Re: mmotm 2013-03-01-15-50 uploaded (strict user copy)
On 03/14/13 10:48, Stephen Boyd wrote: > On 03/01/13 19:42, Stephen Boyd wrote: >> On 03/01/13 19:00, Randy Dunlap wrote: >>> on i386: >>> >>> ERROR: "copy_from_user_overflow" [fs/binfmt_misc.ko] undefined! >>> >>> which I don't understand. >>> lib/usercopy.o is built and building binfmt_misc.c says: >>> >>> CC [M] fs/binfmt_misc.o >>> In file included from arch/x86/include/asm/uaccess.h:537:0, >>> from include/linux/uaccess.h:5, >>> from include/linux/highmem.h:8, >>> from include/linux/pagemap.h:10, >>> from fs/binfmt_misc.c:27: >>> arch/x86/include/asm/uaccess_32.h: In function 'parse_command.part.1': >>> arch/x86/include/asm/uaccess_32.h:211:26: warning: call to >>> 'copy_from_user_overflow' declared with attribute warning: copy_from_user() >>> buffer size is not provably correct [enabled by default] >> Hm.. That's because it's part of lib and not obj, right? >> >> diff --git a/lib/Makefile b/lib/Makefile >> index 59fabd0..4c55104 100644 >> --- a/lib/Makefile >> +++ b/lib/Makefile >> @@ -15,7 +15,7 @@ lib-y := ctype.o string.o vsprintf.o cmdline.o \ >> is_single_threaded.o plist.o decompress.o kobject_uevent.o \ >> earlycpio.o percpu-refcount.o >> >> -lib-$(CONFIG_ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS) += usercopy.o >> +obj-$(CONFIG_ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS) += usercopy.o >> lib-$(CONFIG_MMU) += ioremap.o >> lib-$(CONFIG_SMP) += cpumask.o >> >> > > Andrew, can you squash this into "Kconfig: consolidate > CONFIG_DEBUG_STRICT_USER_COPY_CHECKS"? > Acked-by: Randy Dunlap Thanks. -- ~Randy -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: mmotm 2013-03-01-15-50 uploaded (strict user copy)
On 03/01/13 19:42, Stephen Boyd wrote: > On 03/01/13 19:00, Randy Dunlap wrote: >> on i386: >> >> ERROR: "copy_from_user_overflow" [fs/binfmt_misc.ko] undefined! >> >> which I don't understand. >> lib/usercopy.o is built and building binfmt_misc.c says: >> >> CC [M] fs/binfmt_misc.o >> In file included from arch/x86/include/asm/uaccess.h:537:0, >> from include/linux/uaccess.h:5, >> from include/linux/highmem.h:8, >> from include/linux/pagemap.h:10, >> from fs/binfmt_misc.c:27: >> arch/x86/include/asm/uaccess_32.h: In function 'parse_command.part.1': >> arch/x86/include/asm/uaccess_32.h:211:26: warning: call to >> 'copy_from_user_overflow' declared with attribute warning: copy_from_user() >> buffer size is not provably correct [enabled by default] > Hm.. That's because it's part of lib and not obj, right? > > diff --git a/lib/Makefile b/lib/Makefile > index 59fabd0..4c55104 100644 > --- a/lib/Makefile > +++ b/lib/Makefile > @@ -15,7 +15,7 @@ lib-y := ctype.o string.o vsprintf.o cmdline.o \ > is_single_threaded.o plist.o decompress.o kobject_uevent.o \ > earlycpio.o percpu-refcount.o > > -lib-$(CONFIG_ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS) += usercopy.o > +obj-$(CONFIG_ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS) += usercopy.o > lib-$(CONFIG_MMU) += ioremap.o > lib-$(CONFIG_SMP) += cpumask.o > > Andrew, can you squash this into "Kconfig: consolidate CONFIG_DEBUG_STRICT_USER_COPY_CHECKS"? -- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: mmotm 2013-03-01-15-50 uploaded (strict user copy)
