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

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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




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