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Fix undeclared __interceptor_malloc in esan_interceptors.cc
Fix undeclared strnlen on OSX
Differential Revision: https://reviews.llvm.org/D31457
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@302781 91177308-0d34-0410-b5e6-96231b3b80d8
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{M, T, E}San have fread and fwrite interceptors, let's move them to sanitizer_common to enable ASan checks as well.
Differential Revision: https://reviews.llvm.org/D31456
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@299061 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary: Increase early allocation buffer size.
Reviewers: bruening
Subscribers: kubabrecka
Differential Revision: https://reviews.llvm.org/D25380
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@283598 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
Handles early allocation from dlsym by allocating memory from a local
static buffer.
Reviewers: bruening
Subscribers: kubabrecka
Differential Revision: https://reviews.llvm.org/D25193
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@283139 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
Adds interception of sigprocmask and pthread_sigmask to esan so that the
working set tool can prevent SIGSEGV from being blocked. A blocked SIGSEGV
results in crashes due to our lazy shadow page allocation scheme.
Adds new sanitizer helper functions internal_sigemptyset and
internal_sigismember.
Adds a test to workingset-signal-posix.cpp.
Reviewers: aizatsky
Subscribers: vitalybuka, zhaoqin, kcc, eugenis, llvm-commits, kubabrecka
Differential Revision: http://reviews.llvm.org/D22063
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@274672 91177308-0d34-0410-b5e6-96231b3b80d8
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Fixes another interceptor issue where an app with a static tcmalloc
library that prevents our early-calloc handling from triggering yet
does not have a static mmap crashes in our mmap interceptor. The
solution is to call internal_mmap when REAL(mmap) is not yet set up.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@272870 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
Adds a version of sigaction that uses a raw system call, to avoid circular
dependencies and support calling sigaction prior to setting up
interceptors. The new sigaction relies on an assembly sigreturn routine
for its restorer, which is Linux x86_64-only for now.
Uses the new sigaction to initialize the working set tool's shadow fault
handler prior to libc interceptor being set up. This is required to
support instrumentation invoked during interceptor setup, which happens
with an instrumented tcmalloc or other allocator compiled with esan.
Adds a test that emulates an instrumented allocator.
Reviewers: aizatsky
Subscribers: vitalybuka, tberghammer, zhaoqin, danalbert, kcc, srhines, eugenis, llvm-commits, kubabrecka
Differential Revision: http://reviews.llvm.org/D21083
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@272676 91177308-0d34-0410-b5e6-96231b3b80d8
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been broken since this landed.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@272659 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
Adds a version of sigaction that uses a raw system call, to avoid circular
dependencies and support calling sigaction prior to setting up
interceptors. The new sigaction relies on an assembly sigreturn routine
for its restorer, which is Linux x86_64-only for now.
Uses the new sigaction to initialize the working set tool's shadow fault
handler prior to libc interceptor being set up. This is required to
support instrumentation invoked during interceptor setup, which happens
with an instrumented tcmalloc or other allocator compiled with esan.
Adds a test that emulates an instrumented allocator.
Reviewers: aizatsky
Subscribers: vitalybuka, tberghammer, zhaoqin, danalbert, kcc, srhines, eugenis, llvm-commits, kubabrecka
Differential Revision: http://reviews.llvm.org/D21083
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@272591 91177308-0d34-0410-b5e6-96231b3b80d8
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This reverts commit r272553.
The iOS build fails to link.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@272557 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
Adds a version of sigaction that uses a raw system call, to avoid circular
dependencies and support calling sigaction prior to setting up
interceptors. The new sigaction relies on an assembly sigreturn routine
for its restorer, which is Linux x86_64-only for now.
Uses the new sigaction to initialize the working set tool's shadow fault
handler prior to libc interceptor being set up. This is required to
support instrumentation invoked during interceptor setup, which happens
with an instrumented tcmalloc or other allocator compiled with esan.
Adds a test that emulates an instrumented allocator.
Reviewers: aizatsky
Subscribers: vitalybuka, tberghammer, zhaoqin, danalbert, kcc, srhines, eugenis, llvm-commits, kubabrecka
Differential Revision: http://reviews.llvm.org/D21083
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@272553 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
When tcmalloc initializes before esan, esan's initialization ends up
calling back into tcmalloc due to the calloc done by dlsym. This results
in a deadlock. We avoid this by special-casing this single allocation.
Intercepting calloc also gives us the opportunity to act on its zeroing as
stores by the application.
Reviewers: aizatsky
Subscribers: vitalybuka, zhaoqin, kcc, eugenis, llvm-commits, kubabrecka
Differential Revision: http://reviews.llvm.org/D21086
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@272076 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
Adds initialization of esan's runtime library during any early interceptors
that are sometimes called prior to the official __esan_init() invocation
(we see this with apps using tcmalloc).
Adds handling of interceptors called during interceptor initialization.
Reviewers: aizatsky
Subscribers: vitalybuka, zhaoqin, kcc, eugenis, llvm-commits, kubabrecka
Differential Revision: http://reviews.llvm.org/D20976
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@271744 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
Implements real_sigaction() which it turns out is required for
internal_sigaction() to bypass the libc interceptors.
