linux-kernel - Re: [syzbot] Re: [syzbot] [ocfs2?] kernel BUG in ocfs2

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Message-ID: <0000000000005431d1061fc486fd@google.com>
Date: Thu, 15 Aug 2024 20:26:27 -0700
From: syzbot <syzbot+5bdd4953bc58c8fbd6eb@...kaller.appspotmail.com>
To: linux-kernel@...r.kernel.org
Subject: Re: [syzbot] Re: [syzbot] [ocfs2?] kernel BUG in ocfs2_iget

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Subject: Re: [syzbot] [ocfs2?] kernel BUG in ocfs2_iget
Author: lizhi.xu@...driver.com

clean dirty for the release inode, stop to worker wb it again.

#syz test: upstream d07b43284ab3

diff --git a/fs/ocfs2/buffer_head_io.c b/fs/ocfs2/buffer_head_io.c
index cdb9b9bdea1f..156943973aa8 100644
--- a/fs/ocfs2/buffer_head_io.c
+++ b/fs/ocfs2/buffer_head_io.c
@@ -115,6 +115,7 @@ int ocfs2_read_blocks_sync(struct ocfs2_super *osb, u64 block,
 		}
 		bh = bhs[i];
 
+		printk("jbd: %d, dirty: %d, i: %d, bh: %p, %s\n", buffer_jbd(bh), buffer_dirty(bh), i, bh, __func__);
 		if (buffer_jbd(bh)) {
 			trace_ocfs2_read_blocks_sync_jbd(
 					(unsigned long long)bh->b_blocknr);
@@ -170,6 +171,8 @@ int ocfs2_read_blocks_sync(struct ocfs2_super *osb, u64 block,
 			continue;
 		}
 
+		printk("rf, jbd: %d, dirty: %d, i: %d, bh: %p, buf lock: %d, %s\n", buffer_jbd(bh),
+			buffer_dirty(bh), buffer_locked(bh), i, bh, __func__);
 		/* No need to wait on the buffer if it's managed by JBD. */
 		if (!buffer_jbd(bh))
 			wait_on_buffer(bh);
diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c
index 2cc5c99fe941..3b9a8b62a57d 100644
--- a/fs/ocfs2/inode.c
+++ b/fs/ocfs2/inode.c
@@ -489,6 +489,8 @@ static int ocfs2_read_locked_inode(struct inode *inode,
 		}
 	}
 
+	printk("can lock: %d, sysf: %d, blkno: %lu, %s\n", can_lock,
+		args->fi_flags & OCFS2_FI_FLAG_SYSFILE, args->fi_blkno, __func__);
 	if (can_lock) {
 		if (args->fi_flags & OCFS2_FI_FLAG_FILECHECK_CHK)
 			status = ocfs2_filecheck_read_inode_block_full(inode,