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crash-utility / crash

Linux kernel crash utility
https://crash-utility.github.io
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Adding the zram decompression algorithm "lzo-rle" to support kernel versions >= 5.1. #172

Closed yulong-tang closed 9 months ago

yulong-tang commented 9 months ago

Port the improved decompression method for "lzo" in the kernel to support decompression of "lzorle". After the 5.1 version of the kernel, the default compression algorithm for zram was changed from "lzo" to "lzo-rle". the crash utility only supports decompression for "lzo", when parsing vmcore files that utilize zram compression, such as when using the gcore command to detach process core dump files, parsing cannot be completed successfully.

before: crash> gcore -v 0 1 gcore: WARNING: only the lzo compressor is supported gcore: WARNING: only the lzo compressor is supported gcore: WARNING: only the lzo compressor is supported gcore: WARNING: only the lzo compressor is supported after: crash> gcore -v 0 1 Saved core.1.init