC64_PCREL28".
Updates #54345
Change-Id: Ie8238f55e441c787d70ead58e0a177c650f8b89e
Reviewed-on: https://go-review.googlesource.com/c/go/+/435415
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An SHT_NOBITS section contains no bytes and occupies no space in the
file. This change makes it return an error on reading from this section
so that it will force the caller to check for an SHT_NNOBITS section.
We have considered another option to return "nil, nil" for the Data
method. It's abandoned because it might lead a program to simply do
the wrong thing, thinking that the section is empty.
Please note that it breaks programs which expect a byte slice with the
length described by the sh_size field. There are two reasons to
introduce this breaking change: 1. SHT_NOBITS means no data and it's
unnecessary to allocate memory for it; 2. it could result in an OOM if
the file is corrupted and has a huge sh_size.
Fixes#54967.
Change-Id: I0c3ed4e097214fe88413d726a89122105ad45d4f
GitHub-Last-Rev: 994c12d9da
GitHub-Pull-Request: golang/go#54994
Reviewed-on: https://go-review.googlesource.com/c/go/+/429601
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The spec https://refspecs.linuxfoundation.org/elf/gabi4+/ch4.eheader.html
states:
1. e_shnum: If the number of sections is greater than or equal to
SHN_LORESERVE (0xff00), this member has the value zero and the actual
number of section header table entries is contained in the sh_size
field of the section header at index 0.
2. e_shstrndx: If the section name string table section index is
greater than or equal to SHN_LORESERVE (0xff00), this member has the
value SHN_XINDEX (0xffff) and the actual index of the section name
string table section is contained in the sh_link field of the section
header at index 0.
This CL makes these changes to support files with >= 0xff00 sections:
1. if shoff > 0 && shnum == 0, read sh_size from the initial section
header entry as shnum.
2. if shstrndx == SHN_XINDEX, read sh_link from the initial section
header entry as shstrndx.
It returns an error if the type of the initial section is not SHT_NULL.
A file with >= 0xff00 sections is too big to include in the repository,
so the test case constructs one on the fly, with some of the sections
zeroed out.
While here, remove the unnecessary use of reflect.DeepEqual in the test.
Fixes#55294.
Change-Id: I15ec43612c7cce6e8decfe4e81da3a5b16de47f7
GitHub-Last-Rev: 797c16480b
GitHub-Pull-Request: golang/go#55295
Reviewed-on: https://go-review.googlesource.com/c/go/+/432255
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No test case because the problem can only happen for invalid data. Let
the fuzzer find cases like this.
Fixes#53529
Change-Id: I318c87795e545fe5a006d16b4d361cd4bf5d502d
Reviewed-on: https://go-review.googlesource.com/c/go/+/434936
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This avoids allocating an overly large slice for corrupt input.
Change the saferio.SliceCap function to take a pointer to the element type,
so that we can handle slices of interface types. This revealed that a
couple of existing calls were actually incorrect, passing the slice type
rather than the element type.
No test case because the problem can only happen for invalid data. Let
the fuzzer find cases like this.
Fixes#55338
Change-Id: I3c1724183cc275d4981379773b0b8faa01a9cbd2
Reviewed-on: https://go-review.googlesource.com/c/go/+/433296
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
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Changes:
1. When e_shstrndx holds the value SHN_UNDEF (0), the file has no section
name string table. In this case, do not try to set section names .
2. e_shstrndx should point to an SHT_STRTAB section. If it does not, returns
an error.
Reference:
https://refspecs.linuxfoundation.org/elf/gabi4+/ch4.eheader.html
Updates #54967.
Change-Id: Ic8f228061d996fd7845dfa630719a1ba12d2bb60
GitHub-Last-Rev: aeb70ca8a0
GitHub-Pull-Request: golang/go#55001
Reviewed-on: https://go-review.googlesource.com/c/go/+/430155
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The PPC64 ELFv2 supplement version 1.5 defines a handful of
new relocation types, similarly some were not added.
Fixes#54345
Change-Id: Id39b29d404298fca4a10ccf1e96b5964dc452c9e
Reviewed-on: https://go-review.googlesource.com/c/go/+/425555
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
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Change-Id: I59db11212758b478248f34c031501a167335348c
Reviewed-on: https://go-review.googlesource.com/c/go/+/428257
Auto-Submit: Ian Lance Taylor <iant@google.com>
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Avoid allocating large amounts of memory for corrupt input.
No test case because the problem can only happen for invalid data.
Let the fuzzer find cases like this.
Fixes#54780
Change-Id: Icdacb16bef7d29ef431da52e6d1da4e883a3e050
Reviewed-on: https://go-review.googlesource.com/c/go/+/427434
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Avoid allocating large amounts of memory for corrupt input.
