No, I completely understand. I was trying to think of a graceful way that
the SSE4.2 extensions could be checked for and an error reported instead of
an illegal instruction. I guess that's about the best you can do. Anyway,
thanks for the explanation.

On Wed, Mar 8, 2023, 06:40 Christian Ehrhardt  <email address hidden>
wrote:

> *** This bug is a duplicate of bug 2009540 ***
>     https://bugs.launchpad.net/bugs/2009540
>
> Hi Garret,
> this is a bug I was waiting for a long time, I thought we were over it by
> time passing by and HW getting newer.
>
> Upstream dpdk decided years ago that SSE4.2 (and crc32 on arm for that
> matter) is the lowest common denominator. That is higher than the usual
> baseline of Ubuntu, but there isn't much we can do about it.
>
> You can track [1] back to almost the eternity of the DPDK project.
>
> This isn't a regression, nor a bug in the classic meaning.
>
> If you have a strong use case for HW that won't have this feature in the
> future (I mean my almost dying 8 year old server has this, so it is not
> new), but makes sense for DPDK to run on you might bring it up with the
> DPDK community [2] to consider making this a non-hard requirement (many
> other things are run-time optimizations).
>
> From just Ubuntu's POV I'm not sure what we could do right now :-/
>
> [1]: https://github.com/DPDK/dpdk/blame/main/config/x86/meson.build#L28
> [2]: https://bugs.dpdk.org/
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/2009635
>
> Title:
>   librte-net22 / librte_net.so.22 SIGILL in rte_srand()
>
> Status in dpdk package in Ubuntu:
>   New
>
> Bug description:
>   I think this bug has been reported against gqrx several times, but one
>   can duplicate the issue by installing `uhd-host` on a system without
>   sse4_2 extensions and executing `uhd_usrp_probe`.
>
>   The `pcmpgtq` instruction requires sse4_2, and my system only has sse4_1.
>   $ dpkg -S /usr/lib/x86_64-linux-gnu/librte_net.so.22
>   librte-net22:amd64: /usr/lib/x86_64-linux-gnu/librte_net.so.22
>
>   +
>
>   See https://github.com/gqrx-sdr/gqrx/issues/1180
>
>   Thanks for considering.
>
>
>   ```
>   (gdb) run
>
>   Starting program: /usr/bin/uhd_usrp_probe
>   [Thread debugging using libthread_db enabled]
>   Using host libthread_db library
> "/lib/x86_64-linux-gnu/libthread_db.so.1".
>
>   Program received signal SIGILL, Illegal instruction.
>   0x00007ffff6f1e684 in __rte_rand_lfsr258_gen_seed (min_value=<optimized
> out>, seed=<optimized out>) at ../lib/eal/common/rte_random.c:60
>   Download failed: Invalid argument.  Continuing without source file
> ./obj-x86_64-linux-gnu/../lib/eal/common/rte_random.c.
>   60    ../lib/eal/common/rte_random.c: No such file or directory.
>   (gdb) bt
>   #0  0x00007ffff6f1e684 in __rte_rand_lfsr258_gen_seed
> (min_value=<optimized out>, seed=<optimized out>)
>       at ../lib/eal/common/rte_random.c:60
>   #1  __rte_srand_lfsr258 (state=<optimized out>, seed=<optimized out>) at
> ../lib/eal/common/rte_random.c:72
>   #2  rte_srand (seed=11813869339904743830) at
> ../lib/eal/common/rte_random.c:86
>   #3  0x00007ffff6f128cc in _sub_I_65535_0.0 () from
> /lib/x86_64-linux-gnu/librte_eal.so.22
>   #4  0x00007ffff7fcbfbe in call_init (l=<optimized out>, argc=argc@entry=1,
