linux-kernel - Forwarded: Re: [bpf?] [net?] BUG: sleeping function called from invalid context in sock_map_delete

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Message-ID: <68e8287f.050a0220.91a22.000d.GAE@google.com>
Date: Thu, 09 Oct 2025 14:26:23 -0700
From: syzbot <syzbot+1f1fbecb9413cdbfbef8@...kaller.appspotmail.com>
To: linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Forwarded: Re: [bpf?] [net?] BUG: sleeping function called from
 invalid context in sock_map_delete_elem

For archival purposes, forwarding an incoming command email to
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***

Subject: Re: [bpf?] [net?] BUG: sleeping function called from invalid context in sock_map_delete_elem
Author: listout@...tout.xyz

#syz test

--- a/net/bpf/test_run.c
+++ b/net/bpf/test_run.c
@@ -38,10 +38,7 @@ static void bpf_test_timer_enter(struct bpf_test_timer *t)
 	__acquires(rcu)
 {
 	rcu_read_lock();
-	if (t->mode == NO_PREEMPT)
-		preempt_disable();
-	else
-		migrate_disable();
+	migrate_disable();
 
 	t->time_start = ktime_get_ns();
 }
@@ -51,10 +48,7 @@ static void bpf_test_timer_leave(struct bpf_test_timer *t)
 {
 	t->time_start = 0;
 
-	if (t->mode == NO_PREEMPT)
-		preempt_enable();
-	else
-		migrate_enable();
+	migrate_enable();
 	rcu_read_unlock();
 }
 

-- 
Regards,
listout