Messages in this thread | | | Date | Sat, 11 Jan 2014 09:12:09 -0500 | From | Wakko Warner <> | Subject | Re: [V9fs-developer] Unable to load modules from 9p filesystem with kmod 16 |
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Dominique Martinet wrote: > Hi,
Hi.
The following was trimmed.
> > On 01/10/2014 03:03 PM, Wakko Warner wrote: > > > Wakko Warner wrote: > > >> Kernel 3.12.7 from kernel.org > > >> With kmod-16, I'm unable to load any modules on my guest kvm machines.
> > >> open("/lib/modules/3.12.7/kernel/crypto/af_alg.ko", O_RDONLY|O_CLOEXEC) = 3 > > >> fstat(3, {st_mode=S_IFREG|0644, st_size=13822, ...}) = 0 > > >> mmap(NULL, 13822, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f199aebd000 > > >> syscall_313(0x3, 0x7f199aaa2de0, 0, 0x3, 0, 0x7f199b7b2010, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) = -1 (errno 8) > > >> munmap(0x7f199aebd000, 13822) = 0 > > >> close(3) = 0 > > I didn't look at the patch very closely because the mail apparently > never reached v9fs-developer (although it looks in copy), but I got > pointed out this patch recently: > http://www.spinics.net/lists/linux-virtualization/msg21716.html
I applied the patch on that page. Here's my result:
# df -T /lib/modules/3.12.7/kernel Filesystem Type 1K-blocks Used Available Use% Mounted on kernel 9p 2015056 721356 1172460 39% /kernel # uname -r 3.12.7 # modprobe -V kmod version 16 # lsmod Module Size Used by nfsd 217278 2 auth_rpcgss 41307 1 nfsd oid_registry 2179 1 auth_rpcgss exportfs 3499 1 nfsd nfs 111109 0 ...
> Which quotes "This patch enables 9p-virtio to correctly handle this > case. This not only enables us to load Linux kernel modules off virtfs," > > Perhaps would it be what you need to support this syscall_313?
Looks like that's the fix.
-- Microsoft has beaten Volkswagen's world record. Volkswagen only created 22 million bugs.
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