linux-kernel - Re: [syzbot] [fs?] BUG: sleeping function called from invalid context in hook_sb

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Message-ID: <tencent_7784EEC92ECA4CBAE7CAC6F592CEC6728906@qq.com>
Date: Wed, 24 Sep 2025 18:38:53 +0800
From: Edward Adam Davis <eadavis@...com>
To: syzbot+12479ae15958fc3f54ec@...kaller.appspotmail.com
Cc: linux-kernel@...r.kernel.org,
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [fs?] BUG: sleeping function called from invalid context in hook_sb_delete

#syz test

diff --git a/security/landlock/fs.c b/security/landlock/fs.c
index 4ed997f4a663..a18d53507210 100644
--- a/security/landlock/fs.c
+++ b/security/landlock/fs.c
@@ -1484,7 +1484,6 @@ static void hook_sb_delete(struct super_block *const sb)
 			 * previous loop walk, which is not needed anymore.
 			 */
 			iput(prev_inode);
-			cond_resched();
 			spin_lock(&sb->s_inode_list_lock);
 		}
 		prev_inode = inode;
diff --git a/kernel/fork.c b/kernel/fork.c
index e9a7fb5c3e49..a0b8eeeb1d27 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -2349,7 +2349,7 @@ __latent_entropy struct task_struct *copy_process(
 	if (need_futex_hash_allocate_default(clone_flags)) {
 		retval = futex_hash_allocate_default();
 		if (retval)
-			goto bad_fork_core_free;
+			goto bad_fork_cancel_cgroup;
 		/*
 		 * If we fail beyond this point we don't free the allocated
 		 * futex hash map. We assume that another thread will be created