Buildresult: mpe/pseries_le_defconfig+NO_NUMA/powerpc-gcc5 built on Apr 20 2019, 00:05

kisskb

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Status:	OK
Date/Time:	Apr 20 2019, 00:05
Duration:	0:02:53.058166
Builder:	ka2
Revision:	powerpc/32s: Implement Kernel Userspace Access Protection (`cb42033f5d172b5779b6c8301c65693ff6a0a778)`
Target:	mpe/pseries_le_defconfig+NO_NUMA/powerpc-gcc5
Branch:	mpe
Compiler:	powerpc-gcc5 (powerpc64-linux-gcc (GCC) 5.5.0 / GNU ld (GNU Binutils) 2.29.1.20170915)
Config:	pseries_le_defconfig+NO_NUMA (download)
Log:	Download original Possible warnings (9) <stdin>:1478:2: warning: #warning syscall pidfd_send_signal not implemented [-Wcpp] <stdin>:1481:2: warning: #warning syscall io_uring_setup not implemented [-Wcpp] <stdin>:1484:2: warning: #warning syscall io_uring_enter not implemented [-Wcpp] <stdin>:1487:2: warning: #warning syscall io_uring_register not implemented [-Wcpp] kernel/futex.c:1658:17: warning: 'oldval' may be used uninitialized in this function [-Wmaybe-uninitialized] net/netfilter/nf_nat_masquerade.c:15:21: warning: 'masq_refcnt6' defined but not used [-Wunused-variable] WARNING: vmlinux.o(.text+0x33fc): Section mismatch in reference from the variable __boot_from_prom to the function .init.text:prom_init() WARNING: vmlinux.o(.text+0x3628): Section mismatch in reference from the variable start_here_multiplatform to the function .init.text:early_setup() WARNING: vmlinux.o(.text+0x365c): Section mismatch in reference from the variable start_here_common to the function .init.text:start_kernel() Full Log # git rev-parse -q --verify cb42033f5d172b5779b6c8301c65693ff6a0a778^{commit} cb42033f5d172b5779b6c8301c65693ff6a0a778 already have revision, skipping fetch # git checkout -q -f -B kisskb cb42033f5d172b5779b6c8301c65693ff6a0a778 # git clean -qxdf # < git log -1 # commit cb42033f5d172b5779b6c8301c65693ff6a0a778 # Author: Christophe Leroy <christophe.leroy@c-s.fr> # Date: Mon Mar 11 08:30:38 2019 +0000 # # powerpc/32s: Implement Kernel Userspace Access Protection # # This patch implements Kernel Userspace Access Protection for # book3s/32. # # Due to limitations of the processor page protection capabilities, # the protection is only against writing. read protection cannot be # achieved using page protection. # # The previous patch modifies the page protection so that RW user # pages are RW for Key 0 and RO for Key 1, and it sets Key 0 for # both user and kernel. # # This patch changes userspace segment registers are set to Ku 0 # and Ks 1. When kernel needs to write to RW pages, the associated # segment register is then changed to Ks 0 in order to allow write # access to the kernel. # # In order to avoid having the read all segment registers when # locking/unlocking the access, some data is kept in the thread_struct # and saved on stack on exceptions. The field identifies both the # first unlocked segment and the first segment following the last # unlocked one. When no segment is unlocked, it contains value 0. # # As the hash_page() function is not able to easily determine if a # protfault is due to a bad kernel access to userspace, protfaults # need to be handled by handle_page_fault when KUAP is set. # # Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> # [mpe: Drop allow_read/write_to/from_user() as they're now in kup.h, # and adapt allow_user_access() to do nothing when to == NULL] # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version # < git log --format=%s --max-count=1 cb42033f5d172b5779b6c8301c65693ff6a0a778 # < make -s -j 48 ARCH=powerpc O=/kisskb/build/mpe_pseries_le_defconfig+NO_NUMA_ppc64le-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- pseries_le_defconfig # Added to kconfig CONFIG_NUMA=n # yes \n \| make -s -j 48 ARCH=powerpc O=/kisskb/build/mpe_pseries_le_defconfig+NO_NUMA_ppc64le-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- oldconfig yes: standard output: Broken pipe # make -s -j 48 ARCH=powerpc O=/kisskb/build/mpe_pseries_le_defconfig+NO_NUMA_ppc64le-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux- <stdin>:1478:2: warning: #warning syscall pidfd_send_signal not implemented [-Wcpp] <stdin>:1481:2: warning: #warning syscall io_uring_setup not implemented [-Wcpp] <stdin>:1484:2: warning: #warning syscall io_uring_enter not implemented [-Wcpp] <stdin>:1487:2: warning: #warning syscall io_uring_register not implemented [-Wcpp] /kisskb/src/kernel/futex.c: In function 'do_futex': /kisskb/src/kernel/futex.c:1658:17: warning: 'oldval' may be used uninitialized in this function [-Wmaybe-uninitialized] return oldval == cmparg; ^ /kisskb/src/kernel/futex.c:1633:6: note: 'oldval' was declared here int oldval, ret; ^ /kisskb/src/net/netfilter/nf_nat_masquerade.c:15:21: warning: 'masq_refcnt6' defined but not used [-Wunused-variable] static unsigned int masq_refcnt6 __read_mostly; ^ WARNING: vmlinux.o(.text+0x33fc): Section mismatch in reference from the variable __boot_from_prom to the function .init.text:prom_init() The function __boot_from_prom() references the function __init prom_init(). This is often because __boot_from_prom lacks a __init annotation or the annotation of prom_init is wrong. WARNING: vmlinux.o(.text+0x3628): Section mismatch in reference from the variable start_here_multiplatform to the function .init.text:early_setup() The function start_here_multiplatform() references the function __init early_setup(). This is often because start_here_multiplatform lacks a __init annotation or the annotation of early_setup is wrong. WARNING: vmlinux.o(.text+0x365c): Section mismatch in reference from the variable start_here_common to the function .init.text:start_kernel() The function start_here_common() references the function __init start_kernel(). This is often because start_here_common lacks a __init annotation or the annotation of start_kernel is wrong. Completed OK # rm -rf /kisskb/build/mpe_pseries_le_defconfig+NO_NUMA_ppc64le-gcc5 # Build took: 0:02:53.058166

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