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| author |   Chuck Lever <chuck.lever@oracle.com> | 2022-09-01 15:09:59 -0400 |
|---|---|---|
| committer | Chuck Lever <chuck.lever@oracle.com> | 2022-09-26 14:02:26 -0400 |
| commit | 1242a87da0d8cd2a428e96ca68e7ea899b0f4624 (patch) | |
| tree | 0b6ec5907606e0c5607c204e47658c62838ff275 /samples/git:/ssh:/git@git.zx2c4.com | |
| parent | SUNRPC: Fix svcxdr_init_decode's end-of-buffer calculation (diff) | |
| download | linux-dev-1242a87da0d8cd2a428e96ca68e7ea899b0f4624.tar.xz linux-dev-1242a87da0d8cd2a428e96ca68e7ea899b0f4624.zip | |
SUNRPC: Fix svcxdr_init_encode's buflen calculation
Commit 2825a7f90753 ("nfsd4: allow encoding across page boundaries")
added an explicit computation of the remaining length in the rq_res
XDR buffer.
The computation appears to suffer from an "off-by-one" bug. Because
buflen is too large by one page, XDR encoding can run off the end of
the send buffer by eventually trying to use the struct page address
in rq_page_end, which always contains NULL.
Fixes: bddfdbcddbe2 ("NFSD: Extract the svcxdr_init_encode() helper")
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Diffstat (limited to 'samples/git:/ssh:/git@git.zx2c4.com')
0 files changed, 0 insertions, 0 deletions