On 03/01/13 19:42, Stephen Boyd wrote: On 03/01/13 19:00, Randy Dunlap wrote: on i386: ERROR: copy_from_user_overflow [fs/binfmt_misc.ko] undefined! which I don't understand. lib/usercopy.o is built and building binfmt_misc.c says: CC [M] fs/binfmt_misc.o In file included from arch/x86/include/asm/uaccess.h:537:0, from include/linux/uaccess.h:5, from include/linux/highmem.h:8, from include/linux/pagemap.h:10, from fs/binfmt_misc.c:27: arch/x86/include/asm/uaccess_32.h: In function 'parse_command.part.1': arch/x86/include/asm/uaccess_32.h:211:26: warning: call to 'copy_from_user_overflow' declared with attribute warning: copy_from_user() buffer size is not provably correct [enabled by default] Hm.. That's because it's part of lib and not obj, right? diff --git a/lib/Makefile b/lib/Makefile index 59fabd0..4c55104 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -15,7 +15,7 @@ lib-y := ctype.o string.o vsprintf.o cmdline.o \ is_single_threaded.o plist.o decompress.o kobject_uevent.o \ earlycpio.o percpu-refcount.o -lib-$(CONFIG_ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS) += usercopy.o +obj-$(CONFIG_ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS) += usercopy.o lib-$(CONFIG_MMU) += ioremap.o lib-$(CONFIG_SMP) += cpumask.o Andrew, can you squash this into Kconfig: consolidate CONFIG_DEBUG_STRICT_USER_COPY_CHECKS? -- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: mmotm 2013-03-01-15-50 uploaded (strict user copy)
On 03/14/13 10:48, Stephen Boyd wrote: On 03/01/13 19:42, Stephen Boyd wrote: On 03/01/13 19:00, Randy Dunlap wrote: on i386: ERROR: copy_from_user_overflow [fs/binfmt_misc.ko] undefined! which I don't understand. lib/usercopy.o is built and building binfmt_misc.c says: CC [M] fs/binfmt_misc.o In file included from arch/x86/include/asm/uaccess.h:537:0, from include/linux/uaccess.h:5, from include/linux/highmem.h:8, from include/linux/pagemap.h:10, from fs/binfmt_misc.c:27: arch/x86/include/asm/uaccess_32.h: In function 'parse_command.part.1': arch/x86/include/asm/uaccess_32.h:211:26: warning: call to 'copy_from_user_overflow' declared with attribute warning: copy_from_user() buffer size is not provably correct [enabled by default] Hm.. That's because it's part of lib and not obj, right? diff --git a/lib/Makefile b/lib/Makefile index 59fabd0..4c55104 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -15,7 +15,7 @@ lib-y := ctype.o string.o vsprintf.o cmdline.o \ is_single_threaded.o plist.o decompress.o kobject_uevent.o \ earlycpio.o percpu-refcount.o -lib-$(CONFIG_ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS) += usercopy.o +obj-$(CONFIG_ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS) += usercopy.o lib-$(CONFIG_MMU) += ioremap.o lib-$(CONFIG_SMP) += cpumask.o Andrew, can you squash this into Kconfig: consolidate CONFIG_DEBUG_STRICT_USER_COPY_CHECKS? Acked-by: Randy Dunlap rdun...@infradead.org Thanks. -- ~Randy -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: mmotm 2013-03-01-15-50 uploaded (strict user copy)
