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2019-05-06Merge branch 'core-objtool-for-linus' of ↵Linus Torvalds1-0/+3
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull objtool updates from Ingo Molnar: "This is a series from Peter Zijlstra that adds x86 build-time uaccess validation of SMAP to objtool, which will detect and warn about the following uaccess API usage bugs and weirdnesses: - call to %s() with UACCESS enabled - return with UACCESS enabled - return with UACCESS disabled from a UACCESS-safe function - recursive UACCESS enable - redundant UACCESS disable - UACCESS-safe disables UACCESS As it turns out not leaking uaccess permissions outside the intended uaccess functionality is hard when the interfaces are complex and when such bugs are mostly dormant. As a bonus we now also check the DF flag. We had at least one high-profile bug in that area in the early days of Linux, and the checking is fairly simple. The checks performed and warnings emitted are: - call to %s() with DF set - return with DF set - return with modified stack frame - recursive STD - redundant CLD It's all x86-only for now, but later on this can also be used for PAN on ARM and objtool is fairly cross-platform in principle. While all warnings emitted by this new checking facility that got reported to us were fixed, there might be GCC version dependent warnings that were not reported yet - which we'll address, should they trigger. The warnings are non-fatal build warnings" * 'core-objtool-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (27 commits) mm/uaccess: Use 'unsigned long' to placate UBSAN warnings on older GCC versions x86/uaccess: Dont leak the AC flag into __put_user() argument evaluation sched/x86_64: Don't save flags on context switch objtool: Add Direction Flag validation objtool: Add UACCESS validation objtool: Fix sibling call detection objtool: Rewrite alt->skip_orig objtool: Add --backtrace support objtool: Rewrite add_ignores() objtool: Handle function aliases objtool: Set insn->func for alternatives x86/uaccess, kcov: Disable stack protector x86/uaccess, ftrace: Fix ftrace_likely_update() vs. SMAP x86/uaccess, ubsan: Fix UBSAN vs. SMAP x86/uaccess, kasan: Fix KASAN vs SMAP x86/smap: Ditch __stringify() x86/uaccess: Introduce user_access_{save,restore}() x86/uaccess, signal: Fix AC=1 bloat x86/uaccess: Always inline user_access_begin() x86/uaccess, xen: Suppress SMAP warnings ...
2019-05-06ubsan: Remove vla bound checks.Andrey Ryabinin1-1/+0
The kernel the kernel is built with -Wvla for some time, so is not supposed to have any variable length arrays. Remove vla bounds checking from ubsan since it's useless now. Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-04-30Merge tag 'selinux-pr-20190429' of ↵Linus Torvalds2-2/+0
git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux Pull selinux fix from Paul Moore: "One small patch for the stable folks to fix a problem when building against the latest glibc. I'll be honest and say that I'm not really thrilled with the idea of sending this up right now, but Greg is a little annoyed so here I figured I would at least send this" * tag 'selinux-pr-20190429' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux: selinux: use kernel linux/socket.h for genheaders and mdp
2019-04-29selinux: use kernel linux/socket.h for genheaders and mdpPaulo Alcantara2-2/+0
When compiling genheaders and mdp from a newer host kernel, the following error happens: In file included from scripts/selinux/genheaders/genheaders.c:18: ./security/selinux/include/classmap.h:238:2: error: #error New address family defined, please update secclass_map. #error New address family defined, please update secclass_map. ^~~~~ make[3]: *** [scripts/Makefile.host:107: scripts/selinux/genheaders/genheaders] Error 1 make[2]: *** [scripts/Makefile.build:599: scripts/selinux/genheaders] Error 2 make[1]: *** [scripts/Makefile.build:599: scripts/selinux] Error 2 make[1]: *** Waiting for unfinished jobs.... Instead of relying on the host definition, include linux/socket.h in classmap.h to have PF_MAX. Cc: stable@vger.kernel.org Signed-off-by: Paulo Alcantara <paulo@paulo.ac> Acked-by: Stephen Smalley <sds@tycho.nsa.gov> [PM: manually merge in mdp.c, subject line tweaks] Signed-off-by: Paul Moore <paul@paul-moore.com>
2019-04-19locking/atomics: Don't assume that scripts are executableAndrew Morton1-1/+1
patch(1) doesn't set the x bit on files. So if someone downloads and applies patch-4.21.xz, their kernel won't build. Fix that by executing /bin/sh. Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Mark Rutland <mark.rutland@arm.com> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-04-06fs: stream_open - opener for stream-like files so that read and write can ↵Kirill Smelkov1-0/+363
