# 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-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version
# < git log --format=%s --max-count=1 ae3419fbac845b4d3f3a9fae4cc80c68d82cdf6e
# < make -s -j 160 ARCH=powerpc O=/kisskb/build/linus_ppc64le_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  ppc64le_defconfig
# < make -s -j 160 ARCH=powerpc O=/kisskb/build/linus_ppc64le_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 160 ARCH=powerpc O=/kisskb/build/linus_ppc64le_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
# make -s -j 160 ARCH=powerpc O=/kisskb/build/linus_ppc64le_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
/kisskb/src/fs/btrfs/send.c: In function 'get_cur_inode_state':
/kisskb/src/fs/btrfs/send.c:1902:23: warning: 'right_gen' may be used uninitialized in this function [-Wmaybe-uninitialized]
   if (left_gen == gen && right_gen == gen) {
                       ^
/kisskb/src/fs/btrfs/send.c: At top level:
cc1: warning: unrecognized command line option '-Wno-shift-negative-value'
Completed OK
# rm -rf /kisskb/build/linus_ppc64le_defconfig_powerpc-gcc5
# Build took: 0:03:18.421004