Buildresult: crypto/pseries_defconfig/powerpc-gcc4.6 built on Apr 8 2019, 21:17

kisskb

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Status:	OK
Date/Time:	Apr 8 2019, 21:17
Duration:	0:02:49.117880
Builder:	ka2
Revision:	crypto: x86/poly1305 - fix overflow during partial reduction (`678cce4019d746da6c680c48ba9e6d417803e127)`
Target:	crypto/pseries_defconfig/powerpc-gcc4.6
Branch:	crypto
Compiler:	powerpc-gcc4.6 (powerpc-linux-gcc (GCC) 4.6.3 / GNU ld (GNU Binutils) 2.22)
Config:	pseries_defconfig (download)
Log:	Download original Possible warnings (18) <stdin>:1478:2: warning: #warning syscall io_uring_setup not implemented [-Wcpp] <stdin>:1481:2: warning: #warning syscall io_uring_enter not implemented [-Wcpp] <stdin>:1484:2: warning: #warning syscall io_uring_register not implemented [-Wcpp] kernel/printk/printk.c:186:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] mm/hugetlb.c:1435:5: warning: 'page' may be used uninitialized in this function [-Wuninitialized] drivers/base/regmap/regmap.c:2594:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] drivers/base/regmap/regmap.c:1855:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] kernel/trace/trace_dynevent.c:89:5: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] net/bridge/br_netlink.c:652:7: warning: 'err' may be used uninitialized in this function [-Wuninitialized] fs/nfsd/nfs4xdr.c:2076:9: warning: 'str' may be used uninitialized in this function [-Wuninitialized] drivers/i2c/i2c-core-base.c:235:5: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized] fs/udf/unicode.c:132:8: warning: 'c' may be used uninitialized in this function [-Wuninitialized] drivers/net/tun.c:1845:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized] drivers/net/tun.c:1755:46: warning: 'linear' may be used uninitialized in this function [-Wuninitialized] drivers/tty/serial/8250/8250_core.c:247:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized] net/sunrpc/xprtsock.c:529:2: warning: 'read' may be used uninitialized in this function [-Wuninitialized] net/sunrpc/xprtsock.c:529:2: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] Full Log # git rev-parse -q --verify 678cce4019d746da6c680c48ba9e6d417803e127^{commit} # git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/crypto master # git rev-parse -q --verify 678cce4019d746da6c680c48ba9e6d417803e127^{commit} 678cce4019d746da6c680c48ba9e6d417803e127 # git checkout -q -f -B kisskb 678cce4019d746da6c680c48ba9e6d417803e127 # git clean -qxdf # < git log -1 # commit 678cce4019d746da6c680c48ba9e6d417803e127 # Author: Eric Biggers <ebiggers@google.com> # Date: Sun Mar 31 13:04:11 2019 -0700 # # crypto: x86/poly1305 - fix overflow during partial reduction # # The x86_64 implementation of Poly1305 produces the wrong result on some # inputs because poly1305_4block_avx2() incorrectly assumes that when # partially reducing the accumulator, the bits carried from limb 'd4' to # limb 'h0' fit in a 32-bit integer. This is true for poly1305-generic # which processes only one block at a time. However, it's not true for # the AVX2 implementation, which processes 4 blocks at a time and # therefore can produce intermediate limbs about 4x larger. # # Fix it by making the relevant calculations use 64-bit arithmetic rather # than 32-bit. Note that most of the carries already used 64-bit # arithmetic, but the d4 -> h0 carry was different for some reason. # # To be safe I also made the same change to the corresponding SSE2 code, # though that only operates on 1 or 2 blocks at a time. I don't think # it's really needed for poly1305_block_sse2(), but it doesn't hurt # because it's already x86_64 code. It might be needed for # poly1305_2block_sse2(), but overflows aren't easy to reproduce there. # # This bug was originally detected by my patches that improve testmgr to # fuzz algorithms against their generic implementation. But also add a # test vector which reproduces it directly (in the AVX2 case). # # Fixes: b1ccc8f4b631 ("crypto: poly1305 - Add a four block AVX2 variant for x86_64") # Fixes: c70f4abef07a ("crypto: poly1305 - Add a SSE2 SIMD variant for x86_64") # Cc: <stable@vger.kernel.org> # v4.3+ # Cc: Martin Willi <martin@strongswan.org> # Cc: Jason A. Donenfeld <Jason@zx2c4.com> # Signed-off-by: Eric Biggers <ebiggers@google.com> # Reviewed-by: Martin Willi <martin@strongswan.org> # Signed-off-by: Herbert Xu <herbert@gondor.apana.org.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 678cce4019d746da6c680c48ba9e6d417803e127 # < make -s -j 48 ARCH=powerpc O=/kisskb/build/crypto_pseries_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- pseries_defconfig # make -s -j 48 ARCH=powerpc O=/kisskb/build/crypto_pseries_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- <stdin>:1478:2: warning: #warning syscall io_uring_setup not implemented [-Wcpp] <stdin>:1481:2: warning: #warning syscall io_uring_enter not implemented [-Wcpp] <stdin>:1484:2: warning: #warning syscall io_uring_register not implemented [-Wcpp] /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] /kisskb/src/mm/hugetlb.c: In function 'alloc_pool_huge_page': /kisskb/src/mm/hugetlb.c:1435:5: warning: 'page' 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:2594:6: 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:1855:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/kernel/trace/trace_dynevent.c: In function 'create_dyn_event': /kisskb/src/kernel/trace/trace_dynevent.c:89:5: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/net/bridge/br_netlink.c: In function 'br_afspec.isra.28': /kisskb/src/net/bridge/br_netlink.c:652:7: warning: 'err' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/nfsd/nfs4xdr.c: In function 'nfsd4_encode_components_esc': /kisskb/src/fs/nfsd/nfs4xdr.c:2076:9: warning: 'str' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/i2c/i2c-core-base.c: In function 'i2c_generic_scl_recovery': /kisskb/src/drivers/i2c/i2c-core-base.c:235:5: warning: 'ret' 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:337:21: note: 'pdeo' 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/drivers/net/tun.c: In function 'tun_get_user': /kisskb/src/drivers/net/tun.c:1845:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/tun.c:1755:46: warning: 'linear' 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:247:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/tty/serial/8250/8250_core.c:227:19: note: 'i' was declared here /kisskb/src/net/sunrpc/xprtsock.c: In function 'xs_read_stream.constprop.18': /kisskb/src/net/sunrpc/xprtsock.c:529:2: warning: 'read' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/net/sunrpc/xprtsock.c:498:15: note: 'read' was declared here /kisskb/src/net/sunrpc/xprtsock.c:529:2: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/net/sunrpc/xprtsock.c:499:10: note: 'ret' was declared here Completed OK # rm -rf /kisskb/build/crypto_pseries_defconfig_powerpc-gcc4.6 # Build took: 0:02:49.117880

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