> argv=argv@entry=0x7fffffffdfc8, env=env@entry=0x7fffffffdfd8)
>       at ./elf/dl-init.c:70
>   #5  0x00007ffff7fcc0a8 in call_init (env=0x7fffffffdfd8,
> argv=0x7fffffffdfc8, argc=1, l=<optimized out>) at ./elf/dl-init.c:33
>   #6  _dl_init (main_map=0x7ffff7ffe2e0, argc=1, argv=0x7fffffffdfc8,
> env=0x7fffffffdfd8) at ./elf/dl-init.c:117
>   #7  0x00007ffff7fe48b0 in _dl_start_user () from
> /lib64/ld-linux-x86-64.so.2
>   #8  0x0000000000000001 in ?? ()
>   #9  0x00007fffffffe307 in ?? ()
>   #10 0x0000000000000000 in ?? ()
>   (gdb) disassemble __rte_rand_lfsr258_gen_seed
>   Dump of assembler code for function rte_srand:
>      0x00007ffff6f1e560 <+0>:   endbr64
>      0x00007ffff6f1e564 <+4>:   movq   %rdi,%xmm2
>      0x00007ffff6f1e569 <+9>:   movdqa 0x1b4bf(%rip),%xmm3        #
> 0x7ffff6f39a30
>      0x00007ffff6f1e571 <+17>:  punpcklqdq %xmm2,%xmm2
>      0x00007ffff6f1e575 <+21>:  lea    0x48684(%rip),%rax        #
> 0x7ffff6f66c00 <rand_states>
>      0x00007ffff6f1e57c <+28>:  movaps %xmm2,-0x18(%rsp)
>      0x00007ffff6f1e581 <+33>:  movdqa 0x1b486(%rip),%xmm13        #
> 0x7ffff6f39a10
>      0x00007ffff6f1e58a <+42>:  movdqa 0x1b4ae(%rip),%xmm2        #
> 0x7ffff6f39a40
>      0x00007ffff6f1e592 <+50>:  lea    0x2000(%rax),%rdx
>      0x00007ffff6f1e599 <+57>:  movdqa 0x1b4be(%rip),%xmm14        #
> 0x7ffff6f39a60
>      0x00007ffff6f1e5a2 <+66>:  nopw   0x0(%rax,%rax,1)
>      0x00007ffff6f1e5a8 <+72>:  movdqa %xmm13,%xmm1
>      0x00007ffff6f1e5ad <+77>:  movdqa -0x18(%rsp),%xmm7
>      0x00007ffff6f1e5b3 <+83>:  paddd  0x1b464(%rip),%xmm13        #
> 0x7ffff6f39a20
>      0x00007ffff6f1e5bc <+92>:  add    $0x100,%rax
>      0x00007ffff6f1e5c2 <+98>:  movdqa 0x1b485(%rip),%xmm11        #
> 0x7ffff6f39a50
>      0x00007ffff6f1e5cb <+107>: pmovzxdq %xmm1,%xmm4
>      0x00007ffff6f1e5d0 <+112>: psrldq $0x8,%xmm1
>      0x00007ffff6f1e5d5 <+117>: pmovzxdq %xmm1,%xmm1
>      0x00007ffff6f1e5da <+122>: paddq  %xmm7,%xmm4
>      0x00007ffff6f1e5de <+126>: movdqa 0x1b489(%rip),%xmm10        #
> 0x7ffff6f39a70
>      0x00007ffff6f1e5e7 <+135>: paddq  %xmm7,%xmm1
>      0x00007ffff6f1e5eb <+139>: movdqa %xmm4,%xmm0
>      0x00007ffff6f1e5ef <+143>: movdqa 0x1b478(%rip),%xmm9        #
> 0x7ffff6f39a70
>      0x00007ffff6f1e5f8 <+152>: movdqa %xmm1,%xmm5
>      0x00007ffff6f1e5fc <+156>: psrlq  $0x20,%xmm0
>      0x00007ffff6f1e601 <+161>: shufps $0x88,%xmm1,%xmm4
>      0x00007ffff6f1e605 <+165>: movdqa 0x1b472(%rip),%xmm8        #
> 0x7ffff6f39a80
>      0x00007ffff6f1e60e <+174>: psrlq  $0x20,%xmm5
>      0x00007ffff6f1e613 <+179>: movdqa 0x1b465(%rip),%xmm7        #
> 0x7ffff6f39a80
>      0x00007ffff6f1e61b <+187>: shufps $0x88,%xmm5,%xmm0
>      0x00007ffff6f1e61f <+191>: pxor   %xmm4,%xmm0
>      0x00007ffff6f1e623 <+195>: pmulld %xmm3,%xmm0
>      0x00007ffff6f1e628 <+200>: paddd  %xmm2,%xmm0
>      0x00007ffff6f1e62c <+204>: movdqa %xmm0,%xmm1
>      0x00007ffff6f1e630 <+208>: pmovzxdq %xmm0,%xmm4
>      0x00007ffff6f1e635 <+213>: pmulld %xmm3,%xmm1
>      0x00007ffff6f1e63a <+218>: psrldq $0x8,%xmm0
>      0x00007ffff6f1e63f <+223>: pmovzxdq %xmm0,%xmm0
>      0x00007ffff6f1e644 <+228>: paddd  %xmm2,%xmm1
