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Message-ID: <CAK7LNAScFhU+MYigK89krNt_1mk7-uFfVEroAvZeni1rv+m_vg@mail.gmail.com>
Date: Tue, 31 Mar 2020 11:26:08 +0900
From: Masahiro Yamada <masahiroy@...nel.org>
To: Randy Dunlap <rdunlap@...radead.org>
Cc: Stephen Rothwell <sfr@...b.auug.org.au>,
Linux Next Mailing List <linux-next@...r.kernel.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
richard -rw- weinberger <richard.weinberger@...il.com>,
Al Viro <viro@...iv.linux.org.uk>
Subject: Re: linux-next: Tree for Mar 27 (kbuild)
Hi Randy,
On Tue, Mar 31, 2020 at 11:10 AM Randy Dunlap <rdunlap@...radead.org> wrote:
>
> On 3/27/20 8:52 AM, Randy Dunlap wrote:
> > On 3/27/20 1:07 AM, Stephen Rothwell wrote:
> >> Hi all,
> >>
> >> Changes since 20200326:
> >>
> >
> > on i386, UML defconfig build fails with: (mostly get_user() variants)
> >
>
> Hi Yamada-san,
>
> Al Viro identified these build errors as due to:
>
> Buggered-by: 1a908babcb144 (x86: replace arch macros from compiler with CONFIG_X86_{32,64})
>
> If the intention is to check i386/x86_64 excluding UML, testing
> CONFIG_X86_{32,64} is simpler.
>
> Which is not true, since uml/x86 configs bloody well *do* have CONFIG_X86_{32,64}
> defined. See arch/x86/um/Kconfig; and yes, it does need those, as well as
> arch/x86/Kconfig.cpu.
>
My bad - I did not notice arch/x86/um/Kconfig defined them.
I will fix them ASAP.
> and they are still happening (on UML on i386 defconfig).
>
>
> >
> > CC kernel/signal.o
> > In file included from ../include/linux/kernel.h:15:0,
> > from ../include/asm-generic/bug.h:19,
> > from ./arch/um/include/generated/asm/bug.h:1,
> > from ../include/linux/bug.h:5,
> > from ../include/linux/mmdebug.h:5,
> > from ../include/linux/gfp.h:5,
> > from ../include/linux/slab.h:15,
> > from ../kernel/signal.c:14:
> > ../kernel/signal.c: In function 'print_fatal_signal':
> > ../kernel/signal.c:1250:33: error: 'struct pt_regs' has no member named 'ip'
> > pr_info("code at %08lx: ", regs->ip);
> > ^
> > ../include/linux/printk.h:310:34: note: in definition of macro 'pr_info'
> > printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
> > ^~~~~~~~~~~
> > In file included from ../arch/um/include/asm/uaccess.h:39:0,
> > from ../include/linux/uaccess.h:11,
> > from ../include/linux/sched/task.h:11,
> > from ../kernel/signal.c:20:
> > ../kernel/signal.c:1256:45: error: 'struct pt_regs' has no member named 'ip'
> > if (get_user(insn, (unsigned char *)(regs->ip + i)))
> > ^
> > ../include/asm-generic/uaccess.h:196:28: note: in definition of macro 'get_user'
> > const void __user *__p = (ptr); \
> > ^~~
> > ../kernel/signal.c:1256:45: error: 'struct pt_regs' has no member named 'ip'
> > if (get_user(insn, (unsigned char *)(regs->ip + i)))
> > ^
> > ../include/asm-generic/uaccess.h:93:66: note: in definition of macro 'access_ok'
> > #define access_ok(addr, size) __access_ok((unsigned long)(addr),(size))
> > ^~~~
> > ../kernel/signal.c:1256:8: note: in expansion of macro 'get_user'
> > if (get_user(insn, (unsigned char *)(regs->ip + i)))
> > ^~~~~~~~
> > ../kernel/signal.c:1256:45: error: 'struct pt_regs' has no member named 'ip'
> > if (get_user(insn, (unsigned char *)(regs->ip + i)))
> > ^
> > ../include/asm-generic/uaccess.h:158:19: note: in definition of macro '__get_user'
> > switch (sizeof(*(ptr))) { \
> > ^~~
> > ../kernel/signal.c:1256:8: note: in expansion of macro 'get_user'
> > if (get_user(insn, (unsigned char *)(regs->ip + i)))
> > ^~~~~~~~
> > ../kernel/signal.c:1256:45: error: 'struct pt_regs' has no member named 'ip'
