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2015-04-15Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds3-5/+18
Pull networking updates from David Miller: 1) Add BQL support to via-rhine, from Tino Reichardt. 2) Integrate SWITCHDEV layer support into the DSA layer, so DSA drivers can support hw switch offloading. From Floria Fainelli. 3) Allow 'ip address' commands to initiate multicast group join/leave, from Madhu Challa. 4) Many ipv4 FIB lookup optimizations from Alexander Duyck. 5) Support EBPF in cls_bpf classifier and act_bpf action, from Daniel Borkmann. 6) Remove the ugly compat support in ARP for ugly layers like ax25, rose, etc. And use this to clean up the neigh layer, then use it to implement MPLS support. All from Eric Biederman. 7) Support L3 forwarding offloading in switches, from Scott Feldman. 8) Collapse the LOCAL and MAIN ipv4 FIB tables when possible, to speed up route lookups even further. From Alexander Duyck. 9) Many improvements and bug fixes to the rhashtable implementation, from Herbert Xu and Thomas Graf. In particular, in the case where an rhashtable user bulk adds a large number of items into an empty table, we expand the table much more sanely. 10) Don't make the tcp_metrics hash table per-namespace, from Eric Biederman. 11) Extend EBPF to access SKB fields, from Alexei Starovoitov. 12) Split out new connection request sockets so that they can be established in the main hash table. Much less false sharing since hash lookups go direct to the request sockets instead of having to go first to the listener then to the request socks hashed underneath. From Eric Dumazet. 13) Add async I/O support for crytpo AF_ALG sockets, from Tadeusz Struk. 14) Support stable privacy address generation for RFC7217 in IPV6. From Hannes Frederic Sowa. 15) Hash network namespace into IP frag IDs, also from Hannes Frederic Sowa. 16) Convert PTP get/set methods to use 64-bit time, from Richard Cochran. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1816 commits) fm10k: Bump driver version to 0.15.2 fm10k: corrected VF multicast update fm10k: mbx_update_max_size does not drop all oversized messages fm10k: reset head instead of calling update_max_size fm10k: renamed mbx_tx_dropped to mbx_tx_oversized fm10k: update xcast mode before synchronizing multicast addresses fm10k: start service timer on probe fm10k: fix function header comment fm10k: comment next_vf_mbx flow fm10k: don't handle mailbox events in iov_event path and always process mailbox fm10k: use separate workqueue for fm10k driver fm10k: Set PF queues to unlimited bandwidth during virtualization fm10k: expose tx_timeout_count as an ethtool stat fm10k: only increment tx_timeout_count in Tx hang path fm10k: remove extraneous "Reset interface" message fm10k: separate PF only stats so that VF does not display them fm10k: use hw->mac.max_queues for stats fm10k: only show actual queues, not the maximum in hardware fm10k: allow creation of VLAN on default vid fm10k: fix unused warnings ...
2015-04-14Merge branch 'akpm' (patches from Andrew)Linus Torvalds24-134/+279
Merge first patchbomb from Andrew Morton: - arch/sh updates - ocfs2 updates - kernel/watchdog feature - about half of mm/ * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (122 commits) Documentation: update arch list in the 'memtest' entry Kconfig: memtest: update number of test patterns up to 17 arm: add support for memtest arm64: add support for memtest memtest: use phys_addr_t for physical addresses mm: move memtest under mm mm, hugetlb: abort __get_user_pages if current has been oom killed mm, mempool: do not allow atomic resizing memcg: print cgroup information when system panics due to panic_on_oom mm: numa: remove migrate_ratelimited mm: fold arch_randomize_brk into ARCH_HAS_ELF_RANDOMIZE mm: split ET_DYN ASLR from mmap ASLR s390: redefine randomize_et_dyn for ELF_ET_DYN_BASE mm: expose arch_mmap_rnd when available s390: standardize mmap_rnd() usage powerpc: standardize mmap_rnd() usage mips: extract logic for mmap_rnd() arm64: standardize mmap_rnd() usage x86: standardize mmap_rnd() usage arm: factor out mmap ASLR into mmap_rnd ...
