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memmove for overlaping memory #434

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merged 3 commits into from Nov 4, 2023
Merged

memmove for overlaping memory #434

merged 3 commits into from Nov 4, 2023

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tylerjw
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@tylerjw tylerjw commented Nov 3, 2023

Fixes #433

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tylerjw commented Nov 3, 2023

I'm unsure what to do next. I assume some huge CI job needs to run to test this?

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memmove for overlaping memory
dfd0705 
Signed-off-by: Tyler Weaver <maybe@tylerjw.dev>
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I'm unsure what to do next. I assume some huge CI job needs to run to test this?

Well, the commit needs a Signed-off-by line, and I think it would be good to have a test exercising this. But after that, and review, yes, it needs full CI (which one of the maintainers will run).

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tylerjw commented Nov 3, 2023

Is there a way to add testing this with asan (as that is how we found this)?

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Is there a way to add testing this with asan (as that is how we found this)?

Theoretically, https://ci.ros2.org/view/nightly/job/nightly_linux_address_sanitizer/ should catch this. So if there is a test that exercises it, it should show up there.

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tylerjw commented Nov 3, 2023

Added the signed-off-by line.

I'll try to add a test that exercises this.

@tylerjw tylerjw force-pushed the memcpy-param-overlap branch 2 times, most recently from 79acfab to 1df981d Compare November 3, 2023 15:59
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tylerjw commented Nov 3, 2023

I added a test.

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Add test for memcpy to memmove
0bc8bdb 
Signed-off-by: Tyler Weaver <maybe@tylerjw.dev>
@sjahr sjahr mentioned this pull request Nov 3, 2023
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@tylerjw tylerjw mentioned this pull request Nov 3, 2023
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clalancette
clalancette requested changes Nov 3, 2023
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I tested this locally with enabling asan, and it does show the problem. So the test seems good. I left one thing inline that I think we should add a comment to; once that is added I'll run full CI on this.

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Comment about overlapping areas being UB
626b11a 
Signed-off-by: Tyler Weaver <maybe@tylerjw.dev>
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CI:

  • Linux Build Status
  • Linux-aarch64 Build Status
  • Windows Build Status

fujitatomoya
fujitatomoya approved these changes Nov 3, 2023
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lgtm 👍

@clalancette clalancette merged commit 5b99aad into ros2:rolling Nov 4, 2023
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@tylerjw tylerjw deleted the memcpy-param-overlap branch November 6, 2023 16:23
tylerjw added a commit to tylerjw/rcutils that referenced this pull request Nov 6, 2023
@tylerjw
memmove for overlaping memory (ros2#434)
1f6846c 
* memmove for overlaping memory

* Add test for memcpy to memmove

Signed-off-by: Tyler Weaver <maybe@tylerjw.dev>
tylerjw added a commit to tylerjw/rcutils that referenced this pull request Nov 6, 2023
@tylerjw
memmove for overlaping memory (ros2#434)
2d17290 
* memmove for overlaping memory

* Add test for memcpy to memmove

Signed-off-by: Tyler Weaver <maybe@tylerjw.dev>
Signed-off-by: Tyler Weaver <tyler@picknik.ai>
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@Mergifyio backport iron humble

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mergify bot commented Nov 7, 2023 •
edited

backport iron humble

✅ Backports have been created

mergify bot pushed a commit that referenced this pull request Nov 7, 2023
@tylerjw @mergify
memmove for overlaping memory (#434)
8554d82 
* memmove for overlaping memory

* Add test for memcpy to memmove

Signed-off-by: Tyler Weaver <maybe@tylerjw.dev>
(cherry picked from commit 5b99aad)
@mergify mergify bot mentioned this pull request Nov 7, 2023
Merged
mergify bot pushed a commit that referenced this pull request Nov 7, 2023
@tylerjw @mergify
memmove for overlaping memory (#434)
00e76ee 
* memmove for overlaping memory

* Add test for memcpy to memmove

Signed-off-by: Tyler Weaver <maybe@tylerjw.dev>
(cherry picked from commit 5b99aad)
@mergify mergify bot mentioned this pull request Nov 7, 2023
Merged
clalancette pushed a commit that referenced this pull request Nov 8, 2023
@mergify @tylerjw
memmove for overlaping memory (#434) (#437)
bb00bc0 
* memmove for overlaping memory

* Add test for memcpy to memmove

Signed-off-by: Tyler Weaver <maybe@tylerjw.dev>
(cherry picked from commit 5b99aad)

Co-authored-by: Tyler Weaver <maybe@tylerjw.dev>
clalancette pushed a commit that referenced this pull request Nov 8, 2023
@mergify @tylerjw
memmove for overlaping memory (#434) (#436)
f37f4e6 
* memmove for overlaping memory

* Add test for memcpy to memmove

Signed-off-by: Tyler Weaver <maybe@tylerjw.dev>
(cherry picked from commit 5b99aad)

Co-authored-by: Tyler Weaver <maybe@tylerjw.dev>
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@clalancette clalancette clalancette approved these changes

@fujitatomoya fujitatomoya fujitatomoya approved these changes

@ahcorde ahcorde Awaiting requested review from ahcorde ahcorde is a code owner

@wjwwood wjwwood Awaiting requested review from wjwwood wjwwood is a code owner

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UB: memcpy with overlapping memory in rcutils_array_list_remove when destroying child logger during tear down
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