From: Josef Bacik <josef@toxicpanda.com>
To: linux-btrfs@vger.kernel.org, kernel-team@fb.com
Subject: [PATCH 1/4] btrfs: set fs_root = NULL on error
Date: Tue, 11 Feb 2020 16:40:39 -0500 [thread overview]
Message-ID: <20200211214042.4645-2-josef@toxicpanda.com> (raw)
In-Reply-To: <20200211214042.4645-1-josef@toxicpanda.com>
While running my error injection script I hit a panic when we tried to
clean up the fs_root when free'ing the fs_root. This is because
fs_info->fs_root == PTR_ERR(-EIO), which isn't great. Fix this by
setting fs_info->fs_root = NULL; if we fail to read the root.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
---
fs/btrfs/disk-io.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index eb441fa3711b..5b6140482cef 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -3260,6 +3260,7 @@ int __cold open_ctree(struct super_block *sb,
if (IS_ERR(fs_info->fs_root)) {
err = PTR_ERR(fs_info->fs_root);
btrfs_warn(fs_info, "failed to read fs tree: %d", err);
+ fs_info->fs_root = NULL;
goto fail_qgroup;
}
--
2.24.1
next prev parent reply other threads:[~2020-02-11 21:40 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-11 21:40 [PATCH 0/4] Error condition failure fixes Josef Bacik
2020-02-11 21:40 ` Josef Bacik [this message]
2020-02-12 0:55 ` [PATCH 1/4] btrfs: set fs_root = NULL on error Qu Wenruo
2020-02-13 10:05 ` Johannes Thumshirn
2020-02-13 10:48 ` Nikolay Borisov
2020-02-13 15:31 ` Josef Bacik
2020-02-13 15:32 ` Nikolay Borisov
2020-02-11 21:40 ` [PATCH 2/4] btrfs: do not check delayed items are empty for single trans cleanup Josef Bacik
2020-02-12 0:57 ` Qu Wenruo
2020-02-13 10:28 ` Nikolay Borisov
2020-02-13 11:15 ` Johannes Thumshirn
2020-02-11 21:40 ` [PATCH 3/4] btrfs: handle logged extent failure properly Josef Bacik
2020-02-12 0:58 ` Qu Wenruo
2020-02-13 10:26 ` Nikolay Borisov
2020-02-13 11:16 ` Johannes Thumshirn
2020-02-11 21:40 ` [PATCH 4/4] btrfs: fix bytes_may_use underflow in prealloc error condtition Josef Bacik
2020-02-12 1:00 ` Qu Wenruo
2020-02-13 10:17 ` Nikolay Borisov
2020-02-13 15:29 ` Josef Bacik
2020-02-13 15:47 [PATCH 0/4][v2] Error condition failure fixes Josef Bacik
2020-02-13 15:47 ` [PATCH 1/4] btrfs: set fs_root = NULL on error Josef Bacik
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