Created attachment 216717 [details] that single space patch With some popular multiplayer games (such as Counter-Strike: Global Offensive) the Linux Steam client likes to occasionally scan the game process memory, presumably as part anti-cheat measures. Turns out the client also expects each inode entry to be followed by a space character, otherwise the parsing code crashes. The other related issue is that mapping information often doesn't fit into the pseudofs (?) 128 Kib limit, which results in a truncated map file. That occasionally leads to a Steam crash as well (depends on the exact truncation point).
A commit references this bug: Author: trasz Date: Thu Oct 15 12:48:31 UTC 2020 New revision: 366722 URL: https://svnweb.freebsd.org/changeset/base/366722 Log: With some popular multiplayer games (such as Counter-Strike: Global Offensive) the Linux Steam client likes to occasionally scan the game process memory, presumably as part anti-cheat measures. Turns out the client also expects each inode entry to be followed by a space character, otherwise the parsing code crashes. PR: 248216 Submitted by: Alex S <iwtcex@gmail.com> MFC after: 2 weeks Changes: head/sys/compat/linprocfs/linprocfs.c
(See also https://reviews.freebsd.org/D20575)
(In reply to Edward Tomasz Napierala from comment #2) I think it could be closed as fixed, ok?
This issue is definitely fully addressed.