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| author | J. Bruce Fields <bfields@redhat.com> | 2012-08-20 22:04:40 +0200 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2012-08-21 00:38:59 +0200 |
| commit | f06f00a24d76e168ecb38d352126fd203937b601 (patch) | |
| tree | 14dc65ebb5dc175f68a099f0aaf36b447e1fdcd8 /fs/locks.c | |
| parent | svcrpc: fix BUG() in svc_tcp_clear_pages (diff) | |
| download | linux-f06f00a24d76e168ecb38d352126fd203937b601.tar.xz linux-f06f00a24d76e168ecb38d352126fd203937b601.zip | |
svcrpc: sends on closed socket should stop immediately
svc_tcp_sendto sets XPT_CLOSE if we fail to transmit the entire reply.
However, the XPT_CLOSE won't be acted on immediately. Meanwhile other
threads could send further replies before the socket is really shut
down. This can manifest as data corruption: for example, if a truncated
read reply is followed by another rpc reply, that second reply will look
to the client like further read data.
Symptoms were data corruption preceded by svc_tcp_sendto logging
something like
kernel: rpc-srv/tcp: nfsd: sent only 963696 when sending 1048708 bytes - shutting down socket
Cc: stable@vger.kernel.org
Reported-by: Malahal Naineni <malahal@us.ibm.com>
Tested-by: Malahal Naineni <malahal@us.ibm.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/locks.c')
0 files changed, 0 insertions, 0 deletions