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Revision tags: llvmorg-18.1.8, llvmorg-18.1.7, llvmorg-18.1.6, llvmorg-18.1.5, llvmorg-18.1.4, llvmorg-18.1.3, llvmorg-18.1.2, llvmorg-18.1.1, llvmorg-18.1.0, llvmorg-18.1.0-rc4, llvmorg-18.1.0-rc3, llvmorg-18.1.0-rc2, llvmorg-18.1.0-rc1, llvmorg-19-init, llvmorg-17.0.6, llvmorg-17.0.5, llvmorg-17.0.4, llvmorg-17.0.3, llvmorg-17.0.2, llvmorg-17.0.1, llvmorg-17.0.0, llvmorg-17.0.0-rc4, llvmorg-17.0.0-rc3, llvmorg-17.0.0-rc2, llvmorg-17.0.0-rc1, llvmorg-18-init, llvmorg-16.0.6, llvmorg-16.0.5, llvmorg-16.0.4, llvmorg-16.0.3, llvmorg-16.0.2, llvmorg-16.0.1, llvmorg-16.0.0, llvmorg-16.0.0-rc4 |
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b27f657f |
| 01-Mar-2023 |
Alex Brachet <abrachet@google.com> |
[GWP-ASan] Stop using type aliases for ::testing:: types
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Revision tags: llvmorg-16.0.0-rc3, llvmorg-16.0.0-rc2, llvmorg-16.0.0-rc1, llvmorg-17-init |
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35b5499d |
| 13-Jan-2023 |
Mitch Phillips <31459023+hctim@users.noreply.github.com> |
Reland: [GWP-ASan] Add recoverable mode.
The GWP-ASan recoverable mode allows a process to continue to function
after a GWP-ASan error is detected. The error will continue to be
dumped, but GWP-ASan
Reland: [GWP-ASan] Add recoverable mode.
The GWP-ASan recoverable mode allows a process to continue to function
after a GWP-ASan error is detected. The error will continue to be
dumped, but GWP-ASan now has APIs that a signal handler (like the
example optional crash handler) can call in order to allow the
continuation of a process.
When an error occurs with an allocation, the slot used for that
allocation will be permanently disabled. This means that free() of that
pointer is a no-op, and use-after-frees will succeed (writing and
reading the data present in the page).
For heap-buffer-overflow/underflow, the guard page is marked as accessible
and buffer-overflows will succeed (writing and reading the data present
in the now-accessible guard page). This does impact adjacent
allocations, buffer-underflow and buffer-overflows from adjacent
allocations will no longer touch an inaccessible guard page. This could
be improved in future by having two guard pages between each adjacent
allocation, but that's out of scope of this patch.
Each allocation only ever has a single error report generated. It's
whatever came first between invalid-free, double-free, use-after-free or
heap-buffer-overflow, but only one.
Reviewed By: eugenis, fmayer
Differential Revision: https://reviews.llvm.org/D140173
show more ...
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| #
7cc12cb6 |
| 12-Jan-2023 |
Mitch Phillips <31459023+hctim@users.noreply.github.com> |
Revert "[GWP-ASan] Add recoverable mode."
This reverts commit 90a9beb7cc9755791caa23dfc4e36bc544e98ed3.
Reason: Broke an internal build.
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Revision tags: llvmorg-15.0.7 |
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90a9beb7 |
| 11-Jan-2023 |
Mitch Phillips <31459023+hctim@users.noreply.github.com> |
[GWP-ASan] Add recoverable mode.
The GWP-ASan recoverable mode allows a process to continue to function
after a GWP-ASan error is detected. The error will continue to be
dumped, but GWP-ASan now has
[GWP-ASan] Add recoverable mode.
The GWP-ASan recoverable mode allows a process to continue to function
after a GWP-ASan error is detected. The error will continue to be
dumped, but GWP-ASan now has APIs that a signal handler (like the
example optional crash handler) can call in order to allow the
continuation of a process.
When an error occurs with an allocation, the slot used for that
allocation will be permanently disabled. This means that free() of that
pointer is a no-op, and use-after-frees will succeed (writing and
reading the data present in the page).
