On Wed, 2021-06-16 at 08:56 -0400, Paul Gortmaker wrote: > [Re: [swat] ltp failures on autobuilder] On 11/06/2021 (Fri 14:19) Richard > Purdie wrote: > > > On Fri, 2021-06-11 at 12:36 +0100, Richard Purdie via > > lists.yoctoproject.org wrote: > > > as a .cfg to the kernel and that still reproduced the crash. However: > > > > > > CONFIG_DEBUG_KERNEL=y > > > CONFIG_CGROUP_DEBUG=y > > > CONFIG_SCHED_DEBUG=y > > > CONFIG_DEBUG_PREEMPT=y > > > # CONFIG_RCU_TRACE is not set > > > # CONFIG_X86_DEBUG_FPU is not set > > > # CONFIG_CONSOLE_POLL is not set > > > # CONFIG_DEBUG_INFO is not set > > > # CONFIG_KGDB is not set > > > # CONFIG_KGDB_HONOUR_BLOCKLIST is not set > > > # CONFIG_KGDB_SERIAL_CONSOLE is not set > > > # CONFIG_KGDB_LOW_LEVEL_TRAP is not set > > > # CONFIG_KGDB_KDB is not set > > > # CONFIG_KDB_KEYBOARD is not set > > > # CONFIG_DEBUG_MISC is not set > > > > > > > Isolated down to CONFIG_SCHED_DEBUG=y being the line which somehow "fixes" > > the crash. I can enable all the above apart from that and we can reproduce > > it. > > > > Also, I changed gatesgarth to use qemu 5.2.0 copied in from hardknott and > > that > > breaks it. Dropping the 27 CVE patches "fixes" it again. It is possible it > > is one of the CVE fixes. Continuing to try and isolate. > > For the mail archive trail, and for those not follwing the ongoing > research on IRC, we are hopeful that this fixes it. > > https://lore.kernel.org/lkml/[email protected]/
Awesome work in tracking that down, much appreciated, thanks! Curious what upstream will make of it now... Cheers, Richard
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