Re: [PATCH 4.19 000/306] 4.19.87-stable review

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Hello Greg,

jouni.hogander@xxxxxxxxxx (Jouni Högander) writes:

> Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> writes:
>>> > Now queued up, I'll push out -rc2 versions with this fix.
>>> >
>>> > greg k-h
>>> 
>>> We have also been informed about another regression these two commits
>>> are causing:
>>> 
>>> https://lore.kernel.org/lkml/ace19af4-7cae-babd-bac5-cd3505dcd874@xxxxxxxxxxxxxxxxxxx/
>>> 
>>> I suggest to drop these two patches from this queue, and give us a
>>> week to shake out the regressions of the change, and once ready, we
>>> can include the complete set of fixes to stable (probably in a week or
>>> two).
>>
>> Ok, thanks for the information, I've now dropped them from all of the
>> queues that had them in them.
>>
>> greg k-h
>
> I have now run more extensive Syzkaller testing on following patches:
>
> cb626bf566eb net-sysfs: Fix reference count leak
> ddd9b5e3e765 net-sysfs: Call dev_hold always in rx_queue_add_kobject
> e0b60903b434 net-sysfs: Call dev_hold always in netdev_queue_add_kobje
> 48a322b6f996 net-sysfs: fix netdev_queue_add_kobject() breakage
> b8eb718348b8 net-sysfs: Fix reference count leak in rx|netdev_queue_add_kobject
>
> These patches are fixing couple of memory leaks including this one found
> by Syzbot: https://syzkaller.appspot.com/bug?extid=ad8ca40ecd77896d51e2
>
> I can reproduce these memory leaks in following stable branches: 4.14,
> 4.19, and 5.4.
>
> These are all now merged into net/master tree and based on my testing
> they are ready to be taken into stable branches as well.
>
> Best Regards,
>
> Jouni Högander

These four patches are still missing from 4.14 and 4.19 branches:

ddd9b5e3e765 net-sysfs: Call dev_hold always in rx_queue_add_kobject
e0b60903b434 net-sysfs: Call dev_hold always in netdev_queue_add_kobje
48a322b6f996 net-sysfs: fix netdev_queue_add_kobject() breakage
b8eb718348b8 net-sysfs: Fix reference count leak in rx|netdev_queue_add_kobject

Could you please consider taking them in or let me know if you want some
further activities from my side?

BR,

Jouni Högander




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