Date: Mon, 15 Feb 2021 18:38:09 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 253511] vm.pmap.pg_ps_enabled=0 and kern.elf64.aslr.enable=1 panics with integer divide by zero Message-ID: <bug-253511-227-bfLJMYA0Nr@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-253511-227@https.bugs.freebsd.org/bugzilla/> References: <bug-253511-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D253511 --- Comment #4 from commit-hook@FreeBSD.org --- A commit in branch main references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=3D41032835dc2d489ec7841d7529f74f638= 9329cd3 commit 41032835dc2d489ec7841d7529f74f6389329cd3 Author: Jason A. Harmening <jah@FreeBSD.org> AuthorDate: 2021-02-15 02:47:22 +0000 Commit: Jason A. Harmening <jah@FreeBSD.org> CommitDate: 2021-02-15 18:38:04 +0000 Fix divide-by-zero panic when ASLR is enabled and superpages disabled When locating the anonymous memory region for a vm_map with ASLR enabled, we try to keep the slid base address aligned on a superpage boundary to minimize pagetable fragmentation and maximize the potential usage of superpage mappings. We can't (portably) do this if superpages have been disabled by loader tunable and pagesizes[1] is 0, and it would be less beneficial in that case anyway. PR: 253511 Reported by: johannes@jo-t.de MFC after: 1 week Reviewed by: kib Differential Revision: https://reviews.freebsd.org/D28678 sys/kern/imgact_elf.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) --=20 You are receiving this mail because: You are the assignee for the bug.=
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