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Re: [PATCH 0/5] linux-user: brk/mmap fixes
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From: |
Helge Deller |
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Subject: |
Re: [PATCH 0/5] linux-user: brk/mmap fixes |
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Date: |
Tue, 1 Aug 2023 12:43:50 +0200 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.13.0 |
On 8/1/23 06:49, Joel Stanley wrote:
On Mon, 31 Jul 2023 at 18:24, Helge Deller <deller@gmx.de> wrote:
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.
Good!
The arm static binary causes qemu to segfault:
I can't reproduce here.
I tried it in an arm64 chroot which provided the cross-compiler and worked for
me:
(arm64-chroot)root@p100:/# uname -a
Linux p100 6.4.6-200.fc38.x86_64 #1 SMP PREEMPT_DYNAMIC Mon Jul 24 20:51:12 UTC
2023 aarch64 GNU/Linux
(arm64-chroot)root@p100:/# arm-linux-gnueabi-gcc-13 -o hello hello.c -static
(arm64-chroot)root@p100:/# file hello
hello: ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), statically
linked, BuildID[sha1]=fa0f7cd6e1779fa8cd76c6e5d3123900ceefa952, for GNU/Linux
3.2.0, not stripped
(arm64-chroot)root@p100:/# ./hello
Hello, World!
Maybe you can send me your binary (and the needed klibc*so)?
Btw, I tested a whole bunch of platforms too, see below...
Helge
$ 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.
Those I did tested sucessfully (static binary):
alpha-chroot:
Linux p100 6.4.6-200.fc38.x86_64 #1 SMP PREEMPT_DYNAMIC Mon Jul 24 20:51:12 UTC
2023 alpha GNU/Linux
/hello: ELF 64-bit LSB executable, Alpha (unofficial), version 1 (SYSV),
statically linked, BuildID[sha1]=5bf21139aa3937121e8843b062619de8e53d035a, for
GNU/Linux 3.2.0, not stripped
Hello, World!
arm64-chroot:
Linux p100 6.4.6-200.fc38.x86_64 #1 SMP PREEMPT_DYNAMIC Mon Jul 24 20:51:12 UTC
2023 aarch64 GNU/Linux
/hello: ELF 64-bit LSB executable, ARM aarch64, version 1 (GNU/Linux),
statically linked, BuildID[sha1]=201827af1ffdef4fc2afa404047c6d1a41e4825e, for
GNU/Linux 3.7.0, not stripped
Hello, World!
armel-chroot:
Linux p100 6.4.6-200.fc38.x86_64 #1 SMP PREEMPT_DYNAMIC Mon Jul 24 20:51:12 UTC
2023 armv7l GNU/Linux
/hello: ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), statically
linked, BuildID[sha1]=6e6a52f60037690052b2e54e750a56543ed9d7a0, for GNU/Linux
3.2.0, not stripped
Hello, World!
armhf-chroot:
Linux p100 6.4.6-200.fc38.x86_64 #1 SMP PREEMPT_DYNAMIC Mon Jul 24 20:51:12 UTC
2023 armv7l GNU/Linux
/hello: ELF 32-bit LSB executable, ARM, EABI5 version 1 (GNU/Linux), statically
linked, BuildID[sha1]=842df9fd0bf910f6a00c19d61435387efa591390, for GNU/Linux
3.2.0, not stripped
Hello, World!
hppa-chroot:
Linux p100 6.4.6-200.fc38.x86_64 #1 SMP PREEMPT_DYNAMIC Mon Jul 24 20:51:12 UTC
2023 parisc GNU/Linux
/hello: ELF 32-bit MSB executable, PA-RISC, 1.1 version 1 (GNU/Linux),
statically linked, BuildID[sha1]=03d4b299b31d30b5920e9fdcfccce071b77e4447, for
GNU/Linux 3.2.0, not stripped
Hello, World!
m68k-chroot:
Linux p100 6.4.6-200.fc38.x86_64 #1 SMP PREEMPT_DYNAMIC Mon Jul 24 20:51:12 UTC
2023 m68k GNU/Linux
/hello: ELF 32-bit MSB executable, Motorola m68k, 68020, version 1 (SYSV),
statically linked, BuildID[sha1]=c01101b8ae6a6a0161a08b6ac24821b28daa5b73, for
GNU/Linux 3.2.0, not stripped
Hello, World!
