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Change History

In the Linux kernel, the following vulnerability has been resolved:

blk-mq: make sure active queue usage is held for bio_integrity_prep()

blk_integrity_unregister() can come if queue usage counter isn't held
for one bio with integrity prepared, so this request may be completed with
calling profile->complete_fn, then kernel panic.

Another constraint is that bio_integrity_prep() needs to be called
before bio merge.

Fix the issue by:

- call bio_integrity_prep() with one queue usage counter gra

kernel.org https://git.kernel.org/stable/c/b0077e269f6c152e807fdac90b58caf012cdbaab [No types assigned]

kernel.org https://git.kernel.org/stable/c/b5c8e0ff76d10f6bf70a7237678f27c20cf59bc9 [No types assigned]

kernel.org https://git.kernel.org/stable/c/b80056bd75a16e4550873ecefe12bc8fd190b1cf [No types assigned]

kernel.org https://git.kernel.org/stable/c/e9c309ded295b7f8849097d71ae231456ca79f78 [No types assigned]