- 27 Feb, 2019 5 commits
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YueHaibing authored
Remove duplicated include. Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Madhumitha Prabakaran authored
Fix the check to improve readibility CHECK: Alignment should match open parenthesis Signed-off-by: Madhumitha Prabakaran <madhumithabiw@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Gao Xiang authored
EROFS has an optimized path called TAIL merging, which is designed to merge multiple reads and the corresponding decompressions into one if these requests read continuous pages almost at the same time. In general, it behaves as follows: ________________________________________________________________ ... | TAIL . HEAD | PAGE | PAGE | TAIL . HEAD | ... _____|_combined page A_|________|________|_combined page B_|____ 1 ] -> [ 2 ] -> [ 3 If the above three reads are requested in the order 1-2-3, it will generate a large work chain rather than 3 individual work chains to reduce scheduling overhead and boost up sequential read. However, if Read 2 is processed slightly earlier than Read 1, currently it still generates 2 individual work chains (chain 1, 2) but it does in-place decompression for combined page A, moreover, if chain 2 decompresses ahead of chain 1, it will be a race and lead to corrupted decompressed page. This patch fixes it. Fixes: 3883a79a ("staging: erofs: introduce VLE decompression support") Cc: <stable@vger.kernel.org> # 4.19+ Signed-off-by: Gao Xiang <gaoxiang25@huawei.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Gao Xiang authored
Considering a read request with two decompressed file pages, If a decompression work cannot be started on the previous page due to memory pressure but in-memory LTP map lookup is done, builder->work should be still NULL. Moreover, if the current page also belongs to the same map, it won't try to start the decompression work again and then run into trouble. This patch aims to solve the above issue only with little changes as much as possible in order to make the fix backport easier. kernel message is: <4>[1051408f.015930s]SLUB: Unable to allocate memory on node -1, gfp=0x2408040(GFP_NOFS|__GFP_ZERO) <4>[1051408f.015930s] cache: erofs_compress, object size: 144, buffer size: 144, default order: 0, min order: 0 <4>[1051408f.015930s] node 0: slabs: 98, objs: 2744, free: 0 * Cannot allocate the decompression work <3>[1051408f.015960s]erofs: z_erofs_vle_normalaccess_readpages, readahead error at page 1008 of nid 5391488 * Note that the previous page was failed to read <0>[1051408f.015960s]Internal error: Accessing user space memory outside uaccess.h routines: 96000005 [#1] PREEMPT SMP ... <4>[1051408f.015991s]Hardware name: kirin710 (DT) ... <4>[1051408f.016021s]PC is at z_erofs_vle_work_add_page+0xa0/0x17c <4>[1051408f.016021s]LR is at z_erofs_do_read_page+0x12c/0xcf0 ... <4>[1051408f.018096s][<ffffff80c6fb0fd4>] z_erofs_vle_work_add_page+0xa0/0x17c <4>[1051408f.018096s][<ffffff80c6fb3814>] z_erofs_vle_normalaccess_readpages+0x1a0/0x37c <4>[1051408f.018096s][<ffffff80c6d670b8>] read_pages+0x70/0x190 <4>[1051408f.018127s][<ffffff80c6d6736c>] __do_page_cache_readahead+0x194/0x1a8 <4>[1051408f.018127s][<ffffff80c6d59318>] filemap_fault+0x398/0x684 <4>[1051408f.018127s][<ffffff80c6d8a9e0>] __do_fault+0x8c/0x138 <4>[1051408f.018127s][<ffffff80c6d8f90c>] handle_pte_fault+0x730/0xb7c <4>[1051408f.018127s][<ffffff80c6d8fe04>] __handle_mm_fault+0xac/0xf4 <4>[1051408f.018157s][<ffffff80c6d8fec8>] handle_mm_fault+0x7c/0x118 <4>[1051408f.018157s][<ffffff80c8c52998>] do_page_fault+0x354/0x474 <4>[1051408f.018157s][<ffffff80c8c52af8>] do_translation_fault+0x40/0x48 <4>[1051408f.018157s][<ffffff80c6c002f4>] do_mem_abort+0x80/0x100 <4>[1051408f.018310s]---[ end trace 9f4009a3283bd78b ]--- Fixes: 3883a79a ("staging: erofs: introduce VLE decompression support") Cc: <stable@vger.kernel.org> # 4.19+ Signed-off-by: Gao Xiang <gaoxiang25@huawei.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Gao Xiang authored