> > if (get_user(insn, (unsigned char *)(regs->ip + i)))
> > ^
> > ../include/asm-generic/uaccess.h:209:47: note: in definition of macro '__get_user_fn'
> > #define __get_user_fn(sz, u, k) __get_user_fn(sz, u, k)
> > ^~
> > ../include/asm-generic/uaccess.h:199:3: note: in expansion of macro '__get_user'
> > __get_user((x), (__typeof__(*(ptr)) __user *)__p) :\
> > ^~~~~~~~~~
> > ../kernel/signal.c:1256:8: note: in expansion of macro 'get_user'
> > if (get_user(insn, (unsigned char *)(regs->ip + i)))
> > ^~~~~~~~
> > ../kernel/signal.c:1256:45: error: 'struct pt_regs' has no member named 'ip'
> > if (get_user(insn, (unsigned char *)(regs->ip + i)))
> > ^
> > ../include/asm-generic/uaccess.h:209:51: note: in definition of macro '__get_user_fn'
> > #define __get_user_fn(sz, u, k) __get_user_fn(sz, u, k)
> > ^
> > ../include/asm-generic/uaccess.h:199:3: note: in expansion of macro '__get_user'
> > __get_user((x), (__typeof__(*(ptr)) __user *)__p) :\
> > ^~~~~~~~~~
> > ../kernel/signal.c:1256:8: note: in expansion of macro 'get_user'
> > if (get_user(insn, (unsigned char *)(regs->ip + i)))
> > ^~~~~~~~
> > ../kernel/signal.c:1256:45: error: 'struct pt_regs' has no member named 'ip'
> > if (get_user(insn, (unsigned char *)(regs->ip + i)))
> > ^
> > ../include/asm-generic/uaccess.h:163:32: note: in definition of macro '__get_user'
> > (x) = *(__force __typeof__(*(ptr)) *) &__x; \
> > ^~~
> > ../kernel/signal.c:1256:8: note: in expansion of macro 'get_user'
> > if (get_user(insn, (unsigned char *)(regs->ip + i)))
> > ^~~~~~~~
> > ../kernel/signal.c:1256:45: error: 'struct pt_regs' has no member named 'ip'
> > if (get_user(insn, (unsigned char *)(regs->ip + i)))
> > ^
> > ../include/asm-generic/uaccess.h:209:47: note: in definition of macro '__get_user_fn'
> > #define __get_user_fn(sz, u, k) __get_user_fn(sz, u, k)
> > ^~
> > ../include/asm-generic/uaccess.h:199:3: note: in expansion of macro '__get_user'
> > __get_user((x), (__typeof__(*(ptr)) __user *)__p) :\
> > ^~~~~~~~~~
> > ../kernel/signal.c:1256:8: note: in expansion of macro 'get_user'
> > if (get_user(insn, (unsigned char *)(regs->ip + i)))
> > ^~~~~~~~
> > ../kernel/signal.c:1256:45: error: 'struct pt_regs' has no member named 'ip'
> > if (get_user(insn, (unsigned char *)(regs->ip + i)))
> > ^
> > ../include/asm-generic/uaccess.h:209:51: note: in definition of macro '__get_user_fn'
> > #define __get_user_fn(sz, u, k) __get_user_fn(sz, u, k)
> > ^
> > ../include/asm-generic/uaccess.h:199:3: note: in expansion of macro '__get_user'
> > __get_user((x), (__typeof__(*(ptr)) __user *)__p) :\
> > ^~~~~~~~~~
> > ../kernel/signal.c:1256:8: note: in expansion of macro 'get_user'
> > if (get_user(insn, (unsigned char *)(regs->ip + i)))
> > ^~~~~~~~
> > ../kernel/signal.c:1256:45: error: 'struct pt_regs' has no member named 'ip'
> > if (get_user(insn, (unsigned char *)(regs->ip + i)))
> > ^
> > ../include/asm-generic/uaccess.h:170:32: note: in definition of macro '__get_user'
> > (x) = *(__force __typeof__(*(ptr)) *) &__x; \
> > ^~~
> > ../kernel/signal.c:1256:8: note: in expansion of macro 'get_user'
> > if (get_user(insn, (unsigned char *)(regs->ip + i)))
> > ^~~~~~~~
> > ../kernel/signal.c:1256:45: error: 'struct pt_regs' has no member named 'ip'
> > if (get_user(insn, (unsigned char *)(regs->ip + i)))
> > ^
> > ../include/asm-generic/uaccess.h:209:47: note: in definition of macro '__get_user_fn'
> > #define __get_user_fn(sz, u, k) __get_user_fn(sz, u, k)
> > ^~
> > ../include/asm-generic/uaccess.h:199:3: note: in expansion of macro '__get_user'
> > __get_user((x), (__typeof__(*(ptr)) __user *)__p) :\
