While looking into the filecache CPU soft lock-up issue, I ran
across this problem. I thought I could run it down in just an
afternoon (I was wrong) and that this problem probably affects more
users than the soft lock-up (jury's still out).
Anyway, NFSD's new READDIRPLUS dirent encoder blows past the end of
the directory payload xdr_stream when the client requests more than
a page worth of directory entries. I tracked this down to how
xdr_get_next_encode_buffer() computes xdr->end. First patch in this
series is the fix. The remaining patches are clean-ups and
optimizations.
I want to get this into 5.19-rc quickly. I would appreciate getting
at least two R-b's for this series.
---
Chuck Lever (5):
SUNRPC: Fix the calculation of xdr->end in xdr_get_next_encode_buffer()
SUNRPC: Optimize xdr_reserve_space()
SUNRPC: Clean up xdr_commit_encode()
SUNRPC: Clean up xdr_get_next_encode_buffer()
SUNRPC: Remove pointer type casts from xdr_get_next_encode_buffer()
net/sunrpc/xdr.c | 31 ++++++++++++++++++++++---------
1 file changed, 22 insertions(+), 9 deletions(-)
--
Chuck Lever