This patch resolves the following page use-after-free issue, z_erofs_vle_unzip: ... for (i = 0; i < nr_pages; ++i) { ... z_erofs_onlinepage_endio(page); (1) } for (i = 0; i < clusterpages; ++i) { page = compressed_pages[i]; if (page->mapping == mngda) (2) continue; /* recycle all individual staging pages */ (void)z_erofs_gather_if_stagingpage(page_pool, page); (3) WRITE_ONCE(compressed_pages[i], NULL); } ... After (1) is executed, page is freed and could be then reused, if compressed_pages is scanned after that, it could fall info (2) or (3) by mistake and that could finally be in a mess. This patch aims to solve the above issue only with little changes as much as possible in order to make the fix backport easier. Fixes: 3883a79a ("staging: erofs: introduce VLE decompression support") Cc: <stable@vger.kernel.org> # 4.19+ Signed-off-by: Gao Xiang <gaoxiang25@huawei.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 26 Feb, 2019 27 commits
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Florian Fainelli authored
port_switchdev_event() does not check that the target network device is actually backed by the ethsw driver, this could be problematic in a stacked environment case. Fixes: 44baaa43 ("staging: fsl-dpaa2/ethsw: Add Freescale DPAA2 Ethernet Switch driver") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Michael Straube authored
Use !x instead of x == NULL. Reported by checkpatch. Signed-off-by: Michael Straube <straube.linux@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Michael Straube authored
Add spaces around '*' to follow kernel coding style. Reported by checkpatch. Signed-off-by: Michael Straube <straube.linux@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Michael Straube authored
There are no definitions of odm_DIGbyRSSI_LPS(), ODM_PhyStatusQuery() and ODM_MacStatusQuery() in the driver code. So remove the unused declarations from the headers odm.h and odm_hwconfig.h. Signed-off-by: Michael Straube <straube.linux@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Michael Straube authored
Remove unnecessary blank line between declarations. Signed-off-by: Michael Straube <straube.linux@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Michael Straube authored
Replace tabs with spaces in declarations to cleanup whitespace. Signed-off-by: Michael Straube <straube.linux@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Gao Xiang authored
After commit 61922694 ("introduce a parallel variant of ->iterate()"), readdir can be done without taking exclusive inode lock of course. Signed-off-by: Gao Xiang <gaoxiang25@huawei.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Michael Straube authored
Remove unnecessary parentheses reported by checkpatch. Signed-off-by: Michael Straube <straube.linux@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Gao Xiang authored
VFS will take inode_lock for readdir, therefore no need to take page lock in readdir at all just as the majority of other generic filesystems. Signed-off-by: Gao Xiang <gaoxiang25@huawei.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Samuel Thibault authored
We often receive patches which erroneously try to use kstrtoul in these places. Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ian Abbott authored
The "ni_tio" module contains code to allocate, destroy and operate on a `struct ni_gpct_device`, which represents a number of counters spread over one or more blocks (or "chips"). `struct ni_gpct_device` includes an array member `regs` holding shadow copies of register values. Unfortunately, this is currently shared by each block of counters so they interfere with each other. This is a problem for the "ni_660x" module, which has 8 counters spread over 2 blocks. The `regs` storage needs to be two-dimensional, indexed by block (chip) number and register number. (It does not need to be three-dimensional because the registers for individual counters are intermingled within the block.) Change the `regs` member to an array pointer that can be indexed like a two-dimensional array to access the shadow storage for each register in each block. Allocate the storage in `ni_gpct_device_construct()` and free it in `ni_gpct_device_destroy()`. (`ni_gpct_device_construct()` can determine the number of blocks from the `num_counters` and `counters_per_chip` parameters.) Add new member `num_chips` to hold the number of chips. Use that to check that `chip_index` value is in range in the same places that check the register offset is in range. Remove the `counters_per_chip` member of `struct ni_gpct_device` as it is not needed anywhere and could be easily derived from the `num_counters` and `num_chips` members if required. Thanks to GitHub user "raabej" (real name unknown) for an initial implementation of this in the out-of-tree fork of the Comedi drivers. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Tetsuo Handa authored