2015-04-14mm, mempool: do not allow atomic resizingDavid Rientjes1-4/+2
Allocating a large number of elements in atomic context could quickly deplete memory reserves, so just disallow atomic resizing entirely. Nothing currently uses mempool_resize() with anything other than GFP_KERNEL, so convert existing callers to drop the gfp_mask. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: David Rientjes <rientjes@google.com> Acked-by: Steffen Maier <maier@linux.vnet.ibm.com> [zfcp] Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Steve French <sfrench@samba.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-14mm: fold arch_randomize_brk into ARCH_HAS_ELF_RANDOMIZEKees Cook1-3/+1
The arch_randomize_brk() function is used on several architectures, even those that don't support ET_DYN ASLR. To avoid bulky extern/#define tricks, consolidate the support under CONFIG_ARCH_HAS_ELF_RANDOMIZE for the architectures that support it, while still handling CONFIG_COMPAT_BRK. Signed-off-by: Kees Cook <keescook@chromium.org> Cc: Hector Marco-Gisbert <hecmargi@upv.es> Cc: Russell King <linux@arm.linux.org.uk> Reviewed-by: Ingo Molnar <mingo@kernel.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: "David A. Long" <dave.long@linaro.org> Cc: Andrey Ryabinin <a.ryabinin@samsung.com> Cc: Arun Chandran <achandran@mvista.com> Cc: Yann Droneaud <ydroneaud@opteya.com> Cc: Min-Hua Chen <orca.chen@gmail.com> Cc: Paul Burton <paul.burton@imgtec.com> Cc: Alex Smith <alex@alex-smith.me.uk> Cc: Markos Chandras <markos.chandras@imgtec.com> Cc: Vineeth Vijayan <vvijayan@mvista.com> Cc: Jeff Bailey <jeffbailey@google.com> Cc: Michael Holzheu <holzheu@linux.vnet.ibm.com> Cc: Ben Hutchings <ben@decadent.org.uk> Cc: Behan Webster <behanw@converseincode.com> Cc: Ismael Ripoll <iripoll@upv.es> Cc: Jan-Simon Mller <dl9pf@gmx.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-14mm: split ET_DYN ASLR from mmap ASLRKees Cook2-17/+4
This fixes the "offset2lib" weakness in ASLR for arm, arm64, mips, powerpc, and x86. The problem is that if there is a leak of ASLR from the executable (ET_DYN), it means a leak of shared library offset as well (mmap), and vice versa. Further details and a PoC of this attack is available here: http://cybersecurity.upv.es/attacks/offset2lib/offset2lib.html With this patch, a PIE linked executable (ET_DYN) has its own ASLR region: $ ./show_mmaps_pie 54859ccd6000-54859ccd7000 r-xp ... /tmp/show_mmaps_pie 54859ced6000-54859ced7000 r--p ... /tmp/show_mmaps_pie 54859ced7000-54859ced8000 rw-p ... /tmp/show_mmaps_pie 7f75be764000-7f75be91f000 r-xp ... /lib/x86_64-linux-gnu/libc.so.6 7f75be91f000-7f75beb1f000 ---p ... /lib/x86_64-linux-gnu/libc.so.6 7f75beb1f000-7f75beb23000 r--p ... /lib/x86_64-linux-gnu/libc.so.6 7f75beb23000-7f75beb25000 rw-p ... /lib/x86_64-linux-gnu/libc.so.6 7f75beb25000-7f75beb2a000 rw-p ... 7f75beb2a000-7f75beb4d000 r-xp ... /lib64/ld-linux-x86-64.so.2 7f75bed45000-7f75bed46000 rw-p ... 7f75bed46000-7f75bed47000 r-xp ... 7f75bed47000-7f75bed4c000 rw-p ... 7f75bed4c000-7f75bed4d000 r--p ... /lib64/ld-linux-x86-64.so.2 7f75bed4d000-7f75bed4e000 rw-p ... /lib64/ld-linux-x86-64.so.2 7f75bed4e000-7f75bed4f000 rw-p ... 7fffb3741000-7fffb3762000 rw-p ... [stack] 7fffb377b000-7fffb377d000 r--p ... [vvar] 7fffb377d000-7fffb377f000 r-xp ... [vdso] The change is to add a call the newly created arch_mmap_rnd() into the ELF loader for handling ET_DYN ASLR in a separate region from mmap ASLR, as was already done on s390. Removes CONFIG_BINFMT_ELF_RANDOMIZE_PIE, which is no longer needed. Signed-off-by: Kees Cook <keescook@chromium.org> Reported-by: Hector Marco-Gisbert <hecmargi@upv.es> Cc: Russell King <linux@arm.linux.org.uk> Reviewed-by: Ingo Molnar <mingo@kernel.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: "David A. Long" <dave.long@linaro.org> Cc: Andrey Ryabinin <a.ryabinin@samsung.com> Cc: Arun Chandran <achandran@mvista.com> Cc: Yann Droneaud <ydroneaud@opteya.com> Cc: Min-Hua Chen <orca.chen@gmail.com> Cc: Paul Burton <paul.burton@imgtec.com> Cc: Alex Smith <alex@alex-smith.me.uk> Cc: Markos Chandras <markos.chandras@imgtec.com> Cc: Vineeth Vijayan <vvijayan@mvista.com> Cc: Jeff Bailey <jeffbailey@google.com> Cc: Michael Holzheu <holzheu@linux.vnet.ibm.com> Cc: Ben Hutchings <ben@decadent.org.uk> Cc: Behan Webster <behanw@converseincode.com> Cc: Ismael Ripoll <iripoll@upv.es> Cc: Jan-Simon Mller <dl9pf@gmx.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-14fs/binfmt_elf.c: fix bug in loading of PIE binariesMichael Davidson1-1/+8
