On Mon, Feb 12, 2024 at 05:16:58PM +0100, Linux regression tracking (Thorsten Leemhuis) wrote: > Hi Greg, Sasha, and David, > > I noticed a regression report in bugzilla.kernel.org that seems to be > specific to the linux-6.6.y series: > > Quoting from https://bugzilla.kernel.org/show_bug.cgi?id=218484 : > > > After upgrading to version 6.6.16, the kernel compilation on a i586 > > arch (on a 32bit chroot in a 64bit host) fails with a message: > > > > virtual memory exhausted: Cannot allocate memory > > > > this happens even lowering the number of parallel compilation > > threads. On a x86_64 arch the same problem doesn't occur. It's not > > clear whether some weird recursion is triggered that exhausts the > > memory, but it seems that the problem is caused by the patchset > > 'minmax' added to the 6.6.16 version, in particular it seems caused > > by these patches: > > > > - minmax-allow-min-max-clamp-if-the-arguments-have-the-same-signedness.patch > > - minmax-fix-indentation-of-__cmp_once-and-__clamp_once.patch > > - minmax-allow-comparisons-of-int-against-unsigned-char-short.patch > > - minmax-relax-check-to-allow-comparison-between-unsigned-arguments-and-signed-constants.patch > > > > Reverting those patches fixes the memory exhaustion problem during compilation. > > The reporter later added: > > > From a quick test the same problem doesn't occur in 6.8-rc4. > See the ticket for more details. > > Note, you have to use bugzilla to reach the reporter, as I sadly[1] can > not CCed them in mails like this. > > [TLDR for the rest of this mail: I'm adding this report to the list of > tracked Linux kernel regressions; the text you find below is based on a > few templates paragraphs you might have encountered already in similar > form.] > > BTW, let me use this mail to also add the report to the list of tracked > regressions to ensure it's doesn't fall through the cracks: > > #regzbot introduced: 204c653d5d0c79940..9487d93f172acef > https://bugzilla.kernel.org/show_bug.cgi?id=218484 > #regzbot title: minmax: virtual memory exhausted in 6.6.16 with i586 chroot > #regzbot ignore-activity > > Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat) > -- > Everything you wanna know about Linux kernel regression tracking: > https://linux-regtracking.leemhuis.info/about/#tldr > If I did something stupid, please tell me, as explained on that page. > > [1] because bugzilla.kernel.org tells users upon registration their > "email address will never be displayed to logged out users" I think this was already fixed in 6.7 or Linus's tree, but I can't seem to find the commit at the moment. What file is causing the compiler to crash? Is it some video or media driver? thanks, greg k-h
