From c919330dd57835970b37676d377de3eaaea2c1e9 Mon Sep 17 00:00:00 2001 From: Eric Biggers Date: Fri, 12 Jan 2024 16:57:47 -0800 Subject: f2fs: fix double free of f2fs_sb_info kill_f2fs_super() is called even if f2fs_fill_super() fails. f2fs_fill_super() frees the struct f2fs_sb_info, so it must set sb->s_fs_info to NULL to prevent it from being freed again. Fixes: 275dca4630c1 ("f2fs: move release of block devices to after kill_block_super()") Reported-by: Closes: https://lore.kernel.org/lkml/0000000000006cb174060ec34502@google.com Reviewed-by: Chao Yu Link: https://lore.kernel.org/linux-f2fs-devel/20240113005747.38887-1-ebiggers@kernel.org Signed-off-by: Eric Biggers --- fs/f2fs/super.c | 1 + 1 file changed, 1 insertion(+) (limited to 'fs/f2fs') diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index d00d21a8b53a..d45ab0992ae5 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -4880,6 +4880,7 @@ free_sbi: if (sbi->s_chksum_driver) crypto_free_shash(sbi->s_chksum_driver); kfree(sbi); + sb->s_fs_info = NULL; /* give only one another chance */ if (retry_cnt > 0 && skip_recovery) { -- cgit v1.2.3