From: Christoph Hellwig <hch@lst.de>
Date: Mon, 11 May 2026 07:16:53 +0000 (+0200)
Subject: minix: handle set_blocksize failures
X-Git-Url: http://git.ipfire.org/gitweb/index.cgi?a=commitdiff_plain;h=38a03dc2bc71e7e0746cdb9ef5e9947f72470c67;p=thirdparty%2Fkernel%2Flinux.git

minix: handle set_blocksize failures

minix 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 <hch@lst.de>
Link: https://patch.msgid.link/20260511071701.2456211-9-hch@lst.de
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
---

diff --git a/fs/minix/inode.c b/fs/minix/inode.c
index 9c6bac2489077..03a69b13950db 100644
--- a/fs/minix/inode.c
+++ b/fs/minix/inode.c
@@ -292,7 +292,8 @@ static int minix_fill_super(struct super_block *s, struct fs_context *fc)
 		sbi->s_namelen = 60;
 		sbi->s_version = MINIX_V3;
 		sbi->s_mount_state = MINIX_VALID_FS;
-		sb_set_blocksize(s, m3s->s_blocksize);
+		if (!sb_set_blocksize(s, m3s->s_blocksize))
+			goto out;
 		s->s_max_links = MINIX2_LINK_MAX;
 	} else
 		goto out_no_fs;