[casr-afl] Possible bug in CASR report generation for cases when ASAN hard_rss_limit_mb limit is reached

[niksankin]

When running casr-afl on testcases that cause the tested program to trigger ASAN hard rss limit, I got this error:

~$ ASAN_OPTIONS="detect_leaks=0:abort_on_error=1:symbolize=0:hard_rss_limit_mb=100"  ./casr-afl -i ./in -o ./out -- /some/program @@
11:28:47 [INFO] Analyzing 3 files...
11:28:47 [INFO] Generating CASR reports...
11:28:47 [INFO] Using 3 threads
11:28:48 [INFO] Deduplicating CASR reports...
Error: Error: All 3 CASR reports are corrupted

It may be some bug in ASAN log parser that is triggered by ASAN logs in this form:

==2446==AddressSanitizer: hard rss limit exhausted (100Mb vs 103Mb)
==2446==Process memory map follows:
        0x00007fff7000-0x00008fff7000
        0x00008fff7000-0x02008fff7000
        0x02008fff7000-0x10007fff8000
        0x55877f410000-0x55877f4b7000   /some/program
        0x55877f4b7000-0x55877fd20000   /some/program
        0x55877fd20000-0x55877fe26000   /some/program
        0x55877fe26000-0x55877fe29000   /some/program
        0x55877fe29000-0x55877feb1000   /some/program
        0x55877feb1000-0x5587800b2000
        0x600000000000-0x640000000000
        0x640000000000-0x640000003000
        0x7fc4f551e000-0x7fc4f7531000
        0x7fc4f7531000-0x7fc4f7d31000
        0x7fc4f7d31000-0x7fc4f809d000
        0x7fc4f809d000-0x7fc4f80a0000   /usr/lib64/libz.so.1.2.11
        0x7fc4f80a0000-0x7fc4f80ae000   /usr/lib64/libz.so.1.2.11
        0x7fc4f80ae000-0x7fc4f80b4000   /usr/lib64/libz.so.1.2.11
        0x7fc4f80b4000-0x7fc4f80b5000   /usr/lib64/libz.so.1.2.11
        0x7fc4f80b5000-0x7fc4f80b6000   /usr/lib64/libz.so.1.2.11
        0x7fc4f80b6000-0x7fc4f80b7000
        0x7fc4f80b7000-0x7fc4f80c4000   /usr/lib64/libm.so.6
        0x7fc4f80c4000-0x7fc4f8134000   /usr/lib64/libm.so.6
        0x7fc4f8134000-0x7fc4f8190000   /usr/lib64/libm.so.6
        0x7fc4f8190000-0x7fc4f8191000   /usr/lib64/libm.so.6
        0x7fc4f8191000-0x7fc4f8192000   /usr/lib64/libm.so.6
        0x7fc4f8192000-0x7fc4f822b000   /usr/lib64/libstdc++.so.6.0.29
        0x7fc4f822b000-0x7fc4f8337000   /usr/lib64/libstdc++.so.6.0.29
        0x7fc4f8337000-0x7fc4f83aa000   /usr/lib64/libstdc++.so.6.0.29
        0x7fc4f83aa000-0x7fc4f83b7000   /usr/lib64/libstdc++.so.6.0.29
        0x7fc4f83b7000-0x7fc4f83b8000   /usr/lib64/libstdc++.so.6.0.29
        0x7fc4f83b8000-0x7fc4f83bb000
        0x7fc4f83bb000-0x7fc4f83e3000   /usr/lib64/libc.so.6
        0x7fc4f83e3000-0x7fc4f8558000   /usr/lib64/libc.so.6
        0x7fc4f8558000-0x7fc4f85b0000   /usr/lib64/libc.so.6
        0x7fc4f85b0000-0x7fc4f85b1000   /usr/lib64/libc.so.6
        0x7fc4f85b1000-0x7fc4f85b5000   /usr/lib64/libc.so.6
        0x7fc4f85b5000-0x7fc4f85b7000   /usr/lib64/libc.so.6
        0x7fc4f85b7000-0x7fc4f85c4000
        0x7fc4f85c4000-0x7fc4f85c7000   /usr/lib64/libgcc_s-11-20231218.so.1
        0x7fc4f85c7000-0x7fc4f85d9000   /usr/lib64/libgcc_s-11-20231218.so.1
        0x7fc4f85d9000-0x7fc4f85dc000   /usr/lib64/libgcc_s-11-20231218.so.1
        0x7fc4f85dc000-0x7fc4f85dd000   /usr/lib64/libgcc_s-11-20231218.so.1
        0x7fc4f85dd000-0x7fc4f85de000   /usr/lib64/libgcc_s-11-20231218.so.1
        0x7fc4f85de000-0x7fc4f85df000   /usr/lib64/libgcc_s-11-20231218.so.1
        0x7fc4f85df000-0x7fc4f85e0000   /usr/lib64/libprotobuf-c.so.1.0.0
        0x7fc4f85e0000-0x7fc4f85e6000   /usr/lib64/libprotobuf-c.so.1.0.0