No test case because the problem can only happen for invalid data.
Let the fuzzer find cases like this.
Change-Id: I2d1745200611f0af06ca58adcc3e2309ad6742d8
Reviewed-on: https://go-review.googlesource.com/c/go/+/425882
Run-TryBot: Dan Kortschak <dan@kortschak.io>
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Change-Id: Iebe31b91c6e81438120f50a8089a8efca3d5339d
Reviewed-on: https://go-review.googlesource.com/c/go/+/426115
Run-TryBot: Dan Kortschak <dan@kortschak.io>
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uint32(sz) != n*uint32(ddSz) can go wrong if
the RHS overflows, so do it in wider precision.
Fixes#54640.
Change-Id: I776563330e46de6cdacd4055f6ff08e7de67797f
Reviewed-on: https://go-review.googlesource.com/c/go/+/425364
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R_PPC64_SECTOFF_LO_DS is defined as reloc 62 on all PPC64 ELF ABIs.
Fixes#53356
Change-Id: I5fabf6be32f3310c5aed47d4d654e05fb7bc9de0
Reviewed-on: https://go-review.googlesource.com/c/go/+/411915
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
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Avoid allocating large amounts of memory for corrupt input.
No test case because the problem can only happen for invalid data.
Let the fuzzer find cases like this.
Change-Id: Ib09d5fea54aabcb6941e541b42689222fba69632
Reviewed-on: https://go-review.googlesource.com/c/go/+/425303
Reviewed-by: David Chase <drchase@google.com>
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No debug/plan9obj test case because the problem can only happen for
invalid data. Let the fuzzer find cases like this.
For #47653Fixes#54585
Change-Id: I8d3e15725b9bc09dd0e6f2750769987021f5e982
Reviewed-on: https://go-review.googlesource.com/c/go/+/425115
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Reviewed-by: Joseph Tsai <joetsai@digital-static.net>
If narch is very large we would allocate a lot of memory for seenArches.
In practice we aren't going to see many different architectures so
don't bother to specify a size for the seenArches map.
No debug/macho test case because the problem can only happen for
invalid data. Let the fuzzer find cases like this.
For #47653
For #52523
Change-Id: I5a3b0e3aa6172ddffd6f44d9ae513c39a00d8764
Reviewed-on: https://go-review.googlesource.com/c/go/+/425114
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Reviewed-by: Joseph Tsai <joetsai@digital-static.net>
Change-Id: Idc1f8b3fb6b4b2fdcc6dade048cc14c53715319f
Reviewed-on: https://go-review.googlesource.com/c/go/+/424197
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Avoid allocating large amounts of memory for corrupt input.
No test case because the problem can only happen for invalid data.
Let the fuzzer find cases like this.
Fixes#52521
Change-Id: I6a046f2e28e1255cf773ce135c5bb2b967ef43e9
Reviewed-on: https://go-review.googlesource.com/c/go/+/414234
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No test case because the problem can only happen for invalid data.
Let the fuzzer find cases like this.
For #47653Fixes#53530
Change-Id: If1cebbbcabb188fec8be30ef043c8c4c935a9564
Reviewed-on: https://go-review.googlesource.com/c/go/+/413995
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Plan 9 a.out was not implemented for debug/buildinfo, which
was causing test failures on Plan 9. This adds an implementation,
and causes the tests to pass.
Fixes#53949
Change-Id: I90a307ef9babf8cf381f8746d731cac2206b234a
Reviewed-on: https://go-review.googlesource.com/c/go/+/418014
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Reviewed-by: Benny Siegert <bsiegert@gmail.com>
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Don't allocate slices that are too large; choose a smaller capacity
and build the slice using append. Use this in debug/macho to avoid
over-allocating if a fat header is incorrect.
No debug/macho test case because the problem can only happen for
invalid data. Let the fuzzer find cases like this.
For #47653Fixes#52523
Change-Id: I372c9cdbdda8626a3225e79d713650beb350ebc7
Reviewed-on: https://go-review.googlesource.com/c/go/+/413874
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For #47653Fixes#53189
Change-Id: If35b968fc53e4c96b18964cfb020cdc003b881bf
Reviewed-on: https://go-review.googlesource.com/c/go/+/412014
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For #47653Fixes#45599Fixes#52522
Change-Id: Id6a80186434080cb0a205978ad7f224252674604
Reviewed-on: https://go-review.googlesource.com/c/go/+/408679
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Broken out of debug/pe. Update debug/pe to use it.
For #47653
Change-Id: Ib3037ee04073e005c4b435d0128b8437a075b00a
Reviewed-on: https://go-review.googlesource.com/c/go/+/408678
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As it can't appear in user package paths.
There is a hack for handling "go:buildid" and "type:*" on windows/386.
