Buildresult: linus/x86_64-allmodconfig/x86_64-gcc11 built on Mar 1 2023, 01:36

kisskb

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Status:	OK
Date/Time:	Mar 1 2023, 01:36
Duration:	0:20:58.701150
Builder:	alpine1
Revision:	vc_screen: don't clobber return value in vcs_read (`ae3419fbac845b4d3f3a9fae4cc80c68d82cdf6e)`
Target:	linus/x86_64-allmodconfig/x86_64-gcc11
Branch:	linus
Compiler:	x86_64-gcc11 (x86_64-linux-gcc (GCC) 11.3.0 / GNU ld (GNU Binutils) 2.38)
Config:	allmodconfig (download)
Log:	Download original Possible warnings (1) vmlinux.o: warning: objtool: do_machine_check+0xad8: call to pentium_machine_check.constprop.0() leaves .noinstr.text section Full Log # git rev-parse -q --verify ae3419fbac845b4d3f3a9fae4cc80c68d82cdf6e^{commit} ae3419fbac845b4d3f3a9fae4cc80c68d82cdf6e already have revision, skipping fetch # git checkout -q -f -B kisskb ae3419fbac845b4d3f3a9fae4cc80c68d82cdf6e # git clean -qxdf # < git log -1 # commit ae3419fbac845b4d3f3a9fae4cc80c68d82cdf6e # Author: Thomas Weißschuh <linux@weissschuh.net> # Date: Mon Feb 20 06:46:12 2023 +0000 # # vc_screen: don't clobber return value in vcs_read # # Commit 226fae124b2d ("vc_screen: move load of struct vc_data pointer in # vcs_read() to avoid UAF") moved the call to vcs_vc() into the loop. # # While doing this it also moved the unconditional assignment of # # ret = -ENXIO; # # This unconditional assignment was valid outside the loop but within it # it clobbers the actual value of ret. # # To avoid this only assign "ret = -ENXIO" when actually needed. # # [ Also, the 'goto unlock_out" needs to be just a "break", so that it # does the right thing when it exits on later iterations when partial # success has happened - Linus ] # # Reported-by: Storm Dragon <stormdragon2976@gmail.com> # Link: https://lore.kernel.org/lkml/Y%2FKS6vdql2pIsCiI@hotmail.com/ # Fixes: 226fae124b2d ("vc_screen: move load of struct vc_data pointer in vcs_read() to avoid UAF") # Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> # Link: https://lore.kernel.org/lkml/64981d94-d00c-4b31-9063-43ad0a384bde@t-8ch.de/ # Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> # < /opt/cross/kisskb/korg/gcc-11.3.0-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-11.3.0-nolibc/x86_64-linux/bin/x86_64-linux-ld --version # < git log --format=%s --max-count=1 ae3419fbac845b4d3f3a9fae4cc80c68d82cdf6e # < make -s -j 160 ARCH=x86 O=/kisskb/build/linus_x86-allmodconfig_x86_64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.3.0-nolibc/x86_64-linux/bin/x86_64-linux- allmodconfig # Added to kconfig CONFIG_BUILD_DOCSRC=n # Added to kconfig CONFIG_MODULE_SIG=n # Added to kconfig CONFIG_SAMPLES=n # Added to kconfig CONFIG_GCC_PLUGINS=n # Added to kconfig # < make -s -j 160 ARCH=x86 O=/kisskb/build/linus_x86-allmodconfig_x86_64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.3.0-nolibc/x86_64-linux/bin/x86_64-linux- help # make -s -j 160 ARCH=x86 O=/kisskb/build/linus_x86-allmodconfig_x86_64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.3.0-nolibc/x86_64-linux/bin/x86_64-linux- olddefconfig # make -s -j 160 ARCH=x86 O=/kisskb/build/linus_x86-allmodconfig_x86_64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.3.0-nolibc/x86_64-linux/bin/x86_64-linux- vmlinux.o: warning: objtool: do_machine_check+0xad8: call to pentium_machine_check.constprop.0() leaves .noinstr.text section Completed OK # rm -rf /kisskb/build/linus_x86-allmodconfig_x86_64-gcc11 # Build took: 0:20:58.701150

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