qemu-aarch64-static: java dies with SIGILL

[dann frazier]

qemu-aarch64-static from qemu-user-static 1.7.0+dfsg-3ubuntu5
(I haven't tried reproducing w/ upstream git yet)

In an arm64 trusty chroot on an amd64 system:

dannf@server-75e0210e-4f99-4c86-9277-3201ab7b6afd:~$ java
#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGILL (0x4) at pc=0x00000040098e8070, pid=15034, tid=274902467056
#
# JRE version: (7.0_51-b31) (build )
# Java VM: OpenJDK 64-Bit Server VM (25.0-b59 mixed mode linux-aarch64 compressed oops)
# Problematic frame:
# v ~BufferBlob::flush_icache_stub
#
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
# An error report file with more information is saved as:
# /home/dannf/hs_err_pid15034.log
#
# If you would like to submit a bug report, please visit:
# http://bugreport.sun.com/bugreport/crash.jsp
#
qemu: uncaught target signal 6 (Aborted) - core dumped
Aborted (core dumped)
dannf@server-75e0210e-4f99-4c86-9277-3201ab7b6afd:~$

[Alex Bennée (ajbennee)]

For SIGILL's it's useful to have the qemu log with -d unimp output.

[Serge Hallyn (serge-hallyn)]

Hi Dann, would you be able to provide the information requested in comment #1?

[dann frazier (dannf)]

Using 2.1+dfsg-2ubuntu2 from utopic within a trusty ubuntu core:

# /usr/bin/qemu-aarch64-static -d unimp /usr/bin/java
host mmap_min_addr=0x10000
Reserved 0x12000 bytes of guest address space
Relocating guest address space from 0x0000000000400000 to 0x400000
guest_base 0x0
start end size prot
0000000000400000-0000000000401000 0000000000001000 r-x
0000000000410000-0000000000412000 0000000000002000 rw-
0000004000000000-0000004000001000 0000000000001000 ---
0000004000001000-0000004000801000 0000000000800000 rw-
0000004000801000-000000400081c000 000000000001b000 r-x
000000400081c000-000000400082c000 0000000000010000 ---
000000400082c000-000000400082f000 0000000000003000 rw-
start_brk 0x0000000000000000
end_code 0x0000000000400834
start_code 0x0000000000400000
start_data 0x0000000000410db0
end_data 0x0000000000411030
start_stack 0x00000040008007b0
brk 0x0000000000411038
entry 0x0000004000801f80
qemu: uncaught target signal 11 (Segmentation fault) - core dumped
Segmentation fault (core dumped)

[dann frazier (dannf)]

I'm also seeing a SEGV (not a SIGILL) when testing the version of QEMU that shipped in trusty. So, we might just consider this bug fixed and track this segfault issue separately.

[Serge Hallyn (serge-hallyn)]

Hi Dann,

yeah, thanks - let's mark this fixed and open a new one.