[f2fs-dev] [Bug 220575] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000

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

https://bugzilla.kernel.org/show_bug.cgi?id=220575

--- Comment #5 from Chao Yu (chao@kernel.org) ---
If this is reproducible, could you check whether we're suffer panic in
f2fs_submit_page_bio()? if it is, could you please have a try w/ below fix:

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 82ae31b8ecc4..959614de878f 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -716,7 +716,7 @@ int f2fs_submit_page_bio(struct f2fs_io_info *fio)
                wbc_account_cgroup_owner(fio->io_wbc, fio_folio, PAGE_SIZE);

        inc_page_count(fio->sbi, is_read_io(fio->op) ?
-                       __read_io_type(data_folio) : WB_DATA_TYPE(fio->folio,
false));
+                       __read_io_type(data_folio) : WB_DATA_TYPE(data_folio,
false));

        if (is_read_io(bio_op(bio)))
                f2fs_submit_read_bio(fio->sbi, bio, fio->type);

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