        0x7fc4f85e6000-0x7fc4f85e7000   /usr/lib64/libprotobuf-c.so.1.0.0
        0x7fc4f85e7000-0x7fc4f85e8000   /usr/lib64/libprotobuf-c.so.1.0.0
        0x7fc4f85e8000-0x7fc4f85e9000   /usr/lib64/libprotobuf-c.so.1.0.0
        0x7fc4f85e9000-0x7fc4f85ea000   /usr/lib64/libprotobuf-c.so.1.0.0
        0x7fc4f85ea000-0x7fc4f85ec000
        0x7fc4f85ec000-0x7fc4f85f1000   /usr/lib64/libnghttp2.so.14.20.1
        0x7fc4f85f1000-0x7fc4f8606000   /usr/lib64/libnghttp2.so.14.20.1
        0x7fc4f8606000-0x7fc4f8612000   /usr/lib64/libnghttp2.so.14.20.1
        0x7fc4f8612000-0x7fc4f8615000   /usr/lib64/libnghttp2.so.14.20.1
        0x7fc4f8615000-0x7fc4f8616000   /usr/lib64/libnghttp2.so.14.20.1
        0x7fc4f8616000-0x7fc4f86c3000   /usr/lib64/libcrypto.so.3.0.7
        0x7fc4f86c3000-0x7fc4f891f000   /usr/lib64/libcrypto.so.3.0.7
        0x7fc4f891f000-0x7fc4f89ec000   /usr/lib64/libcrypto.so.3.0.7
        0x7fc4f89ec000-0x7fc4f89ed000   /usr/lib64/libcrypto.so.3.0.7
        0x7fc4f89ed000-0x7fc4f8a43000   /usr/lib64/libcrypto.so.3.0.7
        0x7fc4f8a43000-0x7fc4f8a46000   /usr/lib64/libcrypto.so.3.0.7
        0x7fc4f8a46000-0x7fc4f8a49000
        0x7fc4f8a49000-0x7fc4f8aa3000   /usr/lib64/libpython3.9.so.1.0
        0x7fc4f8aa3000-0x7fc4f8c58000   /usr/lib64/libpython3.9.so.1.0
        0x7fc4f8c58000-0x7fc4f8d4c000   /usr/lib64/libpython3.9.so.1.0
        0x7fc4f8d4c000-0x7fc4f8d4d000   /usr/lib64/libpython3.9.so.1.0
        0x7fc4f8d4d000-0x7fc4f8d53000   /usr/lib64/libpython3.9.so.1.0
        0x7fc4f8d53000-0x7fc4f8d8a000   /usr/lib64/libpython3.9.so.1.0
        0x7fc4f8d8a000-0x7fc4f8dac000
        0x7fc4f8dac000-0x7fc4f8dba000   /usr/lib64/libevent-2.1.so.7.0.1
        0x7fc4f8dba000-0x7fc4f8dee000   /usr/lib64/libevent-2.1.so.7.0.1
        0x7fc4f8dee000-0x7fc4f8e01000   /usr/lib64/libevent-2.1.so.7.0.1
        0x7fc4f8e01000-0x7fc4f8e02000   /usr/lib64/libevent-2.1.so.7.0.1
        0x7fc4f8e02000-0x7fc4f8e04000   /usr/lib64/libevent-2.1.so.7.0.1
        0x7fc4f8e04000-0x7fc4f8e05000   /usr/lib64/libevent-2.1.so.7.0.1
        0x7fc4f8e05000-0x7fc4f8e23000   /usr/lib64/libssl.so.3.0.7
        0x7fc4f8e23000-0x7fc4f8e80000   /usr/lib64/libssl.so.3.0.7
        0x7fc4f8e80000-0x7fc4f8e9d000   /usr/lib64/libssl.so.3.0.7
        0x7fc4f8e9d000-0x7fc4f8ea7000   /usr/lib64/libssl.so.3.0.7
        0x7fc4f8ea7000-0x7fc4f8eab000   /usr/lib64/libssl.so.3.0.7
        0x7fc4f8eab000-0x7fc4f8ecf000   /usr/lib64/libasan.so.6.0.0
        0x7fc4f8ecf000-0x7fc4f8fa6000   /usr/lib64/libasan.so.6.0.0
        0x7fc4f8fa6000-0x7fc4f8fd8000   /usr/lib64/libasan.so.6.0.0
        0x7fc4f8fd8000-0x7fc4f8fd9000   /usr/lib64/libasan.so.6.0.0
        0x7fc4f8fd9000-0x7fc4f8fdd000   /usr/lib64/libasan.so.6.0.0
        0x7fc4f8fdd000-0x7fc4f8fe0000   /usr/lib64/libasan.so.6.0.0
        0x7fc4f8fe0000-0x7fc4f9896000
        0x7fc4f9896000-0x7fc4f989a000
        0x7fc4f989a000-0x7fc4f989c000   /usr/lib64/ld-linux-x86-64.so.2
        0x7fc4f989c000-0x7fc4f98c2000   /usr/lib64/ld-linux-x86-64.so.2
        0x7fc4f98c2000-0x7fc4f98cd000   /usr/lib64/ld-linux-x86-64.so.2
        0x7fc4f98cd000-0x7fc4f98ce000
        0x7fc4f98ce000-0x7fc4f98d0000   /usr/lib64/ld-linux-x86-64.so.2
        0x7fc4f98d0000-0x7fc4f98d2000   /usr/lib64/ld-linux-x86-64.so.2
        0x7ffe68b20000-0x7ffe68b41000   [stack]
        0x7ffe68ba2000-0x7ffe68ba6000   [vvar]
        0x7ffe68ba6000-0x7ffe68ba8000   [vdso]
        0xffffffffff600000-0xffffffffff601000   [vsyscall]
==2446==End of process memory map.
Aborted

