fork: Copy the vm_stacktop field into the new vmspace
Fixes: 1811c1e957
("exec: Reimplement stack address randomization")
Reported by: pho
Reported by: syzbot+0446312a51bc13ead834@syzkaller.appspotmail.com
Sponsored by: The FreeBSD Foundation
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parent
5eb81a4b40
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46d35d415a
@ -4263,6 +4263,7 @@ vmspace_fork(struct vmspace *vm1, vm_ooffset_t *fork_charge)
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vm2->vm_taddr = vm1->vm_taddr;
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vm2->vm_daddr = vm1->vm_daddr;
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vm2->vm_maxsaddr = vm1->vm_maxsaddr;
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vm2->vm_stacktop = vm1->vm_stacktop;
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vm_map_lock(old_map);
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if (old_map->busy)
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vm_map_wait_busy(old_map);
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