Public bug reported:
fsck.minix (version V2) crashes when recovering a directory containing a
high number of files (e.g., 9000 dummy files).
fsck.minix wrongly determines when a block is pointed by a triple
indirect pointer, in the following line (in map_block2 function):
if (blknr >= 256 * 256) // this should be blknr <= 256 * 256
This error leads to a negative block number which leads to a wrong
memory access and to a segmentation fault.
I have attached a patch that fixes the problem. I can provide a sample
disk that exercises the error.
** Affects: util-linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: fsck.minix segfault v2
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https://bugs.launchpad.net/bugs/899243
Title:
[fsck.minix ] segfault while recovering directory with lots of files
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