On 19.05.2017 17:30, Chuck Silvers wrote:
> Module Name:  src
> Committed By: chs
> Date:         Fri May 19 15:30:19 UTC 2017
> Modified Files:
>       src/sys/uvm: uvm_map.c uvm_mmap.c
> Log Message:
> make MAP_FIXED mapping operations atomic. fixes PR 52239.
> previously, unmapping any entries being replaced was done separately
> from entering the new mapping, which allowed another thread doing
> a non-MAP_FIXED mapping to allocate the range out from under the
> MAP_FIXED thread.
> To generate a diff of this commit:
> cvs rdiff -u -r1.346 -r1.347 src/sys/uvm/uvm_map.c
> cvs rdiff -u -r1.164 -r1.165 src/sys/uvm/uvm_mmap.c

UVM broke after this commit. I cannot build packages due to random
memory corruptions. Processes die / files (at least executables) contain

There are also users on IRC reporting the same behavior.

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