On 03/01/13 20:16, Stephen Boyd wrote: > On 03/01/13 19:42, Stephen Boyd wrote: >> On 03/01/13 19:00, Randy Dunlap wrote: >>> On 03/01/13 15:51, a...@linux-foundation.org wrote: The mm-of-the-moment snapshot 2013-03-01-15-50 has been uploaded to http://www.ozlabs.org/~akpm/mmotm/ >>> on i386: >>> >>> ERROR: "copy_from_user_overflow" [fs/binfmt_misc.ko] undefined! >>> >>> which I don't understand. >>> lib/usercopy.o is built and building binfmt_misc.c says: >>> >>> CC [M] fs/binfmt_misc.o >>> In file included from arch/x86/include/asm/uaccess.h:537:0, >>> from include/linux/uaccess.h:5, >>> from include/linux/highmem.h:8, >>> from include/linux/pagemap.h:10, >>> from fs/binfmt_misc.c:27: >>> arch/x86/include/asm/uaccess_32.h: In function 'parse_command.part.1': >>> arch/x86/include/asm/uaccess_32.h:211:26: warning: call to >>> 'copy_from_user_overflow' declared with attribute warning: copy_from_user() >>> buffer size is not provably correct [enabled by default] >> Hm.. That's because it's part of lib and not obj, right? Yes, this fixes the build error. >> diff --git a/lib/Makefile b/lib/Makefile >> index 59fabd0..4c55104 100644 >> --- a/lib/Makefile >> +++ b/lib/Makefile >> @@ -15,7 +15,7 @@ lib-y := ctype.o string.o vsprintf.o cmdline.o \ >> is_single_threaded.o plist.o decompress.o kobject_uevent.o \ >> earlycpio.o percpu-refcount.o >> >> -lib-$(CONFIG_ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS) += usercopy.o >> +obj-$(CONFIG_ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS) += usercopy.o >> lib-$(CONFIG_MMU) += ioremap.o >> lib-$(CONFIG_SMP) += cpumask.o >> >> > > I'm a little confused though because it is lib-y on x86 before my patch. binfmt_misc is built as a loadable module in my config. It must be the only user of copy_from_user_overflow() in this config. I guess that it would also fail prior to your patch, but I haven't tested it. Anyway, your patch above is correct and needed. thanks, -- ~Randy -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: mmotm 2013-03-01-15-50 uploaded (strict user copy)
On 03/01/13 19:42, Stephen Boyd wrote: > On 03/01/13 19:00, Randy Dunlap wrote: >> On 03/01/13 15:51, a...@linux-foundation.org wrote: >>> The mm-of-the-moment snapshot 2013-03-01-15-50 has been uploaded to >>> >>>http://www.ozlabs.org/~akpm/mmotm/ >>> >> on i386: >> >> ERROR: "copy_from_user_overflow" [fs/binfmt_misc.ko] undefined! >> >> which I don't understand. >> lib/usercopy.o is built and building binfmt_misc.c says: >> >> CC [M] fs/binfmt_misc.o >> In file included from arch/x86/include/asm/uaccess.h:537:0, >> from include/linux/uaccess.h:5, >> from include/linux/highmem.h:8, >> from include/linux/pagemap.h:10, >> from fs/binfmt_misc.c:27: >> arch/x86/include/asm/uaccess_32.h: In function 'parse_command.part.1': >> arch/x86/include/asm/uaccess_32.h:211:26: warning: call to >> 'copy_from_user_overflow' declared with attribute warning: copy_from_user() >> buffer size is not provably correct [enabled by default] > Hm.. That's because it's part of lib and not obj, right? > > diff --git a/lib/Makefile b/lib/Makefile > index 59fabd0..4c55104 100644 > --- a/lib/Makefile > +++ b/lib/Makefile > @@ -15,7 +15,7 @@ lib-y := ctype.o string.o vsprintf.o cmdline.o \ > is_single_threaded.o plist.o decompress.o kobject_uevent.o \ > earlycpio.o percpu-refcount.o > > -lib-$(CONFIG_ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS) += usercopy.o > +obj-$(CONFIG_ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS) += usercopy.o > lib-$(CONFIG_MMU) += ioremap.o > lib-$(CONFIG_SMP) += cpumask.o > > I'm a little confused though because it is lib-y on x86 before my patch. -- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: mmotm 2013-03-01-15-50 uploaded (strict user copy)
