# 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/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-ld --version
# < git log --format=%s --max-count=1 ba422731316dde1e22dcc84b83c7349dc0ce1c3c
# < make -s -j 80 ARCH=arm O=/kisskb/build/linus_acs5k_defconfig_arm CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-  acs5k_defconfig
# make -s -j 80 ARCH=arm O=/kisskb/build/linus_acs5k_defconfig_arm CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-  
/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
/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/drivers/base/regmap/regmap.c: In function 'regmap_raw_read':
/kisskb/src/drivers/base/regmap/regmap.c:2594:6: 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:1855:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/ipv4/ip_output.c: In function '__ip_append_data':
/kisskb/src/include/linux/skbuff.h:1338:6: warning: 'extra_uref' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/ipv4/ip_output.c:885:14: note: 'extra_uref' was declared here
/kisskb/src/drivers/i2c/i2c-core-base.c: In function 'i2c_generic_scl_recovery':
/kisskb/src/drivers/i2c/i2c-core-base.c:235:5: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
Completed OK
# rm -rf /kisskb/build/linus_acs5k_defconfig_arm
# Build took: 0:00:33.154168