[Qemu-devel] [Bug 1832353] [NEW] cpu_exec: Assertion !have_mmap_lock() failed

[Christophe Lyon]

Public bug reported:

Hi,

I have isolated a testcase from the GCC testsuite (actually gfortran,
test proc_ptr_51.f90) which produces tons of:

qemu-arm: /home/christophe.lyon/src/qemu/accel/tcg/cpu-exec.c:701:
cpu_exec: Assertion `!have_mmap_lock()' failed.

including with master qemu as of today.

I'm attaching a tarball containing:
qemu-assert:
cmd  lib  proc_ptr_51.exe

qemu-assert/lib:
ld-linux-armhf.so.3  libc.so.6  libgcc_s.so.1  libgfortran.so.5  libm.so.6

where cmd is the basic command used to launch the test & reproduce the
failure.

Note that the test or the generated may actually be buggy: I have
reported failures on native aarch64 and arm machines. Yet, qemu should
not fail with a loop of asserts.

** Affects: qemu
     Importance: Undecided
         Status: New

** Attachment added: "qemu-assert.tar.xz"
   
https://bugs.launchpad.net/bugs/1832353/+attachment/5270140/+files/qemu-assert.tar.xz

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https://bugs.launchpad.net/bugs/1832353

Title:
  cpu_exec: Assertion !have_mmap_lock() failed

Status in QEMU:
  New

Bug description:
  Hi,

  I have isolated a testcase from the GCC testsuite (actually gfortran,
  test proc_ptr_51.f90) which produces tons of:

  qemu-arm: /home/christophe.lyon/src/qemu/accel/tcg/cpu-exec.c:701:
  cpu_exec: Assertion `!have_mmap_lock()' failed.

  including with master qemu as of today.

  I'm attaching a tarball containing:
  qemu-assert:
  cmd  lib  proc_ptr_51.exe

  qemu-assert/lib:
  ld-linux-armhf.so.3  libc.so.6  libgcc_s.so.1  libgfortran.so.5  libm.so.6

  where cmd is the basic command used to launch the test & reproduce the
  failure.

  Note that the test or the generated may actually be buggy: I have
  reported failures on native aarch64 and arm machines. Yet, qemu should
  not fail with a loop of asserts.

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