Previously, windows/386 requires underscore prefix on external symbols,
but that's only applied for SHOSTOBJ/SUNDEFEXT or cgo export symbols.
"go.buildid" is STEXT, "type.*" is STYPE, thus they are not prefixed
with underscore.
In external linking mode, the external linker can't resolve them as
external symbols. But we are lucky that they have "." in their name,
so the external linker see them as Forwarder RVA exports. See:
- https://docs.microsoft.com/en-us/windows/win32/debug/pe-format#export-address-table
- https://sourceware.org/git/?p=binutils-gdb.git;a=blob;f=ld/pe-dll.c;h=e7b82ba6ffadf74dc1b9ee71dc13d48336941e51;hb=HEAD#l972)
This CL changes "." to ":" in symbols name, so theses symbols can not be
found by external linker anymore. So a hacky way is adding the
underscore prefix for these 2 symbols. I don't have enough knowledge to
verify whether adding the underscore for all STEXT/STYPE symbols are
fine, even if it could be, that would be done in future CL.
Fixes#37762
Change-Id: I92eaaf24c0820926a36e0530fdb07b07af1fcc35
Reviewed-on: https://go-review.googlesource.com/c/go/+/317917
Reviewed-by: Than McIntosh <thanm@google.com>
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64-bit PE is set by the optional header magic number,
not by the machine field.
Fixes#54250
Change-Id: I4d01bc08553780d5470e63f0b17bbd968323e5d1
Reviewed-on: https://go-review.googlesource.com/c/go/+/421394
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Change-Id: I228a23754656b41843573bd4217de4df46c9df36
Reviewed-on: https://go-review.googlesource.com/c/go/+/417954
Run-TryBot: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Jenny Rakoczy <jenny@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Related: https://github.com/MicrosoftDocs/win32/pull/1067
Change-Id: I946253f217a5c616ae4a19be44634000cba5020e
Reviewed-on: https://go-review.googlesource.com/c/go/+/411616
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Touch up the line table reader to ensure that it can detect and reject
an invalid program offset field in the table header.
Fixes#53329.
Change-Id: Ia8d684e909af3aca3014b4a3d0dfd431e3f5a9f0
Reviewed-on: https://go-review.googlesource.com/c/go/+/413814
Run-TryBot: Than McIntosh <thanm@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Excluding vendor and testdata.
CL 384268 already reformatted most, but these slipped past.
The struct in the doc comment in debug/dwarf/type.go
was fixed up by hand to indent the first and last lines as well.
For #51082.
Change-Id: Iad020f83aafd671ff58238fe491907e85923d0c7
Reviewed-on: https://go-review.googlesource.com/c/go/+/407137
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Russ Cox <rsc@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Make some code more simple.
Change-Id: I801adf0dba5f6c515681345c732dbb907f945419
GitHub-Last-Rev: a505146bac
GitHub-Pull-Request: golang/go#49626
Reviewed-on: https://go-review.googlesource.com/c/go/+/364634
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
This patch reworks CL 394534 to fix things so that reading auxiliary
symbol info works properly in a cross-endian mode (running
debug/pe-based tool on a big-endian system). The previous
implementation read in all symbol records using the primary symbol
format, then just used a pointer cast to convert to the auxiliary
format, which doesn't play well if host and target have different
endianness.
Fixes#52079.
Change-Id: I143d94d9313a265f11ca7befd254bdb150698834
Reviewed-on: https://go-review.googlesource.com/c/go/+/397485
Run-TryBot: Than McIntosh <thanm@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
I've made it return 0 following what the other DataStart implementation
do when they do not found the section.
Fixes#52718
Change-Id: I44292fed15bb21b9aba712ad15ed74e0ce231b5a
GitHub-Last-Rev: 081a35ebec
GitHub-Pull-Request: golang/go#52722
Reviewed-on: https://go-review.googlesource.com/c/go/+/404254
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: David Chase <drchase@google.com>
Fix an off-by-one error in COFFSymbolReadSectionDefAux, specifically
the code that tests whether a symbol index is valid.
Fixes#52525.
Change-Id: I1b6e5dacfd99249c694bef5ae606e90fdb2ef521
Reviewed-on: https://go-review.googlesource.com/c/go/+/402156
Run-TryBot: Than McIntosh <thanm@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Dan Kortschak
cui fliter
Zeke Lu
Florian Zenker
Roland Shoemaker
Ian Lance Taylor
Paul E. Murphy
Michael Pratt
Sasha Melentyev
cuiweixie
Tobias Klauser
David Chase
qmuntal
Ori Bernstein
WANG Xuerui
Cuong Manh Le
Meng Zhuo
Guoqi Chen
Than McIntosh
Russ Cox
Ryan Leung
Jorropo