Date: Fri, 22 Oct 2021 11:33:22 -0400 From: mike tancsa <mike@sentex.net> To: Mark Johnston <markj@freebsd.org> Cc: FreeBSD-STABLE Mailing List <freebsd-stable@freebsd.org> Subject: Re: ufs_dirbad: /mnt: bad dir ino 50626 at offset 0: mangled entry Message-ID: <999f86c8-e538-7192-f735-6c7185af6184@sentex.net> In-Reply-To: <YXLXAqgQCgY75paI@nuc> References: <9bd8a15d-4800-ee21-2c4b-27c316467f87@sentex.net> <YXLXAqgQCgY75paI@nuc>
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On 10/22/2021 11:21 AM, Mark Johnston wrote: > On Fri, Oct 22, 2021 at 10:36:01AM -0400, mike tancsa wrote: >> After cycles of this, unmounts, mounts etc, I get >> >> >> panic: ufs_dirbad: /mnt: bad dir ino 50626 at offset 0: mangled entry >> cpuid = 1 >> time = 1634912598 >> KDB: stack backtrace: >> #0 0xffffffff80c77035 at kdb_backtrace+0x65 >> #1 0xffffffff80c28a47 at vpanic+0x187 >> #2 0xffffffff80c288b3 at panic+0x43 >> #3 0xffffffff80f345f7 at ufs_lookup_ino+0xdc7 >> #4 0xffffffff80ceae1d at vfs_cache_lookup+0xad >> #5 0xffffffff80cf872c at lookup+0x46c >> #6 0xffffffff80cf785c at namei+0x26c >> #7 0xffffffff80d1c979 at vn_open_cred+0x509 >> #8 0xffffffff80d12a3e at kern_openat+0x26e >> #9 0xffffffff810b4d3c at amd64_syscall+0x10c >> #10 0xffffffff8108bdab at fast_syscall_common+0xf8 >> Uptime: 4m48s >> >> I forced an fsck on reboot, and the file system is clean. I also deleted >> /mnt and recreated the directory and still get this issue. Any idea >> what might be causing it or how I can better track it down ? > Is the VM image stored on ZFS? Which kernel revision is the host running? Hi, The VM is in an Ubuntu host / KVM (Linux ubuntu1 5.11.0-38-generic #42-Ubuntu SMP Fri Sep 24 ) with the VM image stored on its local zfs file system. Do you think its some strange interaction with the hypervisor ? The FreeBSD guest VM is RELENG_13 as of this morning, GENERIC kernel stable/13-d8359af5b ---Mike
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