Buildresult: linus/bcm_defconfig/arm-gcc4.6 built on Feb 20 2017, 06:06
kisskb
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Status:
Failed
Date/Time:
Feb 20 2017, 06:06
Duration:
0:00:02.421700
Builder:
ka1
Revision:
Fix missing sanity check in /dev/sg (
137d01df511b3afe1f05499aea05f3bafc0fb221)
Target:
linus/bcm_defconfig/arm-gcc4.6
Branch:
linus
Compiler:
arm-gcc4.6
(arm-unknown-linux-gnueabi-gcc (GCC) 4.6.3)
Log:
Download original
Possible errors
make[2]: *** [bcm_defconfig] Error 1 make[1]: *** [bcm_defconfig] Error 2 make: *** [sub-make] Error 2
No warnings found in log.
Full Log
# git rev-parse -q --verify 137d01df511b3afe1f05499aea05f3bafc0fb221^{commit} 137d01df511b3afe1f05499aea05f3bafc0fb221 already have revision, skipping fetch # git checkout -q -f -B kisskb 137d01df511b3afe1f05499aea05f3bafc0fb221 # git clean -qxdf # git log -1 commit 137d01df511b3afe1f05499aea05f3bafc0fb221 Author: Al Viro <viro@ZenIV.linux.org.uk> Date: Sun Feb 19 07:15:27 2017 +0000 Fix missing sanity check in /dev/sg What happens is that a write to /dev/sg is given a request with non-zero ->iovec_count combined with zero ->dxfer_len. Or with ->dxferp pointing to an array full of empty iovecs. Having write permission to /dev/sg shouldn't be equivalent to the ability to trigger BUG_ON() while holding spinlocks... Found by Dmitry Vyukov and syzkaller. [ The BUG_ON() got changed to a WARN_ON_ONCE(), but this fixes the underlying issue. - Linus ] Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Reported-by: Dmitry Vyukov <dvyukov@google.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Cc: stable@vger.kernel.org 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 # < git log --format=%s --max-count=1 137d01df511b3afe1f05499aea05f3bafc0fb221 # < make -j 48 ARCH=arm O=/home/kisskb/slave/build/linus_bcm_defconfig_arm CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi- bcm_defconfig make[2]: *** [bcm_defconfig] Error 1 make[1]: *** [bcm_defconfig] Error 2 make: *** [sub-make] Error 2 Command 'make -j 48 ARCH=arm O=/home/kisskb/slave/build/linus_bcm_defconfig_arm CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi- bcm_defconfig' returned non-zero exit status 2 # rm -rf /home/kisskb/slave/build/linus_bcm_defconfig_arm # Build took: 0:00:02.421700
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