Brian Behlendorf 5f6d0b6f5a Handle block pointers with a corrupt logical size ... The general strategy used by ZFS to verify that blocks are valid is to checksum everything. This has the advantage of being extremely robust and generically applicable regardless of the contents of the block. If a blocks checksum is valid then its contents are trusted by the higher layers. This system works exceptionally well as long as bad data is never written with a valid checksum. If this does somehow occur due to a software bug or a memory bit-flip on a non-ECC system it may result in kernel panic. One such place where this could occur is if somehow the logical size stored in a block pointer exceeds the maximum block size. This will result in an attempt to allocate a buffer greater than the maximum block size causing a system panic. To prevent this from happening the arc_read() function has been updated to detect this specific case. If a block pointer with an invalid logical size is passed it will treat the block as if it contained a checksum error. Signed-off-by: Tim Chase <tim@chase2k.com> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #2678		2014-10-23 09:20:52 -07:00
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avl	Add module versioning	2013-12-06 09:34:41 -08:00
nvpair	Fix nvlist 'Bus Error' for Sparc	2014-01-09 15:50:15 -08:00
unicode	cstyle: Resolve C style issues	2013-12-18 16:46:35 -08:00
zcommon	Implement -t option to zpool create for temporary pool names	2014-09-30 10:46:59 -07:00
zfs	Handle block pointers with a corrupt logical size	2014-10-23 09:20:52 -07:00
zpios	Update code to use misc_register()/misc_deregister()	2014-10-17 14:58:44 -07:00
.gitignore	gitignore: anchor entries at their respective directory	2013-04-02 10:50:17 -07:00
Makefile.in	Add KMODDIR to install target	2013-03-06 15:46:40 -08:00