Re: [PATCH] Fix oops in NFS

[Matthew Wilcox]

On Fri, Jan 05, 2024 at 10:12:55AM +0000, David Howells wrote:
> Matthew Wilcox <willy@xxxxxxxxxxxxx> wrote:
> 
> > This commit (100ccd18bb41 in linux-next 20240104) is bad for me.  After
> > it, running xfstests gives me first a bunch of errors along these lines:
> > 
> > 00004 depmod: ERROR: failed to load symbols from /lib/modules/6.7.0-rc7-00037-g100ccd18bb41/kernel/fs/gfs2/gfs2.ko: Exec format error
> > 00004 depmod: ERROR: failed to load symbols from /lib/modules/6.7.0-rc7-00037-g100ccd18bb41/kernel/fs/zonefs/zonefs.ko: Exec format error
> > 00004 depmod: ERROR: failed to load symbols from /lib/modules/6.7.0-rc7-00037-g100ccd18bb41/kernel/security/keys/encrypted-keys/encrypted-keys.ko: Exec format error
> > 
> > and then later:
> > 
> > 00016 generic/001       run fstests generic/001 at 2024-01-05 04:50:46
> > 00017 [not run] this test requires a valid $TEST_DEV
> > 00017 generic/002       run fstests generic/002 at 2024-01-05 04:50:46
> > 00017 [not run] this test requires a valid $TEST_DEV
> > 00017 generic/003       run fstests generic/003 at 2024-01-05 04:50:47
> > 00018 [not run] this test requires a valid $SCRATCH_DEV
> > ...
> > 
> > so I think that's page cache corruption of some kind.
> 
> Is that being run on NFS?  Is /lib on NFS?

No NFS involvement; this is supposed to be an XFS test ...

/dev/sda on / type ext4 (rw,relatime)
host on /host type 9p (rw,relatime,access=client,trans=virtio)
/dev/sdb on /mnt/test type xfs (rw,relatime,attr2,inode64,logbufs=8,logbsize=32k,noquota)

CONFIG_NETFS_SUPPORT=y
# CONFIG_NETFS_STATS is not set
# CONFIG_FSCACHE is not set
CONFIG_NETWORK_FILESYSTEMS=y
# CONFIG_NFS_FS is not set
# CONFIG_NFSD is not set
# CONFIG_CEPH_FS is not set
# CONFIG_CIFS is not set
# CONFIG_SMB_SERVER is not set
# CONFIG_CODA_FS is not set
# CONFIG_AFS_FS is not set
CONFIG_9P_FS=y
# CONFIG_9P_FS_POSIX_ACL is not set
# CONFIG_9P_FS_SECURITY is not set
CONFIG_NLS=y