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. 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@xxxxxxxxxxxxx>