mirror_zfs/module
Serapheim Dimitropoulos 4acc36ed7c
Fix panic in dsl_process_sub_livelist for EINTR
= Issue

Recently we hit an assertion panic in `dsl_process_sub_livelist` while
exporting the spa and interrupting `bpobj_iterate_nofree`. In that case
`bpobj_iterate_nofree` stops mid-way returning an EINTR without clearing
the intermediate AVL tree that keeps track of the livelist entries it
has encountered so far. At that point the code has a VERIFY for the
number of elements of the AVL expecting it to be zero (which is not the
case for EINTR).

= Fix

Cleanup any intermediate state before destroying the AVL when
encountering EINTR. Also added a comment documenting the scenario where
the EINTR comes up. There is no need to do anything else for the calles
of `dsl_process_sub_livelist` as they already handle the EINTR case.

Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: Mark Maybee <mark.maybee@delphix.com>
Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Signed-off-by: Serapheim Dimitropoulos <serapheim@delphix.com>
Closes #13939
2022-09-29 09:39:48 -07:00
..
avl Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
icp Fix bad free in skein code 2022-09-27 12:36:58 -07:00
lua LUA: Fix CVE-2014-5461 2022-09-27 16:44:13 -07:00
nvpair Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
os zed: mark disks as REMOVED when they are removed 2022-09-28 09:48:46 -07:00
unicode Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
zcommon Enable relatime by default 2022-08-12 14:20:25 -07:00
zfs Fix panic in dsl_process_sub_livelist for EINTR 2022-09-29 09:39:48 -07:00
zstd Cleanup: Specify unsignedness on things that should not be signed 2022-09-27 16:42:41 -07:00
.gitignore FreeBSD: Ignore symlink to i386 includes 2022-08-02 16:34:23 -07:00
Kbuild.in Cleanup dead spa_boot code 2022-09-13 16:40:10 -07:00
Makefile.bsd Cleanup dead spa_boot code 2022-09-13 16:40:10 -07:00
Makefile.in autoconf: use include directives instead of recursing down lib 2022-05-10 10:18:11 -07:00