Re: [syzbot] [nbd?] possible deadlock in nbd_queue_rq
On 2025/07/08 9:18, Hillf Danton wrote:
> On Mon, 7 Jul 2025 10:39:44 -0700 Bart Van Assche wrote:
>> On 7/6/25 5:59 PM, Hillf Danton wrote:
>>> and given the second one, the report is false positive.
>>
>> Whether or not this report is a false positive, the root cause should be
>> fixed because lockdep disables itself after the first circular locking
>> complaint. From print_usage_bug() in kernel/locking/lockdep.c:
>>
>> if (!debug_locks_off() || debug_locks_silent)
>> return;
>>
> The root cause could be walked around for example by trying not to init
> nbd more than once.
How did you come to think so?
nbd_init() is already called only once because of module_init(nbd_init).
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