With CONFIG_ARCH_BINFMT_ELF_RANDOMIZE_PIE enabled, and a normal top-down address allocation strategy, load_elf_binary() will attempt to map a PIE binary into an address range immediately below mm->mmap_base. Unfortunately, load_elf_ binary() does not take account of the need to allocate sufficient space for the entire binary which means that, while the first PT_LOAD segment is mapped below mm->mmap_base, the subsequent PT_LOAD segment(s) end up being mapped above mm->mmap_base into the are that is supposed to be the "gap" between the stack and the binary. Since the size of the "gap" on x86_64 is only guaranteed to be 128MB this means that binaries with large data segments > 128MB can end up mapping part of their data segment over their stack resulting in corruption of the stack (and the data segment once the binary starts to run). Any PIE binary with a data segment > 128MB is vulnerable to this although address randomization means that the actual gap between the stack and the end of the binary is normally greater than 128MB. The larger the data segment of the binary the higher the probability of failure. Fix this by calculating the total size of the binary in the same way as load_elf_interp(). Signed-off-by: Michael Davidson <md@google.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Jiri Kosina <jkosina@suse.cz> Cc: Kees Cook <keescook@chromium.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-14cleancache: remove limit on the number of cleancache enabled filesystemsVladimir Davydov1-1/+1
The limit equals 32 and is imposed by the number of entries in the fs_poolid_map and shared_fs_poolid_map. Nowadays it is insufficient, because with containers on board a Linux host can have hundreds of active fs mounts. These maps were introduced by commit 49a9ab815acb8 ("mm: cleancache: lazy initialization to allow tmem backends to build/run as modules") in order to allow compiling cleancache drivers as modules. Real pool ids are stored in these maps while super_block->cleancache_poolid points to an entry in the map, so that on cleancache registration we can walk over all (if there are <= 32 of them, of course) cleancache-enabled super blocks and assign real pool ids. Actually, there is absolutely no need in these maps, because we can iterate over all super blocks immediately using iterate_supers. This is not racy, because cleancache_init_ops is called from mount_fs with super_block->s_umount held for writing, while iterate_supers takes this semaphore for reading, so if we call iterate_supers after setting cleancache_ops, all super blocks that had been created before cleancache_register_ops was called will be assigned pool ids by the action function of iterate_supers while all newer super blocks will receive it in cleancache_init_fs. This patch therefore removes the maps and hence the artificial limit on the number of cleancache enabled filesystems. Signed-off-by: Vladimir Davydov <vdavydov@parallels.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: David Vrabel <david.vrabel@citrix.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Stefan Hengelein <ilendir@googlemail.com> Cc: Florian Schmaus <fschmaus@gmail.com> Cc: Andor Daam <andor.daam@googlemail.com> Cc: Dan Magenheimer <dan.magenheimer@oracle.com> Cc: Bob Liu <lliubbo@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-14cleancache: zap uuid arg of cleancache_init_shared_fsVladimir Davydov1-1/+1
