linux-kernel - Re: [syzbot] [i2c?] [usb?] INFO: trying to register non-static key in i2c_register

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Message-ID: <20260105092542.1989-1-hdanton@sina.com>
Date: Mon,  5 Jan 2026 17:25:40 +0800
From: Hillf Danton <hdanton@...a.com>
To: syzbot <syzbot+4718cc0f82054afeea8f@...kaller.appspotmail.com>
Cc: linux-kernel@...r.kernel.org,
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [i2c?] [usb?] INFO: trying to register non-static key in i2c_register_adapter

> Date: Mon, 05 Jan 2026 00:31:24 -0800
> Hello,
> 
> syzbot found the following issue on:
> 
> HEAD commit:    b69053dd3ffb wifi: mt76: Remove blank line after mt792x fi..
> git tree:       upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=151caa9a580000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=513255d80ab78f2b
> dashboard link: https://syzkaller.appspot.com/bug?extid=4718cc0f82054afeea8f
> compiler:       Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=131caa9a580000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=122377da580000

#syz test

--- x/drivers/i2c/i2c-core-base.c
+++ y/drivers/i2c/i2c-core-base.c
@@ -1573,7 +1573,6 @@ static int i2c_register_adapter(struct i
 	res = device_add(&adap->dev);
 	if (res) {
 		pr_err("adapter '%s': can't register device (%d)\n", adap->name, res);
-		put_device(&adap->dev);
 		goto out_list;
 	}
 
--