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Device removal of indirect vdev panics the kernel

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This commit fixes a NULL pointer dereference triggered in
spa_vdev_remove_top_check() by trying to "zpool remove" an indirect
vdev.

Reviewed-by: Matt Ahrens <matt@delphix.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: loli10K <ezomori.nozomu@gmail.com>
Closes #9327
This commit is contained in:
loli10K
2019-09-16 19:46:59 +02:00
committed by Tony Hutter
parent b8bd3ec2af
commit 444df1051c
4 changed files with 65 additions and 2 deletions
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module/zfs/vdev_removal.c
+4
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@@ -22,6 +22,7 @@
/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2011, 2019 by Delphix. All rights reserved.
* Copyright (c) 2019, loli10K <ezomori.nozomu@gmail.com>. All rights reserved.
*/
#include <sys/zfs_context.h>
@@ -1936,6 +1937,9 @@ spa_vdev_remove_top_check(vdev_t *vd)
if (vd != vd->vdev_top)
return (SET_ERROR(ENOTSUP));
if (!vdev_is_concrete(vd))
return (SET_ERROR(ENOTSUP));
if (!spa_feature_is_enabled(spa, SPA_FEATURE_DEVICE_REMOVAL))
return (SET_ERROR(ENOTSUP));