Use super_block->s_uuid instead. Every shared filesystem using cleancache must now initialize super_block->s_uuid before calling cleancache_init_shared_fs. The only one on the tree, ocfs2, already meets this requirement. Signed-off-by: Vladimir Davydov <vdavydov@parallels.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: David Vrabel <david.vrabel@citrix.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Stefan Hengelein <ilendir@googlemail.com> Cc: Florian Schmaus <fschmaus@gmail.com> Cc: Andor Daam <andor.daam@googlemail.com> Cc: Dan Magenheimer <dan.magenheimer@oracle.com> Cc: Bob Liu <lliubbo@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-14ocfs2: copy fs uuid to superblockVladimir Davydov1-0/+2
Currently, maximal number of cleancache enabled filesystems equals 32, which is insufficient nowadays, because a Linux host can have hundreds of containers on board, each of which might want its own filesystem. This patch set targets at removing this limitation - see patch 4 for more details. Patches 1-3 prepare the code for this change. This patch (of 4): This will allow us to remove the uuid argument from cleancache_init_shared_fs. Signed-off-by: Vladimir Davydov <vdavydov@parallels.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: David Vrabel <david.vrabel@citrix.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Stefan Hengelein <ilendir@googlemail.com> Cc: Florian Schmaus <fschmaus@gmail.com> Cc: Andor Daam <andor.daam@googlemail.com> Cc: Dan Magenheimer <dan.magenheimer@oracle.com> Cc: Bob Liu <lliubbo@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-14page_writeback: clean up mess around cancel_dirty_page()Konstantin Khlebnikov3-8/+3
This patch replaces cancel_dirty_page() with a helper function account_page_cleaned() which only updates counters. It's called from truncate_complete_page() and from try_to_free_buffers() (hack for ext3). Page is locked in both cases, page-lock protects against concurrent dirtiers: see commit 2d6d7f982846 ("mm: protect set_page_dirty() from ongoing truncation"). Delete_from_page_cache() shouldn't be called for dirty pages, they must be handled by caller (either written or truncated). This patch treats final dirty accounting fixup at the end of __delete_from_page_cache() as a debug check and adds WARN_ON_ONCE() around it. If something removes dirty pages without proper handling that might be a bug and unwritten data might be lost. Hugetlbfs has no dirty pages accounting, ClearPageDirty() is enough here. cancel_dirty_page() in nfs_wb_page_cancel() is redundant. This is helper for nfs_invalidate_page() and it's called only in case complete invalidation. The mess was started in v2.6.20 after commits 46d2277c796f ("Clean up and make try_to_free_buffers() not race with dirty pages") and 3e67c0987d75 ("truncate: clear page dirtiness before running try_to_free_buffers()") first was reverted right in v2.6.20 in commit ecdfc9787fe5 ("Resurrect 'try_to_free_buffers()' VM hackery"), second in v2.6.25 commit a2b345642f53 ("Fix dirty page accounting leak with ext3 data=journal"). Custom fixes were introduced between these points. NFS in v2.6.23, commit 1b3b4a1a2deb ("NFS: Fix a write request leak in nfs_invalidate_page()"). Kludge in __delete_from_page_cache() in v2.6.24, commit 3a6927906f1b ("Do dirty page accounting when removing a page from the page cache"). Since v2.6.25 all of them are redundant. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Cc: Tejun Heo <tj@kernel.org> Cc: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-14ocfs2: make mlog_errno return the errnoAndrew Morton1-2/+3
ocfs2 does mlog_errno(v); return v; in many places. Change mlog_errno() so we can do return mlog_errno(v); For some weird reason this patch reduces the size of ocfs2 by 6k: akpm3:/usr/src/25> size fs/ocfs2/ocfs2.ko text data bss dec hex filename 1146613 82767 832192 2061572 1f7504 fs/ocfs2/ocfs2.ko-before 1140857 82767 832192 2055816 1f5e88 fs/ocfs2/ocfs2.ko-after [dan.carpenter@oracle.com: double evaluation concerns in mlog_errno()] Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: alex chen <alex.chen@huawei.com> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-14ocfs2: check if the ocfs2 lock resource has been initialized before calling ↵alex chen1-0/+5