For heap-buffer-overflow/underflow, the guard page is marked as accessible
and buffer-overflows will succeed (writing and reading the data present
in the now-accessible guard page). This does impact adjacent
allocations, buffer-underflow and buffer-overflows from adjacent
allocations will no longer touch an inaccessible guard page. This could
be improved in future by having two guard pages between each adjacent
allocation, but that's out of scope of this patch.
Each allocation only ever has a single error report generated. It's
whatever came first between invalid-free, double-free, use-after-free or
heap-buffer-overflow, but only one.
Reviewed By: eugenis, fmayer
Differential Revision: https://reviews.llvm.org/D140173
show more ...
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Revision tags: llvmorg-15.0.6, llvmorg-15.0.5, llvmorg-15.0.4, llvmorg-15.0.3, working, llvmorg-15.0.2, llvmorg-15.0.1, llvmorg-15.0.0, llvmorg-15.0.0-rc3, llvmorg-15.0.0-rc2, llvmorg-15.0.0-rc1, llvmorg-16-init, llvmorg-14.0.6, llvmorg-14.0.5, llvmorg-14.0.4, llvmorg-14.0.3, llvmorg-14.0.2, llvmorg-14.0.1, llvmorg-14.0.0, llvmorg-14.0.0-rc4, llvmorg-14.0.0-rc3, llvmorg-14.0.0-rc2, llvmorg-14.0.0-rc1, llvmorg-15-init, llvmorg-13.0.1, llvmorg-13.0.1-rc3, llvmorg-13.0.1-rc2, llvmorg-13.0.1-rc1, llvmorg-13.0.0, llvmorg-13.0.0-rc4, llvmorg-13.0.0-rc3, llvmorg-13.0.0-rc2, llvmorg-13.0.0-rc1, llvmorg-14-init, llvmorg-12.0.1, llvmorg-12.0.1-rc4, llvmorg-12.0.1-rc3, llvmorg-12.0.1-rc2, llvmorg-12.0.1-rc1, llvmorg-12.0.0, llvmorg-12.0.0-rc5, llvmorg-12.0.0-rc4, llvmorg-12.0.0-rc3, llvmorg-12.0.0-rc2 |
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| #
3d8823b8 |
| 08-Feb-2021 |
Mitch Phillips <31459023+hctim@users.noreply.github.com> |
[GWP-ASan] Add aligned allocations.
Adds a new allocation API to GWP-ASan that handles size+alignment
restrictions.
Reviewed By: cryptoad, eugenis
Differential Revision: https://reviews.llvm.org/D
[GWP-ASan] Add aligned allocations.
Adds a new allocation API to GWP-ASan that handles size+alignment
restrictions.
Reviewed By: cryptoad, eugenis
Differential Revision: https://reviews.llvm.org/D94830
show more ...
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Revision tags: llvmorg-11.1.0, llvmorg-11.1.0-rc3 |
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| #
0dcf3324 |
| 02-Feb-2021 |
Mitch Phillips <31459023+hctim@users.noreply.github.com> |
Revert "[GWP-ASan] Add aligned allocations."
This reverts commit 9dc06762470cb5a6cde8de5833cb75262e1bacb0.
Should not have been committed, was a bad rebase. Review still
continuing on D94830.
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Revision tags: llvmorg-12.0.0-rc1, llvmorg-13-init, llvmorg-11.1.0-rc2 |
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| #
9dc06762 |
| 14-Jan-2021 |
Mitch Phillips <31459023+hctim@users.noreply.github.com> |
[GWP-ASan] Add aligned allocations.
Adds a new allocation API to GWP-ASan that handles size+alignment
restrictions.
