[I'm only claiming the new jemalloc is involved and that reverting avoids the problem.] I've been reporting to some lists problems with: dhclient sendmail rpcbind mountd nfsd getting SIGSEGV (signal 11) crashes and some core dumps on the old 2-socket (1 core per socket) 32-bit PowerMac G4 running head -r360311. Mikaël Urankar sent a note suggesting that I try testing reverting head -r360233 for my head -r360311 context. He got it right . . . Context: The problem was noticed by an inability to have other machines do a: mount -onoatime,soft OLDPOWERMAC-LOCAL-IP:/... /mnt sort of operation and to have succeed. By contrast, on the old PowerMac G4 I could initiate mounts against other machines just fine. I do not see any such problems on any of (all based on head -r360311): powerpc64 (old PowerMac G5 2-sockets with 2 cores each) armv7 (OrangePi+ 2ed) aarch64 (Rock64, RPi4, RPi3, OverDrive 1000, Macchiatobin Double Shot) amd64 (ThreadRipper 1950X) So I expect something 32-bit powerpc specific is somehow involved, even if jemalloc is only using whatever it is. (A kyua run with a debug kernel did not find other unexpected signal 11 sources on the 32-bit PowerMac compared to past kyua runs, at least that I noticed. There were a few lock order reversals that I do not know if they are expected or known-safe or not. I've reported those reversals to the lists as well.) Recent experiments based on the suggestion: Doing the buildworld, buildkernel and installing just the new kernel and rebooting made no difference. But then installing the new world and rebooting did make things work again: I no longer get core files for the likes of (old cores from before the update): # find / -name "*.core" -print /var/spool/clientmqueue/sendmail.core /rpcbind.core /mountd.core /nfsd.core Nor do I see the various notices for sendmail signal 11's that did not leave behind a core file --or for dhclient (no core file left behind). And I can mount the old PowerMac's drive from other machines just fine. Other notes: I do not actively use sendmail but it was left to do its default things, partially to test if such default things are working. Unfortunately, PowerMacs have a problematical status under FreeBSD and my context has my historical experiments with avoiding various problems. === Mark Millard marklmi at yahoo.com ( dsl-only.net went away in early 2018-Mar)Received on Sat May 02 2020 - 23:47:03 UTC
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