ocfs2_dlm_lock If ocfs2 lockres has not been initialized before calling ocfs2_dlm_lock, the lock won't be dropped and then will lead umount hung. The case is described below: ocfs2_mknod ocfs2_mknod_locked __ocfs2_mknod_locked ocfs2_journal_access_di Failed because of -ENOMEM or other reasons, the inode lockres has not been initialized yet. iput(inode) ocfs2_evict_inode ocfs2_delete_inode ocfs2_inode_lock ocfs2_inode_lock_full_nested __ocfs2_cluster_lock Succeeds and allocates a new dlm lockres. ocfs2_clear_inode ocfs2_open_unlock ocfs2_drop_inode_locks ocfs2_drop_lock Since lockres has not been initialized, the lock can't be dropped and the lockres can't be migrated, thus umount will hang forever. Signed-off-by: Alex Chen <alex.chen@huawei.com> Reviewed-by: Joseph Qi <joseph.qi@huawei.com> Reviewed-by: joyce.xue <xuejiufei@huawei.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-14ocfs2: logging: remove static buffer, use vsprintf extension %pVJoe Perches1-15/+18
Use the vsprintf %pV extension to avoid using a static buffer and remove the now unnecessary buffer. Signed-off-by: Joe Perches <joe@perches.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-14ocfs2: incorrect check for debugfs returnsChengyu Song3-16/+37
debugfs_create_dir and debugfs_create_file may return -ENODEV when debugfs is not configured, so the return value should be checked against ERROR_VALUE as well, otherwise the later dereference of the dentry pointer would crash the kernel. This patch tries to solve this problem by fixing certain checks. However, I have that found other call sites are protected by #ifdef CONFIG_DEBUG_FS. In current implementation, if CONFIG_DEBUG_FS is defined, then the above two functions will never return any ERROR_VALUE. So another possibility to fix this is to surround all the buggy checks/functions with the same #ifdef CONFIG_DEBUG_FS. But I'm not sure if this would break any functionality, as only OCFS2_FS_STATS declares dependency on DEBUG_FS. Signed-off-by: Chengyu Song <csong84@gatech.edu> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-14ocfs2: fix a typo in the copyright statementJakub Wilk1-1/+1
Signed-off-by: Jakub Wilk <jwilk@jwilk.net> Reviewed-by: Eric Ren <zren@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-14ocfs2: fix possible uninitialized variable accessJoseph Qi3-2/+10
In ocfs2_local_alloc_find_clear_bits and ocfs2_get_dentry, variable numfound and set may be uninitialized and then used in tracepoint. In ocfs2_xattr_block_get and ocfs2_delete_xattr_in_bucket, variable block_off and xv may be uninitialized and then used in the following logic due to unchecked return value. This patch fixes these possible issues. Signed-off-by: Joseph Qi <joseph.qi@huawei.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-14ocfs2: remove goto statement in ocfs2_check_dir_for_entry()Daeseok Youn1-8/+5
Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com> Reviewed-by: Joseph Qi <joseph.qi@huawei.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-14ocfs2: rollback the cleared bits if error occurs after ↵Joseph Qi1-0/+2
ocfs2_block_group_clear_bits ocfs2_block_group_clear_bits will clear bits in block group bitmap. Once it succeeds but fails in the following step, it will cause block group bitmap mismatch the corresponding count recorded in dinode. So rollback the cleared bits if error occurs. Signed-off-by: Joseph Qi <joseph.qi@huawei.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-14ocfs2: use ENOENT instead of EEXIST when get system file failsJoseph Qi2-3/+3
When ocfs2_get_system_file_inode fails, it is obscure to set the return value to -EEXIST. So change it to -ENOENT. Signed-off-by: Joseph Qi <joseph.qi@huawei.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-14ocfs2: use actual name length when find entry in ocfs2_orphan_del()Joseph Qi1-2/+2
If the namelen is 20 and name only has actual length 16, it will fail in ocfs2_find_entry because of mismatch. So use actual name length when find entry. Signed-off-by: Joseph Qi <joseph.qi@huawei.com> Signed-off-by: Yiwen Jiang <jiangyiwen@huawei.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-14ocfs2: dereferencing freed pointers in ocfs2_reflink()Dan Carpenter1-1/+1
