Monday Patch Queue Review update (2021-10-04)

Monday Patch Queue Review update (2021-10-04)

[Adhemerval Zanella]

Most recent meeting status is always here:
https://sourceware.org/glibc/wiki/PatchworkReviewMeetings#Update

Meeting: 2021-09-27 @ 0900h EST (UTC-5)

Video/Audio: https://bluejeans.com/9093064454

IRC: #glibc on OFTC.

Review new patches and restart review at the top.

* 398 patches in the NEW/NOBODY queue.

* H.J:
  * Most of the patches are in, there are 2 ones that need review:
    * Remove copy relocations: rquires linker, compiler, and runtime changes
      * https://patchwork.sourceware.org/project/glibc/patch/20210803215914.4170913-1-hjl.tools@gmail.com/ and https://patchwork.sourceware.org/project/glibc/patch/20210803215914.4170913-2-hjl.tools@gmail.com/
    * https://patchwork.sourceware.org/project/glibc/patch/20210924165338.2326917-2-hjl.tools@gmail.com/
      * Two issues: we don't need an API, we can use the syscall directly
      * Multiple users results in UB, so glibc acts as a gatekeeper
      * Hard to backport, so the patch adds no new symbol
      * Szabolcs is not sure if the rigth direction
        * Existing code which does something with pointer tag bits and make code incompatibility.
      * H.J pointed that a internal LAM branches fixes it.
        * These are independently of the LAM glibc API.
      * H.J will send examples on how to use this API

* Szabolcs:
  * elf: Avoid deadlock between pthread_create and ctors [BZ #28357]
  * Backport to 2.34

* We didn't make any patchwork evaluation.