ashmem_pin() is calling range_shrink() without checking whether range_alloc() succeeded. Also, doing memory allocation with ashmem_mutex held should be avoided because ashmem_shrink_scan() tries to hold it. Therefore, move memory allocation for range_alloc() to ashmem_pin_unpin() and make range_alloc() not to fail. This patch is mostly meant for backporting purpose for fuzz testing on stable/distributor kernels, for there is a plan to remove this code in near future. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Cc: stable@vger.kernel.org Reviewed-by: Joel Fernandes <joel@joelfernandes.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Bo YU authored
Fix sparse warning: drivers/staging/wilc1000/host_interface.c:450:30: warning: incorrect type in assignment (different base types) drivers/staging/wilc1000/host_interface.c:450:30: expected restricted __le16 [usertype] beacon_period drivers/staging/wilc1000/host_interface.c:450:30: got unsigned short [usertype] beacon_interval drivers/staging/wilc1000/host_interface.c:451:25: warning: incorrect type in assignment (different base types) drivers/staging/wilc1000/host_interface.c:451:25: expected restricted __le16 [usertype] cap_info drivers/staging/wilc1000/host_interface.c:451:25: got unsigned short [usertype] capability Signed-off-by: Bo YU <tsu.yubo@gmail.com> Reviewed-by: Ajay Singh <ajay.kathat@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Bhanusree Pola authored
Clean checkpatch.pl issue in various files: CHECK: Alignment should match open parenthesis Adjust parameters to match alignment with open paranthesis Signed-off-by: Bhanusree Pola <bhanusreemahesh@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Bhanusree Pola authored
Remove blank line to resolve checkpatch.pl issue: CHECK: Blank lines aren't necessary before a close brace '}' Signed-off-by: Bhanusree Pola <bhanusreemahesh@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Bhanusree Pola authored
Remove unnecessary blank line issue found with checkpatch.pl: CHECK: Please don't use multiple blank lines Signed-off-by: Bhanusree Pola <bhanusreemahesh@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Bhanusree Pola authored
Adjust parameters of "netdev_dbg" to match alignment with open parenthesis. Issue found using checkpatch.pl Signed-off-by: Bhanusree Pola <bhanusreemahesh@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Madhumitha Prabakaran authored
Fix the check to improve readibility. CHECK: Alignment should match open parenthesis Signed-off-by: Madhumitha Prabakaran <madhumithabiw@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Bhanusree Pola authored
Add blank line after the structure declaration, struct fwtty_port *port = tty->driver_data; Issue found using checkpatch.pl Signed-off-by: Bhanusree Pola <bhanusreemahesh@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Bhanusree Pola authored
Fix the checkpatch.pl warning: WARNING:line over 80 characters Move Parameters to the next lines with proper alignment Signed-off-by: Bhanusree Pola <bhanusreemahesh@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Bhanusree Pola authored
Remove unnecesessary extra blank line before the closing brace, to solve the checkpatch.pl check: CHECK: Extra blank line not required before closing brace '}' Signed-off-by: Bhanusree Pola <bhanusreemahesh@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Bhanusree Pola authored
Clear the warning found by checkpatch.pl WARNING:Alignment should match open parenthesis Adjust paremeters in fbtft_par_dbg and write_reg. Signed-off-by: Bhanusree Pola <bhanusreemahesh@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Bhagyashri Dighole authored
Removes the boilerplate license text. Signed-off-by: Bhagyashri Dighole <digholebhagyashri@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Bhagyashri Dighole authored
Adds the SPDX GPL-2.0 or BSD-2-clause license identifier, which solves the checkpatch.pl warnings: "WARNING: Missing or malformed SPDX-License-Identifier tag in line 1". Signed-off-by: Bhagyashri Dighole <digholebhagyashri@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Bhagyashri Dighole authored
