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2020-10-18Merge tag 'for-linus-5.10-rc1-part2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs Pull more ubi and ubifs updates from Richard Weinberger: "UBI: - Correctly use kthread_should_stop in ubi worker UBIFS: - Fixes for memory leaks while iterating directory entries - Fix for a user triggerable error message - Fix for a space accounting bug in authenticated mode" * tag 'for-linus-5.10-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs: ubifs: journal: Make sure to not dirty twice for auth nodes ubifs: setflags: Don't show error message when vfs_ioc_setflags_prepare() fails ubifs: ubifs_jnl_change_xattr: Remove assertion 'nlink > 0' for host inode ubi: check kthread_should_stop() after the setting of task state ubifs: dent: Fix some potential memory leaks while iterating entries ubifs: xattr: Fix some potential memory leaks while iterating entries
2020-10-18Merge tag 'for-linus-5.10-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs Pull ubifs updates from Richard Weinberger: - Kernel-doc fixes - Fixes for memory leaks in authentication option parsing * tag 'for-linus-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs: ubifs: mount_ubifs: Release authentication resource in error handling path ubifs: Don't parse authentication mount options in remount process ubifs: Fix a memleak after dumping authentication mount options ubifs: Fix some kernel-doc warnings in tnc.c ubifs: Fix some kernel-doc warnings in replay.c ubifs: Fix some kernel-doc warnings in gc.c ubifs: Fix 'hash' kernel-doc warning in auth.c
2020-10-13Merge tag 'block-5.10-2020-10-12' of git://git.kernel.dk/linux-blockLinus Torvalds
Pull block updates from Jens Axboe: - Series of merge handling cleanups (Baolin, Christoph) - Series of blk-throttle fixes and cleanups (Baolin) - Series cleaning up BDI, seperating the block device from the backing_dev_info (Christoph) - Removal of bdget() as a generic API (Christoph) - Removal of blkdev_get() as a generic API (Christoph) - Cleanup of is-partition checks (Christoph) - Series reworking disk revalidation (Christoph) - Series cleaning up bio flags (Christoph) - bio crypt fixes (Eric) - IO stats inflight tweak (Gabriel) - blk-mq tags fixes (Hannes) - Buffer invalidation fixes (Jan) - Allow soft limits for zone append (Johannes) - Shared tag set improvements (John, Kashyap) - Allow IOPRIO_CLASS_RT for CAP_SYS_NICE (Khazhismel) - DM no-wait support (Mike, Konstantin) - Request allocation improvements (Ming) - Allow md/dm/bcache to use IO stat helpers (Song) - Series improving blk-iocost (Tejun) - Various cleanups (Geert, Damien, Danny, Julia, Tetsuo, Tian, Wang, Xianting, Yang, Yufen, yangerkun) * tag 'block-5.10-2020-10-12' of git://git.kernel.dk/linux-block: (191 commits) block: fix uapi blkzoned.h comments blk-mq: move cancel of hctx->run_work to the front of blk_exit_queue blk-mq: get rid of the dead flush handle code path block: get rid of unnecessary local variable block: fix comment and add lockdep assert blk-mq: use helper function to test hw stopped block: use helper function to test queue register block: remove redundant mq check block: invoke blk_mq_exit_sched no matter whether have .exit_sched percpu_ref: don't refer to ref->data if it isn't allocated block: ratelimit handle_bad_sector() message blk-throttle: Re-use the throtl_set_slice_end() blk-throttle: Open code __throtl_de/enqueue_tg() blk-throttle: Move service tree validation out of the throtl_rb_first() blk-throttle: Move the list operation after list validation blk-throttle: Fix IO hang for a corner case blk-throttle: Avoid tracking latency if low limit is invalid blk-throttle: Avoid getting the current time if tg->last_finish_time is 0 blk-throttle: Remove a meaningless parameter for throtl_downgrade_state() block: Remove redundant 'return' statement ...