The code at the "out" label assumes that "default_acl" and "acl" are NULL, but actually the pointers can be NULL, unitialized, or freed. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Mark Fasheh <mfasheh@suse.de> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-14ocfs2: fix typo in ocfs2_reserve_local_alloc_bitsJoseph Qi1-1/+1
In ocfs2_reserve_local_alloc_bits, it calls ocfs2_error if local alloc inode bitmap used bits mismatch, but the log mistakes it as free bits. Signed-off-by: Joseph Qi <joseph.qi@huawei.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-14ocfs2: do not use ocfs2_zero_extend during direct IOJoseph Qi1-8/+130
In ocfs2_direct_IO_write, we use ocfs2_zero_extend to zero allocated clusters in case of cluster not aligned. But ocfs2_zero_extend uses page cache, this may happen that it clears the data which blockdev_direct_IO has already written. We should use blkdev_issue_zeroout instead of ocfs2_zero_extend during direct IO. So fix this issue by introducing ocfs2_direct_IO_zero_extend and ocfs2_direct_IO_extend_no_holes. Reported-by: Yiwen Jiang <jiangyiwen@huawei.com> Signed-off-by: Joseph Qi <joseph.qi@huawei.com> Tested-by: Yiwen Jiang <jiangyiwen@huawei.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-14ocfs2: take inode lock when get clustersJoseph Qi1-1/+10
We need take inode lock when calling ocfs2_get_clusters. And use GFP_NOFS instead of GFP_KERNEL. Signed-off-by: Joseph Qi <joseph.qi@huawei.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-14ocfs2: no need get dinode bh when zeroing extendJoseph Qi1-5/+1
Since di_bh won't be used when zeroing extend, set it to NULL. Signed-off-by: Joseph Qi <joseph.qi@huawei.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-14ocfs2: fix a typing error in ocfs2_direct_IO_writeJoseph Qi1-1/+1
Only when direct IO succeeds we need consider zeroing out in case of cluster not aligned. Signed-off-by: Joseph Qi <joseph.qi@huawei.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-14ocfs2: avoid a pointless delay in o2cb_cluster_check()Daeseok Youn1-1/+1
Fix an off-by-one when attempting to avoid an msleep() on the final loop iteration. Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-14ocfs2: one function call less in user_cluster_connect() after error detectionMarkus Elfring1-4/+2
kfree() was called by user_cluster_connect() even if a previous call of the kzalloc() function failed. Return from this implementation directly after failure detection. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-14ocfs2: one function call less in ocfs2_init_slot_info() after error detectionMarkus Elfring1-1/+1
__ocfs2_free_slot_info() was called by ocfs2_init_slot_info() even if a call of the kzalloc() function failed. Return from this implementation directly after corresponding exception handling. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-14ocfs2: one function call less in ocfs2_merge_rec_right() after error detectionMarkus Elfring1-1/+1
ocfs2_free_path() was called by ocfs2_merge_rec_right() even if a call of the ocfs2_get_right_path() function failed. Return from this implementation directly after corresponding exception handling. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-14ocfs2: one function call less in ocfs2_merge_rec_left() after error detectionMarkus Elfring1-1/+1
ocfs2_free_path() was called by ocfs2_merge_rec_left() even if a call of the ocfs2_get_left_path() function failed. Return from this implementation directly after corresponding exception handling. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-14ocfs2: less function calls in ocfs2_figure_merge_contig_type() after error ↵Markus Elfring1-11/+13
detection ocfs2_free_path() was called in some cases by ocfs2_figure_merge_contig_type() during error handling even if the passed variables "left_path" and "right_path" contained still a null pointer. Corresponding implementation details could be improved by adjustments for jump labels according to the current Linux coding style convention. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-14ocfs2: less function calls in ocfs2_convert_inline_data_to_extents() after ↵Markus Elfring1-2/+3
