From: Bernd Schubert <bs_lists@aakef.fastmail.fm>
To: dev@dpdk.org
Cc: Bernd Schubert <bschubert@ddn.com>
Subject: Re: SIGILL in rte_cpu_get_flag_enabled / RTE_CPUFLAG_RTM
Date: Fri, 22 Sep 2023 20:02:42 +0200 [thread overview]
Message-ID: <53f52296-93d5-45c0-b3e6-c200abfec298@aakef.fastmail.fm> (raw)
In-Reply-To: <089a8254-82e8-44a1-9641-4b6da6515dde@aakef.fastmail.fm>
>
> This already has been reported here
> https://inbox.dpdk.org/users/C7FF2508-D633-404E-95AF-5F604D8E8E4B@intel.com/t/
> but I don't see a solution there. It just ends up asking for the line
> numbers.
> Well, the line is
>
>
> __cpuid_count(feat->leaf, feat->subleaf,
> regs[RTE_REG_EAX], regs[RTE_REG_EBX],
> regs[RTE_REG_ECX], regs[RTE_REG_EDX]);
>
> /* check if the feature is enabled */
> return (regs[feat->reg] >> feat->bit) & 1; ====> line 173
>
>
> Maybe this should catch SIGILL?
>
Hmm, after disabling 2 flags in that function (fast workaround) it continues with
reflect_32bits (val=<optimized out>) at ../lib/net/rte_net_crc.c:96
96 if ((val & (1U << i)) != 0)
(gdb) bt
#0 reflect_32bits (val=<optimized out>) at ../lib/net/rte_net_crc.c:96
#1 crc32_eth_init_lut (poly=poly@entry=79764919, lut=lut@entry=0x7ffff70b9d40 <crc32_eth_lut>) at ../lib/net/rte_net_crc.c:109
#2 0x00007ffff3ffcc99 in rte_net_crc_scalar_init () at ../lib/net/rte_net_crc.c:137
#3 rte_net_crc_init () at ../lib/net/rte_net_crc.c:337
#4 0x00007ffff7fc947e in call_init (l=<optimized out>, argc=argc@entry=1, argv=argv@entry=0x7fffffffe078, env=env@entry=0x7fffffffe088)
at ./elf/dl-init.c:70
#5 0x00007ffff7fc9568 in call_init (env=0x7fffffffe088, argv=0x7fffffffe078, argc=1, l=<optimized out>) at ./elf/dl-init.c:33
#6 _dl_init (main_map=0x7ffff7ffe2e0, argc=1, argv=0x7fffffffe078, env=0x7fffffffe088) at ./elf/dl-init.c:117
#7 0x00007ffff7fe32ea in _dl_start_user () from /lib64/ld-linux-x86-64.so.2
#8 0x0000000000000001 in ?? ()
#9 0x00007fffffffe356 in ?? ()
#10 0x0000000000000000 in ?? ()
next prev parent reply other threads:[~2023-09-22 18:02 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-22 17:48 Bernd Schubert
2023-09-22 18:02 ` Bernd Schubert [this message]
2023-09-25 17:11 ` Bernd Schubert
2023-09-25 9:53 ` David Marchand
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