On 2017-Aug-30, at 4:00 AM, Mark Linimon <lini...@lonesome.com> wrote:
> On Wed, Aug 30, 2017 at 03:09:40AM -0700, Mark Millard wrote:
>> It appears that qemu-ppc64-static and qemu-ppc-static from
>> emulators/qemu-user-static are broken.
>
> Correct, and known for some time. (fwiw sparc64 hangs as well.)
Looks like qemu-ppc64-static is stuck in a loop, calling
repeatedly:
do_freebsd_syscall (cpu_env=0x860ea3ac0, num=58, arg1=14, arg2=35995509911,
arg3=1024, arg4=268435904, arg5=281494784, arg6=35985701568, arg7=515,
arg8=35985668288)
at
/wrkdirs/usr/ports/emulators/qemu-user-static/work/qemu-bsd-user-17977d0/bsd-user/syscall.c:210
210
/wrkdirs/usr/ports/emulators/qemu-user-static/work/qemu-bsd-user-17977d0/bsd-user/syscall.c:
No such file or directory.
Which is for:
58 AUE_READLINK STD { ssize_t readlink(char *path, char *buf, \
size_t count); }
As confirmed by (note the "callq 0x60207360 <readlink>" ):
(gdb)
lock_user_string (guest_addr=14) at
/wrkdirs/usr/ports/emulators/qemu-user-static/work/qemu-bsd-user-17977d0/bsd-user/qemu.h:508
508
/wrkdirs/usr/ports/emulators/qemu-user-static/work/qemu-bsd-user-17977d0/bsd-user/qemu.h:
No such file or directory.
(gdb) x/64i 0x0000000060045d3e
=> 0x60045d3e <do_freebsd_syscall+3246>: callq 0x6004fd20
<target_strlen>
0x60045d43 <do_freebsd_syscall+3251>: test %rax,%rax
0x60045d46 <do_freebsd_syscall+3254>: js 0x6004b99c
<do_freebsd_syscall+26892>
0x60045d4c <do_freebsd_syscall+3260>: inc %rax
0x60045d4f <do_freebsd_syscall+3263>: mov $0x1,%edx
0x60045d54 <do_freebsd_syscall+3268>: mov %rbx,%rdi
0x60045d57 <do_freebsd_syscall+3271>: mov %rax,%rsi
0x60045d5a <do_freebsd_syscall+3274>: callq 0x6003c430
<page_check_range>
0x60045d5f <do_freebsd_syscall+3279>: test %eax,%eax
0x60045d61 <do_freebsd_syscall+3281>: jne 0x6004bce4
<do_freebsd_syscall+27732>
0x60045d67 <do_freebsd_syscall+3287>: add 0x26d91b2(%rip),%rbx
# 0x6271ef20 <guest_base>
0x60045d6e <do_freebsd_syscall+3294>: je 0x6004bce4
<do_freebsd_syscall+27732>
0x60045d74 <do_freebsd_syscall+3300>: mov $0x3,%edx
0x60045d79 <do_freebsd_syscall+3305>: mov -0x2a8(%rbp),%r14
0x60045d80 <do_freebsd_syscall+3312>: mov %r14,%rdi
0x60045d83 <do_freebsd_syscall+3315>: mov %r12,%rsi
0x60045d86 <do_freebsd_syscall+3318>: callq 0x6003c430
<page_check_range>
0x60045d8b <do_freebsd_syscall+3323>: test %eax,%eax
0x60045d8d <do_freebsd_syscall+3325>: jne 0x6004bce4
<do_freebsd_syscall+27732>
0x60045d93 <do_freebsd_syscall+3331>: add 0x26d9186(%rip),%r14
# 0x6271ef20 <guest_base>
0x60045d9a <do_freebsd_syscall+3338>: mov -0x294(%rbp),%r10d
0x60045da1 <do_freebsd_syscall+3345>: mov $0xfffffffffffffff2,%r13
0x60045da8 <do_freebsd_syscall+3352>: je 0x6004bcf2
<do_freebsd_syscall+27746>
0x60045dae <do_freebsd_syscall+3358>: mov $0x602b93da,%esi
0x60045db3 <do_freebsd_syscall+3363>: mov %rbx,%rdi
0x60045db6 <do_freebsd_syscall+3366>: callq 0x60230af0 <strcmp>
0x60045dbb <do_freebsd_syscall+3371>: test %eax,%eax
0x60045dbd <do_freebsd_syscall+3373>: je 0x6004c566
<do_freebsd_syscall+29910>
0x60045dc3 <do_freebsd_syscall+3379>: mov %rbx,%rdi
0x60045dc6 <do_freebsd_syscall+3382>: callq 0x60158660 <path>
0x60045dcb <do_freebsd_syscall+3387>: mov %rax,%rdi
0x60045dce <do_freebsd_syscall+3390>: mov %r14,%rsi
0x60045dd1 <do_freebsd_syscall+3393>: mov %r12,%rdx
0x60045dd4 <do_freebsd_syscall+3396>: callq 0x60207360 <readlink>
But note that the "lock_user_string (guest_addr=14)" and
"do_freebsd_syscall (cpu_env=0x860ea3ac0, num=58, arg1=14,"
indicate that the "readlink(char *path," is using a really
small address for the path string.
I've not figured a way for poudriere bulk builds to leave
behind the source code automatically. So far I've not
looked at the qemu-bsd-user source code. I do build with
both debug and optimization turned on via bsd.port.mk
having:
STRIP_CMD= ${TRUE}
.endif
DEBUG_FLAGS?= -g
+.if defined(ALLOW_OPTIMIZATIONS_FOR_WITH_DEBUG)
+CFLAGS:= ${CFLAGS} ${DEBUG_FLAGS}
+.else
CFLAGS:= ${CFLAGS:N-O*:N-fno-strict*} ${DEBUG_FLAGS}
+.endif
.if defined(INSTALL_TARGET)
INSTALL_TARGET:= ${INSTALL_TARGET:S/^install-strip$/install/g}
.endif
mixed with make.conf indicating to use the
new alternative:
WANT_QT_VERBOSE_CONFIGURE=1
#
DEFAULT_VERSIONS+=perl5=5.24 gcc=7
#
# From a local /usr/ports/Mk/bsd.port.mk extension:
ALLOW_OPTIMIZATIONS_FOR_WITH_DEBUG=
#
.if ${.CURDIR:M*/devel/llvm*}
#WITH_DEBUG=
.elif ${.CURDIR:M*/www/webkit-qt5*}
#WITH_DEBUG=
.else
WITH_DEBUG=
.endif
MALLOC_PRODUCTION=
I got as much information as I report
above via use of:
/usr/local/bin/gdb /usr/local/bin/qemu-user-static
and then:
run /usr/obj/DESTDIRs/clang-powerpc64-installworld-dist-from-src/rescue/id
and then interrupting it and exploring.
===
Mark Millard
markmi at dsl-only.net
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