On 03/01/13 19:00, Randy Dunlap wrote: > On 03/01/13 15:51, a...@linux-foundation.org wrote: >> The mm-of-the-moment snapshot 2013-03-01-15-50 has been uploaded to >> >>http://www.ozlabs.org/~akpm/mmotm/ >> > > on i386: > > ERROR: "copy_from_user_overflow" [fs/binfmt_misc.ko] undefined! > > which I don't understand. > lib/usercopy.o is built and building binfmt_misc.c says: > > CC [M] fs/binfmt_misc.o > In file included from arch/x86/include/asm/uaccess.h:537:0, > from include/linux/uaccess.h:5, > from include/linux/highmem.h:8, > from include/linux/pagemap.h:10, > from fs/binfmt_misc.c:27: > arch/x86/include/asm/uaccess_32.h: In function 'parse_command.part.1': > arch/x86/include/asm/uaccess_32.h:211:26: warning: call to > 'copy_from_user_overflow' declared with attribute warning: copy_from_user() > buffer size is not provably correct [enabled by default] Hm.. That's because it's part of lib and not obj, right? diff --git a/lib/Makefile b/lib/Makefile index 59fabd0..4c55104 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -15,7 +15,7 @@ lib-y := ctype.o string.o vsprintf.o cmdline.o \ is_single_threaded.o plist.o decompress.o kobject_uevent.o \ earlycpio.o percpu-refcount.o -lib-$(CONFIG_ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS) += usercopy.o +obj-$(CONFIG_ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS) += usercopy.o lib-$(CONFIG_MMU) += ioremap.o lib-$(CONFIG_SMP) += cpumask.o -- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: mmotm 2013-03-01-15-50 uploaded (strict user copy)
On 03/01/13 15:51, a...@linux-foundation.org wrote: > The mm-of-the-moment snapshot 2013-03-01-15-50 has been uploaded to > >http://www.ozlabs.org/~akpm/mmotm/ > on i386: ERROR: "copy_from_user_overflow" [fs/binfmt_misc.ko] undefined! which I don't understand. lib/usercopy.o is built and building binfmt_misc.c says: CC [M] fs/binfmt_misc.o In file included from arch/x86/include/asm/uaccess.h:537:0, from include/linux/uaccess.h:5, from include/linux/highmem.h:8, from include/linux/pagemap.h:10, from fs/binfmt_misc.c:27: arch/x86/include/asm/uaccess_32.h: In function 'parse_command.part.1': arch/x86/include/asm/uaccess_32.h:211:26: warning: call to 'copy_from_user_overflow' declared with attribute warning: copy_from_user() buffer size is not provably correct [enabled by default] Full randconfig file is attached. -- ~Randy # # Automatically generated file; DO NOT EDIT. # Linux/i386 3.8.0-mm1 Kernel Configuration # # CONFIG_64BIT is not set CONFIG_X86_32=y CONFIG_X86=y CONFIG_INSTRUCTION_DECODER=y CONFIG_OUTPUT_FORMAT="elf32-i386" CONFIG_ARCH_DEFCONFIG="arch/x86/configs/i386_defconfig" CONFIG_LOCKDEP_SUPPORT=y CONFIG_STACKTRACE_SUPPORT=y CONFIG_HAVE_LATENCYTOP_SUPPORT=y CONFIG_MMU=y CONFIG_NEED_DMA_MAP_STATE=y CONFIG_NEED_SG_DMA_LENGTH=y CONFIG_GENERIC_ISA_DMA=y CONFIG_GENERIC_BUG=y CONFIG_GENERIC_HWEIGHT=y CONFIG_GENERIC_GPIO=y CONFIG_ARCH_MAY_HAVE_PC_FDC=y CONFIG_RWSEM_XCHGADD_ALGORITHM=y CONFIG_GENERIC_CALIBRATE_DELAY=y CONFIG_ARCH_HAS_CPU_RELAX=y CONFIG_ARCH_HAS_DEFAULT_IDLE=y CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y CONFIG_ARCH_HAS_CPU_AUTOPROBE=y CONFIG_HAVE_SETUP_PER_CPU_AREA=y CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK=y CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK=y