ethanwu 998ac6d21c btrfs: Take trans lock before access running trans in check_delayed_ref ...

In preivous patch:
Btrfs: kill trans in run_delalloc_nocow and btrfs_cross_ref_exist
We avoid starting btrfs transaction and get this information from
fs_info->running_transaction directly.

When accessing running_transaction in check_delayed_ref, there's a
chance that current transaction will be freed by commit transaction
after the NULL pointer check of running_transaction is passed.

After looking all the other places using fs_info->running_transaction,
they are either protected by trans_lock or holding the transactions.

Fix this by using trans_lock and increasing the use_count.

Fixes: e4c3b2dcd144 ("Btrfs: kill trans in run_delalloc_nocow and btrfs_cross_ref_exist")
CC: stable@vger.kernel.org # 4.14+
Signed-off-by: ethanwu <ethanwu@synology.com>
Signed-off-by: David Sterba <dsterba@suse.com>

2018-05-02 11:54:58 +02:00

..

tests

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acl.c

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async-thread.c

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async-thread.h

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backref.c

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backref.h

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btrfs_inode.h

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check-integrity.c

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check-integrity.h

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compression.c

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compression.h

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ctree.c

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ctree.h

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dedupe.h

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delayed-inode.c

btrfs: delayed-inode: Remove wrong qgroup meta reservation calls

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delayed-inode.h

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delayed-ref.c

btrfs: Fix race condition between delayed refs and blockgroup removal

2018-04-20 19:17:25 +02:00

delayed-ref.h

btrfs: Fix race condition between delayed refs and blockgroup removal

2018-04-20 19:17:25 +02:00

dev-replace.c

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dev-replace.h

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dir-item.c

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disk-io.c

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disk-io.h

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export.c

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export.h

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extent_io.c

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extent_io.h

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extent_map.c

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extent_map.h

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extent-tree.c

btrfs: Take trans lock before access running trans in check_delayed_ref

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file-item.c

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file.c

btrfs: Fix wrong btrfs_delalloc_release_extents parameter

2018-04-18 16:46:57 +02:00

free-space-cache.c

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free-space-cache.h

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free-space-tree.c

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free-space-tree.h

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inode-item.c

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inode-map.c

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inode-map.h

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inode.c

btrfs: fix unaligned access in readdir

2018-04-19 00:35:08 +02:00

ioctl.c

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Kconfig

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locking.c

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locking.h

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lzo.c

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Makefile

btrfs: Remove custom crc32c init code

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math.h

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ordered-data.c

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ordered-data.h

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orphan.c

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print-tree.c

btrfs: print-tree: debugging output enhancement

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print-tree.h

btrfs: print-tree: debugging output enhancement

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props.c

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props.h

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qgroup.c

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qgroup.h

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raid56.c

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raid56.h

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rcu-string.h

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reada.c

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ref-verify.c

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ref-verify.h

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relocation.c

btrfs: Fix wrong first_key parameter in replace_path

2018-04-26 13:21:04 +02:00

root-tree.c

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scrub.c

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send.c

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send.h

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struct-funcs.c

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super.c

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sysfs.c

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sysfs.h

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transaction.c

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transaction.h

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tree-checker.c

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tree-checker.h

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tree-defrag.c

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tree-log.c

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tree-log.h

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ulist.c

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ulist.h

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uuid-tree.c

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volumes.c

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volumes.h

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xattr.c

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xattr.h

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zlib.c

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zstd.c

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