From 7597d42a25332617a3dfe596758d780ec6c028d7 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 11 May 2026 09:16:50 +0200 Subject: [PATCH] befs: handle set_blocksize failures befs uses buffer_heads, which don't handle block size > PAGE_SIZE well. Without this, mounting we will hit the BUG_ON(offset >= folio_size(folio)); in folio_set_bh on the first __bread_gfp call. Signed-off-by: Christoph Hellwig Link: https://patch.msgid.link/20260511071701.2456211-6-hch@lst.de Signed-off-by: Christian Brauner (Amutable) --- fs/befs/linuxvfs.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c index c12caae9a967..ee0cbae521b9 100644 --- a/fs/befs/linuxvfs.c +++ b/fs/befs/linuxvfs.c @@ -860,7 +860,8 @@ befs_fill_super(struct super_block *sb, struct fs_context *fc) */ sb->s_magic = BEFS_SUPER_MAGIC; /* Set real blocksize of fs */ - sb_set_blocksize(sb, (ulong) befs_sb->block_size); + if (!sb_set_blocksize(sb, (ulong) befs_sb->block_size)) + goto unacquire_priv_sbp; sb->s_op = &befs_sops; sb->s_export_op = &befs_export_operations; sb->s_time_min = 0;