# git rev-parse -q --verify 7bea7ac0ca0121798f3618d16201ca4dc4e67a00^{commit}
7bea7ac0ca0121798f3618d16201ca4dc4e67a00
already have revision, skipping fetch
# git checkout -q -f -B kisskb 7bea7ac0ca0121798f3618d16201ca4dc4e67a00
# git clean -qxdf
# < git log -1
# commit 7bea7ac0ca0121798f3618d16201ca4dc4e67a00
# Author: Michael Ellerman <mpe@ellerman.id.au>
# Date:   Tue Jan 15 17:37:28 2019 +1100
# 
#     powerpc/syscalls: Fix syscall tracing
#     
#     Recently in commit fbf508da7440 ("powerpc: split compat syscall table
#     out from native table") we changed the layout of the system call
#     table. Instead of having two entries for each syscall number, one for
#     the regular entry point and one for the compat entry point, we now
#     have separate tables for regular and compat entry points.
#     
#     This inadvertently broke syscall tracing (CONFIG_FTRACE_SYSCALLS),
#     because our implementation of arch_syscall_addr() knew about the
#     layout of the table (it did nr * 2).
#     
#     We can fix it just by dropping our version of arch_syscall_addr() and
#     using the generic version which does:
#     
#             return (unsigned long)sys_call_table[nr];
#     
#     Fixes: fbf508da7440 ("powerpc: split compat syscall table out from native table")
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-ld --version
# < git log --format=%s --max-count=1 7bea7ac0ca0121798f3618d16201ca4dc4e67a00
# < make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-fixes_corenet_basic_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  corenet_basic_defconfig
# make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-fixes_corenet_basic_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  
/kisskb/src/fs/proc/inode.c: In function 'proc_reg_open':
/kisskb/src/include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/proc/inode.c:339:21: note: 'pdeo' was declared here
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:186:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
Completed OK
# rm -rf /kisskb/build/powerpc-fixes_corenet_basic_defconfig_powerpc-gcc4.6
# Build took: 0:00:14.452425