CONFIG_ARCH_HIBERNATION_POSSIBLE=y CONFIG_ARCH_SUSPEND_POSSIBLE=y # CONFIG_ZONE_DMA32 is not set # CONFIG_AUDIT_ARCH is not set CONFIG_ARCH_SUPPORTS_OPTIMIZED_INLINING=y CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y CONFIG_ARCH_HWEIGHT_CFLAGS="-fcall-saved-ecx -fcall-saved-edx" CONFIG_ARCH_SUPPORTS_UPROBES=y CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config" CONFIG_CONSTRUCTORS=y CONFIG_IRQ_WORK=y CONFIG_BUILDTIME_EXTABLE_SORT=y # # General setup # CONFIG_EXPERIMENTAL=y CONFIG_BROKEN_ON_SMP=y CONFIG_INIT_ENV_ARG_LIMIT=32 CONFIG_CROSS_COMPILE="" CONFIG_LOCALVERSION="" # CONFIG_LOCALVERSION_AUTO is not set CONFIG_HAVE_KERNEL_GZIP=y CONFIG_HAVE_KERNEL_BZIP2=y CONFIG_HAVE_KERNEL_LZMA=y CONFIG_HAVE_KERNEL_XZ=y CONFIG_HAVE_KERNEL_LZO=y # CONFIG_KERNEL_GZIP is not set # CONFIG_KERNEL_BZIP2 is not set # CONFIG_KERNEL_LZMA is not set CONFIG_KERNEL_XZ=y # CONFIG_KERNEL_LZO is not set CONFIG_DEFAULT_HOSTNAME="(none)" # CONFIG_SWAP is not set # CONFIG_SYSVIPC is not set CONFIG_FHANDLE=y CONFIG_HAVE_GENERIC_HARDIRQS=y # # IRQ subsystem # CONFIG_GENERIC_HARDIRQS=y CONFIG_GENERIC_IRQ_PROBE=y CONFIG_GENERIC_IRQ_SHOW=y CONFIG_IRQ_DOMAIN=y # CONFIG_IRQ_DOMAIN_DEBUG is not set CONFIG_IRQ_FORCED_THREADING=y CONFIG_SPARSE_IRQ=y CONFIG_CLOCKSOURCE_WATCHDOG=y CONFIG_ALWAYS_USE_PERSISTENT_CLOCK=y CONFIG_KTIME_SCALAR=y CONFIG_GENERIC_CLOCKEVENTS=y CONFIG_GENERIC_CLOCKEVENTS_BUILD=y CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y CONFIG_GENERIC_CLOCKEVENTS_MIN_ADJUST=y CONFIG_GENERIC_CMOS_UPDATE=y # # Timers subsystem # # CONFIG_NO_HZ is not set # CONFIG_HIGH_RES_TIMERS is not set # # CPU/Task time and stats accounting # # CONFIG_TICK_CPU_ACCOUNTING is not set CONFIG_IRQ_TIME_ACCOUNTING=y CONFIG_BSD_PROCESS_ACCT=y CONFIG_BSD_PROCESS_ACCT_V3=y # # RCU Subsystem # CONFIG_TREE_PREEMPT_RCU=y # CONFIG_TINY_PREEMPT_RCU is not set CONFIG_PREEMPT_RCU=y CONFIG_RCU_STALL_COMMON=y CONFIG_RCU_FANOUT=32 CONFIG_RCU_FANOUT_LEAF=16 # CONFIG_RCU_FANOUT_EXACT is not set # CONFIG_TREE_RCU_TRACE is not set CONFIG_RCU_BOOST=y CONFIG_RCU_BOOST_PRIO=1 CONFIG_RCU_BOOST_DELAY=500 CONFIG_RCU_NOCB_CPU=y # CONFIG_IKCONFIG is not set CONFIG_LOG_BUF_SHIFT=17 CONFIG_HAVE_UNSTABLE_SCHED_CLOCK=y CONFIG_ARCH_SUPPORTS_NUMA_BALANCING=y CONFIG_ARCH_WANTS_PROT_NUMA_PROT_NONE=y CONFIG_CGROUPS=y CONFIG_CGROUP_DEBUG=y CONFIG_CGROUP_FREEZER=y CONFIG_CGROUP_DEVICE=y # CONFIG_CPUSETS is not set # CONFIG_CGROUP_CPUACCT is not set CONFIG_RESOURCE_COUNTERS=y CONFIG_MEMCG=y CONFIG_MEMCG_KMEM=y # CONFIG_MEMCG_DEBUG_ASYNC_DESTROY is not set CONFIG_CGROUP_PERF=y CONFIG_CGROUP_SCHED=y CONFIG_FAIR_GROUP_SCHED=y # CONFIG_CFS_BANDWIDTH is not set # CONFIG_RT_GROUP_SCHED is not set CONFIG_BLK_CGROUP=y # CONFIG_DEBUG_BLK_CGROUP is not set CONFIG_CHECKPOINT_RESTORE=y CONFIG_NAMESPACES=y CONFIG_UTS_NS=y CONFIG_USER_NS=y # CONFIG_PID_NS is not set CONFIG_UIDGID_CONVERTED=y CONFIG_UIDGID_STRICT_TYPE_CHECKS=y CONFIG_SCHED_AUTOGROUP=y CONFIG_MM_OWNER=y CONFIG_SYSFS_DEPRECATED=y # CONFIG_SYSFS_DEPRECATED_V2 is not set # CONFIG_RELAY is not set # CONFIG_BLK_DEV_INITRD is not set CONFIG_CC_OPTIMIZE_FOR_SIZE=y CONFIG_ANON_INODES=y CONFIG_EXPERT=y CONFIG_HAVE_UID16=y CONFIG_UID16=y CONFIG_SYSCTL_EXCEPTION_TRACE=y CONFIG_KALLSYMS=y CONFIG_KALLSYMS_ALL=y
Re: mmotm 2013-03-01-15-50 uploaded (strict user copy)
