Buildresult: powerpc-next/x86_64-defconfig/x86_64-gcc4.6 built on Jul 10 2018, 18:47

kisskb

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Status:	OK
Date/Time:	Jul 10 2018, 18:47
Duration:	0:02:22.278477
Builder:	ka2
Revision:	powerpc/uaccess: Enable get_user(u64, *p) on 32-bit (`397758385ba96da48a96f82cf3521f994f3a78b3)`
Target:	powerpc-next/x86_64-defconfig/x86_64-gcc4.6
Branch:	powerpc-next
Compiler:	x86_64-gcc4.6 (x86_64-linux-gcc (GCC) 4.6.3)
Config:	defconfig (download)
Log:	Download original Possible warnings (16) kernel/printk/printk.c:183:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] kernel/cgroup/cgroup-v1.c:1256:20: warning: 'root' may be used uninitialized in this function [-Wuninitialized] arch/x86/kernel/apic/io_apic.c:1033:6: warning: 'irq' may be used uninitialized in this function [-Wuninitialized] kernel/trace/trace.o: warning: objtool: tracing_start()+0x6d: unreachable instruction kernel/rcu/tree.o: warning: objtool: rcu_init()+0x1c5: unreachable instruction sound/hda/hdac_regmap.c:282:16: warning: 'err' may be used uninitialized in this function [-Wuninitialized] mm/vmstat.c:89:5: warning: 'oldval' may be used uninitialized in this function [-Wuninitialized] arch/x86/kernel/e820.c:653:2: warning: 'gapstart' may be used uninitialized in this function [-Wuninitialized] mm/hugetlb.c:1433:5: warning: 'page' may be used uninitialized in this function [-Wuninitialized] drivers/base/regmap/regmap.c:2497:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] drivers/base/regmap/regmap.c:1819:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized] drivers/clk/clk.o: warning: objtool: clk_prepare_unlock()+0x44: unreachable instruction net/mac80211/mlme.c:1353:3: warning: 'pwr_level_cisco' may be used uninitialized in this function [-Wuninitialized] drivers/dma-buf/reservation.c:207:2: warning: 'k' may be used uninitialized in this function [-Wuninitialized] fs/aio.o: warning: objtool: aio_nr_sub()+0x2d: unreachable instruction Full Log # git rev-parse -q --verify 397758385ba96da48a96f82cf3521f994f3a78b3^{commit} 397758385ba96da48a96f82cf3521f994f3a78b3 already have revision, skipping fetch # git checkout -q -f -B kisskb 397758385ba96da48a96f82cf3521f994f3a78b3 # git clean -qxdf # < git log -1 # commit 397758385ba96da48a96f82cf3521f994f3a78b3 # Author: Michael Ellerman <mpe@ellerman.id.au> # Date: Tue Jul 10 16:20:56 2018 +1000 # # powerpc/uaccess: Enable get_user(u64, *p) on 32-bit # # Currently if you build a 32-bit powerpc kernel and use get_user() to # load a u64 value it will fail to build with eg: # # kernel/rseq.o: In function `rseq_get_rseq_cs': # kernel/rseq.c:123: undefined reference to `__get_user_bad' # # This is hitting the check in __get_user_size() that makes sure the # size we're copying doesn't exceed the size of the destination: # # #define __get_user_size(x, ptr, size, retval) # do { # retval = 0; # __chk_user_ptr(ptr); # if (size > sizeof(x)) # (x) = __get_user_bad(); # # Which doesn't immediately make sense because the size of the # destination is u64, but it's not really, because __get_user_check() # etc. internally create an unsigned long and copy into that: # # #define __get_user_check(x, ptr, size) # ({ # long __gu_err = -EFAULT; # unsigned long __gu_val = 0; # # The problem being that on 32-bit unsigned long is not big enough to # hold a u64. We can fix this with a trick from hpa in the x86 code, we # statically check the type of x and set the type of __gu_val to either # unsigned long or unsigned long long. # # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # < /opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version # < git log --format=%s --max-count=1 397758385ba96da48a96f82cf3521f994f3a78b3 # < make -s -j 48 ARCH=x86 O=/kisskb/build/powerpc-next_x86_64_defconfig_x86_64 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux- x86_64_defconfig # make -s -j 48 ARCH=x86 O=/kisskb/build/powerpc-next_x86_64_defconfig_x86_64 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux- /kisskb/src/net/Makefile:24: CC cannot link executables. Skipping bpfilter. /kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl': /kisskb/src/kernel/printk/printk.c:183:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/kernel/cgroup/cgroup-v1.c: In function 'cgroup1_mount': /kisskb/src/kernel/cgroup/cgroup-v1.c:1256:20: warning: 'root' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/net/Makefile:24: CC cannot link executables. Skipping bpfilter. /kisskb/src/arch/x86/kernel/apic/io_apic.c: In function 'mp_map_pin_to_irq': /kisskb/src/arch/x86/kernel/apic/io_apic.c:1033:6: warning: 'irq' may be used uninitialized in this function [-Wuninitialized] kernel/trace/trace.o: warning: objtool: tracing_start()+0x6d: unreachable instruction kernel/rcu/tree.o: warning: objtool: rcu_init()+0x1c5: unreachable instruction /kisskb/src/sound/hda/hdac_regmap.c: In function 'hda_reg_write': /kisskb/src/sound/hda/hdac_regmap.c:282:16: warning: 'err' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/mm/vmstat.c: In function 'sysctl_vm_numa_stat_handler': /kisskb/src/mm/vmstat.c:89:5: warning: 'oldval' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/arch/x86/kernel/e820.c: In function 'e820__setup_pci_gap': /kisskb/src/arch/x86/kernel/e820.c:653:2: warning: 'gapstart' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/mm/hugetlb.c: In function 'alloc_pool_huge_page': /kisskb/src/mm/hugetlb.c:1433:5: warning: 'page' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/base/regmap/regmap.c: In function 'regmap_raw_read': /kisskb/src/drivers/base/regmap/regmap.c:2497:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/base/regmap/regmap.c: In function '_regmap_raw_write': /kisskb/src/drivers/base/regmap/regmap.c:1819:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/proc/inode.c: In function 'proc_reg_open': /kisskb/src/include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/proc/inode.c:339:21: note: 'pdeo' was declared here drivers/clk/clk.o: warning: objtool: clk_prepare_unlock()+0x44: unreachable instruction /kisskb/src/net/mac80211/mlme.c: In function 'ieee80211_rx_mgmt_beacon': /kisskb/src/net/mac80211/mlme.c:1353:3: warning: 'pwr_level_cisco' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/net/mac80211/mlme.c:1310:6: note: 'pwr_level_cisco' was declared here /kisskb/src/drivers/dma-buf/reservation.c: In function 'reservation_object_add_shared_fence': /kisskb/src/drivers/dma-buf/reservation.c:207:2: warning: 'k' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/dma-buf/reservation.c:160:17: note: 'k' was declared here fs/aio.o: warning: objtool: aio_nr_sub()+0x2d: unreachable instruction Completed OK # rm -rf /kisskb/build/powerpc-next_x86_64_defconfig_x86_64 # Build took: 0:02:22.278477

© Michael Ellerman 2006-2018.