error detection kfree() was called in a few cases by ocfs2_convert_inline_data_to_extents() during error handling even if the passed variable "pages" contained a null pointer. * Return from this implementation directly after failure detection for the function call "kcalloc". * Corresponding details could be improved by the introduction of another jump label. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-14ocfs2: delete unnecessary checks before three function callsMarkus Elfring3-14/+7
kfree(), ocfs2_free_path() and __ocfs2_free_slot_info() test whether their argument is NULL and then return immediately. Thus the test around their calls is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-14Merge tag 'gfs2-merge-window' of ↵Linus Torvalds12-95/+184
git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2 Pull GFS2 updates from Bob Peterson: "Here is a list of patches we've accumulated for GFS2 for the current upstream merge window. Most of the patches fix GFS2 quotas, which were not properly enforced. There's another that adds me as a GFS2 co-maintainer, and a couple patches that fix a kernel panic doing splice_write on GFS2 as well as a few correctness patches" * tag 'gfs2-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2: gfs2: fix quota refresh race in do_glock() gfs2: incorrect check for debugfs returns gfs2: allow fallocate to max out quotas/fs efficiently gfs2: allow quota_check and inplace_reserve to return available blocks gfs2: perform quota checks against allocation parameters GFS2: Move gfs2_file_splice_write outside of #ifdef GFS2: Allocate reservation during splice_write GFS2: gfs2_set_acl(): Cache "no acl" as well Add myself (Bob Peterson) as a maintainer of GFS2
2015-04-14Merge tag 'jfs-4.1' of git://github.com/kleikamp/linux-shaggyLinus Torvalds1-1/+1
Pull jfs update from David Kleikamp: "Not much this time. Just a one-liner format fix" * tag 'jfs-4.1' of git://github.com/kleikamp/linux-shaggy: jfs: %pf is only for function pointers
2015-04-14Merge tag 'please-pull-pstore' of ↵Linus Torvalds1-0/+3
git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux Pull pstore fix from Tony Luck: "Just one pstore fix this release" * tag 'please-pull-pstore' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux: pstore: Fix the ramoops module parameters update
2015-04-14Merge branch 'for-linus-1' of ↵Linus Torvalds50-836/+602
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs update from Al Viro: "Part one: - struct filename-related cleanups - saner iov_iter_init() replacements (and switching the syscalls to use of those) - ntfs switch to ->write_iter() (Anton) - aio cleanups and splitting iocb into common and async parts (Christoph) - assorted fixes (me, bfields, Andrew Elble) There's a lot more, including the completion of switchover to ->{read,write}_iter(), d_inode/d_backing_inode annotations, f_flags race fixes, etc, but that goes after #for-davem merge. David has pulled it, and once it's in I'll send the next vfs pull request" * 'for-linus-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (35 commits) sg_start_req(): use import_iovec() sg_start_req(): make sure that there's not too many elements in iovec blk_rq_map_user(): use import_single_range() sg_io(): use import_iovec() process_vm_access: switch to {compat_,}import_iovec() switch keyctl_instantiate_key_common() to iov_iter switch {compat_,}do_readv_writev() to {compat_,}import_iovec() aio_setup_vectored_rw(): switch to {compat_,}import_iovec() vmsplice_to_user(): switch to import_iovec() kill aio_setup_single_vector() aio: simplify arguments of aio_setup_..._rw() aio: lift iov_iter_init() into aio_setup_..._rw() lift iov_iter into {compat_,}do_readv_writev() NFS: fix BUG() crash in notify_change() with patch to chown_common() dcache: return -ESTALE not -EBUSY on distributed fs race NTFS: Version 2.1.32 - Update file write from aio_write to write_iter. VFS: Add iov_iter_fault_in_multipages_readable() drop bogus check in file_open_root() switch security_inode_getattr() to struct path * constify tomoyo_realpath_from_path() ...