2020-10-11ubifs: mount_ubifs: Release authentication resource in error handling pathZhihao Cheng
Release the authentication related resource in some error handling branches in mount_ubifs(). Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com> Cc: <stable@vger.kernel.org> # 4.20+ Fixes: d8a22773a12c6d7 ("ubifs: Enable authentication support") Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Richard Weinberger <richard@nod.at>
2020-10-11ubifs: Don't parse authentication mount options in remount processZhihao Cheng
There is no need to dump authentication options while remounting, because authentication initialization can only be doing once in the first mount process. Dumping authentication mount options in remount process may cause memory leak if UBIFS has already been mounted with old authentication mount options. Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com> Cc: <stable@vger.kernel.org> # 4.20+ Fixes: d8a22773a12c6d7 ("ubifs: Enable authentication support") Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Richard Weinberger <richard@nod.at>
2020-10-11ubifs: Fix a memleak after dumping authentication mount optionsZhihao Cheng
Fix a memory leak after dumping authentication mount options in error handling branch. Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com> Cc: <stable@vger.kernel.org> # 4.20+ Fixes: d8a22773a12c6d7 ("ubifs: Enable authentication support") Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Richard Weinberger <richard@nod.at>
2020-09-29ubifs: journal: Make sure to not dirty twice for auth nodesRichard Weinberger
When removing the last reference of an inode the size of an auth node is already part of write_len. So we must not call ubifs_add_auth_dirt(). Call it only when needed. Cc: <stable@vger.kernel.org> Cc: Sascha Hauer <s.hauer@pengutronix.de> Cc: Kristof Havasi <havasiefr@gmail.com> Fixes: 6a98bc4614de ("ubifs: Add authentication nodes to journal") Reported-and-tested-by: Kristof Havasi <havasiefr@gmail.com> Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Richard Weinberger <richard@nod.at>
2020-09-24bdi: initialize ->ra_pages and ->io_pages in bdi_initChristoph Hellwig
Set up a readahead size by default, as very few users have a good reason to change it. This means code, ecryptfs, and orangefs now set up the values while they were previously missing it, while ubifs, mtd and vboxsf manually set it to 0 to avoid readahead. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Acked-by: David Sterba <dsterba@suse.com> [btrfs] Acked-by: Richard Weinberger <richard@nod.at> [ubifs, mtd] Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-09-22ubifs: use fscrypt_prepare_new_inode() and fscrypt_set_context()Eric Biggers
Convert ubifs to use the new functions fscrypt_prepare_new_inode() and fscrypt_set_context(). Unlike ext4 and f2fs, this doesn't appear to fix any deadlock bug. But it does shorten the code slightly and get all filesystems using the same helper functions, so that fscrypt_inherit_context() can be removed. It also fixes an incorrect error code where ubifs returned EPERM instead of the expected ENOKEY. Link: https://lore.kernel.org/r/20200917041136.178600-6-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com>
2020-09-17ubifs: Fix some kernel-doc warnings in tnc.cWang Hai
Fixes the following W=1 kernel build warning(s): fs/ubifs/tnc.c:3479: warning: Excess function parameter 'inum' description in 'dbg_check_inode_size' fs/ubifs/tnc.c:366: warning: Excess function parameter 'node' description in 'lnc_free' @inum in 'dbg_check_inode_size' should be @inode, fix it. @node in 'lnc_free' is not in use, Remove it. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Wang Hai <wanghai38@huawei.com> Signed-off-by: Richard Weinberger <richard@nod.at>
2020-09-17ubifs: Fix some kernel-doc warnings in replay.cWang Hai
Fixes the following W=1 kernel build warning(s): fs/ubifs/replay.c:942: warning: Excess function parameter 'ref_lnum' description in 'validate_ref' fs/ubifs/replay.c:942: warning: Excess function parameter 'ref_offs' description in 'validate_ref' They're not in use. Remove them. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Wang Hai <wanghai38@huawei.com> Signed-off-by: Richard Weinberger <richard@nod.at>
2020-09-17ubifs: Fix some kernel-doc warnings in gc.cWang Hai
Fixes the following W=1 kernel build warning(s): fs/ubifs/gc.c:70: warning: Excess function parameter 'buf' description in 'switch_gc_head' fs/ubifs/gc.c:70: warning: Excess function parameter 'len' description in 'switch_gc_head' fs/ubifs/gc.c:70: warning: Excess function parameter 'lnum' description in 'switch_gc_head' fs/ubifs/gc.c:70: warning: Excess function parameter 'offs' description in 'switch_gc_head' They're not in use. Remove them. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Wang Hai <wanghai38@huawei.com> Signed-off-by: Richard Weinberger <richard@nod.at>
2020-09-17ubifs: Fix 'hash' kernel-doc warning in auth.cWang Hai
