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Groups > linux.kernel > #1703774
| From | Mikael Pettersson <mikpelinux@gmail.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: strace-4.18 test suite oopses sparc64 4.12 and 4.13-rc kernels |
| Date | 2017-08-04 10:10 +0200 |
| Message-ID | <uaFQd-4tx-13@gated-at.bofh.it> (permalink) |
| References | <u9MqM-nk-69@gated-at.bofh.it> <ua9wZ-765-5@gated-at.bofh.it> <uauBr-4Yd-7@gated-at.bofh.it> <uawjU-5YP-13@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
David Miller writes: > From: Mikael Pettersson <mikpelinux@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 <mikpelinux@gmail.com>
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Re: strace-4.18 test suite oopses sparc64 4.12 and 4.13-rc kernels Mikael Pettersson <mikpelinux@gmail.com> - 2017-07-31 19:20 +0200
Re: strace-4.18 test suite oopses sparc64 4.12 and 4.13-rc kernels Anatoly Pugachev <matorola@gmail.com> - 2017-07-31 23:50 +0200
Re: strace-4.18 test suite oopses sparc64 4.12 and 4.13-rc kernels David Miller <davem@davemloft.net> - 2017-08-01 00:00 +0200
Re: strace-4.18 test suite oopses sparc64 4.12 and 4.13-rc kernels David Miller <davem@davemloft.net> - 2017-08-01 00:10 +0200
Re: strace-4.18 test suite oopses sparc64 4.12 and 4.13-rc kernels Mikael Pettersson <mikpelinux@gmail.com> - 2017-08-01 09:30 +0200
Re: strace-4.18 test suite oopses sparc64 4.12 and 4.13-rc kernels Sam Ravnborg <sam@ravnborg.org> - 2017-08-01 23:00 +0200
Re: strace-4.18 test suite oopses sparc64 4.12 and 4.13-rc kernels Sam Ravnborg <sam@ravnborg.org> - 2017-08-02 23:40 +0200
Re: strace-4.18 test suite oopses sparc64 4.12 and 4.13-rc kernels David Miller <davem@davemloft.net> - 2017-08-03 01:30 +0200
Re: strace-4.18 test suite oopses sparc64 4.12 and 4.13-rc kernels Mikael Pettersson <mikpelinux@gmail.com> - 2017-08-03 22:10 +0200
Re: strace-4.18 test suite oopses sparc64 4.12 and 4.13-rc kernels David Miller <davem@davemloft.net> - 2017-08-04 00:00 +0200
Re: strace-4.18 test suite oopses sparc64 4.12 and 4.13-rc kernels Sam Ravnborg <sam@ravnborg.org> - 2017-08-04 07:50 +0200
Re: strace-4.18 test suite oopses sparc64 4.12 and 4.13-rc kernels Mikael Pettersson <mikpelinux@gmail.com> - 2017-08-04 10:10 +0200
Re: strace-4.18 test suite oopses sparc64 4.12 and 4.13-rc kernels David Miller <davem@davemloft.net> - 2017-08-04 18:50 +0200
Re: strace-4.18 test suite oopses sparc64 4.12 and 4.13-rc kernels Anatoly Pugachev <matorola@gmail.com> - 2017-08-01 00:10 +0200
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