mips64el-chroot:
Linux p100 6.4.6-200.fc38.x86_64 #1 SMP PREEMPT_DYNAMIC Mon Jul 24 20:51:12 UTC
2023 mips64 GNU/Linux
/hello: ELF 64-bit LSB executable, MIPS, MIPS64 rel2 version 1 (SYSV),
statically linked, BuildID[sha1]=0c50fc29be7ef781cdfb4ec4c47b4e350cab218b, for
GNU/Linux 3.2.0, not stripped
Hello, World!
mipsel-chroot:
Linux p100 6.4.6-200.fc38.x86_64 #1 SMP PREEMPT_DYNAMIC Mon Jul 24 20:51:12 UTC
2023 mips GNU/Linux
/hello: ELF 32-bit LSB executable, MIPS, MIPS32 rel2 version 1 (SYSV),
statically linked, BuildID[sha1]=e0db11bbc59070f5fefb4355d73df76791e96c29, for
GNU/Linux 3.2.0, not stripped
Hello, World!
powerpc-chroot:
Linux p100 6.4.6-200.fc38.x86_64 #1 SMP PREEMPT_DYNAMIC Mon Jul 24 20:51:12 UTC
2023 ppc GNU/Linux
/hello: ELF 32-bit MSB executable, PowerPC or cisco 4500, version 1 (SYSV),
statically linked, BuildID[sha1]=4fe85ef8ebd86eb383ccf4fd741ce224143da2b2, for
GNU/Linux 3.2.0, not stripped
Hello, World!
ppc64-chroot:
Linux p100 6.4.6-200.fc38.x86_64 #1 SMP PREEMPT_DYNAMIC Mon Jul 24 20:51:12 UTC
2023 ppc64 GNU/Linux
/hello: ELF 64-bit MSB executable, 64-bit PowerPC or cisco 7500, Power ELF V1
ABI, version 1 (GNU/Linux), statically linked,
BuildID[sha1]=c3bb5c4d94b2096f70261bf0ab1f3fc93813df8f, for GNU/Linux 3.2.0,
not stripped
Hello, World!
ppc64el-chroot:
Linux p100 6.4.6-200.fc38.x86_64 #1 SMP PREEMPT_DYNAMIC Mon Jul 24 20:51:12 UTC
2023 ppc64le GNU/Linux
/hello: ELF 64-bit LSB executable, 64-bit PowerPC or cisco 7500, OpenPOWER ELF
V2 ABI, version 1 (GNU/Linux), statically linked,
BuildID[sha1]=645abb5dcd9075d826d539675258fa5f9c7bc777, for GNU/Linux 3.10.0,
not stripped
Hello, World!
s390x-chroot:
Linux p100 6.4.6-200.fc38.x86_64 #1 SMP PREEMPT_DYNAMIC Mon Jul 24 20:51:12 UTC
2023 s390x GNU/Linux
/hello: ELF 64-bit MSB executable, IBM S/390, version 1 (GNU/Linux), statically
linked, BuildID[sha1]=f512d5ac759962ab66ae947d1308c8ceedef8fd3, for GNU/Linux
3.2.0, not stripped
Hello, World!
sh4-chroot:
Linux p100 6.4.6-200.fc38.x86_64 #1 SMP PREEMPT_DYNAMIC Mon Jul 24 20:51:12 UTC
2023 sh4 GNU/Linux
/hello: ELF 32-bit LSB executable, Renesas SH, version 1 (SYSV), statically
linked, BuildID[sha1]=4cf38c7f67b5d7dc7a93c6ab513aaf0d2d21c4fc, for GNU/Linux
3.2.0, not stripped
Hello, World!
sparc64-chroot:
Linux p100 6.4.6-200.fc38.x86_64 #1 SMP PREEMPT_DYNAMIC Mon Jul 24 20:51:12 UTC
2023 sparc64 GNU/Linux
/hello: ELF 64-bit MSB executable, SPARC V9, Sun UltraSPARC1 Extensions
Required, relaxed memory ordering, version 1 (GNU/Linux), statically linked,
BuildID[sha1]=36f02b1b3acc94f61dff6dc26205f82314c899e0, for GNU/Linux 3.2.0,
not stripped
Hello, World!