As on x86-64 and other architectures, the boot kernel on parisc (vmlinuz and bzImage) contains a full compressed copy of the final kernel executable (vmlinux.bin.gz), which one should be able to extract with the extract-vmlinux script. But on parisc extracting the kernel with extract-vmlinux fails. Currently the script first checks if the given file is an ELF file (which is true on parisc) and if so returns it. Thus on parisc we unexpectedly get back the vmlinuz boot file instead of the uncompressed vmlinux image. This patch fixes this issue by reverting the logic. It now first tries to find a compression signature in the given file and if that fails it checks the file itself as fallback.
Showing the changes to scripts/extract-vmlinux (1 of 1 file). Show all
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| @@ -48,9 +48,6 @@ fi · 47 unmodified lines | ||
| 48 | 48 | tmp=$(mktemp /tmp/vmlinux-XXX) |
| 49 | 49 | trap "rm -f $tmp" 0 |
| 50 | 50 | |
| 51 | −# Initial attempt for uncompressed images or objects: | |
| 52 | −check_vmlinux $img | |
| 53 | − | |
| 54 | 51 | # That didn't work, so retry after decompression. |
| 55 | 52 | try_decompress '\037\213\010' xy gunzip |
| 56 | 53 | try_decompress '\3757zXZ\000' abcde unxz |
| @@ -60,5 +57,8 @@ try_decompress '\211\114\132' xy 'lzop -d' · 3 unmodified lines | ||
| 60 | 57 | try_decompress '\002!L\030' xxx 'lz4 -d' |
| 61 | 58 | try_decompress '(\265/\375' xxx unzstd |
| 62 | 59 | |
| 60 | +# Finally check for uncompressed images or objects: | |
| 61 | +check_vmlinux $img | |
| 62 | + | |
| 63 | 63 | # Bail out: |
| 64 | 64 | echo "$me: Cannot find vmlinux." >&2 |