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xdp-tools: fix XDP dns log stack smashing error

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commit f938e63dc6b2cd8a271bb4aa58d8371f4a9fa94c
Author: Vincent Li <vincent.mc.li@gmail.com>
Date:   Sat Jan 11 10:55:23 2025 -0800

    xdp-dns: fix XDP dns log stack smashing error

    gdb --args xdp_dns_log /sys/fs/bpf/xdp-tailcall/dns_ringbuf

    result in backtrace:

    (gdb) bt
     0x00007ffff7d5fa80 in ?? () from /lib64/libc.so.6
     0x00007ffff7d0be1c in raise () from /lib64/libc.so.6
     0x00007ffff7cf49fc in abort () from /lib64/libc.so.6
     0x00007ffff7d50ff0 in ?? () from /lib64/libc.so.6
     0x00007ffff7de32d4 in __fortify_fail () from /lib64/libc.so.6
     0x00007ffff7de42b0 in __stack_chk_fail () from /lib64/libc.so.6
     0x000000012000f248 in handle_event ()
     0x00007ffff7eca0fc in ?? () from /usr/lib64/libbpf.so.1
     0x00007ffff7eca8c8 in ring_buffer.poll () from /usr/lib64/libbpf.so.1
     0x000000012000372c in main ()

    Paste the gdb backtrace in ChatGPT and ChatGPT suggested the fix

Signed-off-by: Vincent Li <vincent.mc.li@gmail.com>
This commit is contained in:
Vincent Li
2025-01-11 11:05:21 -08:00
parent b4ffafc531
commit 43dd019fb3
1 changed files with 1 additions and 1 deletions
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lfs/xdp-tools
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@@ -41,7 +41,7 @@ objects = $(DL_FILE)
$(DL_FILE) = $(DL_FROM)/$(DL_FILE)
$(DL_FILE)_BLAKE2 = 69cf5ca38bbe3a2fdd5a121a04766dc2b8dcb1c6259409756a83e6cbb927a19def6804d9ef17e6279e66bfd85f4d34e6582be28f54efa6dc12b2864b52dc4437
$(DL_FILE)_BLAKE2 = 250a6795cc025796d88c7114d022c7c16b1e77045d6373e1dd75398101c090812438c3b4dce25cf3bc2635eb5af3a6bcdca62a5a4f39856032e909b608ef402b
install : $(TARGET)