From: Dongliang Mu <mudongliangabcd@xxxxxxxxx>
[ Upstream commit dc2f78e2d4cc844a1458653d57ce1b54d4a29f21 ]
Syzbot triggers two WARNs in f2fs_is_valid_blkaddr and
__is_bitmap_valid. For example, in f2fs_is_valid_blkaddr,
if type is DATA_GENERIC_ENHANCE or DATA_GENERIC_ENHANCE_READ,
it invokes WARN_ON if blkaddr is not in the right range.
The call trace is as follows:
f2fs_get_node_info+0x45f/0x1070
read_node_page+0x577/0x1190
__get_node_page.part.0+0x9e/0x10e0
__get_node_page
f2fs_get_node_page+0x109/0x180
do_read_inode
f2fs_iget+0x2a5/0x58b0
f2fs_fill_super+0x3b39/0x7ca0
Fix these two WARNs by replacing WARN_ON with dump_stack.
Reported-by: syzbot+763ae12a2ede1d99d4dc@xxxxxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Dongliang Mu <mudongliangabcd@xxxxxxxxx>
Reviewed-by: Chao Yu <chao@xxxxxxxxxx>
Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
fs/f2fs/checkpoint.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 909085a78f9c..71b1e93cbe0c 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -158,7 +158,7 @@ static bool __is_bitmap_valid(struct f2fs_sb_info *sbi, block_t blkaddr,
f2fs_err(sbi, "Inconsistent error blkaddr:%u, sit bitmap:%d",
blkaddr, exist);
set_sbi_flag(sbi, SBI_NEED_FSCK);
- WARN_ON(1);
+ dump_stack();
}
return exist;
}
@@ -196,7 +196,7 @@ bool f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi,
f2fs_warn(sbi, "access invalid blkaddr:%u",
blkaddr);
set_sbi_flag(sbi, SBI_NEED_FSCK);
- WARN_ON(1);
+ dump_stack();
return false;
} else {
return __is_bitmap_valid(sbi, blkaddr, type);
--
2.35.1
