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This fix resolves warnings reported during compiling with different gcc
optimization levels in debug mode,
Test tools:
gcc version 4.4.7 20120313 (Red Hat 4.4.7-16) (GCC)
Linux version: 2.6.32-573.18.1.el6.x86_64, Red Hat Enterprise Linux Server release 6.1 (Santiago)
List of warnings:
CFLAGS=-O1 ./configure --enable-debug ;make
../../module/icp/core/kcf_sched.c: In function ‘kcf_aop_done’:
../../module/icp/core/kcf_sched.c:499: error: ‘fg’ may be used uninitialized in this function
../../module/icp/core/kcf_sched.c:499: note: ‘fg’ was declared here
CFLAGS=-Os ./configure --enable-debug ; make
libzfs_dataset.c: In function ‘zfs_prop_set_list’:
libzfs_dataset.c:1575: error: ‘nvl_len’ may be used uninitialized in this function
Signed-off-by: GeLiXin <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #5022
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If there is no explicit note in the .S files, the obj file will mark it
as requiring an executable stack. This is unneeded and causes issues on
hardened systems.
More info:
https://wiki.gentoo.org/wiki/Hardened/GNU_stack_quickstart
Signed-off-by: Jason Zaman <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #4947
Closes #4962
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The constify plugin will automatically constify a class of types that contain
only function pointers. The icp structs fail to build if this is enabled with
the following error. The no_const attribute makes the plugin skip those
structs.
module/icp/spi/kcf_spi.c: In function ‘copy_ops_vector_v1’:
module/icp/spi/kcf_spi.c:61:16: error: assignment of read-only location ‘*dst_ops->cou.cou_v1.co_control_ops’
*((dst)->ops) = *((src)->ops);
^
module/icp/spi/kcf_spi.c:74:2: note: in expansion of macro ‘KCF_SPI_COPY_OPS’
KCF_SPI_COPY_OPS(src_ops, dst_ops, co_control_ops);
^
Signed-off-by: Jason Zaman <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #4947
Closes #4962
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The newly added icp module uses a hardcoded value of CDDL for the license,
however in local development one might want to change that to something
else in order to facilitate compiling against lock debugging enabled kernel.
All modules of the zfs use the ZFS_META_LICNSE string which is replaced with
the value held in the META file. One can modify the value in the META file
once and then rerun the configure to have all modules' licenses changed.
Change the icp module license string to be ZFS_META_LICENSE so that it
falls under the same paradigm.
Signed-off-by: Nikolay Borisov <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #4905
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The patch fixes small number of errors/false positives reported by `cppcheck`,
static analysis tool for C/C++.
cppcheck 1.72
$ cppcheck . --force --quiet
[cmd/zfs/zfs_main.c:4444]: (error) Possible null pointer dereference: who_perm
[cmd/zfs/zfs_main.c:4445]: (error) Possible null pointer dereference: who_perm
[cmd/zfs/zfs_main.c:4446]: (error) Possible null pointer dereference: who_perm
[cmd/zpool/zpool_iter.c:317]: (error) Uninitialized variable: nvroot
[cmd/zpool/zpool_vdev.c:1526]: (error) Memory leak: child
[lib/libefi/rdwr_efi.c:1118]: (error) Memory leak: efi_label
[lib/libuutil/uu_misc.c:207]: (error) va_list 'args' was opened but not closed by va_end().
[lib/libzfs/libzfs_import.c:1554]: (error) Dangerous usage of 'diskname' (strncpy doesn't always null-terminate it).
[lib/libzfs/libzfs_sendrecv.c:3279]: (error) Dereferencing 'cp' after it is deallocated / released
[tests/zfs-tests/cmd/file_write/file_write.c:154]: (error) Possible null pointer dereference: operation
[tests/zfs-tests/cmd/randfree_file/randfree_file.c:90]: (error) Memory leak: buf
[cmd/zinject/zinject.c:1068]: (error) Uninitialized variable: dataset
[module/icp/io/sha2_mod.c:698]: (error) Uninitialized variable: blocks_per_int64
Signed-off-by: Gvozden Neskovic <[email protected]>
Signed-off-by: Chunwei Chen <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #1392
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Signed-off-by: Tom Caputi <[email protected]>
Signed-off-by: Chris Dunlop <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Issue #4329
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A port of the Illumos Crypto Framework to a Linux kernel module (found
in module/icp). This is needed to do the actual encryption work. We cannot
use the Linux kernel's built in crypto api because it is only exported to
GPL-licensed modules. Having the ICP also means the crypto code can run on
any of the other kernels under OpenZFS. I ended up porting over most of the
internals of the framework, which means that porting over other API calls (if
we need them) should be fairly easy. Specifically, I have ported over the API
functions related to encryption, digests, macs, and crypto templates. The ICP
is able to use assembly-accelerated encryption on amd64 machines and AES-NI
instructions on Intel chips that support it. There are place-holder
directories for similar assembly optimizations for other architectures
(although they have not been written).
Signed-off-by: Tom Caputi <[email protected]>
Signed-off-by: Tony Hutter <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Issue #4329
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