[SweetVishnya]

AFAIK, AFL++ does not support handling of hard_rss_limit

[niksankin]

hard_rss_limit_mb exported manually to program that is tested under AFL, because I struggle by the same problem as described here: https://afl-1.readthedocs.io/en/latest/notes_for_asan.html. hard_rss_limit_mb is the only currently available way for me to solve the described problem in a moment. That's how I get such crashes in my AFL working dir. This is a bit extravagant usecase, but is still a usecase I think

[SweetVishnya]

You may try asking in Awesome Fuzzing Discord channel. However, last time I asked about hard_rss_limit compatibility with AFL++, I was told that there's no such support and AFL++ just uses system oom killer.

[niksankin]

that's right, AFL uses ulimit when launched with '-m' option. In my setup I can not use '-m' option, so I exporting hard_rss_limit_mb manually. Another possible option is to add cgroups support into AFL, but there is no opportunity for me to implement that right now. So exporting hard_rss_limit_mb by hand is an only possible option for me right now

[SweetVishnya]

btw, there's no stacktrace in your output, so, casr has nothing to analyze

[niksankin]

I suggest that these crashes may be treated as oom cases (or as some special asan oom cases) and clearly reported by cli utilities in their log messages

[SweetVishnya]

That should've been handled here and there. I have no clue why that failed in your case...

[SweetVishnya]

Can you run casr-san directly on crash input and provide its output?

[niksankin]

~$ ASAN_OPTIONS="detect_leaks=0:abort_on_error=1:symbolize=0:hard_rss_limit_mb=100" ./casr-san --stdout -- /some/program /some/crashfile
Error: Out of memory: hard_rss_limit_mb exhausted

[niksankin]

seems like casr-san handling this case correctly, but casr-afl fails to deduplicate reports and puts all .casrep files to clerr dir, leaving oom dir empty

[niksankin]

example of such corrupted report (uname, binary name and cmd are replaced):