On 03/01/13 15:51, a...@linux-foundation.org wrote: The mm-of-the-moment snapshot 2013-03-01-15-50 has been uploaded to http://www.ozlabs.org/~akpm/mmotm/ on i386: ERROR: copy_from_user_overflow [fs/binfmt_misc.ko] undefined! which I don't understand. lib/usercopy.o is built and building binfmt_misc.c says: CC [M] fs/binfmt_misc.o In file included from arch/x86/include/asm/uaccess.h:537:0, from include/linux/uaccess.h:5, from include/linux/highmem.h:8, from include/linux/pagemap.h:10, from fs/binfmt_misc.c:27: arch/x86/include/asm/uaccess_32.h: In function 'parse_command.part.1': arch/x86/include/asm/uaccess_32.h:211:26: warning: call to 'copy_from_user_overflow' declared with attribute warning: copy_from_user() buffer size is not provably correct [enabled by default] Full randconfig file is attached. -- ~Randy # # Automatically generated file; DO NOT EDIT. # Linux/i386 3.8.0-mm1 Kernel Configuration # # CONFIG_64BIT is not set CONFIG_X86_32=y CONFIG_X86=y CONFIG_INSTRUCTION_DECODER=y CONFIG_OUTPUT_FORMAT=elf32-i386 CONFIG_ARCH_DEFCONFIG=arch/x86/configs/i386_defconfig CONFIG_LOCKDEP_SUPPORT=y CONFIG_STACKTRACE_SUPPORT=y CONFIG_HAVE_LATENCYTOP_SUPPORT=y CONFIG_MMU=y CONFIG_NEED_DMA_MAP_STATE=y CONFIG_NEED_SG_DMA_LENGTH=y CONFIG_GENERIC_ISA_DMA=y CONFIG_GENERIC_BUG=y CONFIG_GENERIC_HWEIGHT=y CONFIG_GENERIC_GPIO=y CONFIG_ARCH_MAY_HAVE_PC_FDC=y CONFIG_RWSEM_XCHGADD_ALGORITHM=y CONFIG_GENERIC_CALIBRATE_DELAY=y CONFIG_ARCH_HAS_CPU_RELAX=y CONFIG_ARCH_HAS_DEFAULT_IDLE=y CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y CONFIG_ARCH_HAS_CPU_AUTOPROBE=y CONFIG_HAVE_SETUP_PER_CPU_AREA=y CONFIG_NEED_PER_CPU_EMBED_FIRST_CHUNK=y CONFIG_NEED_PER_CPU_PAGE_FIRST_CHUNK=y CONFIG_ARCH_HIBERNATION_POSSIBLE=y CONFIG_ARCH_SUSPEND_POSSIBLE=y # CONFIG_ZONE_DMA32 is not set # CONFIG_AUDIT_ARCH is not set CONFIG_ARCH_SUPPORTS_OPTIMIZED_INLINING=y CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y CONFIG_ARCH_HWEIGHT_CFLAGS=-fcall-saved-ecx -fcall-saved-edx CONFIG_ARCH_SUPPORTS_UPROBES=y CONFIG_DEFCONFIG_LIST=/lib/modules/$UNAME_RELEASE/.config CONFIG_CONSTRUCTORS=y CONFIG_IRQ_WORK=y CONFIG_BUILDTIME_EXTABLE_SORT=y # # General setup # CONFIG_EXPERIMENTAL=y CONFIG_BROKEN_ON_SMP=y CONFIG_INIT_ENV_ARG_LIMIT=32 CONFIG_CROSS_COMPILE= CONFIG_LOCALVERSION= # CONFIG_LOCALVERSION_AUTO is not set CONFIG_HAVE_KERNEL_GZIP=y CONFIG_HAVE_KERNEL_BZIP2=y CONFIG_HAVE_KERNEL_LZMA=y CONFIG_HAVE_KERNEL_XZ=y CONFIG_HAVE_KERNEL_LZO=y # CONFIG_KERNEL_GZIP is not set # CONFIG_KERNEL_BZIP2 is not set # CONFIG_KERNEL_LZMA is not set CONFIG_KERNEL_XZ=y # CONFIG_KERNEL_LZO is not set CONFIG_DEFAULT_HOSTNAME=(none) # CONFIG_SWAP is not set # CONFIG_SYSVIPC is not set CONFIG_FHANDLE=y CONFIG_HAVE_GENERIC_HARDIRQS=y # # IRQ subsystem # CONFIG_GENERIC_HARDIRQS=y CONFIG_GENERIC_IRQ_PROBE=y CONFIG_GENERIC_IRQ_SHOW=y CONFIG_IRQ_DOMAIN=y # CONFIG_IRQ_DOMAIN_DEBUG is not set CONFIG_IRQ_FORCED_THREADING=y CONFIG_SPARSE_IRQ=y CONFIG_CLOCKSOURCE_WATCHDOG=y CONFIG_ALWAYS_USE_PERSISTENT_CLOCK=y CONFIG_KTIME_SCALAR=y CONFIG_GENERIC_CLOCKEVENTS=y CONFIG_GENERIC_CLOCKEVENTS_BUILD=y CONFIG_GENERIC_CLOCKEVENTS_BROADCAST=y CONFIG_GENERIC_CLOCKEVENTS_MIN_ADJUST=y CONFIG_GENERIC_CMOS_UPDATE=y # # Timers subsystem # # CONFIG_NO_HZ is not set # CONFIG_HIGH_RES_TIMERS is not set # # CPU/Task time and stats accounting # # CONFIG_TICK_CPU_ACCOUNTING is not set CONFIG_IRQ_TIME_ACCOUNTING=y CONFIG_BSD_PROCESS_ACCT=y CONFIG_BSD_PROCESS_ACCT_V3=y # # RCU Subsystem # CONFIG_TREE_PREEMPT_RCU=y # CONFIG_TINY_PREEMPT_RCU is not set CONFIG_PREEMPT_RCU=y CONFIG_RCU_STALL_COMMON=y CONFIG_RCU_FANOUT=32 CONFIG_RCU_FANOUT_LEAF=16 # CONFIG_RCU_FANOUT_EXACT is not set # CONFIG_TREE_RCU_TRACE is not set CONFIG_RCU_BOOST=y CONFIG_RCU_BOOST_PRIO=1 CONFIG_RCU_BOOST_DELAY=500 CONFIG_RCU_NOCB_CPU=y # CONFIG_IKCONFIG is not set CONFIG_LOG_BUF_SHIFT=17 CONFIG_HAVE_UNSTABLE_SCHED_CLOCK=y CONFIG_ARCH_SUPPORTS_NUMA_BALANCING=y CONFIG_ARCH_WANTS_PROT_NUMA_PROT_NONE=y CONFIG_CGROUPS=y CONFIG_CGROUP_DEBUG=y CONFIG_CGROUP_FREEZER=y CONFIG_CGROUP_DEVICE=y # CONFIG_CPUSETS is not set # CONFIG_CGROUP_CPUACCT is not set CONFIG_RESOURCE_COUNTERS=y CONFIG_MEMCG=y CONFIG_MEMCG_KMEM=y # CONFIG_MEMCG_DEBUG_ASYNC_DESTROY is not set CONFIG_CGROUP_PERF=y CONFIG_CGROUP_SCHED=y CONFIG_FAIR_GROUP_SCHED=y # CONFIG_CFS_BANDWIDTH is not set # CONFIG_RT_GROUP_SCHED is not set CONFIG_BLK_CGROUP=y # CONFIG_DEBUG_BLK_CGROUP is not set CONFIG_CHECKPOINT_RESTORE=y CONFIG_NAMESPACES=y CONFIG_UTS_NS=y CONFIG_USER_NS=y # CONFIG_PID_NS is not set CONFIG_UIDGID_CONVERTED=y CONFIG_UIDGID_STRICT_TYPE_CHECKS=y CONFIG_SCHED_AUTOGROUP=y CONFIG_MM_OWNER=y CONFIG_SYSFS_DEPRECATED=y # CONFIG_SYSFS_DEPRECATED_V2 is not set # CONFIG_RELAY is not set # CONFIG_BLK_DEV_INITRD is not set CONFIG_CC_OPTIMIZE_FOR_SIZE=y CONFIG_ANON_INODES=y CONFIG_EXPERT=y CONFIG_HAVE_UID16=y CONFIG_UID16=y CONFIG_SYSCTL_EXCEPTION_TRACE=y CONFIG_KALLSYMS=y CONFIG_KALLSYMS_ALL=y CONFIG_HOTPLUG=y # CONFIG_PRINTK
Re: mmotm 2013-03-01-15-50 uploaded (strict user copy)
On 03/01/13 19:00, Randy Dunlap wrote: On 03/01/13 15:51, a...@linux-foundation.org wrote: The mm-of-the-moment snapshot 2013-03-01-15-50 has been uploaded to http://www.ozlabs.org/~akpm/mmotm/ on i386: ERROR: copy_from_user_overflow [fs/binfmt_misc.ko] undefined! which I don't understand. lib/usercopy.o is built and building binfmt_misc.c says: CC [M] fs/binfmt_misc.o In file included from arch/x86/include/asm/uaccess.h:537:0, from include/linux/uaccess.h:5, from include/linux/highmem.h:8, from include/linux/pagemap.h:10, from fs/binfmt_misc.c:27: arch/x86/include/asm/uaccess_32.h: In function 'parse_command.part.1': arch/x86/include/asm/uaccess_32.h:211:26: warning: call to 'copy_from_user_overflow' declared with attribute warning: copy_from_user() buffer size is not provably correct [enabled by default] Hm.. That's because it's part of lib and not obj, right? diff --git a/lib/Makefile b/lib/Makefile index 59fabd0..4c55104 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -15,7 +15,7 @@ lib-y := ctype.o string.o vsprintf.o cmdline.o \ is_single_threaded.o plist.o decompress.o kobject_uevent.o \ earlycpio.o percpu-refcount.o -lib-$(CONFIG_ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS) += usercopy.o +obj-$(CONFIG_ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS) += usercopy.o lib-$(CONFIG_MMU) += ioremap.o lib-$(CONFIG_SMP) += cpumask.o -- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: mmotm 2013-03-01-15-50 uploaded (strict user copy)
