Suricata 6.0.3 - MIPS64 Openwrt - SIGILL

Building 6.0.3 from source in OpenWrt, I’m receiving an SIGILL Illegal Instruction
Compiled with rust 1.57 tuple mips64-openwrt-linux-musl (cloned from mips64-unknown-linux-muslabi64).

10/12/2021 -- 07:17:46 - <Debug> - Entering ... >>
10/12/2021 -- 07:17:46 - <Debug> - LIBHTP default config: 0xfff1d06030
10/12/2021 -- 07:17:46 - <Debug> - LIBHTP default: personality = IDS
10/12/2021 -- 07:17:46 - <Debug> - LIBHTP default: personality = IDS
10/12/2021 -- 07:17:46 - <Debug> - LIBHTP default: personality=IDS (2)
10/12/2021 -- 07:17:46 - <Debug> - LIBHTP personality set to IDS
Illegal instruction
grommish@DESKTOP-AW:~/openwrt$ ./scripts/remote-gdb build_dir/target-mips64_octeonplus_64_musl/suricata-6.0.3/ipkg-mips64_octeonplus/suricata6/usr/bin/suricata
Using target mips64_octeonplus_64 (musl, )
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Reading symbols from build_dir/target-mips64_octeonplus_64_musl/suricata-6.0.3/ipkg-mips64_octeonplus/suricata6/usr/bin/suricata...
warning: Missing auto-load script at offset 0 in section .debug_gdb_scripts
of file /home/grommish/openwrt/build_dir/target-mips64_octeonplus_64_musl/suricata-6.0.3/ipkg-mips64_octeonplus/suricata6/usr/bin/suricata.
Use `info auto-load python-scripts [REGEXP]' to list them.
0x000000fff7f57100 in _dlstart ()
   from /home/grommish/openwrt/scripts/../staging_dir/target-mips64_octeonplus_64_musl/root-octeon/lib/
(gdb) bt
#0  0x000000fff7f57100 in _dlstart ()
   from /home/grommish/openwrt/scripts/../staging_dir/target-mips64_octeonplus_64_musl/root-octeon/lib/
#1  0x0000000000000000 in ?? ()
Backtrace stopped: frame did not save the PC
(gdb) run -vvvv -c /etc/suricata/suricata.yaml -i eth0
The program being debugged has been started already.
Start it from the beginning? (y or n) y
Starting program: /home/grommish/openwrt/build_dir/target-mips64_octeonplus_64_musl/suricata-6.0.3/ipkg-mips64_octeonplus/suricata6/usr/bin/suricata -vvvv -c /etc/suricata/suricata.yaml -i eth0

Program received signal SIGILL, Illegal instruction.
0x000000aaab5e0fb8 in compiler_builtins::float::mul::__muldf3 ()
(gdb) bt
#0  0x000000aaab5e0fb8 in compiler_builtins::float::mul::__muldf3 ()
#1  0x000000aaab5e0914 in __muldf3 ()
#2  0x000000aaaaf35f44 in ParseSizeString (size=<optimized out>, res=0xffffffd8c8) at util-misc.c:138
#3  0x000000aaaaf3629c in ParseSizeStringU32 (size=<optimized out>, res=0xaaaba481d0 <cfglist+48>) at util-misc.c:190
#4  0x000000aaaadbb6bc in HTPConfigParseParameters (tree=0xfff7902db0, s=0xfff79613b0, cfg_prec=0xaaaba481a0 <cfglist>)
    at app-layer-htp.c:2561
#5  HTPConfigParseParameters (cfg_prec=0xaaaba481a0 <cfglist>, s=0xfff79613b0, tree=0xfff7902db0)
    at app-layer-htp.c:2495
#6  0x000000aaaadbf520 in HTPConfigure () at app-layer-htp.c:2873
#7  0x000000aaaadbfb54 in RegisterHTPParsers () at app-layer-htp.c:3172
#8  0x000000aaaadca090 in AppLayerParserRegisterProtocolParsers () at app-layer-parser.c:1601
#9  0x000000aaaad99f28 in AppLayerSetup () at app-layer.c:846
#10 0x000000aaaaefa5e0 in PostConfLoadedSetup (suri=0xaaaba5dbc0 <suricata>) at suricata.c:2509
#11 PostConfLoadedSetup (suri=0xaaaba5dbc0 <suricata>) at suricata.c:2453
#12 0x000000aaaaefbab0 in SuricataMain (argc=<optimized out>, argv=<optimized out>) at suricata.c:2794
#13 0x000000aaaad94f44 in main (argc=<optimized out>, argv=<optimized out>) at main.c:22
(gdb) x/i $pc
=> 0xaaab5e0fb8 <_ZN17compiler_builtins5float3mul8__muldf317hc5658e15f13ba524E>:        dmfc1   a4,$f12

dmfc1 is a valid MIPS command for DMFC1 Doubleword Move from Floating Point (pg 196,

Everything is being build -msoft-float, but I’m seeing Suricata trying to link -mhard-float

/home/grommish/openwrt/staging_dir/toolchain-mips64_octeonplus_64_gcc-11.2.0_musl/lib/gcc/mips64-openwrt-linux-musl/11.2.0/../../../../mips64-openwrt-linux-musl/bin/ld: warning: suricata uses -msoft-float (set by /home/grommish/openwrt/staging_dir/toolchain-mips64_octeonplus_64_gcc-11.2.0_musl/lib/gcc/mips64-openwrt-linux-musl/11.2.0/../../../../mips64-openwrt-linux-musl/lib/Scrt1.o), ../rust/target/mips64-openwrt-linux-musl/debug/libsuricata.a(object-94eba9f9c40e2aad.object.2f68f6ad-cgu.3.rcgu.o) uses -mhard-float

Suggestions? Is Suricata setting hard-float somewhere in-code?

Appreciate any suggestions!

Build log below
suricata_build.log (1.4 MB)

We don’t set -msoft-float or -mhard-float anywhere, so not sure where this is set. I suspect cargo controls this for our Rust code.