On Mon, 31 Jul 2023 at 18:24, Helge Deller <del...@gmx.de> wrote:
> > I re-read the thread again. As it seems Joel already tried the latest
> > version from me? Sadly I can't test myself on ppc64le (static binary
> > needs klibc-PupSAGgtpafMlSLXOLgje1kXFo8.so in /usr/lib which I can't
> > install on a debian porterbox).
> >
> > I still believe we need to track host and target brk page, but I'll give
> > your patch a try.
>
> As suggested, I've based my patches on top of yours and the tree can be
> pulled from:
> git pull https://github.com/hdeller/qemu-hppa/ brk-fixes-akihiko-2
>
> My patches are neccessary to fix an arm-static testcase:
> /usr/bin/qemu-arm-static ./fstype
>
> Let's try this patch series...
The armhf static binary works with expected output.
The arm static binary causes qemu to segfault:
$ gdb -quiet --args ./build/qemu-arm -d guest_errors,page,strace ~/hello
Reading symbols from ./build/qemu-arm...
(gdb) r
Starting program: build/qemu-arm -d guest_errors,page,strace
/home/joel/hello
Using host libthread_db library "/lib/powerpc64le-linux-gnu/libthread_db.so.1".
[New Thread 0x7ffff762ece0 (LWP 118359)]
host mmap_min_addr=0x10000
pgb_find_hole: base @ 140420000 for 4294967296 bytes
pgb_static: base @ 140420000 for 4294967295 bytes
pgb_reserved_va: base @ 0x140420000 for 4294967296 bytes
Locating guest address space @ 0x140420000
page layout changed following mmap
start end size prot
00010000-00090000 00080000 ---
00090000-0009b000 0000b000 ---
ffff0000-00000000 00010000 r-x
page layout changed following mmap
start end size prot
00010000-00090000 00080000 r-x
00090000-0009b000 0000b000 ---
ffff0000-00000000 00010000 r-x
page layout changed following mmap
start end size prot
00010000-00090000 00080000 r-x
00090000-000a0000 00010000 rw-
ffff0000-00000000 00010000 r-x
page layout changed following mmap
start end size prot
00010000-00090000 00080000 r-x
00090000-000a0000 00010000 rw-
e0000000-e0810000 00810000 rw-
ffff0000-00000000 00010000 r-x
page layout changed following mmap
start end size prot
00010000-00090000 00080000 r-x
00090000-000a0000 00010000 rw-
e0000000-e0010000 00010000 ---
e0010000-e0811000 00801000 rw-
ffff0000-00000000 00010000 r-x
guest_base 0x140420000
page layout changed following binary load
start end size prot
00010000-00090000 00080000 r-x
00090000-000a0000 00010000 rw-
e0000000-e0010000 00010000 ---
e0010000-e0810000 00800000 rw-
e0810000-e0811000 00001000 r-x
ffff0000-00000000 00010000 r-x
start_brk 0x00000000
end_code 0x00084f7c
start_code 0x00010000
start_data 0x00095098
end_data 0x00098394
start_stack 0xe080f410
brk 0x0009b000
entry 0x00010418
argv_start 0xe080f414
env_start 0xe080f41c
auxv_start 0xe080f4a0
118357 brk(NULL) = 0x0009b000
118357 brk(0x0009b8fc) = 0x0009b000
Thread 1 "qemu-arm" received signal SIGSEGV, Segmentation fault.
0x00007fffeed9bb74 in code_gen_buffer ()
(gdb)
(gdb) bt
#0 0x00007fffeed9bb74 in code_gen_buffer ()
#1 0x0000000100169e3c in cpu_tb_exec (cpu=cpu@entry=0x1003d4aa0,
itb=itb@entry=0x7fffeed9ba60 <code_gen_buffer+47512>,
tb_exit=tb_exit@entry=0x7fffffffe50c)
at ../accel/tcg/cpu-exec.c:457
#2 0x000000010016a564 in cpu_loop_exec_tb (tb_exit=0x7fffffffe50c,
last_tb=<synthetic pointer>,
pc=<optimised out>, tb=0x7fffeed9ba60 <code_gen_buffer+47512>,
cpu=<optimised out>)
at ../accel/tcg/cpu-exec.c:919
#3 cpu_exec_loop (cpu=cpu@entry=0x1003d4aa0, sc=<optimised out>) at
../accel/tcg/cpu-exec.c:1040
#4 0x000000010016aa0c in cpu_exec_setjmp (cpu=cpu@entry=0x1003d4aa0,
sc=<optimised out>)
at ../accel/tcg/cpu-exec.c:1057
#5 0x000000010016b0d0 in cpu_exec (cpu=0x1003d4aa0) at
../accel/tcg/cpu-exec.c:1083
#6 0x000000010004d780 in cpu_loop (env=0x1003d4fb0) at
../linux-user/arm/cpu_loop.c:323
#7 0x0000000100047534 in main (argc=<optimised out>,
argv=0x7ffffffff178, envp=<optimised out>)
at ../linux-user/main.c:975
I tested 74a22a175c4340a01f6f860f72307093e3307681.
