Buildresult: gustavoars/ia64-defconfig/ia64-gcc4.6 built on Feb 25 2020, 04:02

kisskb

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Status:	OK
Date/Time:	Feb 25 2020, 04:02
Duration:	0:01:57.371519
Builder:	ka2
Revision:	firmware: google: vpd: Replace zero-length array with flexible-array member (`d5180902be1cf9f6b33a7b270bac94db453f2d80)`
Target:	gustavoars/ia64-defconfig/ia64-gcc4.6
Branch:	gustavoars
Compiler:	ia64-gcc4.6 (ia64-linux-gcc (GCC) 4.6.3 / GNU ld (GNU Binutils) 2.22)
Config:	defconfig (download)
Log:	Download original Possible warnings (14) <stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp] include/linux/list.h:72:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized] kernel/printk/printk.c:204:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] mm/vmstat.c:90:5: warning: 'oldval' may be used uninitialized in this function [-Wuninitialized] fs/ext4/extents.c:5009:23: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] mm/hugetlb.c:1426:5: warning: 'page' may be used uninitialized in this function [-Wuninitialized] fs/udf/unicode.c:132:8: warning: 'c' may be used uninitialized in this function [-Wuninitialized] fs/nfs/read.c:196:5: warning: value computed is not used [-Wunused-value] fs/nfs/read.c:353:2: warning: value computed is not used [-Wunused-value] fs/nfsd/nfs4xdr.c:2151:9: warning: 'str' may be used uninitialized in this function [-Wuninitialized] drivers/gpu/drm/drm_dp_mst_topology.c:5400:9: warning: missing braces around initializer [-Wmissing-braces] drivers/gpu/drm/drm_dp_mst_topology.c:5400:9: warning: (near initialization for 'desc.ident') [-Wmissing-braces] drivers/usb/core/devio.c:625:23: warning: 'errno' may be used uninitialized in this function [-Wuninitialized] fs/io_uring.c:5824:13: warning: 'err' may be used uninitialized in this function [-Wuninitialized] Full Log # git rev-parse -q --verify d5180902be1cf9f6b33a7b270bac94db453f2d80^{commit} d5180902be1cf9f6b33a7b270bac94db453f2d80 already have revision, skipping fetch # git checkout -q -f -B kisskb d5180902be1cf9f6b33a7b270bac94db453f2d80 # git clean -qxdf # < git log -1 # commit d5180902be1cf9f6b33a7b270bac94db453f2d80 # Author: Gustavo A. R. Silva <gustavo@embeddedor.com> # Date: Fri Feb 21 09:32:33 2020 -0600 # # firmware: google: vpd: Replace zero-length array with flexible-array member # # The current codebase makes use of the zero-length array language # extension to the C90 standard, but the preferred mechanism to declare # variable-length types such as these ones is a flexible array member[1][2], # introduced in C99: # # struct foo { # int stuff; # struct boo array[]; # }; # # By making use of the mechanism above, we will get a compiler warning # in case the flexible array does not occur last in the structure, which # will help us prevent some kind of undefined behavior bugs from being # inadvertently introduced[3] to the codebase from now on. # # Also, notice that, dynamic memory allocations won't be affected by # this change: # # "Flexible array members have incomplete type, and so the sizeof operator # may not be applied. As a quirk of the original implementation of # zero-length arrays, sizeof evaluates to zero."[1] # # This issue was found with the help of Coccinelle. # # [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html # [2] https://github.com/KSPP/linux/issues/21 # [3] commit 76497732932f ("cxgb3/l2t: Fix undefined behaviour") # # Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> # < /opt/cross/kisskb/gcc-4.6.3-nolibc/ia64-linux/bin/ia64-linux-gcc --version # < /opt/cross/kisskb/gcc-4.6.3-nolibc/ia64-linux/bin/ia64-linux-ld --version # < git log --format=%s --max-count=1 d5180902be1cf9f6b33a7b270bac94db453f2d80 # < make -s -j 48 ARCH=ia64 O=/kisskb/build/gustavoars_ia64-defconfig_ia64 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/ia64-linux/bin/ia64-linux- defconfig # < make -s -j 48 ARCH=ia64 O=/kisskb/build/gustavoars_ia64-defconfig_ia64 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/ia64-linux/bin/ia64-linux- help # make -s -j 48 ARCH=ia64 O=/kisskb/build/gustavoars_ia64-defconfig_ia64 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/ia64-linux/bin/ia64-linux- olddefconfig # make -s -j 48 ARCH=ia64 O=/kisskb/build/gustavoars_ia64-defconfig_ia64 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/ia64-linux/bin/ia64-linux- <stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp] /kisskb/src/fs/proc/inode.c: In function 'proc_reg_open': /kisskb/src/include/linux/list.h:72:12: 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/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl': /kisskb/src/kernel/printk/printk.c:204:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/mm/vmstat.c: In function 'sysctl_vm_numa_stat_handler': /kisskb/src/mm/vmstat.c:90:5: warning: 'oldval' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/ext4/extents.c: In function 'ext4_convert_unwritten_io_end_vec': /kisskb/src/fs/ext4/extents.c:5009:23: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/mm/hugetlb.c: In function 'alloc_pool_huge_page': /kisskb/src/mm/hugetlb.c:1426:5: warning: 'page' may be used uninitialized in this function [-Wuninitialized] /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/fs/nfs/read.c: In function 'nfs_read_completion': /kisskb/src/fs/nfs/read.c:196:5: warning: value computed is not used [-Wunused-value] /kisskb/src/fs/nfs/read.c: In function 'nfs_readpage': /kisskb/src/fs/nfs/read.c:353:2: warning: value computed is not used [-Wunused-value] /kisskb/src/fs/nfsd/nfs4xdr.c: In function 'nfsd4_encode_components_esc': /kisskb/src/fs/nfsd/nfs4xdr.c:2151:9: warning: 'str' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/gpu/drm/drm_dp_mst_topology.c: In function 'drm_dp_mst_dsc_aux_for_port': /kisskb/src/drivers/gpu/drm/drm_dp_mst_topology.c:5400:9: warning: missing braces around initializer [-Wmissing-braces] /kisskb/src/drivers/gpu/drm/drm_dp_mst_topology.c:5400:9: warning: (near initialization for 'desc.ident') [-Wmissing-braces] /kisskb/src/drivers/usb/core/devio.c: In function 'async_completed': /kisskb/src/drivers/usb/core/devio.c:625:23: warning: 'errno' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/io_uring.c: In function '__io_sqe_files_update': /kisskb/src/fs/io_uring.c:5824:13: warning: 'err' may be used uninitialized in this function [-Wuninitialized] No errors detected in 22094 functions. Completed OK # rm -rf /kisskb/build/gustavoars_ia64-defconfig_ia64 # Build took: 0:01:57.371519

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