Package: rr
Version: 5.8.0-1
Severity: normal
X-Debbugs-Cc: debian-...@lists.debian.org, bernha...@mailbox.org
User: debian-...@lists.debian.org
Usertags: arm64
Dear Maintainer,
I tried to run rr within a Debian arm64 trixie/unstable,
running at a Raspberry Pi 3 with a ARM Cortex-A53.
I know this CPU does not support rr,
but crashing may still not be desired.
Following is an example gdb session where the crash happens
in the static initialization by using a "retaa" instruction,
which seems to belong to pointer authentication, but I am
not sure if this CPU is supposed to support it.
If pointer authentication is not part of the arm64 baseline,
maybe the package isa-support should provide a package
which rr can depend on, like it does to sse2-support at i386?
Kind regards,
Bernhard
root@rpi3-20240331:~# gdb -q --args rr true
Reading symbols from rr...
Reading symbols from
/usr/lib/debug/.build-id/d5/cbd34499cde785655fcd7cb84960a78162b147.debug...
(gdb) set width 0
(gdb) set pagination off
(gdb) run
Starting program: /usr/bin/rr true
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/aarch64-linux-gnu/libthread_db.so.1".
Program received signal SIGILL, Illegal instruction.
0x0000aaaaaab1be44 in std::vector<rr::Command*, std::allocator<rr::Command*>
>::_M_realloc_insert<rr::Command*> (this=<optimized out>, __position=...,
__position@entry=non-dereferenceable iterator for std::vector) at
/usr/include/c++/13/bits/vector.tcc:524
warning: Source file is more recent than executable.
524 }
(gdb) bt
#0 0x0000aaaaaab1be44 in std::vector<rr::Command*, std::allocator<rr::Command*>
>::_M_realloc_insert<rr::Command*> (this=<optimized out>, __position=...,
__position@entry=non-dereferenceable iterator for std::vector) at
/usr/include/c++/13/bits/vector.tcc:524
#1 0x0000aaaaaab1b950 in std::vector<rr::Command*, std::allocator<rr::Command*>
>::emplace_back<rr::Command*> (this=<optimized out>) at
/usr/include/c++/13/bits/stl_iterator.h:1076
#2 std::vector<rr::Command*, std::allocator<rr::Command*> >::push_back
(__x=@0xfffffffffc10: 0xaaaaaad50560 <rr::BuildidCommand::singleton>, this=<optimized out>)
at /usr/include/c++/13/bits/stl_vector.h:1299
#3 rr::Command::Command (this=this@entry=0xaaaaaad50560 <rr::BuildidCommand::singleton>,
name=name@entry=0xaaaaaacc8310 "buildid", help=help@entry=0xaaaaaacc8280 " rr buildid\n
Accepts paths on stdin, prints buildids on stdout. Will terminate when\n either an empty line or an
invalid path is provided.\n") at ./src/Command.cc:37
#4 0x0000aaaaaaaf9900 in rr::BuildidCommand::BuildidCommand (help=0xaaaaaacc8280 " rr buildid\n
Accepts paths on stdin, prints buildids on stdout. Will terminate when\n either an empty line or an
invalid path is provided.\n", name=0xaaaaaacc8310 "buildid", this=0xaaaaaad50560
<rr::BuildidCommand::singleton>) at ./src/BuildidCommand.cc:19
#5 __static_initialization_and_destruction_0 () at ./src/BuildidCommand.cc:28
#6 _GLOBAL__sub_I__ZN2rr14BuildidCommand9singletonE () at
./src/BuildidCommand.cc:56
#7 0x0000fffff77b229c in call_init (env=<optimized out>, argv=0xfffffffffcd8,
argc=2) at ../csu/libc-start.c:145
#8 __libc_start_main_impl (main=0xaaaaaaafa530 <main(int, char**)>, argc=2, argv=0xfffffffffcd8,
init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>,
stack_end=<optimized out>) at ../csu/libc-start.c:347
#9 0x0000aaaaaaafc970 in _start ()
(gdb) display/i $pc
1: x/i $pc
=> 0xaaaaaab1be44
<_ZNSt6vectorIPN2rr7CommandESaIS2_EE17_M_realloc_insertIJS2_EEEvN9__gnu_cxx17__normal_iteratorIPS2_S4_EEDpOT_+180>:
retaa
(gdb) shell lscpu
Architecture: aarch64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 4
On-line CPU(s) list: 0-3
Vendor ID: ARM
Model name: Cortex-A53
Model: 4
Thread(s) per core: 1
Core(s) per cluster: 4
Socket(s): -
Cluster(s): 1
Stepping: r0p4
CPU(s) scaling MHz: 100%
CPU max MHz: 1200,0000
CPU min MHz: 600,0000
BogoMIPS: 38,40
Flags: fp asimd evtstrm crc32 cpuid
...
(gdb) shell uname -a
Linux rpi3-20240331 6.10.3-arm64 #1 SMP Debian 6.10.3-1 (2024-08-04) aarch64
GNU/Linux
(gdb)
-- System Information:
Debian Release: trixie/sid
APT prefers testing-debug
APT policy: (500, 'testing-debug'), (500, 'testing')
Architecture: arm64 (aarch64)
Kernel: Linux 6.10.3-arm64 (SMP w/4 CPU threads)
Kernel taint flags: TAINT_CRAP
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages rr depends on:
ii libbrotli1 1.1.0-2+b4
ii libc6 2.39-6
ii libcapnp-1.0.1 1.0.1-4
ii libgcc-s1 14.2.0-1
ii libstdc++6 14.2.0-1
ii python3 3.12.4-1
ii zlib1g 1:1.3.dfsg+really1.3.1-1
rr recommends no packages.
rr suggests no packages.
-- no debconf information
