Alexander Motin 5ff2249fa5 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		2019-12-03 09:59:30 -08:00
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avl	Wrap Linux module macros	2019-11-01 10:41:03 -07:00
icp	Fix icp build on FreeBSD	2019-11-01 10:27:53 -07:00
lua	Move linux qsort def to platform header	2019-12-03 09:49:40 -08:00
nvpair	Restructure nvlist_nv_alloc to work on FreeBSD	2019-11-30 15:45:06 -08:00
os	Move zfs_cmd_t copyin/copyout to platform code	2019-12-02 10:08:27 -08:00
spl	OpenZFS restructuring - move platform specific sources	2019-09-06 11:26:26 -07:00
unicode	Wrap Linux module macros	2019-11-01 10:41:03 -07:00
zcommon	Increase allowed 'special_small_blocks' maximum value	2019-12-03 09:58:03 -08:00
zfs	Fix use-after-free in case of L2ARC prefetch failure	2019-12-03 09:59:30 -08:00
.gitignore	Adapt gitignore for modules	2019-12-02 13:23:47 -08:00
Makefile.in	module/Makefile.in: don't run xargs if empty	2019-10-08 10:10:23 -07:00