# git rev-parse -q --verify 0b2c8f8b6b0c7530e2866c95862546d0da2057b0^{commit}
0b2c8f8b6b0c7530e2866c95862546d0da2057b0
already have revision, skipping fetch
# git checkout -q -f -B kisskb 0b2c8f8b6b0c7530e2866c95862546d0da2057b0
# git clean -qxdf
# < git log -1
# commit 0b2c8f8b6b0c7530e2866c95862546d0da2057b0
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Fri Jan 4 10:23:10 2019 -0800
# 
#     i915: fix missing user_access_end() in page fault exception case
#     
#     When commit fddcd00a49e9 ("drm/i915: Force the slow path after a
#     user-write error") unified the error handling for various user access
#     problems, it didn't do the user_access_end() that is needed for the
#     unsafe_put_user() case.
#     
#     It's not a huge deal: a missed user_access_end() will only mean that
#     SMAP protection isn't active afterwards, and for the error case we'll be
#     returning to user mode soon enough anyway.  But it's wrong, and adding
#     the proper user_access_end() is trivial enough (and doing it for the
#     other error cases where it isn't needed doesn't hurt).
#     
#     I noticed it while doing the same prep-work for changing
#     user_access_begin() that precipitated the access_ok() changes in commit
#     96d4f267e40f ("Remove 'type' argument from access_ok() function").
#     
#     Fixes: fddcd00a49e9 ("drm/i915: Force the slow path after a user-write error")
#     Cc: Chris Wilson <chris@chris-wilson.co.uk>
#     Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
#     Cc: stable@kernel.org # v4.20
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/hppa64-linux/bin/hppa64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/hppa64-linux/bin/hppa64-linux-ld --version
# < git log --format=%s --max-count=1 0b2c8f8b6b0c7530e2866c95862546d0da2057b0
# < make -s -j 120 ARCH=parisc O=/kisskb/build/linus_a500_defconfig_parisc64 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/hppa64-linux/bin/hppa64-linux-  a500_defconfig
# make -s -j 120 ARCH=parisc O=/kisskb/build/linus_a500_defconfig_parisc64 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/hppa64-linux/bin/hppa64-linux-  
<stdin>:1336:2: warning: #warning syscall rseq not implemented [-Wcpp]
In file included from /kisskb/src/arch/parisc/include/asm/atomic.h:10,
                 from /kisskb/src/include/linux/atomic.h:7,
                 from /kisskb/src/arch/parisc/include/asm/bitops.h:13,
                 from /kisskb/src/include/linux/bitops.h:19,
                 from /kisskb/src/include/linux/kernel.h:11,
                 from /kisskb/src/include/linux/list.h:9,
                 from /kisskb/src/include/linux/module.h:9,
                 from /kisskb/src/drivers/scsi/scsi_debug.c:23:
/kisskb/src/drivers/scsi/scsi_debug.c: In function 'resp_start_stop':
/kisskb/src/arch/parisc/include/asm/cmpxchg.h:48:3: warning: value computed is not used [-Wunused-value]
  ((__typeof__(*(ptr)))__xchg((unsigned long)(x), (ptr), sizeof(*(ptr))))
/kisskb/src/arch/parisc/include/asm/atomic.h:78:30: note: in expansion of macro 'xchg'
 #define atomic_xchg(v, new) (xchg(&((v)->counter), new))
                              ^~~~
/kisskb/src/drivers/scsi/scsi_debug.c:1624:2: note: in expansion of macro 'atomic_xchg'
  atomic_xchg(&devip->stopped, stop);
  ^~~~~~~~~~~
Completed OK
# rm -rf /kisskb/build/linus_a500_defconfig_parisc64
# Build took: 0:00:44.305545