OpenBSD cvs log

created 2019-12-16T18:04:57Z
begin 2019-12-04T00:00:00Z
end 2019-12-05T00:00:00Z
path src/sys
commits 4

date 2019-12-04T08:17:30Z
author mlarkin
files src/sys/arch/amd64/amd64/vmm.c log diff annotate
message Fix uvm_unmap_remove panic when tearing down VMs.

Type confusion when tearing down a vmm(4) VM's vm_map led UVM to interpret
the vm_map as a struct uvmspace, and occasionally fail. stefan@ pointed out
the root cause a while back but I never had time to look at this until now.

Syzkaller also found a reproducer for this, so the "Reported by" line
below is a clue to let it know to close that bug.

idea by, and ok stefan@
also ok anton@


date 2019-12-04T08:28:29Z
author mlarkin
files src/sys/uvm/uvm_map.c log diff annotate
message Fix a bad offset calculation in uvm_share.

Syzkaller found a bug in uvm_share when using a vmd(8) mmap region with
an offset that ended up making an overlap with a previous vmm(4) uvm_map

This diff reworks the range and offset calculation in uvm_share. Only
vmm(4) uses this, so there should be no visible effects outside vmm(4)

Syzkaller also went sorta crazy on this one, finding multiple reproducers
for the same bug with just slightly different parameters, thus the
multiple "Reported-by" lines below.

ok stefan@, anton@


date 2019-12-04T10:22:05Z
author mpi
files src/sys/scsi/scsi_base.c log diff annotate
message Convert infinite sleeps to {m,t}sleep_nsec(9).

ok krw@, jca@

date 2019-12-04T20:21:35Z
author fcambus
files src/sys/dev/pci/autri.c log diff annotate
message Add sizes for free() in autri(4).

OK mpi@