Buildresult: powerpc-next/sh-defconfig/sh4-gcc4.6 built on May 23 2019, 19:52
kisskb
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Status:
OK
Date/Time:
May 23 2019, 19:52
Duration:
0:00:19.784657
Builder:
ka4
Revision:
selftests/powerpc: Add a test of spectre_v2 mitigations (
13fef872f8b33431ebb920915252cafc651092dd)
Target:
powerpc-next/sh-defconfig/sh4-gcc4.6
Branch:
powerpc-next
Compiler:
sh4-gcc4.6
(sh4-linux-gcc (GCC) 4.6.3 / GNU ld (GNU Binutils) 2.22)
Config:
defconfig
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Log:
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Possible warnings (18)
arch/sh/kernel/cpu/sh4/../sh3/../../entry-common.S:385: Warning: overflow in branch to syscall_exit_work; converted into longer instruction sequence arch/sh/kernel/cpu/sh4/../sh3/../../entry-common.S:388: Warning: overflow in branch to syscall_exit_work; converted into longer instruction sequence mm/vmstat.c:89:5: warning: 'oldval' may be used uninitialized in this function [-Wuninitialized] kernel/rcu/srcutree.c:140:32: warning: 'levelspread[<U6640>]' may be used uninitialized in this function [-Wuninitialized] kernel/printk/printk.c:193:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] drivers/base/regmap/regmap.c:2589:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] drivers/base/regmap/regmap.c:1850:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] fs/ext4/readpage.c:295:1: warning: the frame size of 1200 bytes is larger than 1024 bytes [-Wframe-larger-than=] include/linux/skbuff.h:1406:6: warning: 'extra_uref' may be used uninitialized in this function [-Wuninitialized] include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized] include/linux/skbuff.h:1406:6: warning: 'extra_uref' may be used uninitialized in this function [-Wuninitialized] mm/hugetlb.c:1464:5: warning: 'page' may be used uninitialized in this function [-Wuninitialized] net/ipv4/fib_semantics.c:1027:12: warning: 'err' may be used uninitialized in this function [-Wuninitialized] fs/mpage.c:338:1: warning: the frame size of 1108 bytes is larger than 1024 bytes [-Wframe-larger-than=] fs/mpage.c:690:1: warning: the frame size of 1148 bytes is larger than 1024 bytes [-Wframe-larger-than=] drivers/sh/clk/cpg.c:41:2: warning: passing argument 1 of 'ioread8' discards 'const' qualifier from pointer target type [enabled by default] drivers/sh/clk/cpg.c:46:2: warning: passing argument 1 of 'ioread16' discards 'const' qualifier from pointer target type [enabled by default] drivers/sh/clk/cpg.c:51:2: warning: passing argument 1 of 'ioread32' discards 'const' qualifier from pointer target type [enabled by default]
Full Log
# git rev-parse -q --verify 13fef872f8b33431ebb920915252cafc651092dd^{commit} 13fef872f8b33431ebb920915252cafc651092dd already have revision, skipping fetch # git checkout -q -f -B kisskb 13fef872f8b33431ebb920915252cafc651092dd # git clean -qxdf # < git log -1 # commit 13fef872f8b33431ebb920915252cafc651092dd # Author: Michael Ellerman <mpe@ellerman.id.au> # Date: Mon May 20 20:55:20 2019 +1000 # # selftests/powerpc: Add a test of spectre_v2 mitigations # # This test uses the PMU to count branch prediction hits/misses for a # known loop, and compare the result to the reported spectre v2 # mitigation. # # This gives us a way of sanity checking that the reported mitigation is # actually in effect. # # Sample output for some cases, eg: # # Power9: # sysfs reports: 'Vulnerable' # PM_BR_PRED_CCACHE: result 368 running/enabled 5792777124 # PM_BR_MPRED_CCACHE: result 319 running/enabled 5792775546 # PM_BR_PRED_PCACHE: result 2147483281 running/enabled 5792773128 # PM_BR_MPRED_PCACHE: result 213604201 running/enabled 5792771640 # Miss percent 9 % # OK - Measured branch prediction rates match reported spectre v2 mitigation. # # sysfs reports: 'Mitigation: Indirect branch serialisation (kernel only)' # PM_BR_PRED_CCACHE: result 895 running/enabled 5780320920 # PM_BR_MPRED_CCACHE: result 822 running/enabled 5780312414 # PM_BR_PRED_PCACHE: result 2147482754 running/enabled 5780308836 # PM_BR_MPRED_PCACHE: result 213639731 running/enabled 5780307912 # Miss percent 9 % # OK - Measured branch prediction rates match reported spectre v2 mitigation. # # sysfs reports: 'Mitigation: Indirect branch cache disabled' # PM_BR_PRED_CCACHE: result 2147483649 running/enabled 20540186160 # PM_BR_MPRED_CCACHE: result 2147483649 running/enabled 20540180056 # PM_BR_PRED_PCACHE: result 0 running/enabled 20540176090 # PM_BR_MPRED_PCACHE: result 0 running/enabled 20540174182 # Miss percent 100 % # OK - Measured branch prediction rates match reported spectre v2 mitigation. # # Power8: # sysfs reports: 'Vulnerable' # PM_BR_PRED_CCACHE: result 2147483649 running/enabled 3505888142 # PM_BR_MPRED_CCACHE: result 9 running/enabled 3505882788 # Miss percent 0 % # OK - Measured branch prediction rates match reported spectre v2 mitigation. # # sysfs