On 08/30/2017 03:10 PM, Pasi Kärkkäinen wrote: > Hello everyone, > > Recently Nathan March reported on centos-virt list he's getting frequent > Linux kernel crashes with Linux 4.9 LTS kernel because of the missing patch > "tty: Fix ldisc crash on reopened tty". > > The patch was already merged upstream here: > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=71472fa9c52b1da27663c275d416d8654b905f05 > > but then reverted here: > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=896d81fefe5d1919537db2c2150ab6384e4a6610 > > Nathan confirmed if he applies the patch from > 71472fa9c52b1da27663c275d416d8654b905f05 to his Linux 4.9 LTS kernel the > bug/problem goes away, so the patch (or similar fix) is still needed, at > least for 4.9 LTS kernel. > > > Mikulas reported he's able to trigger the same crash on Linux 4.10: > https://www.spinics.net/lists/kernel/msg2440637.html > https://lists.gt.net/linux/kernel/2664604?search_string=ldisc%20reopened;#2664604 > > Michael Neuling reported he's able to trigger the bug on PowerPC: > https://lkml.org/lkml/2017/3/10/1582 > > > So now the question is.. is anyone currently working on getting this patch > fixed and applied upstream? I think one of the problems earlier was being > able to reliable reproduce the crash.. Nathan says he's able to reproduce it > many times per week on his environment on x86_64. >
I have no issues rolling this patch in , while we wait on upstream, if it makes our tree more stable.
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