Fixes the following W=1 kernel build warning(s): fs/ubifs/auth.c:66: warning: Excess function parameter 'hash' description in 'ubifs_prepare_auth_node' Rename hash to inhash. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Wang Hai <wanghai38@huawei.com> Signed-off-by: Richard Weinberger <richard@nod.at>
2020-09-17ubifs: setflags: Don't show error message when vfs_ioc_setflags_prepare() failsZhihao Cheng
Following process will trigger ubifs_err: 1. useradd -m freg (Under root) 2. cd /home/freg && mkdir mp (Under freg) 3. mount -t ubifs /dev/ubi0_0 /home/freg/mp (Under root) 4. cd /home/freg && echo 123 > mp/a (Under root) 5. cd mp && chown freg a && chgrp freg a && chmod 777 a (Under root) 6. chattr +i a (Under freg) UBIFS error (ubi0:0 pid 1723): ubifs_ioctl [ubifs]: can't modify inode 65 attributes chattr: Operation not permitted while setting flags on a This is not an UBIFS problem, it was caused by task priviliage checking on file operations. Remove error message printing from kernel just like other filesystems (eg. ext4), since we already have enough information from userspace tools. Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com> Signed-off-by: Richard Weinberger <richard@nod.at>
2020-09-17ubifs: ubifs_jnl_change_xattr: Remove assertion 'nlink > 0' for host inodeZhihao Cheng
Changing xattr of a temp file will trigger following assertion failed and make ubifs turn into readonly filesystem: ubifs_assert_failed [ubifs]: UBIFS assert failed: host->i_nlink > 0, in fs/ubifs/journal.c:1801 Reproducer: 1. fd = open(__O_TMPFILE) 2. fsetxattr(fd, key, value2, XATTR_CREATE) 3. fsetxattr(fd, key, value2, XATTR_REPLACE) Fix this by removing assertion 'nlink > 0' for host inode. Reported-by: Chengsong Ke <kechengsong@huawei.com> Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com> Signed-off-by: Richard Weinberger <richard@nod.at>
2020-09-17ubifs: dent: Fix some potential memory leaks while iterating entriesZhihao Cheng
Fix some potential memory leaks in error handling branches while iterating dent entries. For example, function dbg_check_dir() forgets to free pdent if it exists. Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com> Cc: <stable@vger.kernel.org> Fixes: 1e51764a3c2ac05a2 ("UBIFS: add new flash file system") Signed-off-by: Richard Weinberger <richard@nod.at>
2020-09-17ubifs: xattr: Fix some potential memory leaks while iterating entriesZhihao Cheng
Fix some potential memory leaks in error handling branches while iterating xattr entries. For example, function ubifs_tnc_remove_ino() forgets to free pxent if it exists. Similar problems also exist in ubifs_purge_xattrs(), ubifs_add_orphan() and ubifs_jnl_write_inode(). Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com> Cc: <stable@vger.kernel.org> Fixes: 1e51764a3c2ac05a2 ("UBIFS: add new flash file system") Signed-off-by: Richard Weinberger <richard@nod.at>
2020-09-07fscrypt: drop unused inode argument from fscrypt_fname_alloc_bufferJeff Layton
Signed-off-by: Jeff Layton <jlayton@kernel.org> Link: https://lore.kernel.org/r/20200810142139.487631-1-jlayton@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com>
2020-08-23treewide: Use fallthrough pseudo-keywordGustavo A. R. Silva
Replace the existing /* fall through */ comments and its variants with the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary fall-through markings when it is the case. [1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
2020-08-10Merge tag 'for-linus-5.9-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs Pull JFFS2, UBI and UBIFS updates from Richard Weinberger: "JFFS2: - Fix for a corner case while mounting - Fix for an use-after-free issue UBI: - Fix for a memory load while attaching - Don't produce an anchor PEB with fastmap being disabled UBIFS: - Fix for orphan inode logic - Spelling fixes - New mount option to specify filesystem version" * tag 'for-linus-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs: jffs2: fix UAF problem jffs2: fix jffs2 mounting failure ubifs: Fix wrong orphan node deletion in ubifs_jnl_update|rename ubi: fastmap: Free fastmap next anchor peb during detach ubi: fastmap: Don't produce the initial next anchor PEB when fastmap is disabled ubifs: misc.h: delete a duplicated word ubifs: add option to specify version for new file systems
2020-08-02ubifs: Fix wrong orphan node deletion in ubifs_jnl_update|renameZhihao Cheng
There a wrong orphan node deleting in error handling path in ubifs_jnl_update() and ubifs_jnl_rename(), which may cause following error msg: UBIFS error (ubi0:0 pid 1522): ubifs_delete_orphan [ubifs]: missing orphan ino 65 Fix this by checking whether the node has been operated for adding to orphan list before being deleted, Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com> Fixes: 823838a486888cf484e ("ubifs: Add hashes to the tree node cache") Signed-off-by: Richard Weinberger <richard@nod.at>
2020-08-02ubifs: misc.h: delete a duplicated wordRandy Dunlap
Drop the repeated word "as" in a comment. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Richard Weinberger <richard@nod.at> Cc: linux-mtd@lists.infradead.org Signed-off-by: Richard Weinberger <richard@nod.at>