{
  "Date": "2025-03-31T14:00:36.933649+00:00",
  "Uname": "Some Uname",
  "OS": "",
  "OSRelease": "",
  "Architecture": "",
  "ExecutablePath": "/some/program",
  "ProcEnviron": [
    "ASAN_OPTIONS=detect_leaks=0:abort_on_error=1:symbolize=0:hard_rss_limit_mb=100",
    "PWD=/data/casr-x86_64-unknown-linux-gnu",
    "container=podman",
    "HOME=/root",
    "TERM=xterm",
    "SHLVL=1",
    "which_declare=declare -f",
    "PATH=/root/.local/bin:/root/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
    "OLDPWD=/data",
    "BASH_FUNC_which%%=() {  ( alias;\n eval ${which_declare} ) | /usr/bin/which --tty-only --read-alias --read-functions --show-tilde --show-dot $@\n}",
    "_=./casr-afl"
  ],
  "ProcCmdline": "/some/program /some/crashfile",
  "Stdin": "",
  "ProcStatus": [],
  "ProcMaps": [
    "          Start Addr           End Addr       Size     Offset objfile",
    "          0x7fff7000         0x8fff7000 0x10000000        0x0 ",
    "          0x8fff7000      0x2008fff7000 0x20000000000        0x0 ",
    "       0x2008fff7000     0x10007fff8000 0xdfff0001000        0x0 ",
    "      0x555555554000     0x5555555fb000    0xa7000        0x0 /some/program",
    "      0x5555555fb000     0x555555e64000   0x869000    0xa7000 /some/program",
    "      0x555555e64000     0x555555f6a000   0x106000   0x910000 /some/program",
    "      0x555555f6a000     0x555555f6d000     0x3000   0xa15000 /some/program",
    "      0x555555f6d000     0x555555ff5000    0x88000   0xa18000 /some/program",
    "      0x555555ff5000     0x5555561f6000   0x201000        0x0 [heap]",
    "      0x600000000000     0x602000000000 0x2000000000        0x0 ",
    "      0x602000000000     0x602000020000    0x20000        0x0 ",
    "      0x602000020000     0x602e00000000 0xdfffe0000        0x0 ",
    "      0x602e00000000     0x602e00010000    0x10000        0x0 ",
    "      0x602e00010000     0x603000000000 0x1ffff0000        0x0 ",
    "      0x603000000000     0x603000040000    0x40000        0x0 ",
    "      0x603000040000     0x603e00000000 0xdfffc0000        0x0 ",
    "      0x603e00000000     0x603e00010000    0x10000        0x0 ",
    "      0x603e00010000     0x604000000000 0x1ffff0000        0x0 ",
    "      0x604000000000     0x604000010000    0x10000        0x0 ",
    "      0x604000010000     0x604e00000000 0xdffff0000        0x0 ",
    "      0x604e00000000     0x604e00010000    0x10000        0x0 ",
    "      0x604e00010000     0x606000000000 0x11ffff0000        0x0 ",
    "      0x606000000000     0x606000010000    0x10000        0x0 ",
    "      0x606000010000     0x606e00000000 0xdffff0000        0x0 ",
    "      0x606e00000000     0x606e00010000    0x10000        0x0 ",
    "      0x606e00010000     0x607000000000 0x1ffff0000        0x0 ",
    "      0x607000000000     0x607000010000    0x10000        0x0 ",
    "      0x607000010000     0x607e00000000 0xdffff0000        0x0 ",
    "      0x607e00000000     0x607e00010000    0x10000        0x0 ",
    "      0x607e00010000     0x608000000000 0x1ffff0000        0x0 ",
    "      0x608000000000     0x608000010000    0x10000        0x0 ",
    "      0x608000010000     0x608e00000000 0xdffff0000        0x0 ",
    "      0x608e00000000     0x608e00010000    0x10000        0x0 ",
    "      0x608e00010000     0x60b000000000 0x21ffff0000        0x0 ",
    "      0x60b000000000     0x60b000010000    0x10000        0x0 ",
    "      0x60b000010000     0x60be00000000 0xdffff0000        0x0 ",
    "      0x60be00000000     0x60be00010000    0x10000        0x0 ",
    "      0x60be00010000     0x60c000000000 0x1ffff0000        0x0 ",
    "      0x60c000000000     0x60c000020000    0x20000        0x0 ",
    "      0x60c000020000     0x60ce00000000 0xdfffe0000        0x0 ",
    "      0x60ce00000000     0x60ce00010000    0x10000        0x0 ",
    "      0x60ce00010000     0x60d000000000 0x1ffff0000        0x0 ",
    "      0x60d000000000     0x60d000010000    0x10000        0x0 ",
    "      0x60d000010000     0x60de00000000 0xdffff0000        0x0 ",
    "      0x60de00000000     0x60de00010000    0x10000        0x0 ",
    "      0x60de00010000     0x60e000000000 0x1ffff0000        0x0 ",
    "      0x60e000000000     0x60e000010000    0x10000        0x0 ",
    "      0x60e000010000     0x60ee00000000 0xdffff0000        0x0 ",
