[Backport v3.7-branch] fs: ext2: Fix nbytes_to_read calculation in ext2_inode_read() #84011
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Fix incorrect nbytes_to_read calculation in ext2_inode_read() function. Previously nbytes_to_read was decremented by read value which caused incorrect calculation of bytes to read in subsequent iterations. Now nbytes_to_read is decremented by to_read value which represents the actual number of bytes read in current iteration. This fixes potential data corruption issues when reading files from ext2 filesystem. Signed-off-by: Chen Shu <[email protected]> (cherry picked from commit 5a5f05b)
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Jan 15, 2025
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Backport 5a5f05b from #83572.
Fixes #83625