# git rev-parse -q --verify f9346b739bcf2de0fad889708cdece04bacbc604^{commit}
f9346b739bcf2de0fad889708cdece04bacbc604
already have revision, skipping fetch
# git checkout -q -f -B kisskb f9346b739bcf2de0fad889708cdece04bacbc604
# git clean -qxdf
# < git log -1
# commit f9346b739bcf2de0fad889708cdece04bacbc604
# Author: Michael Ellerman <mpe@ellerman.id.au>
# Date:   Thu Aug 1 16:44:02 2019 +1000
# 
#     selftests/powerpc: Fix build failures with GCC 9
#     
#     GCC 9 fails to build some of the ptrace TM tests, with errors such as:
#     
#       ptrace-tm-spd-vsx.c: In function 'tm_spd_vsx':
#       ptrace-tm-spd-vsx.c:51:2: error: listing the stack pointer register 'r1' in a clobber list is deprecated [-Werror=deprecated]
#          51 |  asm __volatile__(
#             |  ^~~
#       ptrace-tm-spd-vsx.c:51:2: note: the value of the stack pointer after an 'asm' statement must be the same as it was before the statement
#     
#     Which is probably fair enough.
#     
#     Some of these inline asm blocks are doing quite a lot and are probably
#     pushing the boundaries of what's sane to do with inline asm, but they
#     shouldn't actually be returning with r1 modified.
#     
#     So drop r1 from the clobbers for now, we should probably rewrite them
#     to be real asm functions at some point.
#     
#     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 f9346b739bcf2de0fad889708cdece04bacbc604
# < make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-fixes_mvme5100_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  mvme5100_defconfig
# make -s -j 80 ARCH=powerpc O=/kisskb/build/powerpc-fixes_mvme5100_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:194:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/ipc/shm.c: In function 'ksys_shmdt':
/kisskb/src/ipc/shm.c:1712:59: warning: 'file' may be used uninitialized in this function [-Wuninitialized]
/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:338:21: note: 'pdeo' was declared here
/kisskb/src/net/core/gen_stats.c: In function '__gnet_stats_copy_basic':
/kisskb/src/net/core/gen_stats.c:157:19: warning: 'seq' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/tty/serial/8250/8250_core.c: In function 'univ8250_release_irq':
/kisskb/src/drivers/tty/serial/8250/8250_core.c:243:2: warning: 'i' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/tty/serial/8250/8250_core.c:228:19: note: 'i' was declared here
/kisskb/src/kernel/futex.c: In function 'do_futex':
/kisskb/src/kernel/futex.c:1686:3: warning: 'oldval' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/kernel/futex.c:1651:6: note: 'oldval' was declared here
/kisskb/src/fs/udf/unicode.c: In function 'udf_name_conv_char':
/kisskb/src/fs/udf/unicode.c:132:8: warning: 'c' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/core/dev.c: In function 'validate_xmit_skb_list':
/kisskb/src/net/core/dev.c:3407:15: warning: 'tail' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/cifs/smb2pdu.c: In function 'SMB2_ioctl_init':
/kisskb/src/fs/cifs/smb2pdu.c:2671:19: warning: 'in_data_buf' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/lib/rhashtable.c: In function 'rht_deferred_worker':
/kisskb/src/include/linux/rhashtable.h:110:10: warning: 'next' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/lib/rhashtable.c:222:28: note: 'next' was declared here
/kisskb/src/drivers/net/tun.c: In function 'tun_get_user':
/kisskb/src/drivers/net/tun.c:1831:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/tun.c:1524:31: warning: 'linear' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/tun.c:1744:46: note: 'linear' was declared here
INFO: Uncompressed kernel (size 0x438028) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x500000)
Completed OK
# rm -rf /kisskb/build/powerpc-fixes_mvme5100_defconfig_powerpc-gcc4.6
# Build took: 0:00:44.358103