2020-08-02ubifs: add option to specify version for new file systemsMartin Kaistra
Instead of creating ubifs file systems with UBIFS_FORMAT_VERSION by default, add a module parameter ubifs.default_version to allow the user to specify the desired version. Valid values are 4 to UBIFS_FORMAT_VERSION (currently 5). This way, one can for example create a file system with version 4 on kernel 4.19 which can still be mounted rw when downgrading to kernel 4.9. Signed-off-by: Martin Kaistra <martin.kaistra@linutronix.de> Signed-off-by: Richard Weinberger <richard@nod.at>
2020-07-16treewide: Remove uninitialized_var() usageKees Cook
Using uninitialized_var() is dangerous as it papers over real bugs[1] (or can in the future), and suppresses unrelated compiler warnings (e.g. "unused variable"). If the compiler thinks it is uninitialized, either simply initialize the variable or make compiler changes. In preparation for removing[2] the[3] macro[4], remove all remaining needless uses with the following script: git grep '\buninitialized_var\b' | cut -d: -f1 | sort -u | \ xargs perl -pi -e \ 's/\buninitialized_var\(([^\)]+)\)/\1/g; s:\s*/\* (GCC be quiet|to make compiler happy) \*/$::g;' drivers/video/fbdev/riva/riva_hw.c was manually tweaked to avoid pathological white-space. No outstanding warnings were found building allmodconfig with GCC 9.3.0 for x86_64, i386, arm64, arm, powerpc, powerpc64le, s390x, mips, sparc64, alpha, and m68k. [1] https://lore.kernel.org/lkml/20200603174714.192027-1-glider@google.com/ [2] https://lore.kernel.org/lkml/CA+55aFw+Vbj0i=1TGqCR5vQkCzWJ0QxK6CernOU6eedsudAixw@mail.gmail.com/ [3] https://lore.kernel.org/lkml/CA+55aFwgbgqhbp1fkxvRKEpzyR5J8n1vKT1VZdz9knmPuXhOeg@mail.gmail.com/ [4] https://lore.kernel.org/lkml/CA+55aFz2500WfbKXAx8s67wrm9=yVJu65TpLgN_ybYNv0VEOKA@mail.gmail.com/ Reviewed-by: Leon Romanovsky <leonro@mellanox.com> # drivers/infiniband and mlx4/mlx5 Acked-by: Jason Gunthorpe <jgg@mellanox.com> # IB Acked-by: Kalle Valo <kvalo@codeaurora.org> # wireless drivers Reviewed-by: Chao Yu <yuchao0@huawei.com> # erofs Signed-off-by: Kees Cook <keescook@chromium.org>
2020-06-02mm: remove the pgprot argument to __vmallocChristoph Hellwig
The pgprot argument to __vmalloc is always PAGE_KERNEL now, so remove it. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Michael Kelley <mikelley@microsoft.com> [hyperv] Acked-by: Gao Xiang <xiang@kernel.org> [erofs] Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Wei Liu <wei.liu@kernel.org> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Christophe Leroy <christophe.leroy@c-s.fr> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: David Airlie <airlied@linux.ie> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Laura Abbott <labbott@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Nitin Gupta <ngupta@vflare.org> Cc: Robin Murphy <robin.murphy@arm.com> Cc: Sakari Ailus <sakari.ailus@linux.intel.com> Cc: Stephen Hemminger <sthemmin@microsoft.com> Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Paul Mackerras <paulus@ozlabs.org> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Will Deacon <will@kernel.org> Link: http://lkml.kernel.org/r/20200414131348.444715-22-hch@lst.de Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-01Merge branch 'linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 Pull crypto updates from Herbert Xu: "API: - Introduce crypto_shash_tfm_digest() and use it wherever possible. - Fix use-after-free and race in crypto_spawn_alg. - Add support for parallel and batch requests to crypto_engine. Algorithms: - Update jitter RNG for SP800-90B compliance. - Always use jitter RNG as seed in drbg. Drivers: - Add Arm CryptoCell driver cctrng. - Add support for SEV-ES to the PSP driver in ccp" * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (114 commits) crypto: hisilicon - fix driver compatibility issue with different versions of devices crypto: engine - do not requeue in case of fatal error crypto: cavium/nitrox - Fix a typo in a comment crypto: hisilicon/qm - change debugfs file name from qm_regs to regs crypto: hisilicon/qm - add DebugFS for xQC and xQE dump crypto: hisilicon/zip - add debugfs for Hisilicon ZIP crypto: hisilicon/hpre - add debugfs for Hisilicon HPRE crypto: hisilicon/sec2 - add debugfs for Hisilicon SEC crypto: hisilicon/qm - add debugfs to the QM state machine crypto: hisilicon/qm - add debugfs for QM crypto: stm32/crc32 - protect from concurrent accesses crypto: stm32/crc32 - don't sleep in runtime pm crypto: stm32/crc32 - fix multi-instance crypto: stm32/crc32 - fix run-time self test issue. crypto: stm32/crc32 - fix ext4 chksum BUG_ON() crypto: hisilicon/zip - Use temporary sqe when doing work crypto: hisilicon - add device error report through abnormal irq crypto: hisilicon - remove codes of directly report device errors through MSI crypto: hisilicon - QM memory management optimization crypto: hisilicon - unify initial value assignment into QM ...
