From 6dbc43b8670d03f7b87f7d3f056c3771b8865e48 Mon Sep 17 00:00:00 2001 From: Qu Wenruo Date: Fri, 3 Aug 2018 13:50:19 +0800 Subject: btrfs-progs: only warn if there are leaked extent buffers after transaction abort Another BUG_ON() during fuzz/003: ====== RUN MAYFAIL btrfs check --init-csum-tree tests/fuzz-tests/images/bko-161821.raw.restored [1/7] checking root items Fixed 0 roots. [2/7] checking extents parent transid verify failed on 4198400 wanted 14 found 1114126 parent transid verify failed on 4198400 wanted 14 found 1114126 Ignoring transid failure owner ref check failed [4198400 4096] repair deleting extent record: key [4198400,169,0] adding new tree backref on start 4198400 len 4096 parent 0 root 5 Repaired extent references for 4198400 ref mismatch on [4222976 4096] extent item 1, found 0 backref 4222976 root 7 not referenced back 0x5617f8ecf780 incorrect global backref count on 4222976 found 1 wanted 0 backpointer mismatch on [4222976 4096] owner ref check failed [4222976 4096] repair deleting extent record: key [4222976,169,0] Repaired extent references for 4222976 [3/7] checking free space cache [4/7] checking fs roots parent transid verify failed on 4198400 wanted 14 found 1114126 Ignoring transid failure Wrong generation of child node/leaf, wanted: 1114126, have: 14 root 5 missing its root dir, recreating parent transid verify failed on 4198400 wanted 14 found 1114126 Ignoring transid failure ERROR: child eb corrupted: parent bytenr=4222976 item=0 parent level=1 child level=2 ERROR: errors found in fs roots extent buffer leak: start 4222976 len 4096 extent_io.c:611: free_extent_buffer_internal: BUG_ON `eb->flags & EXTENT_DIRTY` triggered, value 1 failed (ignored, ret=134): btrfs check --init-csum-tree tests/fuzz-tests/images/bko-161821.raw.restored mayfail: returned code 134 (SIGABRT), not ignored test failed for case 003-multi-check-unmounted Since we're shifting to use btrfs_abort_transaction() in btrfs-progs, it will be more and more common to see dirty leaked eb. Instead of BUG_ON(), we only need to report it as a warning. Signed-off-by: Qu Wenruo Signed-off-by: David Sterba --- extent_io.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/extent_io.c b/extent_io.c index 19849269..b8510b0a 100644 --- a/extent_io.c +++ b/extent_io.c @@ -608,7 +608,11 @@ static void free_extent_buffer_internal(struct extent_buffer *eb, bool free_now) eb->refs--; BUG_ON(eb->refs < 0); if (eb->refs == 0) { - BUG_ON(eb->flags & EXTENT_DIRTY); + if (eb->flags & EXTENT_DIRTY) { + warning( + "dirty eb leak (aborted trans): start %llu len %u", + eb->start, eb->len); + } list_del_init(&eb->recow); if (eb->flags & EXTENT_BUFFER_DUMMY || free_now) free_extent_buffer_final(eb); -- cgit v1.2.3