Buildresult: linus-rand/arm64-randconfig/arm64-gcc8 built on Aug 5 2020, 11:15

kisskb

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Status:	OK
Date/Time:	Aug 5 2020, 11:15
Duration:	0:06:20.976653
Builder:	blade4b
Revision:	Merge tag 'close-range-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux (`4f30a60aa78410496e5ffe632a371c00f0d83a8d)`
Target:	linus-rand/arm64-randconfig/arm64-gcc8
Branch:	linus-rand
Compiler:	arm64-gcc8 (aarch64-linux-gcc (GCC) 8.1.0 / GNU ld (GNU Binutils) 2.30)
Config:	randconfig (download)
Log:	Download original Possible warnings (3) drivers/gpu/drm/rockchip/cdn-dp-core.c:1123:12: warning: 'cdn_dp_resume' defined but not used [-Wunused-function] drivers/mailbox/imx-mailbox.c:611:12: warning: 'imx_mu_resume_noirq' defined but not used [-Wunused-function] drivers/mailbox/imx-mailbox.c:601:12: warning: 'imx_mu_suspend_noirq' defined but not used [-Wunused-function] Full Log # git rev-parse -q --verify 4f30a60aa78410496e5ffe632a371c00f0d83a8d^{commit} # git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/linus master # git rev-parse -q --verify 4f30a60aa78410496e5ffe632a371c00f0d83a8d^{commit} 4f30a60aa78410496e5ffe632a371c00f0d83a8d # git checkout -q -f -B kisskb 4f30a60aa78410496e5ffe632a371c00f0d83a8d # git clean -qxdf # < git log -1 # commit 4f30a60aa78410496e5ffe632a371c00f0d83a8d # Merge: 74858abbb103 a5161eeef97c # Author: Linus Torvalds <torvalds@linux-foundation.org> # Date: Tue Aug 4 15:12:02 2020 -0700 # # Merge tag 'close-range-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux # # Pull close_range() implementation from Christian Brauner: # "This adds the close_range() syscall. It allows to efficiently close a # range of file descriptors up to all file descriptors of a calling # task. # # This is coordinated with the FreeBSD folks which have copied our # version of this syscall and in the meantime have already merged it in # April 2019: # # https://reviews.freebsd.org/D21627 # https://svnweb.freebsd.org/base?view=revision&revision=359836 # # The syscall originally came up in a discussion around the new mount # API and making new file descriptor types cloexec by default. During # this discussion, Al suggested the close_range() syscall. # # First, it helps to close all file descriptors of an exec()ing task. # This can be done safely via (quoting Al's example from [1] verbatim): # # /* that exec is sensitive / # unshare(CLONE_FILES); # / we don't want anything past stderr here / # close_range(3, ~0U); # execve(....); # # The code snippet above is one way of working around the problem that # file descriptors are not cloexec by default. This is aggravated by the # fact that we can't just switch them over without massively regressing # userspace. For a whole class of programs having an in-kernel method of # closing all file descriptors is very helpful (e.g. demons, service # managers, programming language standard libraries, container managers # etc.). # # Second, it allows userspace to avoid implementing closing all file # descriptors by parsing through /proc/<pid>/fd/ and calling close() on # each file descriptor and other hacks. From looking at various # large(ish) userspace code bases this or similar patterns are very # common in service managers, container runtimes, and programming # language runtimes/standard libraries such as Python or Rust. # # In addition, the syscall will also work for tasks that do not have # procfs mounted and on kernels that do not have procfs support compiled # in. In such situations the only way to make sure that all file # descriptors are closed is to call close() on each file descriptor up # to UINT_MAX or RLIMIT_NOFILE, OPEN_MAX trickery. # # Based on Linus' suggestion close_range() also comes with a new flag # CLOSE_RANGE_UNSHARE to more elegantly handle file descriptor dropping # right before exec. This would usually be expressed in the sequence: # # unshare(CLONE_FILES); # close_range(3, ~0U); # # as pointed out by Linus it might be desirable to have this be a part # of close_range() itself under a new flag CLOSE_RANGE_UNSHARE which # gets especially handy when we're closing all file descriptors above a # certain threshold. # # Test-suite as always included" # # * tag 'close-range-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux: # tests: add CLOSE_RANGE_UNSHARE tests # close_range: add CLOSE_RANGE_UNSHARE # tests: add close_range() tests # arch: wire-up close_range() # open: add close_range() # < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-ld --version # < git log --format=%s --max-count=1 4f30a60aa78410496e5ffe632a371c00f0d83a8d # < make -s -j 24 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux- randconfig KCONFIG_SEED=0xB3B4FD45 # Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y # < make -s -j 24 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux- help # make -s -j 24 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux- olddefconfig # make -s -j 24 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux- /kisskb/src/drivers/gpu/drm/rockchip/cdn-dp-core.c:1123:12: warning: 'cdn_dp_resume' defined but not used [-Wunused-function] static int cdn_dp_resume(struct device dev) ^~~~~~~~~~~~~ /kisskb/src/drivers/mailbox/imx-mailbox.c:611:12: warning: 'imx_mu_resume_noirq' defined but not used [-Wunused-function] static int imx_mu_resume_noirq(struct device dev) ^~~~~~~~~~~~~~~~~~~ /kisskb/src/drivers/mailbox/imx-mailbox.c:601:12: warning: 'imx_mu_suspend_noirq' defined but not used [-Wunused-function] static int imx_mu_suspend_noirq(struct device *dev) ^~~~~~~~~~~~~~~~~~~~ Completed OK # rm -rf /kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8 # Build took: 0:06:20.976653

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