Differential Revision: https://reviews.llvm.org/D94830
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Revision tags: llvmorg-11.1.0-rc1, llvmorg-11.0.1, llvmorg-11.0.1-rc2, llvmorg-11.0.1-rc1 |
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| #
5556616b |
| 16-Nov-2020 |
Kostya Kortchinsky <kostyak@google.com> |
[GWP-ASan] Port tests to Fuchsia
This modifies the tests so that they can be run on Fuchsia:
- add the necessary includes for `set`/`vector` etc
- do the few modifications required to use zxtest ins
[GWP-ASan] Port tests to Fuchsia
This modifies the tests so that they can be run on Fuchsia:
- add the necessary includes for `set`/`vector` etc
- do the few modifications required to use zxtest instead og gtest
`backtrace.cpp` requires stacktrace support that Fuchsia doesn't have
yet, and `enable_disable.cpp` currently uses `fork()` which Fuchsia
doesn't support yet. I'll revisit this later.
I chose to use `harness.h` to hold my "platform-specific" include and
namespace, and using this header in tests rather than `gtest.h`,
which I am open to change if someone would rather go another direction.
Differential Revision: https://reviews.llvm.org/D91575
show more ...
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Revision tags: llvmorg-11.0.0, llvmorg-11.0.0-rc6, llvmorg-11.0.0-rc5, llvmorg-11.0.0-rc4, llvmorg-11.0.0-rc3, llvmorg-11.0.0-rc2, llvmorg-11.0.0-rc1, llvmorg-12-init, llvmorg-10.0.1, llvmorg-10.0.1-rc4, llvmorg-10.0.1-rc3, llvmorg-10.0.1-rc2, llvmorg-10.0.1-rc1, llvmorg-10.0.0, llvmorg-10.0.0-rc6, llvmorg-10.0.0-rc5, llvmorg-10.0.0-rc4, llvmorg-10.0.0-rc3, llvmorg-10.0.0-rc2 |
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| #
0bfc4890 |
| 06-Feb-2020 |
Mitch Phillips <31459023+hctim@users.noreply.github.com> |
[GWP-ASan] Fix unused variables from crash handler + clang-format
Summary: NFC - See title
Reviewers: eugenis
Reviewed By: eugenis
Subscribers: merge_guards_bot, #sanitizers, llvm-commits
Tags:
[GWP-ASan] Fix unused variables from crash handler + clang-format
Summary: NFC - See title
Reviewers: eugenis
Reviewed By: eugenis
Subscribers: merge_guards_bot, #sanitizers, llvm-commits
Tags: #sanitizers, #llvm
Differential Revision: https://reviews.llvm.org/D74100
show more ...
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0c3b2986 |
| 06-Feb-2020 |
Mitch Phillips <31459023+hctim@users.noreply.github.com> |
[GWP-ASan] Change crash handler constant.
Constant is too large to fit into uintptr_t on 32-bit.
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| #
a6258684 |
| 05-Feb-2020 |
Mitch Phillips <31459023+hctim@users.noreply.github.com> |
[GWP-ASan] Crash Handler API.
Summary:
Forewarning: This patch looks big in #LOC changed. I promise it's not that bad, it just moves a lot of content from one file to another. I've gone ahead and le
[GWP-ASan] Crash Handler API.
Summary:
Forewarning: This patch looks big in #LOC changed. I promise it's not that bad, it just moves a lot of content from one file to another. I've gone ahead and left inline comments on Phabricator for sections where this has happened.
This patch:
1. Introduces the crash handler API (crash_handler_api.h).
2. Moves information required for out-of-process crash handling into an AllocatorState. This is a trivially-copied POD struct that designed to be recovered from a deceased process, and used by the crash handler to create a GWP-ASan report (along with the other trivially-copied Metadata struct).
3. Implements the crash handler API using the AllocatorState and Metadata.
4. Adds tests for the crash handler.
5. Reimplements the (now optionally linked by the supporting allocator) in-process crash handler (i.e. the segv handler) using the new crash handler API.
6. Minor updates Scudo & Scudo Standalone to fix compatibility.
7. Changed capitalisation of errors (e.g. /s/Use after free/Use After Free).
Reviewers: cryptoad, eugenis, jfb
Reviewed By: eugenis
Subscribers: merge_guards_bot, pcc, jfb, dexonsmith, mgorny, cryptoad, #sanitizers, llvm-commits
Tags: #sanitizers, #llvm
Differential Revision: https://reviews.llvm.org/D73557
show more ...
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