    "      0x60ee00000000     0x60ee00010000    0x10000        0x0 ",
    "      0x60ee00010000     0x60f000000000 0x1ffff0000        0x0 ",
    "      0x60f000000000     0x60f000010000    0x10000        0x0 ",
    "      0x60f000010000     0x60fe00000000 0xdffff0000        0x0 ",
    "      0x60fe00000000     0x60fe00010000    0x10000        0x0 ",
    "      0x60fe00010000     0x610000000000 0x1ffff0000        0x0 ",
    "      0x610000000000     0x610000010000    0x10000        0x0 ",
    "      0x610000010000     0x610e00000000 0xdffff0000        0x0 ",
    "      0x610e00000000     0x610e00010000    0x10000        0x0 ",
    "      0x610e00010000     0x611000000000 0x1ffff0000        0x0 ",
    "      0x611000000000     0x611000020000    0x20000        0x0 ",
    "      0x611000020000     0x611e00000000 0xdfffe0000        0x0 ",
    "      0x611e00000000     0x611e00010000    0x10000        0x0 ",
    "      0x611e00010000     0x612000000000 0x1ffff0000        0x0 ",
    "      0x612000000000     0x612000010000    0x10000        0x0 ",
    "      0x612000010000     0x612e00000000 0xdffff0000        0x0 ",
    "      0x612e00000000     0x612e00010000    0x10000        0x0 ",
    "      0x612e00010000     0x613000000000 0x1ffff0000        0x0 ",
    "      0x613000000000     0x613000010000    0x10000        0x0 ",
    "      0x613000010000     0x613e00000000 0xdffff0000        0x0 ",
    "      0x613e00000000     0x613e00010000    0x10000        0x0 ",
    "      0x613e00010000     0x614000000000 0x1ffff0000        0x0 ",
    "      0x614000000000     0x614000010000    0x10000        0x0 ",
    "      0x614000010000     0x614e00000000 0xdffff0000        0x0 ",
    "      0x614e00000000     0x614e00010000    0x10000        0x0 ",
    "      0x614e00010000     0x615000000000 0x1ffff0000        0x0 ",
    "      0x615000000000     0x615000010000    0x10000        0x0 ",
    "      0x615000010000     0x615e00000000 0xdffff0000        0x0 ",
    "      0x615e00000000     0x615e00010000    0x10000        0x0 ",
    "      0x615e00010000     0x616000000000 0x1ffff0000        0x0 ",
    "      0x616000000000     0x616000010000    0x10000        0x0 ",
    "      0x616000010000     0x616e00000000 0xdffff0000        0x0 ",
    "      0x616e00000000     0x616e00010000    0x10000        0x0 ",
    "      0x616e00010000     0x617000000000 0x1ffff0000        0x0 ",
    "      0x617000000000     0x617000010000    0x10000        0x0 ",
    "      0x617000010000     0x617e00000000 0xdffff0000        0x0 ",
    "      0x617e00000000     0x617e00010000    0x10000        0x0 ",
    "      0x617e00010000     0x619000000000 0x11ffff0000        0x0 ",
    "      0x619000000000     0x619000010000    0x10000        0x0 ",
    "      0x619000010000     0x619e00000000 0xdffff0000        0x0 ",
    "      0x619e00000000     0x619e00010000    0x10000        0x0 ",
    "      0x619e00010000     0x61b000000000 0x11ffff0000        0x0 ",
    "      0x61b000000000     0x61b000010000    0x10000        0x0 ",
    "      0x61b000010000     0x61be00000000 0xdffff0000        0x0 ",
    "      0x61be00000000     0x61be00010000    0x10000        0x0 ",
    "      0x61be00010000     0x61c000000000 0x1ffff0000        0x0 ",
    "      0x61c000000000     0x61c000010000    0x10000        0x0 ",
    "      0x61c000010000     0x61ce00000000 0xdffff0000        0x0 ",
    "      0x61ce00000000     0x61ce00010000    0x10000        0x0 ",
    "      0x61ce00010000     0x61d000000000 0x1ffff0000        0x0 ",
    "      0x61d000000000     0x61d000040000    0x40000        0x0 ",
    "      0x61d000040000     0x61de00000000 0xdfffc0000        0x0 ",
    "      0x61de00000000     0x61de00010000    0x10000        0x0 ",
    "      0x61de00010000     0x61e000000000 0x1ffff0000        0x0 ",
    "      0x61e000000000     0x61e000050000    0x50000        0x0 ",
    "      0x61e000050000     0x61ee00000000 0xdfffb0000        0x0 ",
    "      0x61ee00000000     0x61ee00010000    0x10000        0x0 ",
    "      0x61ee00010000     0x61f000000000 0x1ffff0000        0x0 ",
    "      0x61f000000000     0x61f000010000    0x10000        0x0 ",
    "      0x61f000010000     0x61fe00000000 0xdffff0000        0x0 ",
    "      0x61fe00000000     0x61fe00010000    0x10000        0x0 ",
    "      0x61fe00010000     0x621000000000 0x11ffff0000        0x0 ",
