Messages in this thread | | | Date | Fri, 27 May 2022 11:21:44 -0400 | From | "Theodore Ts'o" <> | Subject | Re: [PATCH -next] ext4: Fix warning in ext4_da_release_space |
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On Fri, May 27, 2022 at 05:10:43PM +0800, yebin wrote: > > Maybe you can run syzkaller with log as follows :
Oh, so this was something that was found using Syzkaller. Was this using the public syzkaller; if so, can you provide a link the Syzkaller report?
If this was a from privately run syzkaller instance, was there a C reproducer? It appears that this was from a fuzzed instance, and it's painful enoguh to extract the file system image from the C reproducer. I have no idea how to extract the file system image from a Syzkaller reproducer.
In any case, it sounds like this was triggered from a maliciously corrupted / fuzzed image. Can this warning be triggered from a consistent file system, or does it require a corrupted extent tree?
- Ted
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