Buildresult: mpe/s390-defconfig/s390x-gcc4.6 built on May 24 2018, 01:34

kisskb

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Status:	OK
Date/Time:	May 24 2018, 01:34
Duration:	0:01:42.164569
Builder:	ka2
Revision:	powerpc/64s: Add support for a store forwarding barrier at kernel entry/exit (`2e2e7910e6eccaed0c3bce8125e60e16d19dfc29)`
Target:	mpe/s390-defconfig/s390x-gcc4.6
Branch:	mpe
Compiler:	s390x-gcc4.6 (s390x-linux-gcc (GCC) 4.6.3)
Config:	defconfig (download)
Log:	Download original Possible warnings (4) drivers/net/tun.c:1489:22: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized] drivers/net/tun.c:1402:46: warning: 'linear' may be used uninitialized in this function [-Wuninitialized] kernel/printk/printk.c:186:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] kernel/cgroup/cgroup-v1.c:1268:20: warning: 'root' may be used uninitialized in this function [-Wuninitialized] Full Log # git rev-parse -q --verify 2e2e7910e6eccaed0c3bce8125e60e16d19dfc29^{commit} 2e2e7910e6eccaed0c3bce8125e60e16d19dfc29 already have revision, skipping fetch # git checkout -q -f -B kisskb 2e2e7910e6eccaed0c3bce8125e60e16d19dfc29 # git clean -qxdf # < git log -1 # commit 2e2e7910e6eccaed0c3bce8125e60e16d19dfc29 # 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> # (cherry picked from commit a048a07d7f4535baa4cbad6bc024f175317ab938) # < /opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-gcc --version # < git log --format=%s --max-count=1 2e2e7910e6eccaed0c3bce8125e60e16d19dfc29 # < make -s -j 48 ARCH=s390 O=/kisskb/build/mpe_s390-defconfig_s390x CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux- defconfig # make -s -j 48 ARCH=s390 O=/kisskb/build/mpe_s390-defconfig_s390x CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux- /kisskb/src/drivers/net/tun.c: In function 'tun_get_user': /kisskb/src/drivers/net/tun.c:1489:22: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/tun.c:1402:46: warning: 'linear' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl': /kisskb/src/kernel/printk/printk.c:186:16: 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:1268:20: warning: 'root' may be used uninitialized in this function [-Wuninitialized] Completed OK # rm -rf /kisskb/build/mpe_s390-defconfig_s390x # Build took: 0:01:42.164569

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