OpenWrt/LEDE Project

  • Status Unconfirmed
  • Percent Complete
  • Task Type Bug Report
  • Category Base system
  • Assigned To No-one
  • Operating System All
  • Severity Medium
  • Priority Very Low
  • Reported Version Trunk
  • Due in Version Undecided
  • Due Date Undecided
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Attached to Project: OpenWrt/LEDE Project
Opened by Alban Bedel - 25.11.2018

FS#1970 - libubox: Parsing empty blob messages return an error

Since commit c83a84afbef (fix segfault when passed blobmsg attr is NULL) parsing an empty message, like when “{}” is passed as argument to `ubus call`, return an error, it was working just fine before this commit.

This mean that ubus methods with only optional arguments need to check that blob_len() doesn’t return 0, which is annoying and might break various existing programs. At the very least blobmsg_parse() shouldn’t error out when the blob length is 0, but it might also make sense to accept a NULL message as well, just don’t segfault.


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