Buildresult: linus/xtensa-defconfig/xtensa-gcc8 built on Mar 11 2022, 07:59

kisskb

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Status:	OK
Date/Time:	Mar 11 2022, 07:59
Duration:	0:00:16.446064
Builder:	ka4
Revision:	mm: gup: make fault_in_safe_writeable() use fixup_user_fault() (`fe673d3f5bf1fc50cdc4b754831db91a2ec10126)`
Target:	linus/xtensa-defconfig/xtensa-gcc8
Branch:	linus
Compiler:	xtensa-gcc8 (xtensa-linux-gcc.br_real (Buildroot 2016.11-git-00613-ge98b4dd) 5.4.0 / GNU ld (GNU Binutils) 2.26.1)
Config:	defconfig (download)
Log:	Download original No warnings found in log. Full Log # git rev-parse -q --verify fe673d3f5bf1fc50cdc4b754831db91a2ec10126^{commit} fe673d3f5bf1fc50cdc4b754831db91a2ec10126 already have revision, skipping fetch # git checkout -q -f -B kisskb fe673d3f5bf1fc50cdc4b754831db91a2ec10126 # git clean -qxdf # < git log -1 # commit fe673d3f5bf1fc50cdc4b754831db91a2ec10126 # Author: Linus Torvalds <torvalds@linux-foundation.org> # Date: Tue Mar 8 11:55:48 2022 -0800 # # mm: gup: make fault_in_safe_writeable() use fixup_user_fault() # # Instead of using GUP, make fault_in_safe_writeable() actually force a # 'handle_mm_fault()' using the same fixup_user_fault() machinery that # futexes already use. # # Using the GUP machinery meant that fault_in_safe_writeable() did not do # everything that a real fault would do, ranging from not auto-expanding # the stack segment, to not updating accessed or dirty flags in the page # tables (GUP sets those flags on the pages themselves). # # The latter causes problems on architectures (like s390) that do accessed # bit handling in software, which meant that fault_in_safe_writeable() # didn't actually do all the fault handling it needed to, and trying to # access the user address afterwards would still cause faults. # # Reported-and-tested-by: Andreas Gruenbacher <agruenba@redhat.com> # Fixes: cdd591fc86e3 ("iov_iter: Introduce fault_in_iov_iter_writeable") # Link: https://lore.kernel.org/all/CAHc6FU5nP+nziNGG0JAF1FUx-GV7kKFvM7aZuU_XD2_1v4vnvg@mail.gmail.com/ # Acked-by: David Hildenbrand <david@redhat.com> # Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> # < /opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux-gcc --version # < /opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux-ld --version # < git log --format=%s --max-count=1 fe673d3f5bf1fc50cdc4b754831db91a2ec10126 # < make -s -j 120 ARCH=xtensa O=/kisskb/build/linus_xtensa-defconfig_xtensa CROSS_COMPILE=/opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux- defconfig # < make -s -j 120 ARCH=xtensa O=/kisskb/build/linus_xtensa-defconfig_xtensa CROSS_COMPILE=/opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux- help # make -s -j 120 ARCH=xtensa O=/kisskb/build/linus_xtensa-defconfig_xtensa CROSS_COMPILE=/opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux- olddefconfig # make -s -j 120 ARCH=xtensa O=/kisskb/build/linus_xtensa-defconfig_xtensa CROSS_COMPILE=/opt/cross/kisskb/br-xtensa-full-2016.08-613-ge98b4dd/bin/xtensa-linux- Completed OK # rm -rf /kisskb/build/linus_xtensa-defconfig_xtensa # Build took: 0:00:16.446064

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