Buildresult: linus-rand/x86_64-randconfig/x86_64-gcc8 built on Dec 20 2020, 09:18

kisskb

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Status:	OK
Date/Time:	Dec 20 2020, 09:18
Duration:	0:01:39.362026
Builder:	ka4
Revision:	Merge tag 'close-range-cloexec-unshare-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux (`467f8165a2b0e6accf3d0dd9c8089b1dbde29f7f)`
Target:	linus-rand/x86_64-randconfig/x86_64-gcc8
Branch:	linus-rand
Compiler:	x86_64-gcc8 (x86_64-linux-gcc (GCC) 8.1.0 / GNU ld (GNU Binutils) 2.30)
Config:	randconfig (download)
Log:	Download original Possible warnings (1) vmlinux.o: warning: objtool: __do_fast_syscall_32()+0x33: call to syscall_enter_from_user_mode_work() leaves .noinstr.text section Full Log # git rev-parse -q --verify 467f8165a2b0e6accf3d0dd9c8089b1dbde29f7f^{commit} 467f8165a2b0e6accf3d0dd9c8089b1dbde29f7f already have revision, skipping fetch # git checkout -q -f -B kisskb 467f8165a2b0e6accf3d0dd9c8089b1dbde29f7f # git clean -qxdf # < git log -1 # commit 467f8165a2b0e6accf3d0dd9c8089b1dbde29f7f # Merge: 3872f516aab3 6abc20f8f879 # Author: Linus Torvalds <torvalds@linux-foundation.org> # Date: Sat Dec 19 13:03:12 2020 -0800 # # Merge tag 'close-range-cloexec-unshare-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux # # Pull close_range fix from Christian Brauner: # "syzbot reported a bug when asking close_range() to unshare the file # descriptor table and making all fds close-on-exec. # # If CLOSE_RANGE_UNSHARE the caller will receive a private file # descriptor table in case their file descriptor table is currently # shared before operating on the requested file descriptor range. # # For the case where the caller has requested all file descriptors to be # actually closed via e.g. close_range(3, ~0U, CLOSE_RANGE_UNSHARE) the # kernel knows that the caller does not need any of the file descriptors # anymore and will optimize the close operation by only copying all # files in the range from 0 to 3 and no others. # # However, if the caller requested CLOSE_RANGE_CLOEXEC together with # CLOSE_RANGE_UNSHARE the caller wants to still make use of the file # descriptors so the kernel needs to copy all of them and can't # optimize. # # The original patch didn't account for this and thus could cause oopses # as evidenced by the syzbot report because it assumed that all fds had # been copied. Fix this by handling the CLOSE_RANGE_CLOEXEC case and # copying all fds if the two flags are specified together. # # This should've been caught in the selftests but the original patch # didn't cover this case and I didn't catch it during review. So in # addition to the bugfix I'm also adding selftests. They will reliably # reproduce the bug on a non-fixed kernel and allows us to catch # regressions and verify correct behavior. # # Note, the kernel selftest tree contained a bunch of changes that made # the original selftest fail to compile so there are small fixups in # here make them compile without warnings" # # * tag 'close-range-cloexec-unshare-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux: # selftests/core: add regression test for CLOSE_RANGE_UNSHARE \| CLOSE_RANGE_CLOEXEC # selftests/core: add test for CLOSE_RANGE_UNSHARE \| CLOSE_RANGE_CLOEXEC # selftests/core: handle missing syscall number for close_range # selftests/core: fix close_range_test build after XFAIL removal # close_range: unshare all fds for CLOSE_RANGE_UNSHARE \| CLOSE_RANGE_CLOEXEC # < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-ld --version # < git log --format=%s --max-count=1 467f8165a2b0e6accf3d0dd9c8089b1dbde29f7f # < make -s -j 120 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux- randconfig KCONFIG_SEED=0xF605188B # Added to kconfig CONFIG_STANDALONE=y # Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y # Added to kconfig CONFIG_CC_STACKPROTECTOR_STRONG=n # Added to kconfig CONFIG_GCC_PLUGINS=n # Added to kconfig CONFIG_GCC_PLUGIN_CYC_COMPLEXITY=n # Added to kconfig CONFIG_GCC_PLUGIN_SANCOV=n # Added to kconfig CONFIG_GCC_PLUGIN_LATENT_ENTROPY=n # yes \n \| make -s -j 120 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux- oldconfig yes: standard output: Broken pipe # make -s -j 120 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux- vmlinux.o: warning: objtool: __do_fast_syscall_32()+0x33: call to syscall_enter_from_user_mode_work() leaves .noinstr.text section Completed OK # rm -rf /kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8 # Build took: 0:01:39.362026

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