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| author | Naohiro Aota <naohiro.aota@wdc.com> | 2017-09-08 17:48:55 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-10-05 09:41:47 +0200 |
| commit | 0efde43517a54007c4b19a72d9e3da8a0199074e (patch) | |
| tree | ae7de4e1d42732e83182864108b261615a4cdf7c /kernel/time/timer.c | |
| parent | 9a7d93dd2cadf532e5a7c490e05c55d44ea4e583 (diff) | |
btrfs: propagate error to btrfs_cmp_data_prepare caller
commit 78ad4ce014d025f41b8dde3a81876832ead643cf upstream.
btrfs_cmp_data_prepare() (almost) always returns 0 i.e. ignoring errors
from gather_extent_pages(). While the pages are freed by
btrfs_cmp_data_free(), cmp->num_pages still has > 0. Then,
btrfs_extent_same() try to access the already freed pages causing faults
(or violates PageLocked assertion).
This patch just return the error as is so that the caller stop the process.
Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Fixes: f441460202cb ("btrfs: fix deadlock with extent-same and readpage")
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/time/timer.c')
0 files changed, 0 insertions, 0 deletions