    "      0x621000000000     0x621000010000    0x10000        0x0 ",
    "      0x621000010000     0x621e00000000 0xdffff0000        0x0 ",
    "      0x621e00000000     0x621e00010000    0x10000        0x0 ",
    "      0x621e00010000     0x622000000000 0x1ffff0000        0x0 ",
    "      0x622000000000     0x622000010000    0x10000        0x0 ",
    "      0x622000010000     0x622e00000000 0xdffff0000        0x0 ",
    "      0x622e00000000     0x622e00010000    0x10000        0x0 ",
    "      0x622e00010000     0x624000000000 0x11ffff0000        0x0 ",
    "      0x624000000000     0x624000010000    0x10000        0x0 ",
    "      0x624000010000     0x624e00000000 0xdffff0000        0x0 ",
    "      0x624e00000000     0x624e00010000    0x10000        0x0 ",
    "      0x624e00010000     0x625000000000 0x1ffff0000        0x0 ",
    "      0x625000000000     0x625000010000    0x10000        0x0 ",
    "      0x625000010000     0x625e00000000 0xdffff0000        0x0 ",
    "      0x625e00000000     0x625e00010000    0x10000        0x0 ",
    "      0x625e00010000     0x629000000000 0x31ffff0000        0x0 ",
    "      0x629000000000     0x629000030000    0x30000        0x0 ",
    "      0x629000030000     0x629e00000000 0xdfffd0000        0x0 ",
    "      0x629e00000000     0x629e00010000    0x10000        0x0 ",
    "      0x629e00010000     0x62d000000000 0x31ffff0000        0x0 ",
    "      0x62d000000000     0x62d000010000    0x10000        0x0 ",
    "      0x62d000010000     0x62de00000000 0xdffff0000        0x0 ",
    "      0x62de00000000     0x62de00010000    0x10000        0x0 ",
    "      0x62de00010000     0x631000000000 0x31ffff0000        0x0 ",
    "      0x631000000000     0x631000020000    0x20000        0x0 ",
    "      0x631000020000     0x631e00000000 0xdfffe0000        0x0 ",
    "      0x631e00000000     0x631e00010000    0x10000        0x0 ",
    "      0x631e00010000     0x640000000000 0xe1ffff0000        0x0 ",
    "      0x640000000000     0x640000003000     0x3000        0x0 ",
    "      0x7ffff33d0000     0x7ffff3434000    0x64000        0x0 ",
    "      0x7ffff3434000     0x7ffff3435000     0x1000        0x0 ",
    "      0x7ffff3435000     0x7ffff5c78000  0x2843000        0x0 ",
    "      0x7ffff5c78000     0x7ffff6458000   0x7e0000        0x0 ",
    "      0x7ffff6458000     0x7ffff67c4000   0x36c000        0x0 ",
    "      0x7ffff67c4000     0x7ffff67c7000     0x3000        0x0 /usr/lib64/libz.so.1.2.11",
    "      0x7ffff67c7000     0x7ffff67d5000     0xe000     0x3000 /usr/lib64/libz.so.1.2.11",
    "      0x7ffff67d5000     0x7ffff67db000     0x6000    0x11000 /usr/lib64/libz.so.1.2.11",
    "      0x7ffff67db000     0x7ffff67dc000     0x1000    0x17000 /usr/lib64/libz.so.1.2.11",
    "      0x7ffff67dc000     0x7ffff67dd000     0x1000    0x17000 /usr/lib64/libz.so.1.2.11",
    "      0x7ffff67dd000     0x7ffff67de000     0x1000        0x0 ",
    "      0x7ffff67de000     0x7ffff67eb000     0xd000        0x0 /usr/lib64/libm.so.6",
    "      0x7ffff67eb000     0x7ffff685b000    0x70000     0xd000 /usr/lib64/libm.so.6",
    "      0x7ffff685b000     0x7ffff68b7000    0x5c000    0x7d000 /usr/lib64/libm.so.6",
    "      0x7ffff68b7000     0x7ffff68b8000     0x1000    0xd8000 /usr/lib64/libm.so.6",
    "      0x7ffff68b8000     0x7ffff68b9000     0x1000    0xd9000 /usr/lib64/libm.so.6",
    "      0x7ffff68b9000     0x7ffff6952000    0x99000        0x0 /usr/lib64/libstdc++.so.6.0.29",
    "      0x7ffff6952000     0x7ffff6a5e000   0x10c000    0x99000 /usr/lib64/libstdc++.so.6.0.29",
    "      0x7ffff6a5e000     0x7ffff6ad1000    0x73000   0x1a5000 /usr/lib64/libstdc++.so.6.0.29",
    "      0x7ffff6ad1000     0x7ffff6ade000     0xd000   0x217000 /usr/lib64/libstdc++.so.6.0.29",
    "      0x7ffff6ade000     0x7ffff6adf000     0x1000   0x224000 /usr/lib64/libstdc++.so.6.0.29",
    "      0x7ffff6adf000     0x7ffff6ae2000     0x3000        0x0 ",
    "      0x7ffff6ae2000     0x7ffff6b0a000    0x28000        0x0 /usr/lib64/libc.so.6",
    "      0x7ffff6b0a000     0x7ffff6c7f000   0x175000    0x28000 /usr/lib64/libc.so.6",
    "      0x7ffff6c7f000     0x7ffff6cd7000    0x58000   0x19d000 /usr/lib64/libc.so.6",
    "      0x7ffff6cd7000     0x7ffff6cd8000     0x1000   0x1f5000 /usr/lib64/libc.so.6",
    "      0x7ffff6cd8000     0x7ffff6cdc000     0x4000   0x1f5000 /usr/lib64/libc.so.6",
