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Date: Tue, 10 Aug 2021 19:30:34 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Благодаренко Артём <artem.blagodarenko@...il.com>, Denis <denis@...elsoft.com>, Theodore Tso <tytso@....edu>, stable@...nel.org Subject: [PATCH 4.19 40/54] ext4: fix potential htree corruption when growing large_dir directories From: Theodore Ts'o <tytso@....edu> commit 877ba3f729fd3d8ef0e29bc2a55e57cfa54b2e43 upstream. Commit b5776e7524af ("ext4: fix potential htree index checksum corruption) removed a required restart when multiple levels of index nodes need to be split. Fix this to avoid directory htree corruptions when using the large_dir feature. Cc: stable@...nel.org # v5.11 Cc: Благодаренко Артём <artem.blagodarenko@...il.com> Fixes: b5776e7524af ("ext4: fix potential htree index checksum corruption) Reported-by: Denis <denis@...elsoft.com> Signed-off-by: Theodore Ts'o <tytso@....edu> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- fs/ext4/namei.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -2317,7 +2317,7 @@ again: goto journal_error; err = ext4_handle_dirty_dx_node(handle, dir, frame->bh); - if (err) + if (restart || err) goto journal_error; } else { struct dx_root *dxroot;
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