Alexey Serbin has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/22977 )

Change subject: [arm64] Fix SIGBUS errors for atomic operations
......................................................................


Patch Set 1:

(1 comment)

http://gerrit.cloudera.org:8080/#/c/22977/1/src/kudu/tablet/concurrent_btree.h
File src/kudu/tablet/concurrent_btree.h:

http://gerrit.cloudera.org:8080/#/c/22977/1/src/kudu/tablet/concurrent_btree.h@461
PS1, Line 461:   alignas(8) AtomicVersionValue versionPlaceholder_;
> Thank you for your reply. I used GDB to capture the stack information of a
Thanks a lot for the details, KeDeng!

Zoltan, did you have a chance to reproduce the issue if compiling Kudu with 
CLANG18?

I guess we need to add a note on this into the release notes of 1.18.0 release. 
 I'd think of adding a note that ARM bits compiled with default CLANG18 flags 
might lead to a SIGBUG like described.  Alternatively, I'd think of 
pin-pointing the exact combination of extra flags for CLANG18 to make the 
results bits working like bits built with GCC/G++ (say, GCC11), and then adding 
those flags into the top-level CMakeLists.txt for aarch64 platforms.

What do you think?



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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I6f8ea46308f942ded97d93d27ae466fd13a31b53
Gerrit-Change-Number: 22977
Gerrit-PatchSet: 1
Gerrit-Owner: KeDeng <[email protected]>
Gerrit-Reviewer: Alexey Serbin <[email protected]>
Gerrit-Reviewer: KeDeng <[email protected]>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Reviewer: Marton Greber <[email protected]>
Gerrit-Reviewer: Zoltan Martonka <[email protected]>
Gerrit-Comment-Date: Tue, 17 Jun 2025 05:02:37 +0000
Gerrit-HasComments: Yes

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