    "      0x7ffff6cdc000     0x7ffff6cde000     0x2000   0x1f9000 /usr/lib64/libc.so.6",
    "      0x7ffff6cde000     0x7ffff6ceb000     0xd000        0x0 ",
    "      0x7ffff6ceb000     0x7ffff6cee000     0x3000        0x0 /usr/lib64/libgcc_s-11-20231218.so.1",
    "      0x7ffff6cee000     0x7ffff6d00000    0x12000     0x3000 /usr/lib64/libgcc_s-11-20231218.so.1",
    "      0x7ffff6d00000     0x7ffff6d03000     0x3000    0x15000 /usr/lib64/libgcc_s-11-20231218.so.1",
    "      0x7ffff6d03000     0x7ffff6d04000     0x1000    0x18000 /usr/lib64/libgcc_s-11-20231218.so.1",
    "      0x7ffff6d04000     0x7ffff6d05000     0x1000    0x18000 /usr/lib64/libgcc_s-11-20231218.so.1",
    "      0x7ffff6d05000     0x7ffff6d06000     0x1000    0x19000 /usr/lib64/libgcc_s-11-20231218.so.1",
    "      0x7ffff6d06000     0x7ffff6d07000     0x1000        0x0 /usr/lib64/libprotobuf-c.so.1.0.0",
    "      0x7ffff6d07000     0x7ffff6d0d000     0x6000     0x1000 /usr/lib64/libprotobuf-c.so.1.0.0",
    "      0x7ffff6d0d000     0x7ffff6d0e000     0x1000     0x7000 /usr/lib64/libprotobuf-c.so.1.0.0",
    "      0x7ffff6d0e000     0x7ffff6d0f000     0x1000     0x8000 /usr/lib64/libprotobuf-c.so.1.0.0",
    "      0x7ffff6d0f000     0x7ffff6d10000     0x1000     0x8000 /usr/lib64/libprotobuf-c.so.1.0.0",
    "      0x7ffff6d10000     0x7ffff6d11000     0x1000     0x9000 /usr/lib64/libprotobuf-c.so.1.0.0",
    "      0x7ffff6d11000     0x7ffff6d13000     0x2000        0x0 ",
    "      0x7ffff6d13000     0x7ffff6d18000     0x5000        0x0 /usr/lib64/libnghttp2.so.14.20.1",
    "      0x7ffff6d18000     0x7ffff6d2d000    0x15000     0x5000 /usr/lib64/libnghttp2.so.14.20.1",
    "      0x7ffff6d2d000     0x7ffff6d39000     0xc000    0x1a000 /usr/lib64/libnghttp2.so.14.20.1",
    "      0x7ffff6d39000     0x7ffff6d3c000     0x3000    0x25000 /usr/lib64/libnghttp2.so.14.20.1",
    "      0x7ffff6d3c000     0x7ffff6d3d000     0x1000    0x28000 /usr/lib64/libnghttp2.so.14.20.1",
    "      0x7ffff6d3d000     0x7ffff6dea000    0xad000        0x0 /usr/lib64/libcrypto.so.3.0.7",
    "      0x7ffff6dea000     0x7ffff7046000   0x25c000    0xad000 /usr/lib64/libcrypto.so.3.0.7",
    "      0x7ffff7046000     0x7ffff7113000    0xcd000   0x309000 /usr/lib64/libcrypto.so.3.0.7",
    "      0x7ffff7113000     0x7ffff7114000     0x1000   0x3d6000 /usr/lib64/libcrypto.so.3.0.7",
    "      0x7ffff7114000     0x7ffff716a000    0x56000   0x3d6000 /usr/lib64/libcrypto.so.3.0.7",
    "      0x7ffff716a000     0x7ffff716d000     0x3000   0x42c000 /usr/lib64/libcrypto.so.3.0.7",
    "      0x7ffff716d000     0x7ffff7170000     0x3000        0x0 ",
    "      0x7ffff7170000     0x7ffff71ca000    0x5a000        0x0 /usr/lib64/libpython3.9.so.1.0",
    "      0x7ffff71ca000     0x7ffff737f000   0x1b5000    0x5a000 /usr/lib64/libpython3.9.so.1.0",
    "      0x7ffff737f000     0x7ffff7473000    0xf4000   0x20f000 /usr/lib64/libpython3.9.so.1.0",
    "      0x7ffff7473000     0x7ffff7474000     0x1000   0x303000 /usr/lib64/libpython3.9.so.1.0",
    "      0x7ffff7474000     0x7ffff747a000     0x6000   0x303000 /usr/lib64/libpython3.9.so.1.0",
    "      0x7ffff747a000     0x7ffff74b1000    0x37000   0x309000 /usr/lib64/libpython3.9.so.1.0",
    "      0x7ffff74b1000     0x7ffff74d3000    0x22000        0x0 ",
    "      0x7ffff74d3000     0x7ffff74e1000     0xe000        0x0 /usr/lib64/libevent-2.1.so.7.0.1",
    "      0x7ffff74e1000     0x7ffff7515000    0x34000     0xe000 /usr/lib64/libevent-2.1.so.7.0.1",
    "      0x7ffff7515000     0x7ffff7528000    0x13000    0x42000 /usr/lib64/libevent-2.1.so.7.0.1",
    "      0x7ffff7528000     0x7ffff7529000     0x1000    0x55000 /usr/lib64/libevent-2.1.so.7.0.1",
    "      0x7ffff7529000     0x7ffff752b000     0x2000    0x55000 /usr/lib64/libevent-2.1.so.7.0.1",
    "      0x7ffff752b000     0x7ffff752c000     0x1000    0x57000 /usr/lib64/libevent-2.1.so.7.0.1",
    "      0x7ffff752c000     0x7ffff754a000    0x1e000        0x0 /usr/lib64/libssl.so.3.0.7",
    "      0x7ffff754a000     0x7ffff75a7000    0x5d000    0x1e000 /usr/lib64/libssl.so.3.0.7",
    "      0x7ffff75a7000     0x7ffff75c4000    0x1d000    0x7b000 /usr/lib64/libssl.so.3.0.7",
    "      0x7ffff75c4000     0x7ffff75ce000     0xa000    0x97000 /usr/lib64/libssl.so.3.0.7",