Fix coding style alignment issues detected by checkpatch.pl Match alignments with parenthesis. Limit lines to 80 characters. Signed-off-by: Bhagyashri Dighole <digholebhagyashri@gmail.com> Acked-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Bhanusree Pola authored
Adjust "dev_dbg" parameters to match alignment with open parenthesis Issue found with checkpatch.pl Signed-off-by: Bhanusree Pola <bhanusreemahesh@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Bhanusree Pola authored
Replace 'unsigned' with 'unsigned int' to be specific with data type. Issue found with checkpatch.pl Signed-off-by: Bhanusree Pola <bhanusreemahesh@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 21 Feb, 2019 3 commits
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Sumit Pundir authored
Fixes misspelled "re-enable" in comment. Reported by checkpatch.pl Signed-off-by: Sumit Pundir <pundirsumit11@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Nathan Chancellor authored
Clang warns: drivers/staging/rtlwifi/halmac/halmac_88xx/halmac_func_88xx.c:2472:11: warning: implicit conversion from enumeration type 'enum halmac_cmd_process_status' to different enumeration type 'enum halmac_ret_status' [-Wenum-conversion] return HALMAC_CMD_PROCESS_ERROR; ~~~~~~ ^~~~~~~~~~~~~~~~~~~~~~~~ 1 warning generated. Fix this by using the proper enum for allocation failures, HALMAC_RET_MALLOC_FAIL, which is used in the rest of this file. Fixes: e4b08e16 ("staging: r8822be: check kzalloc return or bail") Link: https://github.com/ClangBuiltLinux/linux/issues/375Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Reviewed-by: Nicholas Mc Guire <hofrat@osadl.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Bhanusree Pola authored
- adds the SPDX GPL-2.0 license identifier which solves the checkpatch.pl warning - Removed license boilerplate text - Issue found with checkpatch.pl warning: "WARNING: Missing or malformed SPDX-License-Identifier tag in line 1" Signed-off-by: Bhanusree Pola <bhanusreemahesh@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 20 Feb, 2019 2 commits
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Gao Xiang authored
page_private(page) cannot be changed if page lock is taken. Besides, the corresponding workgroup won't be freed if the page is already protected by page lock, therefore no need to take rcu read lock. Signed-off-by: Gao Xiang <gaoxiang25@huawei.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Gao Xiang authored
In real scenario, there could be several threads accessing xattrs of the same xattr-uninitialized inode, and init_inode_xattrs() almost at the same time. That's actually an unexpected behavior, this patch closes the race. Fixes: b17500a0 ("staging: erofs: introduce xattr & acl support") Cc: <stable@vger.kernel.org> # 4.19+ Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Gao Xiang <gaoxiang25@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 19 Feb, 2019 3 commits
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Jann Horn authored
Replace an open-coded version of skb_put_zero() with a call to the helper. This is a cleanup and is also useful for potentially adding KASAN integration to SKBs in the future. Signed-off-by: Jann Horn <jannh@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Bhanusree Pola authored
Align code with open parantheses to improve the readability. Issue found using checkpatch.pl Signed-off-by: Bhanusree Pola <bhanusreemahesh@gmail.com> Reviewed-by: Gao Xiang <gaoxiang25@huawei.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Tetsuo Handa authored
syzbot is hitting lockdep warnings [1][2][3]. This patch tries to fix the warning by eliminating ashmem_shrink_scan() => {shmem|vfs}_fallocate() sequence. [1] https://syzkaller.appspot.com/bug?id=87c399f6fa6955006080b24142e2ce7680295ad4 [2] https://syzkaller.appspot.com/bug?id=7ebea492de7521048355fc84210220e1038a7908 [3] https://syzkaller.appspot.com/bug?id=e02419c12131c24e2a957ea050c2ab6dcbbc3270Reported-by: syzbot <syzbot+a76129f18c89f3e2ddd4@syzkaller.appspotmail.com> Reported-by: syzbot <syzbot+148c2885d71194f18d28@syzkaller.appspotmail.com> Reported-by: syzbot <syzbot+4b8b031b89e6b96c4b2e@syzkaller.appspotmail.com> Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Cc: stable@vger.kernel.org Acked-by: Joel Fernandes (Google) <joel@joelfernandes.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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