2020-05-17ubifs: fix wrong use of crypto_shash_descsize()Eric Biggers
crypto_shash_descsize() returns the size of the shash_desc context needed to compute the hash, not the size of the hash itself. crypto_shash_digestsize() would be correct, or alternatively using c->hash_len and c->hmac_desc_len which already store the correct values. But actually it's simpler to just use stack arrays, so do that instead. Fixes: 49525e5eecca ("ubifs: Add helper functions for authentication support") Fixes: da8ef65f9573 ("ubifs: Authenticate replayed journal") Cc: <stable@vger.kernel.org> # v4.20+ Cc: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Eric Biggers <ebiggers@google.com> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Richard Weinberger <richard@nod.at>
2020-05-08ubifs: use crypto_shash_tfm_digest()Eric Biggers
Instead of manually allocating a 'struct shash_desc' on the stack and calling crypto_shash_digest(), switch to using the new helper function crypto_shash_tfm_digest() which does this for us. Cc: linux-mtd@lists.infradead.org Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-04-09ubifs: remove broken lazytime supportChristoph Hellwig
When "ubifs: introduce UBIFS_ATIME_SUPPORT to ubifs" introduced atime support to ubifs, it also added lazytime support. As far as I can tell the lazytime support is terminally broken, as it causes mark_inode_dirty_sync to be called from __writeback_single_inode, which will then trigger the locking assert in ubifs_dirty_inode. Just remove the broken lazytime support for now, it can be added back later, especially as some infrastructure changes should make that easier soon. Fixes: 8c1c5f263833 ("ubifs: introduce UBIFS_ATIME_SUPPORT to ubifs") Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Richard Weinberger <richard@nod.at>
2020-04-07Merge tag 'for-linus-5.7-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs Pull UBI and UBIFS updates from Richard Weinberger: - Fix for memory leaks around UBIFS orphan handling - Fix for memory leaks around UBI fastmap - Remove zero-length array from ubi-media.h - Fix for TNC lookup in UBIFS orphan code * tag 'for-linus-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs: ubi: ubi-media.h: Replace zero-length array with flexible-array member ubifs: Fix out-of-bounds memory access caused by abnormal value of node_len ubi: fastmap: Only produce the initial anchor PEB when fastmap is used ubi: fastmap: Free unused fastmap anchor peb during detach ubifs: ubifs_add_orphan: Fix a memory leak bug ubifs: ubifs_jnl_write_inode: Fix a memory leak bug ubifs: Fix ubifs_tnc_lookup() usage in do_kill_orphans()
2020-03-30ubifs: Fix out-of-bounds memory access caused by abnormal value of node_lenLiu Song
In “ubifs_check_node”, when the value of "node_len" is abnormal, the code will goto label of "out_len" for execution. Then, in the following "ubifs_dump_node", if inode type is "UBIFS_DATA_NODE", in "print_hex_dump", an out-of-bounds access may occur due to the wrong "ch->len". Therefore, when the value of "node_len" is abnormal, data length should to be adjusted to a reasonable safe range. At this time, structured data is not credible, so dump the corrupted data directly for analysis. Signed-off-by: Liu Song <liu.song11@zte.com.cn> Signed-off-by: Richard Weinberger <richard@nod.at>
2020-03-30ubifs: ubifs_add_orphan: Fix a memory leak bugZhihao Cheng
Memory leak occurs when files with extended attributes are added to orphan list. Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com> Fixes: 988bec41318f3fa897e2f8 ("ubifs: orphan: Handle xattrs like files") Signed-off-by: Richard Weinberger <richard@nod.at>
2020-03-30ubifs: ubifs_jnl_write_inode: Fix a memory leak bugZhihao Cheng
When inodes with extended attributes are evicted, xent is not freed in one exit branch. Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com> Fixes: 9ca2d732644484488db3112 ("ubifs: Limit number of xattrs per inode") Signed-off-by: Richard Weinberger <richard@nod.at>
2020-03-30ubifs: Fix ubifs_tnc_lookup() usage in do_kill_orphans()Richard Weinberger