reports: 'Mitigation: Indirect branch cache disabled' # PM_BR_PRED_CCACHE: result 2147483649 running/enabled 16931421988 # PM_BR_MPRED_CCACHE: result 2147483649 running/enabled 16931416478 # Miss percent 100 % # OK - Measured branch prediction rates match reported spectre v2 mitigation. # success: spectre_v2 # # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # < /opt/cross/kisskb/gcc-4.6.3-nolibc/sh4-linux/bin/sh4-linux-gcc --version # < /opt/cross/kisskb/gcc-4.6.3-nolibc/sh4-linux/bin/sh4-linux-ld --version # < git log --format=%s --max-count=1 13fef872f8b33431ebb920915252cafc651092dd # < make -s -j 40 ARCH=sh O=/kisskb/build/powerpc-next_sh-defconfig_sh4 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/sh4-linux/bin/sh4-linux- defconfig # make -s -j 40 ARCH=sh O=/kisskb/build/powerpc-next_sh-defconfig_sh4 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/sh4-linux/bin/sh4-linux- Generating include/generated/machtypes.h /kisskb/src/arch/sh/kernel/cpu/sh4/../sh3/../../entry-common.S: Assembler messages: /kisskb/src/arch/sh/kernel/cpu/sh4/../sh3/../../entry-common.S:385: Warning: overflow in branch to syscall_exit_work; converted into longer instruction sequence /kisskb/src/arch/sh/kernel/cpu/sh4/../sh3/../../entry-common.S:388: Warning: overflow in branch to syscall_exit_work; converted into longer instruction sequence /kisskb/src/mm/vmstat.c: In function 'sysctl_vm_numa_stat_handler': /kisskb/src/mm/vmstat.c:89:5: warning: 'oldval' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/kernel/rcu/srcutree.c: In function 'init_srcu_struct_fields': /kisskb/src/kernel/rcu/srcutree.c:140:32: warning: 'levelspread[<U6640>]' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/kernel/rcu/srcutree.c:88:6: note: 'levelspread[<U6640>]' was declared here /kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl': /kisskb/src/kernel/printk/printk.c:193:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/base/regmap/regmap.c: In function 'regmap_raw_read': /kisskb/src/drivers/base/regmap/regmap.c:2589:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/base/regmap/regmap.c: In function '_regmap_raw_write': /kisskb/src/drivers/base/regmap/regmap.c:1850:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/ext4/readpage.c: In function 'ext4_mpage_readpages': /kisskb/src/fs/ext4/readpage.c:295:1: warning: the frame size of 1200 bytes is larger than 1024 bytes [-Wframe-larger-than=] /kisskb/src/net/ipv6/ip6_output.c: In function '__ip6_append_data.isra.16': /kisskb/src/include/linux/skbuff.h:1406:6: warning: 'extra_uref' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/net/ipv6/ip6_output.c:1278:14: note: 'extra_uref' was declared here /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:331:21: note: 'pdeo' was declared here /kisskb/src/net/ipv4/ip_output.c: In function '__ip_append_data': /kisskb/src/include/linux/skbuff.h:1406:6: warning: 'extra_uref' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/net/ipv4/ip_output.c:880:14: note: 'extra_uref' was declared here /kisskb/src/mm/hugetlb.c: In function 'alloc_pool_huge_page': /kisskb/src/mm/hugetlb.c:1464:5: warning: 'page' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/net/ipv4/fib_semantics.c: In function 'fib_create_info': /kisskb/src/net/ipv4/fib_semantics.c:1027:12: warning: 'err' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/net/ipv4/fib_semantics.c:971:6: note: 'err' was declared here /kisskb/src/fs/mpage.c: In function 'do_mpage_readpage': /kisskb/src/fs/mpage.c:338:1: warning: the frame size of 1108 bytes is larger than 1024 bytes [-Wframe-larger-than=] /kisskb/src/fs/mpage.c: In function '__mpage_writepage': /kisskb/src/fs/mpage.c:690:1: warning: the frame size of 1148 bytes is larger than 1024 bytes [-Wframe-larger-than=] /kisskb/src/drivers/sh/clk/cpg.c: In function 'r8': /kisskb/src/drivers/sh/clk/cpg.c:41:2: warning: passing argument 1 of 'ioread8' discards 'const' qualifier from pointer target type [enabled by default] /kisskb/src/include/asm-generic/iomap.h:29:21: note: expected 'void *' but argument is of type 'const void *' /kisskb/src/drivers/sh/clk/cpg.c: In function 'r16': /kisskb/src/drivers/sh/clk/cpg.c:46:2: warning: passing argument 1 of 'ioread16' discards 'const' qualifier from pointer target type [enabled by default] /kisskb/src/include/asm-generic/iomap.h:30:21: note: expected 'void *' but argument is of type 'const void *' /kisskb/src/drivers/sh/clk/cpg.c: In function 'r32': /kisskb/src/drivers/sh/clk/cpg.c:51:2: warning: passing argument 1 of 'ioread32' discards 'const' qualifier from pointer target type [enabled by default] /kisskb/src/include/asm-generic/iomap.h:32:21: note: expected 'void *' but argument is of type 'const void *' Kernel: arch/sh/boot/zImage is ready Completed OK # rm -rf /kisskb/build/powerpc-next_sh-defconfig_sh4 # Build took: 0:00:19.784657
© Michael Ellerman 2006-2018.