Date: Sun, 03 May 2020 23:11:39 +0000 From: bugzilla-noreply@freebsd.org To: testing@freebsd.org Subject: [Bug 240049] Flakey test case: lib.libc.gen.getmntinfo_test.getmntinfo_test Message-ID: <bug-240049-32464-bWgKBXTU4o@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-240049-32464@https.bugs.freebsd.org/bugzilla/> References: <bug-240049-32464@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=240049 --- Comment #8 from Mateusz Guzik <mjg@FreeBSD.org> --- Is this testcase running in parallel with mount/unmount requests for something else? If not, what's "mount" output while the test is running? It is supposed to be an invariant that the fields tested here are set correctly at mount time, but I see a potential for a race. Prior to my changes the kernel kept overwriting these fields before copyout with expected values. VFS_STATFS(mp, &mp->mnt_stat) called on mount can easily inject transiently "bad" values due to memcpy. Note the rest of the buffer has arbitrary content. If I'm right, the code was already broken prior to my changes but not in a way which could have been detected by this testcase. -- You are receiving this mail because: You are the assignee for the bug.
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