Messages in this thread | | | Date | Fri, 17 Apr 2020 12:31:20 +0530 | From | "Naveen N. Rao" <> | Subject | Re: POWER9 crash due to STRICT_KERNEL_RWX (WAS: Re: Linux-next POWER9 NULL pointer NIP...) |
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Hi Qian,
Qian Cai wrote: > OK, reverted the commit, > > c55d7b5e6426 (“powerpc: Remove STRICT_KERNEL_RWX incompatibility with RELOCATABLE”) > > or set STRICT_KERNEL_RWX=n fixed the crash below and also mentioned in this thread, > > https://lore.kernel.org/lkml/15AC5B0E-A221-4B8C-9039-FA96B8EF7C88@lca.pw/
Do you see any errors logged in dmesg when you see the crash? STRICT_KERNEL_RWX changes how patch_instruction() works, so it would be interesting to see if there are any ftrace-related errors thrown before the crash.
- Naveen
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