iput() on sbi->node_inode can update sbi->stat_info
in the below context, if the f2fs_write_checkpoint()
has failed with error.
f2fs_balance_fs_bg+0x1ac/0x1ec
f2fs_write_node_pages+0x4c/0x260
do_writepages+0x80/0xbc
__writeback_single_inode+0xdc/0x4ac
writeback_single_inode+0x9c/0x144
write_inode_now+0xc4/0xec
iput+0x194/0x22c
f2fs_put_super+0x11c/0x1e8
generic_shutdown_super+0x70/0xf4
kill_block_super+0x2c/0x5c
kill_f2fs_super+0x44/0x50
deactivate_locked_super+0x60/0x8c
deactivate_super+0x68/0x74
cleanup_mnt+0x40/0x78
Fix this by moving f2fs_destroy_stats() further below iput().
Signed-off-by: Sahitya Tummala <stumm...@codeaurora.org>
---
fs/f2fs/super.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index e184ad4e..df41a3a 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -1058,9 +1058,6 @@ static void f2fs_put_super(struct super_block *sb)
f2fs_write_checkpoint(sbi, &cpc);
}
- /* f2fs_write_checkpoint can update stat informaion */
- f2fs_destroy_stats(sbi);
-
/*
* normally superblock is clean, so we need to release this.
* In addition, EIO will skip do checkpoint, we need this as well.
@@ -1080,6 +1077,12 @@ static void f2fs_put_super(struct super_block *sb)
iput(sbi->node_inode);
iput(sbi->meta_inode);
+ /*
+ * iput() can update stat information, if f2fs_write_checkpoint()
+ * above failed with error.
+ */
+ f2fs_destroy_stats(sbi);
+
/* destroy f2fs internal modules */
f2fs_destroy_node_manager(sbi);
f2fs_destroy_segment_manager(sbi);
--
Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux
Foundation Collaborative Project.
