Buildresult: linus/s390-allnoconfig/s390x-gcc4.6 built on Jan 11 2019, 02:40

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Status:	OK
Date/Time:	Jan 11 2019, 02:40
Duration:	0:00:09.198191
Builder:	ka4
Revision:	mm/mmu_notifier: mm/rmap.c: Fix a mmu_notifier range bug in try_to_unmap_one (`ba422731316dde1e22dcc84b83c7349dc0ce1c3c)`
Target:	linus/s390-allnoconfig/s390x-gcc4.6
Branch:	linus
Compiler:	s390x-gcc4.6 (s390x-linux-gcc (GCC) 4.6.3 / GNU ld (GNU Binutils) 2.22)
Config:	allnoconfig (download)
Log:	Download original Possible warnings (3) kernel/printk/printk.c:186:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] arch/s390/mm/pgtable.c:413:15: warning: 'pmd_alloc_map' defined but not used [-Wunused-function] arch/s390/kernel/machine_kexec.c:145:22: warning: 'do_start_kdump' defined but not used [-Wunused-function] Full Log # git rev-parse -q --verify ba422731316dde1e22dcc84b83c7349dc0ce1c3c^{commit} ba422731316dde1e22dcc84b83c7349dc0ce1c3c already have revision, skipping fetch # git checkout -q -f -B kisskb ba422731316dde1e22dcc84b83c7349dc0ce1c3c # git clean -qxdf # < git log -1 # commit ba422731316dde1e22dcc84b83c7349dc0ce1c3c # Author: Sean Christopherson <sean.j.christopherson@intel.com> # Date: Wed Jan 9 16:51:17 2019 -0800 # # mm/mmu_notifier: mm/rmap.c: Fix a mmu_notifier range bug in try_to_unmap_one # # The conversion to use a structure for mmu_notifier_invalidate_range_*() # unintentionally changed the usage in try_to_unmap_one() to init the # 'struct mmu_notifier_range' with vma->vm_start instead of @address, # i.e. it invalidates the wrong address range. Revert to the correct # address range. # # Manifests as KVM use-after-free WARNINGs and subsequent "BUG: Bad page # state in process X" errors when reclaiming from a KVM guest due to KVM # removing the wrong pages from its own mappings. # # Reported-by: leozinho29_eu@hotmail.com # Reported-by: Mike Galbraith <efault@gmx.de> # Reported-and-tested-by: Adam Borowski <kilobyte@angband.pl> # Reviewed-by: Jérôme Glisse <jglisse@redhat.com> # Reviewed-by: Pankaj gupta <pagupta@redhat.com> # Cc: Christian König <christian.koenig@amd.com> # Cc: Jan Kara <jack@suse.cz> # Cc: Matthew Wilcox <mawilcox@microsoft.com> # Cc: Ross Zwisler <zwisler@kernel.org> # Cc: Dan Williams <dan.j.williams@intel.com> # Cc: Paolo Bonzini <pbonzini@redhat.com> # Cc: Radim Krčmář <rkrcmar@redhat.com> # Cc: Michal Hocko <mhocko@kernel.org> # Cc: Felix Kuehling <felix.kuehling@amd.com> # Cc: Ralph Campbell <rcampbell@nvidia.com> # Cc: John Hubbard <jhubbard@nvidia.com> # Cc: Andrew Morton <akpm@linux-foundation.org> # Fixes: ac46d4f3c432 ("mm/mmu_notifier: use structure for invalidate_range_start/end calls v2") # Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com> # Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> # < /opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-gcc --version # < /opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-ld --version # < git log --format=%s --max-count=1 ba422731316dde1e22dcc84b83c7349dc0ce1c3c # < make -s -j 120 ARCH=s390 O=/kisskb/build/linus_s390-allnoconfig_s390x CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux- allnoconfig # make -s -j 120 ARCH=s390 O=/kisskb/build/linus_s390-allnoconfig_s390x CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux- /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/arch/s390/mm/pgtable.c:413:15: warning: 'pmd_alloc_map' defined but not used [-Wunused-function] /kisskb/src/arch/s390/kernel/machine_kexec.c:145:22: warning: 'do_start_kdump' defined but not used [-Wunused-function] Completed OK # rm -rf /kisskb/build/linus_s390-allnoconfig_s390x # Build took: 0:00:09.198191

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