Buildresult: linus/x86_64-allnoconfig/x86_64-gcc4.6 built on May 22 2018, 19:45

kisskb

Revisions | Branches | Compilers | Configs | Build Results | Build Failures |

Status:	OK
Date/Time:	May 22 2018, 19:45
Duration:	0:00:14.627463
Builder:	ka1
Revision:	powerpc/64s: Add support for a store forwarding barrier at kernel entry/exit (`a048a07d7f4535baa4cbad6bc024f175317ab938)`
Target:	linus/x86_64-allnoconfig/x86_64-gcc4.6
Branch:	linus
Compiler:	x86_64-gcc4.6 (x86_64-linux-gcc (GCC) 4.6.3)
Config:	allnoconfig (download)
Log:	Download original Possible warnings (3) kernel/printk/printk.c:183:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] arch/x86/kernel/e820.c:650:16: warning: 'gapstart' 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] Full Log # git rev-parse -q --verify a048a07d7f4535baa4cbad6bc024f175317ab938^{commit} a048a07d7f4535baa4cbad6bc024f175317ab938 already have revision, skipping fetch # git checkout -q -f -B kisskb a048a07d7f4535baa4cbad6bc024f175317ab938 # git clean -qxdf # < git log -1 # commit a048a07d7f4535baa4cbad6bc024f175317ab938 # Author: Nicholas Piggin <npiggin@gmail.com> # Date: Tue May 22 09:00:00 2018 +1000 # # powerpc/64s: Add support for a store forwarding barrier at kernel entry/exit # # On some CPUs we can prevent a vulnerability related to store-to-load # forwarding by preventing store forwarding between privilege domains, # by inserting a barrier in kernel entry and exit paths. # # This is known to be the case on at least Power7, Power8 and Power9 # powerpc CPUs. # # Barriers must be inserted generally before the first load after moving # to a higher privilege, and after the last store before moving to a # lower privilege, HV and PR privilege transitions must be protected. # # Barriers are added as patch sections, with all kernel/hypervisor entry # points patched, and the exit points to lower privilge levels patched # similarly to the RFI flush patching. # # Firmware advertisement is not implemented yet, so CPU flush types # are hard coded. # # Thanks to Michal Suchánek for bug fixes and review. # # Signed-off-by: Nicholas Piggin <npiggin@gmail.com> # Signed-off-by: Mauricio Faria de Oliveira <mauricfo@linux.vnet.ibm.com> # Signed-off-by: Michael Neuling <mikey@neuling.org> # Signed-off-by: Michal Suchánek <msuchanek@suse.de> # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> # < /opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version # < git log --format=%s --max-count=1 a048a07d7f4535baa4cbad6bc024f175317ab938 # < make -s -j 48 ARCH=x86_64 O=/kisskb/build/linus_x86_64-allnoconfig_x86_64 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux- allnoconfig # make -s -j 48 ARCH=x86_64 O=/kisskb/build/linus_x86_64-allnoconfig_x86_64 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux- /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/arch/x86/kernel/e820.c: In function 'e820__setup_pci_gap': /kisskb/src/arch/x86/kernel/e820.c:650:16: warning: 'gapstart' may be used uninitialized in this function [-Wuninitialized] /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] Completed OK # rm -rf /kisskb/build/linus_x86_64-allnoconfig_x86_64 # Build took: 0:00:14.627463

© Michael Ellerman 2006-2018.