On 08/02/16 21:25, Konstantin Belousov wrote:
Below is the merge of some high-profile virtual memory subsystem bug
fixes from stable/10 to 10.3. I merged fixes for bugs reported by
users, issues which are even theoretically unlikely to occur in real
world loads, are not included into the patch set. The later is mostly
corrections for the handling of radix insertion failures. Included fixes
are for random SIGSEGV delivered to processes, hangs on "vodead" state
on filesystem operations, and several others.
List of the merged revisions:
r301184 prevent parallel object collapses, fixes object lifecycle
r301436 do not leak the vm object lock, fixes overcommit disable
r302243 avoid the active object marking for vm.vmtotal sysctl, fixes
"vodead" hangs
r302513 vm_fault() race with the vm_object_collapse(), fixes spurious SIGSEGV
r303291 postpone BO_DEAD, fixes panic on fast vnode reclaim
I am asking for some testing, it is not necessary for your system to
exhibit the problematic behaviour for your testing to be useful. I am
more looking for smoke-testing kind of confirmation that patch is fine.
Neither I nor people who usually help me with testing, run 10.3 systems.
If everything appear to be fine, my intent is to ask re/so to issue
Errata Notice with these changes in about a week from now.
I upgraded a 10.3/amd64 system which in fact was showing some possibly
related troubles.
So far so good, since I haven't had any problem: altough it's close to
impossible to deterministically reproduce the locks I've had, I saw no
regression so far.
I plan to upgrade other boxes in some weeks.
bye & Thanks
av.
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