    "      0x7ffff75ce000     0x7ffff75d2000     0x4000    0xa1000 /usr/lib64/libssl.so.3.0.7",
    "      0x7ffff75d2000     0x7ffff75f6000    0x24000        0x0 /usr/lib64/libasan.so.6.0.0",
    "      0x7ffff75f6000     0x7ffff76cd000    0xd7000    0x24000 /usr/lib64/libasan.so.6.0.0",
    "      0x7ffff76cd000     0x7ffff76ff000    0x32000    0xfb000 /usr/lib64/libasan.so.6.0.0",
    "      0x7ffff76ff000     0x7ffff7700000     0x1000   0x12d000 /usr/lib64/libasan.so.6.0.0",
    "      0x7ffff7700000     0x7ffff7704000     0x4000   0x12d000 /usr/lib64/libasan.so.6.0.0",
    "      0x7ffff7704000     0x7ffff7707000     0x3000   0x131000 /usr/lib64/libasan.so.6.0.0",
    "      0x7ffff7707000     0x7ffff7fbd000   0x8b6000        0x0 ",
    "      0x7ffff7fbd000     0x7ffff7fc1000     0x4000        0x0 ",
    "      0x7ffff7fc1000     0x7ffff7fc5000     0x4000        0x0 [vvar]",
    "      0x7ffff7fc5000     0x7ffff7fc7000     0x2000        0x0 [vdso]",
    "      0x7ffff7fc7000     0x7ffff7fc9000     0x2000        0x0 /usr/lib64/ld-linux-x86-64.so.2",
    "      0x7ffff7fc9000     0x7ffff7fef000    0x26000     0x2000 /usr/lib64/ld-linux-x86-64.so.2",
    "      0x7ffff7fef000     0x7ffff7ffa000     0xb000    0x28000 /usr/lib64/ld-linux-x86-64.so.2",
    "      0x7ffff7ffa000     0x7ffff7ffb000     0x1000        0x0 ",
    "      0x7ffff7ffb000     0x7ffff7ffd000     0x2000    0x33000 /usr/lib64/ld-linux-x86-64.so.2",
    "      0x7ffff7ffd000     0x7ffff7fff000     0x2000    0x35000 /usr/lib64/ld-linux-x86-64.so.2",
    "      0x7ffffffde000     0x7ffffffff000    0x21000        0x0 [stack]",
    "  0xffffffffff600000 0xffffffffff601000     0x1000        0x0 [vsyscall]"
  ],
  "ProcFiles": [],
  "NetworkConnections": [],
  "CrashSeverity": {
    "Type": "UNDEFINED",
    "ShortDescription": "Undefined",
    "Description": "Undefined class",
    "Explanation": "There is no execution class for this type of exception"
  },
  "Stacktrace": [
    "#0  0x00007ffff6bb6075 in clock_nanosleep@GLIBC_2.2.5 () from /lib64/libc.so.6",
    "#1  0x00007ffff6bbac87 in nanosleep () from /lib64/libc.so.6",
    "#2  0x00007ffff6be6b29 in usleep () from /lib64/libc.so.6",
    "#3  0x00007ffff769932a in __sanitizer::BackgroundThread(void*) () from /lib64/libasan.so.6",
    "#4  0x00007ffff6b6bc02 in start_thread () from /lib64/libc.so.6",
    "#5  0x00007ffff6befed4 in clone () from /lib64/libc.so.6"
  ],
  "Registers": {
    "r14": 140737332558128,
    "k6": 0,
    "rip": 140737332863093,
    "r9": 140737283049024,
    "k3": 0,
    "rdi": 0,
    "k5": 0,
    "fs": 0,
    "ds": 0,
    "rdx": 140737283046608,
    "r15": 0,
    "k0": 32768,
    "rsi": 0,
    "k2": 0,
    "es": 0,
    "k1": 67109393,
    "rbx": 0,
    "r12": 100,
    "r13": 0,
    "rax": 18446744073709551100,
    "r11": 659,
    "r8": 0,
    "gs": 0,
    "k4": 0,
    "rsp": 140737283046544,
    "rbp": 0,
    "r10": 0,
    "k7": 0,
    "rcx": 140737332863093,
    "eflags": 659,
    "ss": 43,
    "cs": 51
  },
  "Disassembly": [
    "=> 0x7ffff6bb6075 :\tmov    edi,r8d",
    "   0x7ffff6bb6078 :\tmov    QWORD PTR [rsp],rax",
    "   0x7ffff6bb607c :\tcall   0x7ffff6b680c0 ",
    "   0x7ffff6bb6081 :\tmov    rax,QWORD PTR [rsp]",
    "   0x7ffff6bb6085 :\tadd    rsp,0x28",
    "   0x7ffff6bb6089 :\tneg    eax",
    "   0x7ffff6bb608b :\tret    ",
    "   0x7ffff6bb608c :\tnop    DWORD PTR [rax+0x0]",
    "   0x7ffff6bb6090 :\tmov    eax,0x16",
    "   0x7ffff6bb6095 :\tret    ",
    "   0x7ffff6bb6096:\tnop    WORD PTR cs:[rax+rax*1+0x0]",
    "   0x7ffff6bb60a0 :\tpush   r15",
    "   0x7ffff6bb60a2 :\tpush   r14",
    "   0x7ffff6bb60a4 :\tpush   r13",
    "   0x7ffff6bb60a6 :\tpush   r12",
    "   0x7ffff6bb60a8 :\tlea    r12,[rip+0x1279f1]        # 0x7ffff6cddaa0 "
  ],
  "Package": "",
  "PackageVersion": "",
  "PackageArchitecture": "",
  "PackageDescription": "",
  "AsanReport": [],
  "UbsanReport": [],
  "PythonReport": [],
  "GoReport": [],
  "JavaReport": [],
  "RustReport": [],
  "JsReport": [],
  "CSharpReport": [],
  "CrashLine": "",
  "Source": []
}

[SweetVishnya]

btw, -- /some/program @@ option is for running under casr-gdb, to override fuzz target run argv, also, use --ignore-cmdline

[SweetVishnya]

Try rerunning the same casr-afl command with an additional --ignore-cmdline option.

[SweetVishnya]

You may, also, try running with -l debug. Thus, you'll see all executed programs.