[Bug 297512] kern.proc.env sysctl fails with ENOMEM when last env string is near the end of the stack mapping; breaks ConsoleKit2 session lookup and GNOME screen unlock

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=297512

--- Comment #5 from [email protected] ---
A commit in branch main references this bug:

URL:
https://cgit.FreeBSD.org/src/commit/?id=1a71d24ecd0dbaf61fd2a44166e9be07c328b198

commit 1a71d24ecd0dbaf61fd2a44166e9be07c328b198
Author:     Konstantin Belousov <[email protected]>
AuthorDate: 2026-08-14 05:46:07 +0000
Commit:     Konstantin Belousov <[email protected]>
CommitDate: 2026-08-14 14:35:38 +0000

    kern/sys_process.c: make vmspace_rwmem() similar to io functions

    In particular, if there were any bytes moved, and then vm_fault()
    faulted, do not return an error, but report the short io instead.

    PR:     297512
    Reviewed by:    markj
    Tested by:      Stéphane D'Alu <[email protected]>
    Sponsored by:   The FreeBSD Foundation
    MFC after:      1 week
    Differential revision:  https://reviews.freebsd.org/D58838

 sys/kern/sys_process.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

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