On 03/01/13 19:42, Stephen Boyd wrote: On 03/01/13 19:00, Randy Dunlap wrote: On 03/01/13 15:51, a...@linux-foundation.org wrote: The mm-of-the-moment snapshot 2013-03-01-15-50 has been uploaded to http://www.ozlabs.org/~akpm/mmotm/ on i386: ERROR: copy_from_user_overflow [fs/binfmt_misc.ko] undefined! which I don't understand. lib/usercopy.o is built and building binfmt_misc.c says: CC [M] fs/binfmt_misc.o In file included from arch/x86/include/asm/uaccess.h:537:0, from include/linux/uaccess.h:5, from include/linux/highmem.h:8, from include/linux/pagemap.h:10, from fs/binfmt_misc.c:27: arch/x86/include/asm/uaccess_32.h: In function 'parse_command.part.1': arch/x86/include/asm/uaccess_32.h:211:26: warning: call to 'copy_from_user_overflow' declared with attribute warning: copy_from_user() buffer size is not provably correct [enabled by default] Hm.. That's because it's part of lib and not obj, right? diff --git a/lib/Makefile b/lib/Makefile index 59fabd0..4c55104 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -15,7 +15,7 @@ lib-y := ctype.o string.o vsprintf.o cmdline.o \ is_single_threaded.o plist.o decompress.o kobject_uevent.o \ earlycpio.o percpu-refcount.o -lib-$(CONFIG_ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS) += usercopy.o +obj-$(CONFIG_ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS) += usercopy.o lib-$(CONFIG_MMU) += ioremap.o lib-$(CONFIG_SMP) += cpumask.o I'm a little confused though because it is lib-y on x86 before my patch. -- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: mmotm 2013-03-01-15-50 uploaded (strict user copy)
On 03/01/13 20:16, Stephen Boyd wrote: On 03/01/13 19:42, Stephen Boyd wrote: On 03/01/13 19:00, Randy Dunlap wrote: On 03/01/13 15:51, a...@linux-foundation.org wrote: The mm-of-the-moment snapshot 2013-03-01-15-50 has been uploaded to http://www.ozlabs.org/~akpm/mmotm/ on i386: ERROR: copy_from_user_overflow [fs/binfmt_misc.ko] undefined! which I don't understand. lib/usercopy.o is built and building binfmt_misc.c says: CC [M] fs/binfmt_misc.o In file included from arch/x86/include/asm/uaccess.h:537:0, from include/linux/uaccess.h:5, from include/linux/highmem.h:8, from include/linux/pagemap.h:10, from fs/binfmt_misc.c:27: arch/x86/include/asm/uaccess_32.h: In function 'parse_command.part.1': arch/x86/include/asm/uaccess_32.h:211:26: warning: call to 'copy_from_user_overflow' declared with attribute warning: copy_from_user() buffer size is not provably correct [enabled by default] Hm.. That's because it's part of lib and not obj, right? Yes, this fixes the build error. diff --git a/lib/Makefile b/lib/Makefile index 59fabd0..4c55104 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -15,7 +15,7 @@ lib-y := ctype.o string.o vsprintf.o cmdline.o \ is_single_threaded.o plist.o decompress.o kobject_uevent.o \ earlycpio.o percpu-refcount.o -lib-$(CONFIG_ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS) += usercopy.o +obj-$(CONFIG_ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS) += usercopy.o lib-$(CONFIG_MMU) += ioremap.o lib-$(CONFIG_SMP) += cpumask.o I'm a little confused though because it is lib-y on x86 before my patch. binfmt_misc is built as a loadable module in my config. It must be the only user of copy_from_user_overflow() in this config. I guess that it would also fail prior to your patch, but I haven't tested it. Anyway, your patch above is correct and needed. thanks, -- ~Randy -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
