[Qemu-devel] [Bug 1727737] Re: qemu-arm stalls on a GCC sanitizer test since qemu-2.7

[Christophe Lyon <christophe.lyon+launchpad@gmail.com>]

** Attachment added: "tarball with testcase and libs"
   https://bugs.launchpad.net/qemu/+bug/1727737/+attachment/4996620/+files/qemu-bug-gcc-sanitizers.tar.xz

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https://bugs.launchpad.net/bugs/1727737

Title:
  qemu-arm stalls on a GCC sanitizer test since qemu-2.7

Status in QEMU:
  New

Bug description:
  Hi,

  I have noticed that several GCC/sanitizer tests fail with timeout when
  executed under QEMU.

  After a bit of investigation, I have noticed that this worked with
  qemu-2.7, and started failing with qemu-2.8, and still fails with
  qemu-2.10.1

  I'm attaching a tarball containing:
  alloca_instruments_all_paddings.exe : the testcase, and the needed libs:
  lib/librt.so.1
  lib/libdl.so.2
  lib/ld-linux-armhf.so.3
  lib/libasan.so.5
  lib/libc.so.6
  lib/libgcc_s.so.1
  lib/libpthread.so.0
  lib/libm.so.6

  To reproduce the problem:
  $ qemu-arm -cpu any -R 0 -L $PWD $PWD/alloca_instruments_all_paddings.exe
  returns in less than a second with qemu-2.7, and never with qemu-2.8

  Using -d in_asm suggests that the program "almost" completes and qemu seems to stall on:
  0x40b6eb44: e08f4004 add r4, pc, r4

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