2015-04-14Merge tag 'trace-4.1-tracefs' of ↵Linus Torvalds3-0/+655
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracefs from Steven Rostedt: "This adds the new tracefs file system. This has been in linux-next for more than one release, as I had it ready for the 4.0 merge window, but a last minute thing that needed to go into Linux first had to be done. That was that perf hard coded the file system number when reading /sys/kernel/debugfs/tracing directory making sure that the path had the debugfs mount # before it would parse the tracing file. This broke other use cases of perf, and the check is removed. Now when mounting /sys/kernel/debug, tracefs is automatically mounted in /sys/kernel/debug/tracing such that old tools will still see that path as expected. But now system admins can mount tracefs directly and not need to mount debugfs, which can expose security issues. A new directory is created when tracefs is configured such that system admins can now mount it separately (/sys/kernel/tracing)" * tag 'trace-4.1-tracefs' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: tracing: Have mkdir and rmdir be part of tracefs tracefs: Add directory /sys/kernel/tracing tracing: Automatically mount tracefs on debugfs/tracing tracing: Convert the tracing facility over to use tracefs tracefs: Add new tracefs file system tracing: Create cmdline tracer options on tracing fs init tracing: Only create tracer options files if directory exists debugfs: Provide a file creation function that also takes an initial size
2015-04-14Merge branch 'for-linus' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull trivial tree from Jiri Kosina: "Usual trivial tree updates. Nothing outstanding -- mostly printk() and comment fixes and unused identifier removals" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: goldfish: goldfish_tty_probe() is not using 'i' any more powerpc: Fix comment in smu.h qla2xxx: Fix printks in ql_log message lib: correct link to the original source for div64_u64 si2168, tda10071, m88ds3103: Fix firmware wording usb: storage: Fix printk in isd200_log_config() qla2xxx: Fix printk in qla25xx_setup_mode init/main: fix reset_device comment ipwireless: missing assignment goldfish: remove unreachable line of code coredump: Fix do_coredump() comment stacktrace.h: remove duplicate declaration task_struct smpboot.h: Remove unused function prototype treewide: Fix typo in printk messages treewide: Fix typo in printk messages mod_devicetable: fix comment for match_flags
2015-04-13Merge tag 'driver-core-4.1-rc1' of ↵Linus Torvalds2-3/+11
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core updates from Greg KH: "Here's the driver-core / kobject / lz4 tree update for 4.1-rc1. Everything here has been in linux-next for a while with no reported issues. It's mostly just coding style cleanups, with other minor changes in here as well, nothing big" * tag 'driver-core-4.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (32 commits) debugfs: allow bad parent pointers to be passed in stable_kernel_rules: Add clause about specification of kernel versions to patch. kobject: WARN as tip when call kobject_get() to a kobject not initialized lib/lz4: Pull out constant tables drivers: platform: parse IRQ flags from resources driver core: Make probe deferral more quiet drivers/core/of: Add symlink to device-tree from devices with an OF node device: Add dev_of_node() accessor drivers: base: fw: fix ret value when loading fw firmware: Avoid manual device_create_file() calls drivers/base: cacheinfo: validate device node for all the caches drivers/base: use tabs where possible in code indentation driver core: add missing blank line after declaration drivers: base: node: Delete space after pointer declaration drivers: base: memory: Use tabs instead of spaces firmware_class: Fix whitespace and indentation drivers: base: dma-mapping: Erase blank space after pointer drivers: base: class: Add a blank line after declarations attribute_container: fix missing blank lines after declarations drivers: base: memory: Fix switch indent ...
2015-04-12Merge branch 'for-linus' of ↵Linus Torvalds2-12/+25
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs and fs fixes from Al Viro: "Several AIO and OCFS2 fixes" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: ocfs2: _really_ sync the right range ocfs2_file_write_iter: keep return value and current position update in sync [regression] ocfs2: do *not* increment ->ki_pos twice ioctx_alloc(): fix vma (and file) leak on failure fix mremap() vs. ioctx_kill() race
2015-04-11switch {compat_,}do_readv_writev() to {compat_,}import_iovec()Al Viro1-16/+16
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-11aio_setup_vectored_rw(): switch to {compat_,}import_iovec()Al Viro1-19/+9
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-11vmsplice_to_user(): switch to import_iovec()Al Viro1-16/+11
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-11kill aio_setup_single_vector()Al Viro1-17/+1
identical to import_single_range() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-11aio: simplify arguments of aio_setup_..._rw()Al Viro1-28/+17
We don't need req in either of those. We don't need nr_segs in caller. We don't really need len in caller either - iov_iter_count(&iter) will do. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-11aio: lift iov_iter_init() into aio_setup_..._rw()Al Viro1-6/+11
the only non-trivial detail is that we do it before rw_verify_area(), so we'd better cap the length ourselves in aio_setup_single_rw() case (for vectored case rw_copy_check_uvector() will do that for us). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-11lift iov_iter into {compat_,}do_readv_writev()Al Viro1-31/+23
get it closer to matching {compat_,}rw_copy_check_uvector(). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-11Merge branch 'iocb' into for-nextAl Viro45-170/+155
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