mirror_zfs

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Alexander Motin 388ef045b2 Fix use-after-free in case of L2ARC prefetch failure

In case L2ARC read failed, l2arc_read_done() creates _different_ ZIO
to read data from the original storage device.  Unfortunately pointer
to the failed ZIO remains in hdr->b_l1hdr.b_acb->acb_zio_head, and if
some other read try to bump the ZIO priority, it will crash.

The problem is reproducible by corrupting L2ARC content and reading
some data with prefetch if l2arc_noprefetch tunable is changed to 0.
With the default setting the issue is probably not reproducible now.

Reviewed-by: Tom Caputi <tcaputi@datto.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Alexander Motin <mav@FreeBSD.org>
Sponsored-By: iXsystems, Inc.
Closes #9648

2020-01-22 13:49:05 -08:00

avl

Fix typos in module/

2020-01-22 13:48:59 -08:00

icp

Linux 5.0 compat: SIMD compatibility

2020-01-22 13:49:01 -08:00

lua

Fix typos in module/

2020-01-22 13:48:59 -08:00

nvpair

Fix typos in module/