# git rev-parse -q --verify c64396cc36c6e60704ab06c1fb1c4a46179c9120^{commit}
c64396cc36c6e60704ab06c1fb1c4a46179c9120
already have revision, skipping fetch
# git checkout -q -f -B kisskb c64396cc36c6e60704ab06c1fb1c4a46179c9120
# git clean -qxdf
# < git log -1
# commit c64396cc36c6e60704ab06c1fb1c4a46179c9120
# Merge: e5ff2cb9cf67 34b1a1ce1458
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Thu Jan 28 11:18:43 2021 -0800
# 
#     Merge tag 'locking-urgent-2021-01-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
#     
#     Pull locking fixes from Thomas Gleixner:
#      "A set of PI futex fixes:
#     
#        - Address a longstanding issue where the user space part of the PI
#          futex is not writeable. The kernel returns with inconsistent state
#          which can in the worst case result in a UAF of a tasks kernel
#          stack.
#     
#          The solution is to establish consistent kernel state which makes
#          future operations on the futex fail because user space and kernel
#          space state are inconsistent. Not a problem as PI futexes
#          fundamentaly require a functional RW mapping and if user space
#          pulls the rug under it, then it can keep the pieces it asked for.
#     
#        - Address an issue where the return value is incorrect in case that
#          the futex was acquired after a timeout/signal made the waiter drop
#          out of the rtmutex wait.
#     
#          In one of the corner cases the kernel returned an error code
#          despite having successfully acquired the futex"
#     
#     * tag 'locking-urgent-2021-01-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
#       futex: Handle faults correctly for PI futexes
#       futex: Simplify fixup_pi_state_owner()
#       futex: Use pi_state_update_owner() in put_pi_state()
#       rtmutex: Remove unused argument from rt_mutex_proxy_unlock()
#       futex: Provide and use pi_state_update_owner()
#       futex: Replace pointless printk in fixup_owner()
#       futex: Ensure the correct return value from futex_lock_pi()
# < /opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-gcc --version
# < /opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-ld --version
# < git log --format=%s --max-count=1 c64396cc36c6e60704ab06c1fb1c4a46179c9120
# < make -s -j 24 ARCH=sparc64 O=/kisskb/build/linus_sparc64-allmodconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  allmodconfig
# Added to kconfig CONFIG_BUILD_DOCSRC=n
# Added to kconfig CONFIG_HAVE_FTRACE_MCOUNT_RECORD=n
# Added to kconfig CONFIG_SAMPLES=n
# Added to kconfig CONFIG_MODULE_SIG=n
# < make -s -j 24 ARCH=sparc64 O=/kisskb/build/linus_sparc64-allmodconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  help
# make -s -j 24 ARCH=sparc64 O=/kisskb/build/linus_sparc64-allmodconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  olddefconfig
# make -s -j 24 ARCH=sparc64 O=/kisskb/build/linus_sparc64-allmodconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  
<stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp]
In file included from /kisskb/src/include/linux/kernel.h:14:0,
                 from /kisskb/src/include/linux/list.h:9,
                 from /kisskb/src/include/linux/module.h:12,
                 from /kisskb/src/drivers/gpu/drm/ttm/ttm_pool.c:34:
/kisskb/src/drivers/gpu/drm/ttm/ttm_pool.c: In function 'ttm_pool_alloc':
/kisskb/src/include/linux/minmax.h:18:28: warning: comparison of distinct pointer types lacks a cast
  (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1)))
                            ^
/kisskb/src/include/linux/minmax.h:32:4: note: in expansion of macro '__typecheck'
   (__typecheck(x, y) && __no_side_effects(x, y))
    ^
/kisskb/src/include/linux/minmax.h:42:24: note: in expansion of macro '__safe_cmp'
  __builtin_choose_expr(__safe_cmp(x, y), \
                        ^
/kisskb/src/include/linux/minmax.h:51:19: note: in expansion of macro '__careful_cmp'
 #define min(x, y) __careful_cmp(x, y, <)
                   ^
/kisskb/src/drivers/gpu/drm/ttm/ttm_pool.c:373:15: note: in expansion of macro 'min'
  for (order = min(MAX_ORDER - 1UL, __fls(num_pages)); num_pages;
               ^
/kisskb/src/drivers/input/joystick/analog.c:160:2: warning: #warning Precise timer not defined for this architecture. [-Wcpp]
 #warning Precise timer not defined for this architecture.
  ^
  kernel: arch/sparc/boot/image is ready
  kernel: arch/sparc/boot/zImage is ready
Completed OK
# rm -rf /kisskb/build/linus_sparc64-allmodconfig_sparc64
# Build took: 0:20:42.962945