Without real_sigaction(), our internal_sigaction() calls during init happen
to work due to the EsanDuringInit check in COMMON_INTERCEPTOR_ENTER (though
even here it does not feel right for an "internal_" call to go through the
interceptor). The real problem is when we call internal_sigaction() after
we're initialized, which only happens on an unhandled SIGSEGV for which the
app has no handler: then we'll spin in an infinite loop as our attempts to
remove our own handler repeatedly fail. It's not easy to add a test for
that, unfortunately.
Reviewers: aizatsky
Subscribers: vitalybuka, zhaoqin, kcc, eugenis, llvm-commits, kubabrecka
Differential Revision: http://reviews.llvm.org/D20832
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@271626 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
In preparation for fault-based shadow memory iteration, we add support for
our own signal handler by adding app signal handler interception as well as
chaining for SIGSEGV. This is done in a simple manner: we do not honor the
app's alternate stack nor any sigaction flags for SIGSEGV.
Adds a new test of transparency in app signal handling.
Reviewers: aizatsky
Subscribers: filcab, kubabrecka, vitalybuka, zhaoqin, kcc, eugenis, llvm-commits
Differential Revision: http://reviews.llvm.org/D20577
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@271272 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
Adds detection of large stack size rlimits (over 1 TB or unlimited), which
results in an mmap location that our shadow mapping does not support. We
re-exec the application in this situation. Adds a test of this behavior.
Adds general detection of mmap regions outside of our app regions. In the
future we want to try to adaptively handle these but for now we abort.
Moves the existing Linux-specific mmap code into a platform-specific file
where the new rlimit code lives.
Reviewers: eugenis
Subscribers: vitalybuka, zhaoqin, kcc, aizatsky, llvm-commits, kubabrecka
Differential Revision: http://reviews.llvm.org/D20745
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@271079 91177308-0d34-0410-b5e6-96231b3b80d8
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Adds *stat to the common interceptors.
Removes the now-duplicate *stat interceptor from msan/tsan/esan.
This adds *stat to asan, which previously did not intercept it.
Patch by Qin Zhao.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@269223 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
Adds shadow memory mapping support common to all tools to the new
Efficiencysanitizer ("esan") family of tools. This includes:
+ Shadow memory layout and mapping support for 64-bit Linux for any
power-of-2 scale-down (1x, 2x, 4x, 8x, 16x, etc.) that ensures that
shadow(shadow(address)) does not overlap shadow or application
memory.
+ Mmap interception to ensure the application does not map on top of
our shadow memory.
+ Init-time sanity checks for shadow regions.
+ A test of the mmap conflict mechanism.
Reviewers: aizatsky, filcab
Subscribers: filcab, kubabrecka, llvm-commits, vitalybuka, eugenis, kcc, zhaoqin
Differential Revision: http://reviews.llvm.org/D19921
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@269198 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
Adds stat/__xstat to the common interceptors.
Removes the now-duplicate stat/__xstat interceptor from msan/tsan/esan.
This adds stat/__xstat to asan, which previously did not intercept it.
Resubmit of http://reviews.llvm.org/D19875 with win build fixes.
Reviewers: aizatsky, eugenis
Subscribers: tberghammer, llvm-commits, danalbert, vitalybuka, bruening, srhines, kubabrecka, kcc
Differential Revision: http://reviews.llvm.org/D19890
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@268466 91177308-0d34-0410-b5e6-96231b3b80d8
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This reverts commit 268440 because it breaks the windows bot.
http://lab.llvm.org:8011/builders/sanitizer-windows/builds/21425/steps/build%20compiler-rt/logs/stdio
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@268448 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
Adds stat/__xstat to the common interceptors.
Removes the now-duplicate stat/__xstat interceptor from msan/tsan/esan.
This adds stat/__xstat to asan, which previously did not intercept it.
Reviewers: aizatsky, eugenis
Subscribers: tberghammer, danalbert, srhines, kubabrecka, llvm-commits, vitalybuka, eugenis, kcc, bruening
Differential Revision: http://reviews.llvm.org/D19875
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@268440 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
Replaces {} with a do..while sequence in esan's empty interceptors to allow
natural use with a trailing semicolon. The sequence uses each argument to
avoid warnings.
Reviewers: filcab
Subscribers: kubabrecka, llvm-commits, zhaoqin
Differential Revision: http://reviews.llvm.org/D19832
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@268426 91177308-0d34-0410-b5e6-96231b3b80d8
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involved.
On linux, some architectures had an ABI transition from 64-bit long double
(ie. same as double) to 128-bit long double. On those, glibc symbols
involving long doubles come in two versions, and we need to pass the
correct one to dlvsym when intercepting them.
A few more functions we intercept are also versioned (all printf, scanf,
strtold variants), but there's no need to fix these, as the REAL() versions
are never called.
Differential Revision: http://reviews.llvm.org/D19555
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@267794 91177308-0d34-0410-b5e6-96231b3b80d8
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The interception context is not used by esan, but the compiler complains
about it being uninitialized all the same. We set it to null to avoid the
warning.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@267376 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
Adds libc interceptors to the runtime library for the new
EfficiencySanitizer ("esan") family of tools. The interceptors cover
the memory operations in most common library calls and will be shared
among all esan tools.
Reviewers: aizatsky
Subscribers: zhaoqin, tberghammer, danalbert, srhines, llvm-commits, vitalybuka, eugenis, kcc
Differential Revision: http://reviews.llvm.org/D19411
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@267293 91177308-0d34-0410-b5e6-96231b3b80d8
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