Orphans are allowed to point to deleted inodes. So -ENOENT is not a fatal error. Reported-by: Кочетков Максим <fido_max@inbox.ru> Reported-and-tested-by: "Christian Berger" <Christian.Berger@de.bosch.com> Tested-by: Karl Olsen <karl@micro-technic.com> Tested-by: Jef Driesen <jef.driesen@niko.eu> Fixes: ee1438ce5dc4 ("ubifs: Check link count of inodes when killing orphans.") Signed-off-by: Richard Weinberger <richard@nod.at>
2020-03-19ubifs: wire up FS_IOC_GET_ENCRYPTION_NONCEEric Biggers
This new ioctl retrieves a file's encryption nonce, which is useful for testing. See the corresponding fs/crypto/ patch for more details. Link: https://lore.kernel.org/r/20200314205052.93294-5-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com>
2020-02-05Merge branch 'imm.timestamp' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs timestamp updates from Al Viro: "More 64bit timestamp work" * 'imm.timestamp' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: kernfs: don't bother with timestamp truncation fs: Do not overload update_time fs: Delete timespec64_trunc() fs: ubifs: Eliminate timespec64_trunc() usage fs: ceph: Delete timespec64_trunc() usage fs: cifs: Delete usage of timespec64_trunc fs: fat: Eliminate timespec64_trunc() usage utimes: Clamp the timestamps in notify_change()
2020-01-30Merge tag 'upstream-5.6-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs Pull UBI/UBIFS updates from Miquel Raynal: "This pull request contains mostly fixes for UBI and UBIFS: UBI: - Fixes for memory leaks in error paths - Fix for an logic error in a fastmap selfcheck UBIFS: - Fix for FS_IOC_SETFLAGS related to fscrypt flag - Support for FS_ENCRYPT_FL - Fix for a dead lock in bulk-read mode" Sent on behalf of Richard Weinberger who is traveling. * tag 'upstream-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs: ubi: Fix an error pointer dereference in error handling code ubifs: Fix memory leak from c->sup_node ubifs: Fix ino_t format warnings in orphan_delete() ubifs: Fix deadlock in concurrent bulk-read and writepage ubifs: Fix wrong memory allocation ubi: Free the normal volumes in error paths of ubi_attach_mtd_dev() ubi: Check the presence of volume before call ubi_fastmap_destroy_checkmap() ubifs: Add support for FS_ENCRYPT_FL ubifs: Fix FS_IOC_SETFLAGS unexpectedly clearing encrypt flag ubi: wl: Remove set but not used variable 'prev_e' ubi: fastmap: Fix inverted logic in seen selfcheck
2020-01-22ubifs: allow both hash and disk name to be provided in no-key namesEric Biggers
In order to support a new dirhash method that is a secret-keyed hash over the plaintext filenames (which will be used by encrypted+casefolded directories on ext4 and f2fs), fscrypt will be switching to a new no-key name format that always encodes the dirhash in the name. UBIFS isn't happy with this because it has assertions that verify that either the hash or the disk name is provided, not both. Change it to use the disk name if one is provided, even if a hash is available too; else use the hash. Link: https://lore.kernel.org/r/20200120223201.241390-6-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com>
2020-01-22ubifs: don't trigger assertion on invalid no-key filenameEric Biggers
If userspace provides an invalid fscrypt no-key filename which encodes a hash value with any of the UBIFS node type bits set (i.e. the high 3 bits), gracefully report ENOENT rather than triggering ubifs_assert(). Test case with kvm-xfstests shell: . fs/ubifs/config . ~/xfstests/common/encrypt dev=$(__blkdev_to_ubi_volume /dev/vdc) ubiupdatevol $dev -t mount $dev /mnt -t ubifs mkdir /mnt/edir xfs_io -c set_encpolicy /mnt/edir rm /mnt/edir/_,,,,,DAAAAAAAAAAAAAAAAAAAAAAAAAA With the bug, the following assertion fails on the 'rm' command: [ 19.066048] UBIFS error (ubi0:0 pid 379): ubifs_assert_failed: UBIFS assert failed: !(hash & ~UBIFS_S_KEY_HASH_MASK), in fs/ubifs/key.h:170 Fixes: f4f61d2cc6d8 ("ubifs: Implement encrypted filenames") Cc: <stable@vger.kernel.org> # v4.10+ Link: https://lore.kernel.org/r/20200120223201.241390-5-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com>
