Hi, Greg, I have resend patches and cc stable list. This patch is needed for 4.4.y but need restruction, as Paul said: Strictly speaking the faulty MIPS implementation can be traced further back to commit 856839b76836 ("MIPS: Add arch_trigger_all_cpu_backtrace() function") in v3.19 Huacai ------------------ Original ------------------ From: "Greg Kroah-Hartman"<gregkh@xxxxxxxxxxxxxxxxxxx>; Date: Tue, Jul 17, 2018 03:20 PM To: "陈华才"<chenhc@xxxxxxxxxx>; Cc: "linux-kernel"<linux-kernel@xxxxxxxxxxxxxxx>; "stable"<stable@xxxxxxxxxxxxxxx>; "Paul Burton"<paul.burton@xxxxxxxx>; "James Hogan"<jhogan@xxxxxxxxxx>; Subject: Re: [PATCH 4.9 03/32] MIPS: Use asyncIPIsforarch_trigger_cpumask_backtrace() On Tue, Jul 17, 2018 at 02:53:38PM +0800, 陈华才 wrote: > Hi, Greg, > > I have backported and tested it to 4.9 and 4.4: > https://patchwork.linux-mips.org/patch/19862/ > https://patchwork.linux-mips.org/patch/19863/ I can't do anything with random web links. Please properly cc: the stable list with the backports and I can take them from there. And are you sure they are needed for 4.4.y? thanks, greg k-h