David Miller writes: > From: Mikael Pettersson <mikpeli...@gmail.com> > Date: Thu, 3 Aug 2017 22:02:57 +0200 > > > With that in place the kernel booted fine. > > When I then ran the `poll' strace test binary, the OOPS was replaced by: > > > > [ 140.589913] _copy_from_user(fff000123c8dfa7c, (null), 240) > > res 240 > > [ 140.753162] _copy_from_user(fff000123c8dfa7c, 00000000f7e4a000, 8) res 8 > > [ 140.824155] _copy_from_user(fff000123c8dfa7c, 00000000f7e49ff8, 16) res > > 18442240552407530112 > > > > That last `res' doesn't look good. > > Please test this patch: > > diff --git a/arch/sparc/lib/U3memcpy.S b/arch/sparc/lib/U3memcpy.S > index 54f9870..5a8cb37 100644 > --- a/arch/sparc/lib/U3memcpy.S > +++ b/arch/sparc/lib/U3memcpy.S > @@ -145,13 +145,13 @@ ENDPROC(U3_retl_o2_plus_GS_plus_0x08) > ENTRY(U3_retl_o2_and_7_plus_GS) > and %o2, 7, %o2 > retl > - add %o2, GLOBAL_SPARE, %o2 > + add %o2, GLOBAL_SPARE, %o0 > ENDPROC(U3_retl_o2_and_7_plus_GS) > ENTRY(U3_retl_o2_and_7_plus_GS_plus_8) > add GLOBAL_SPARE, 8, GLOBAL_SPARE > and %o2, 7, %o2 > retl > - add %o2, GLOBAL_SPARE, %o2 > + add %o2, GLOBAL_SPARE, %o0 > ENDPROC(U3_retl_o2_and_7_plus_GS_plus_8) > #endif >
Backing out my debugging patch and adding this one instead gave me a working kernel that doesn't OOPS. Thanks. Tested-by: Mikael Pettersson <mikpeli...@gmail.com>
