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From: Zhao Mengmeng <zhaomzhao@126.com>
To: syzbot+f8c98a50c323635be65d@syzkaller.appspotmail.com
Cc: kent.overstreet@linux.dev, linux-bcachefs@vger.kernel.org,
	linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [bcachefs?] UBSAN: shift-out-of-bounds in bch2_stripe_to_text
Date: Fri, 27 Sep 2024 11:39:31 +0800	[thread overview]
Message-ID: <ff3f13ee-2356-4731-8534-5813800f3757@126.com> (raw)
In-Reply-To: <66f4dcd2.050a0220.211276.003a.GAE@google.com>

[-- Attachment #1: Type: text/plain, Size: 88 bytes --]

#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 1ec6d097897a

[-- Attachment #2: test.patch --]
[-- Type: text/x-patch, Size: 520 bytes --]

diff --git a/fs/bcachefs/ec.c b/fs/bcachefs/ec.c
index 141a4c63142f..2d5cd9d837f2 100644
--- a/fs/bcachefs/ec.c
+++ b/fs/bcachefs/ec.c
@@ -144,7 +144,7 @@ void bch2_stripe_to_text(struct printbuf *out, struct bch_fs *c,
 		   nr_data,
 		   s.nr_redundant);
 	bch2_prt_csum_type(out, s.csum_type);
-	prt_printf(out, " gran %u", 1U << s.csum_granularity_bits);
+	prt_printf(out, " gran 1<<%u", s.csum_granularity_bits);
 
 	for (unsigned i = 0; i < s.nr_blocks; i++) {
 		const struct bch_extent_ptr *ptr = sp->ptrs + i;

  parent reply	other threads:[~2024-09-27  3:55 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-09-26  4:02 syzbot
2024-09-27  2:53 ` Zhao Mengmeng
2024-09-27  3:15   ` syzbot
2024-09-27  3:39 ` Zhao Mengmeng [this message]
2024-09-27  4:00   ` syzbot
2024-09-27  4:43 ` Zhao Mengmeng
2024-09-27  5:04   ` syzbot
2024-10-08  8:12 ` Zhao Mengmeng
2024-10-08  8:29   ` syzbot
2024-10-08  8:14 ` Zhao Mengmeng
2024-10-08  8:50   ` syzbot
2024-10-09  3:27 ` Zhao Mengmeng
2024-10-09  3:50   ` syzbot

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