2020-01-20ubifs: use IS_ENCRYPTED() instead of ubifs_crypt_is_encrypted()Eric Biggers
There's no need for the ubifs_crypt_is_encrypted() function anymore. Just use IS_ENCRYPTED() instead, like ext4 and f2fs do. IS_ENCRYPTED() checks the VFS-level flag instead of the UBIFS-specific flag, but it shouldn't change any behavior since the flags are kept in sync. Link: https://lore.kernel.org/r/20191209212721.244396-1-ebiggers@kernel.org Acked-by: Richard Weinberger <richard@nod.at> Signed-off-by: Eric Biggers <ebiggers@google.com>
2020-01-19ubifs: Fix memory leak from c->sup_nodeQuanyang Wang
The c->sup_node is allocated in function ubifs_read_sb_node but is not freed. This will cause memory leak as below: unreferenced object 0xbc9ce000 (size 4096): comm "mount", pid 500, jiffies 4294952946 (age 315.820s) hex dump (first 32 bytes): 31 18 10 06 06 7b f1 11 02 00 00 00 00 00 00 00 1....{.......... 00 10 00 00 06 00 00 00 00 00 00 00 08 00 00 00 ................ backtrace: [<d1c503cd>] ubifs_read_superblock+0x48/0xebc [<a20e14bd>] ubifs_mount+0x974/0x1420 [<8589ecc3>] legacy_get_tree+0x2c/0x50 [<5f1fb889>] vfs_get_tree+0x28/0xfc [<bbfc7939>] do_mount+0x4f8/0x748 [<4151f538>] ksys_mount+0x78/0xa0 [<d59910a9>] ret_fast_syscall+0x0/0x54 [<1cc40005>] 0x7ea02790 Free it in ubifs_umount and in the error path of mount_ubifs. Fixes: fd6150051bec ("ubifs: Store read superblock node") Signed-off-by: Quanyang Wang <quanyang.wang@windriver.com> Signed-off-by: Richard Weinberger <richard@nod.at>
2020-01-17ubifs: Fix ino_t format warnings in orphan_delete()Geert Uytterhoeven
On alpha and s390x: fs/ubifs/debug.h:158:11: warning: format ‘%lu’ expects argument of type ‘long unsigned int’, but argument 4 has type ‘ino_t {aka unsigned int}’ [-Wformat=] ... fs/ubifs/orphan.c:132:3: note: in expansion of macro ‘dbg_gen’ dbg_gen("deleted twice ino %lu", orph->inum); ... fs/ubifs/orphan.c:140:3: note: in expansion of macro ‘dbg_gen’ dbg_gen("delete later ino %lu", orph->inum); __kernel_ino_t is "unsigned long" on most architectures, but not on alpha and s390x, where it is "unsigned int". Hence when printing an ino_t, it should always be cast to "unsigned long" first. Fix this by re-adding the recently removed casts. Fixes: 8009ce956c3d2802 ("ubifs: Don't leak orphans on memory during commit") Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Richard Weinberger <richard@nod.at>
2020-01-16ubifs: Fix deadlock in concurrent bulk-read and writepageZhihao Cheng
In ubifs, concurrent execution of writepage and bulk read on the same file may cause ABBA deadlock, for example (Reproduce method see Link): Process A(Bulk-read starts from page4) Process B(write page4 back) vfs_read wb_workfn or fsync ... ... generic_file_buffered_read write_cache_pages ubifs_readpage LOCK(page4) ubifs_bulk_read ubifs_writepage LOCK(ui->ui_mutex) ubifs_write_inode ubifs_do_bulk_read LOCK(ui->ui_mutex) find_or_create_page(alloc page4) ↑ LOCK(page4) <-- ABBA deadlock occurs! In order to ensure the serialization execution of bulk read, we can't remove the big lock 'ui->ui_mutex' in ubifs_bulk_read(). Instead, we allow ubifs_do_bulk_read() to lock page failed by replacing find_or_create_page(FGP_LOCK) with pagecache_get_page(FGP_LOCK | FGP_NOWAIT). Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com> Suggested-by: zhangyi (F) <yi.zhang@huawei.com> Cc: <Stable@vger.kernel.org> Fixes: 4793e7c5e1c ("UBIFS: add bulk-read facility") Link: https://bugzilla.kernel.org/show_bug.cgi?id=206153 Signed-off-by: Richard Weinberger <richard@nod.at>
2020-01-16ubifs: Fix wrong memory allocationSascha Hauer
In create_default_filesystem() when we allocate the idx node we must use the idx_node_size we calculated just one line before, not tmp, which contains completely other data. Fixes: c4de6d7e4319 ("ubifs: Refactor create_default_filesystem()") Cc: stable@vger.kernel.org # v4.20+ Reported-by: Naga Sureshkumar Relli <nagasure@xilinx.com> Tested-by: Naga Sureshkumar Relli <nagasure@xilinx.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Richard Weinberger <richard@nod.at>
