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Subject: [Bug 217138] head (e.g.) -r315870 for arm64: sh vs. jemalloc
 asserts: include/jemalloc/internal/tsd.h:687: Failed assertion: "tsd_booted"
 once swapped in after being swapped out (comment 10); fix is a kernel patch
 (comment 37)
Date: Mon, 10 Apr 2017 15:33:04 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D217138

--- Comment #40 from commit-hook@freebsd.org ---
A commit references this bug:

Author: kib
Date: Mon Apr 10 15:32:26 UTC 2017
New revision: 316679
URL: https://svnweb.freebsd.org/changeset/base/316679

Log:
  Do not lose dirty bits for removing PROT_WRITE on arm64.

  Arm64 pmap interprets accessed writable ptes as modified, since
  ARMv8.0 does not track Dirty Bit Modifier in hardware. If writable bit
  is removed, page must be marked as dirty for MI VM.

  This change is most important for COW, where fork caused losing
  content of the dirty pages which were not yet scanned by pagedaemon.

  Reviewed by:  alc, andrew
  Reported and tested by:       Mark Millard <markmi@dsl-only.net>
  PR:   217138, 217239
  Sponsored by: The FreeBSD Foundation
  MFC after:    2 weeks

Changes:
  head/sys/arm64/arm64/pmap.c

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