https://bugs.exim.org/show_bug.cgi?id=2130
Bug ID: 2130
Summary: Transport pipe reads too small for response object
Product: Exim
Version: 4.88
Hardware: All
OS: FreeBSD
Status: NEW
Severity: bug
Priority: medium
Component: Transports
Assignee: nigel@???
Reporter: jgh146exb@???
CC: axel.rau@???, exim-dev@???
Reported against FreeBSD; likely to occur on any minimal Posix.1-2001
PIPE_BUF implementation.
Error message:
failed to read pipe from transport process 28932 for transport smtp: required
size=2680 > remaining size=329 and unfinished=false
Code location: src/deliver.c about line 3250. Comment:
Each separate item is written to the pipe in a single write(), and as they are
all short items, the writes will all be atomic and we should never find
ourselves in the position of having read an incomplete item. "Short" in this
case can mean up to about 1K in the case when there is a long error message
associated with an address.
- vs. PIPE_BUF of 512, and response element in kilobytes (eg. the TLS peer
certificate.
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