[PATCH V2 0/2] nvmet-tcp: fix receive path error handling and state machine

[Maurizio Lombardi]

Patch 1 fixes a potential issue where network data could be read into an
uninitialized iterator. Currently, nvmet_tcp_build_pdu_iovec() returns void,
meaning callers are unaware if an out-of-bounds PDU length or offset triggers
an early return. Consequently, callers blindly overwrite the queue state to
NVMET_TCP_RECV_DATA. This patch modifies the function to return an error code,
shifting the handling responsibility to the callers to ensure proper socket
teardown.

Patch 2 cleans up redundant, localized calls to nvmet_tcp_fatal_error() scattered
across the receive path. It delegates the responsibility of executing the fatal
error function to the top-level caller by bubbling up the error codes.

V2: some cosmetic changes to Patch 1, no functional changes.

Maurizio Lombardi (2):
  nvmet-tcp: propagate nvmet_tcp_build_pdu_iovec() errors to its callers
  nvmet-tcp: remove redundant calls to nvmet_tcp_fatal_error()

 drivers/nvme/target/tcp.c | 73 ++++++++++++++++++---------------------
 1 file changed, 34 insertions(+), 39 deletions(-)

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2.53.0