>   --Type <RET> for more, q to quit, c to continue without paging--
>      0x00007ffff6f1e648 <+232>: pmovzxdq %xmm1,%xmm5
>      0x00007ffff6f1e64d <+237>: psllq  $0x20,%xmm5
>      0x00007ffff6f1e652 <+242>: por    %xmm4,%xmm5
>      0x00007ffff6f1e656 <+246>: movdqa %xmm1,%xmm4
>      0x00007ffff6f1e65a <+250>: paddq  %xmm5,%xmm11
>      0x00007ffff6f1e65f <+255>: pmulld %xmm3,%xmm1
>      0x00007ffff6f1e664 <+260>: psrldq $0x8,%xmm4
>      0x00007ffff6f1e669 <+265>: pmovzxdq %xmm4,%xmm4
>      0x00007ffff6f1e66e <+270>: psllq  $0x20,%xmm4
>      0x00007ffff6f1e673 <+275>: paddd  %xmm2,%xmm1
>      0x00007ffff6f1e677 <+279>: por    %xmm0,%xmm4
>      0x00007ffff6f1e67b <+283>: movdqa %xmm5,%xmm0
>      0x00007ffff6f1e67f <+287>: psubq  %xmm14,%xmm0
>   => 0x00007ffff6f1e684 <+292>: pcmpgtq 0x1b423(%rip),%xmm0        #
> 0x7ffff6f39ab0
>      0x00007ffff6f1e68d <+301>: pblendvb %xmm0,%xmm5,%xmm11
>      0x00007ffff6f1e693 <+307>: movdqa %xmm4,%xmm0
>      0x00007ffff6f1e697 <+311>: movdqa 0x1b3b1(%rip),%xmm5        #
> 0x7ffff6f39a50
>      0x00007ffff6f1e69f <+319>: movq   %xmm11,-0x100(%rax)
>      0x00007ffff6f1e6a8 <+328>: psubq  %xmm14,%xmm0
>      0x00007ffff6f1e6ad <+333>: pextrq $0x1,%xmm11,-0xc0(%rax)
>      0x00007ffff6f1e6b8 <+344>: pcmpgtq 0x1b3ef(%rip),%xmm0        #
> 0x7ffff6f39ab0
>      0x00007ffff6f1e6c1 <+353>: paddq  %xmm4,%xmm5
>   ```
>
>   ProblemType: Crash
>   DistroRelease: Ubuntu 22.10
>   Package: gqrx-sdr 2.15.9-1
>   ProcVersionSignature: Ubuntu 5.19.0-31.32-generic 5.19.17
>   Uname: Linux 5.19.0-31-generic x86_64
>   NonfreeKernelModules: nvidia_modeset nvidia
>   ApportVersion: 2.23.1-0ubuntu3
>   Architecture: amd64
>   CasperMD5CheckResult: unknown
>   CurrentDesktop: i3
>   Date: Mon Mar  6 16:25:45 2023
>   ExecutablePath: /usr/bin/gqrx
>   ExecutableTimestamp: 1661386628
>   InstallationDate: Installed on 2022-01-05 (425 days ago)
>   InstallationMedia: Ubuntu 20.04.3 LTS "Focal Fossa" - Release amd64
> (20210819)
>   JournalErrors: -- No entries --
>   ProcCmdline: gqrx
>   ProcCwd: /home/garrett/Code/gqrx/build
>   ProcEnviron:
>    SHELL=/bin/bash
>    LANG=en_US.UTF-8
>    TERM=rxvt-unicode-256color
>    XDG_RUNTIME_DIR=<set>
>    PATH=(custom, user)
>   RebootRequiredPkgs: Error: path contained symlinks.
>   Signal: 4
>   SourcePackage: gqrx-sdr
>   StacktraceTop:
>    rte_srand () from /lib/x86_64-linux-gnu/librte_eal.so.22
>    ?? () from /lib/x86_64-linux-gnu/librte_eal.so.22
>    call_init (l=<optimized out>, argc=argc@entry=1, argv=argv@entry=0x7fff2573be68,
> env=env@entry=0x7fff2573be78) at ./elf/dl-init.c:70
>    call_init (env=0x7fff2573be78, argv=0x7fff2573be68, argc=1,
> l=<optimized out>) at ./elf/dl-init.c:33
>    _dl_init (main_map=0x7f7f8bd532e0, argc=1, argv=0x7fff2573be68,
> env=0x7fff2573be78) at ./elf/dl-init.c:117
>   Title: gqrx crashed with SIGILL in rte_srand()
>   UpgradeStatus: Upgraded to kinetic on 2022-12-28 (68 days ago)
>   UserGroups: adm cdrom dialout dip disk docker libvirt lpadmin lxd
> plugdev sambashare sudo wireshark
>   mtime.conffile..etc.apport.crashdb.conf: 2022-08-24T09:03:25.873541
>   separator:
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/dpdk/+bug/2009635/+subscriptions
>
>