> > ^~~~~~~~~~
> > ../kernel/signal.c:1256:8: note: in expansion of macro 'get_user'
> > if (get_user(insn, (unsigned char *)(regs->ip + i)))
> > ^~~~~~~~
> > ../kernel/signal.c:1256:45: error: 'struct pt_regs' has no member named 'ip'
> > if (get_user(insn, (unsigned char *)(regs->ip + i)))
> > ^
> > ../include/asm-generic/uaccess.h:209:51: note: in definition of macro '__get_user_fn'
> > #define __get_user_fn(sz, u, k) __get_user_fn(sz, u, k)
> > ^
> > ../include/asm-generic/uaccess.h:199:3: note: in expansion of macro '__get_user'
> > __get_user((x), (__typeof__(*(ptr)) __user *)__p) :\
> > ^~~~~~~~~~
> > ../kernel/signal.c:1256:8: note: in expansion of macro 'get_user'
> > if (get_user(insn, (unsigned char *)(regs->ip + i)))
> > ^~~~~~~~
> > ../kernel/signal.c:1256:45: error: 'struct pt_regs' has no member named 'ip'
> > if (get_user(insn, (unsigned char *)(regs->ip + i)))
> > ^
> > ../include/asm-generic/uaccess.h:177:32: note: in definition of macro '__get_user'
> > (x) = *(__force __typeof__(*(ptr)) *) &__x; \
> > ^~~
> > ../kernel/signal.c:1256:8: note: in expansion of macro 'get_user'
> > if (get_user(insn, (unsigned char *)(regs->ip + i)))
> > ^~~~~~~~
> > ../kernel/signal.c:1256:45: error: 'struct pt_regs' has no member named 'ip'
> > if (get_user(insn, (unsigned char *)(regs->ip + i)))
> > ^
> > ../include/asm-generic/uaccess.h:209:47: note: in definition of macro '__get_user_fn'
> > #define __get_user_fn(sz, u, k) __get_user_fn(sz, u, k)
> > ^~
> > ../include/asm-generic/uaccess.h:199:3: note: in expansion of macro '__get_user'
> > __get_user((x), (__typeof__(*(ptr)) __user *)__p) :\
> > ^~~~~~~~~~
> > ../kernel/signal.c:1256:8: note: in expansion of macro 'get_user'
> > if (get_user(insn, (unsigned char *)(regs->ip + i)))
> > ^~~~~~~~
> > ../kernel/signal.c:1256:45: error: 'struct pt_regs' has no member named 'ip'
> > if (get_user(insn, (unsigned char *)(regs->ip + i)))
> > ^
> > ../include/asm-generic/uaccess.h:209:51: note: in definition of macro '__get_user_fn'
> > #define __get_user_fn(sz, u, k) __get_user_fn(sz, u, k)
> > ^
> > ../include/asm-generic/uaccess.h:199:3: note: in expansion of macro '__get_user'
> > __get_user((x), (__typeof__(*(ptr)) __user *)__p) :\
> > ^~~~~~~~~~
> > ../kernel/signal.c:1256:8: note: in expansion of macro 'get_user'
> > if (get_user(insn, (unsigned char *)(regs->ip + i)))
> > ^~~~~~~~
> > ../kernel/signal.c:1256:45: error: 'struct pt_regs' has no member named 'ip'
> > if (get_user(insn, (unsigned char *)(regs->ip + i)))
> > ^
> > ../include/asm-generic/uaccess.h:184:32: note: in definition of macro '__get_user'
> > (x) = *(__force __typeof__(*(ptr)) *) &__x; \
> > ^~~
> > ../kernel/signal.c:1256:8: note: in expansion of macro 'get_user'
> > if (get_user(insn, (unsigned char *)(regs->ip + i)))
> > ^~~~~~~~
> > ../kernel/signal.c:1256:45: error: 'struct pt_regs' has no member named 'ip'
> > if (get_user(insn, (unsigned char *)(regs->ip + i)))
> > ^
> > ../include/asm-generic/uaccess.h:200:24: note: in definition of macro 'get_user'
> > ((x) = (__typeof__(*(ptr)))0,-EFAULT); \
> > ^~~
> > ../include/asm-generic/uaccess.h:200:31: warning: left-hand operand of comma expression has no effect [-Wunused-value]
> > ((x) = (__typeof__(*(ptr)))0,-EFAULT); \
> > ^
> > ../kernel/signal.c:1256:8: note: in expansion of macro 'get_user'
> > if (get_user(insn, (unsigned char *)(regs->ip + i)))
> > ^~~~~~~~
> >
> >
>
>
> --
> ~Randy
> Reported-by: Randy Dunlap <rdunlap@...radead.org>
--
Best Regards
Masahiro Yamada
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