[f2fs-dev] [Bug 219484] f2fs discard causes kernel NULL pointer dereferencing

[bugzilla-daemon--- via Linux-f2fs-devel <linux-f2fs-devel@lists.sourceforge.net>]

https://bugzilla.kernel.org/show_bug.cgi?id=219484

--- Comment #4 from Chao Yu (chao@kernel.org) ---
Do we have any chance to apply this and try to check whether it can fix this
bug?

From: Chao Yu <chao@kernel.org>

---
 fs/f2fs/segment.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 10ec69cbae68..86a22447b89b 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -1314,11 +1314,6 @@ static int __submit_discard_cmd(struct f2fs_sb_info
*sbi,
                unsigned long flags;
                bool last = true;

-               if (len > max_discard_blocks) {
-                       len = max_discard_blocks;
-                       last = false;
-               }
-
                (*issued)++;
                if (*issued == dpolicy->max_requests)
                        last = true;
-- 
2.40.1

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