2020-01-16ubifs: Add support for FS_ENCRYPT_FLEric Biggers
Make the FS_IOC_GETFLAGS ioctl on ubifs return the FS_ENCRYPT_FL flag on encrypted files, like ext4 and f2fs do. Also make this flag be ignored by FS_IOC_SETFLAGS, like ext4 and f2fs do, since it's a recognized flag but is not directly settable. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Richard Weinberger <richard@nod.at>
2020-01-16ubifs: Fix FS_IOC_SETFLAGS unexpectedly clearing encrypt flagEric Biggers
UBIFS's implementation of FS_IOC_SETFLAGS fails to preserve existing inode flags that aren't settable by FS_IOC_SETFLAGS, namely the encrypt flag. This causes the encrypt flag to be unexpectedly cleared. Fix it by preserving existing unsettable flags, like ext4 and f2fs do. Test case with kvm-xfstests shell: FSTYP=ubifs KEYCTL_PROG=keyctl . fs/ubifs/config . ~/xfstests/common/encrypt dev=$(__blkdev_to_ubi_volume /dev/vdc) ubiupdatevol -t $dev mount $dev /mnt -t ubifs k=$(_generate_session_encryption_key) mkdir /mnt/edir xfs_io -c "set_encpolicy $k" /mnt/edir echo contents > /mnt/edir/file chattr +i /mnt/edir/file chattr -i /mnt/edir/file With the bug, the following errors occur on the last command: [ 18.081559] fscrypt (ubifs, inode 67): Inconsistent encryption context (parent directory: 65) chattr: Operation not permitted while reading flags on /mnt/edir/file Fixes: d475a507457b ("ubifs: Add skeleton for fscrypto") Cc: <stable@vger.kernel.org> # v4.10+ Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Richard Weinberger <richard@nod.at>
2019-12-31fscrypt: Allow modular crypto algorithmsHerbert Xu
The commit 643fa9612bf1 ("fscrypt: remove filesystem specific build config option") removed modular support for fs/crypto. This causes the Crypto API to be built-in whenever fscrypt is enabled. This makes it very difficult for me to test modular builds of the Crypto API without disabling fscrypt which is a pain. As fscrypt is still evolving and it's developing new ties with the fs layer, it's hard to build it as a module for now. However, the actual algorithms are not required until a filesystem is mounted. Therefore we can allow them to be built as modules. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Link: https://lore.kernel.org/r/20191227024700.7vrzuux32uyfdgum@gondor.apana.org.au Signed-off-by: Eric Biggers <ebiggers@google.com>
2019-12-31fscrypt: don't check for ENOKEY from fscrypt_get_encryption_info()Eric Biggers
fscrypt_get_encryption_info() returns 0 if the encryption key is unavailable; it never returns ENOKEY. So remove checks for ENOKEY. Link: https://lore.kernel.org/r/20191209212348.243331-1-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com>
2019-12-08fs: ubifs: Eliminate timespec64_trunc() usageDeepa Dinamani
DEFAULT_TIME_GRAN is seconds granularity. We can just drop the nsec while creating the default root node. Delete the unneeded call to timespec64_trunc(). Also update the ktime_get_* api to match the one used in current_time(). This allows for the timestamps to be updated by using the same ktime_get_* api always. Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com> Cc: richard@nod.at Cc: linux-mtd@lists.infradead.org Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2019-12-08utimes: Clamp the timestamps in notify_change()Amir Goldstein
Push clamping timestamps into notify_change(), so in-kernel callers like nfsd and overlayfs will get similar timestamp set behavior as utimes. AV: get rid of clamping in ->setattr() instances; we don't need to bother with that there, with notify_change() doing normalization in all cases now (it already did for implicit case, since current_time() clamps). Suggested-by: Miklos Szeredi <mszeredi@redhat.com> Fixes: 42e729b9ddbb ("utimes: Clamp the timestamps before update") Cc: stable@vger.kernel.org # v5.4 Cc: Deepa Dinamani <deepa.kernel@gmail.com> Cc: Jeff Layton <jlayton@kernel.org> Signed-off-by: Amir Goldstein <amir73il@gmail.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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