[Bug 253511] vm.pmap.pg_ps_enabled=0 and kern.elf64.aslr.enable=1 panics with integer divide by zero

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=253511

--- Comment #4 from commit-hook at FreeBSD.org ---
A commit in branch main references this bug:

URL:
https://cgit.FreeBSD.org/src/commit/?id=41032835dc2d489ec7841d7529f74f6389329cd3

commit 41032835dc2d489ec7841d7529f74f6389329cd3
Author:     Jason A. Harmening <jah at FreeBSD.org>
AuthorDate: 2021-02-15 02:47:22 +0000
Commit:     Jason A. Harmening <jah at 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 at 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(-)

-- 
You are receiving this mail because:
You are the assignee for the bug.