** Description changed:
[Impact]
- While debugging bug 1910277, I found that the test compilation will print
some warnings:
- memfd_test.c:64:7: warning: implicit declaration of function ‘open’;
- memfd_test.c:90:6: warning: implicit declaration of function ‘fcntl’
- memfd_test.c:397:6: warning: implicit declaration of function ‘fallocate’;
- fuse_test.c:67:6: warning: implicit declaration of function ‘fcntl’
- fuse_test.c:261:7: warning: implicit declaration of function ‘open’;
+ While debugging bug 1910277, I found that the test compilation will
+ print some warnings on F/G:
+ memfd_test.c:64:7: warning: implicit declaration of function ‘open’;
+ memfd_test.c:90:6: warning: implicit declaration of function ‘fcntl’
+ memfd_test.c:397:6: warning: implicit declaration of function ‘fallocate’;
+ fuse_test.c:67:6: warning: implicit declaration of function ‘fcntl’
+ fuse_test.c:261:7: warning: implicit declaration of function ‘open’;
- And there is a fix in upstream for this.
+ It's harmless but fixing this we can make the test report easier to
+ read.
[Fix]
* 1c49e3783f8899 ("selftests/memfd: Fix implicit declaration warnings")
This fix can be cherry-picked into F/G and compiled without any problem.
- Older kernel does not have this issue.
+ Older kernel does not have this issue since they're missing some other
+ commits.
[Test Case]
Build the memfd test in kselftests with:
- sudo make TARGETS=memfd
+ sudo make TARGETS=memfd
With this fix, these warnings will be gone.
[Where problems could occur]
- This fix is just for fixing the test case compilation, so it's not affecting
real kernel functionality. If we need to fix it on older release X/B, this
patch will cause compilation errors as they're missing some other vital
commits, I think it's fine to ignore them for now.
+ This fix is just for fixing the test case compilation, so it's not
+ affecting real kernel functionality.
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https://bugs.launchpad.net/bugs/1910323
Title:
Fix implicit declaration warnings for kselftests/memfd test on newer
releases
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