Date: Sun, 24 Nov 2019 11:39:09 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 241710] please increase ARG_MAX Message-ID: <bug-241710-227-OtYvzEWIiz@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-241710-227@https.bugs.freebsd.org/bugzilla/> References: <bug-241710-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=241710 --- Comment #23 from Konstantin Belousov <kib@FreeBSD.org> --- (In reply to Thierry Thomas from comment #22) Strings are copied to the KVA allocated from submap which is sized at boot. If the size of individual allocation can be changed at runtime it could result both in over-provisioning of the submap and in fragmentation. Both of the problems might cause execve(2) hang waiting for free KVA to proceed. We might allow a tunable to size the maxargs and correspondingly size submap at boot. But this still makes the changes to the kernel map, which are now on user. I just doubt that user can do any reasonable choice there, it requires understanding too much of the kernel layout even to guess what is safe. -- You are receiving this mail because: You are the assignee for the bug.
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