run simultaneously without deadlock Commit 9c225f2655e3 ("vfs: atomic f_pos accesses as per POSIX") added locking for file.f_pos access and in particular made concurrent read and write not possible - now both those functions take f_pos lock for the whole run, and so if e.g. a read is blocked waiting for data, write will deadlock waiting for that read to complete. This caused regression for stream-like files where previously read and write could run simultaneously, but after that patch could not do so anymore. See e.g. commit 581d21a2d02a ("xenbus: fix deadlock on writes to /proc/xen/xenbus") which fixes such regression for particular case of /proc/xen/xenbus. The patch that added f_pos lock in 2014 did so to guarantee POSIX thread safety for read/write/lseek and added the locking to file descriptors of all regular files. In 2014 that thread-safety problem was not new as it was already discussed earlier in 2006. However even though 2006'th version of Linus's patch was adding f_pos locking "only for files that are marked seekable with FMODE_LSEEK (thus avoiding the stream-like objects like pipes and sockets)", the 2014 version - the one that actually made it into the tree as 9c225f2655e3 - is doing so irregardless of whether a file is seekable or not. See https://lore.kernel.org/lkml/53022DB1.4070805@gmail.com/ https://lwn.net/Articles/180387 https://lwn.net/Articles/180396 for historic context. The reason that it did so is, probably, that there are many files that are marked non-seekable, but e.g. their read implementation actually depends on knowing current position to correctly handle the read. Some examples: kernel/power/user.c snapshot_read fs/debugfs/file.c u32_array_read fs/fuse/control.c fuse_conn_waiting_read + ... drivers/hwmon/asus_atk0110.c atk_debugfs_ggrp_read arch/s390/hypfs/inode.c hypfs_read_iter ... Despite that, many nonseekable_open users implement read and write with pure stream semantics - they don't depend on passed ppos at all. And for those cases where read could wait for something inside, it creates a situation similar to xenbus - the write could be never made to go until read is done, and read is waiting for some, potentially external, event, for potentially unbounded time -> deadlock. Besides xenbus, there are 14 such places in the kernel that I've found with semantic patch (see below): drivers/xen/evtchn.c:667:8-24: ERROR: evtchn_fops: .read() can deadlock .write() drivers/isdn/capi/capi.c:963:8-24: ERROR: capi_fops: .read() can deadlock .write() drivers/input/evdev.c:527:1-17: ERROR: evdev_fops: .read() can deadlock .write() drivers/char/pcmcia/cm4000_cs.c:1685:7-23: ERROR: cm4000_fops: .read() can deadlock .write() net/rfkill/core.c:1146:8-24: ERROR: rfkill_fops: .read() can deadlock .write() drivers/s390/char/fs3270.c:488:1-17: ERROR: fs3270_fops: .read() can deadlock .write() drivers/usb/misc/ldusb.c:310:1-17: ERROR: ld_usb_fops: .read() can deadlock .write() drivers/hid/uhid.c:635:1-17: ERROR: uhid_fops: .read() can deadlock .write() net/batman-adv/icmp_socket.c:80:1-17: ERROR: batadv_fops: .read() can deadlock .write() drivers/media/rc/lirc_dev.c:198:1-17: ERROR: lirc_fops: .read() can deadlock .write() drivers/leds/uleds.c:77:1-17: ERROR: uleds_fops: .read() can deadlock .write() drivers/input/misc/uinput.c:400:1-17: ERROR: uinput_fops: .read() can deadlock .write() drivers/infiniband/core/user_mad.c:985:7-23: ERROR: umad_fops: .read() can deadlock .write() drivers/gnss/core.c:45:1-17: ERROR: gnss_fops: .read() can deadlock .write() In addition to the cases above another regression caused by f_pos locking is that now FUSE filesystems that implement open with FOPEN_NONSEEKABLE flag, can no longer implement bidirectional stream-like files - for the same reason as above e.g. read can deadlock write locking on file.f_pos in the kernel. FUSE's FOPEN_NONSEEKABLE was added in 2008 in a7c1b990f715 ("fuse: implement nonseekable open") to support OSSPD. OSSPD implements /dev/dsp in userspace with FOPEN_NONSEEKABLE flag, with corresponding read and write routines not depending on current position at all, and with both read and write being potentially blocking operations: See https://github.com/libfuse/osspd https://lwn.net/Articles/308445 https://github.com/libfuse/osspd/blob/14a9cff0/osspd.c#L1406 https://github.com/libfuse/osspd/blob/14a9cff0/osspd.c#L1438-L1477 https://github.com/libfuse/osspd/blob/14a9cff0/osspd.c#L1479-L1510 Corresponding libfuse example/test also describes FOPEN_NONSEEKABLE as "somewhat pipe-like files ..." with read handler not using offset. However that test implements only read without write and cannot exercise the deadlock scenario: https://github.com/libfuse/libfuse/blob/fuse-3.4.2-3-ga1bff7d/example/poll.c#L124-L131 https://github.com/libfuse/libfuse/blob/fuse-3.4.2-3-ga1bff7d/example/poll.c#L146-L163 https://github.com/libfuse/libfuse/blob/fuse-3.4.2-3-ga1bff7d/example/poll.c#L209-L216 I've actually hit the read vs write deadlock for real while implementing my FUSE filesystem where there is /head/watch file, for which open creates separate bidirectional socket-like stream in between filesystem and its user with both read and write being later performed simultaneously. And there it is semantically not easy to split the stream into two separate read-only and write-only channels: https://lab.nexedi.com/kirr/wendelin.core/blob/f13aa600/wcfs/wcfs.go#L88-169 Let's fix this regression. The plan is: 1. We can't change nonseekable_open to include &~FMODE_ATOMIC_POS - doing so would break many in-kernel nonseekable_open users which actually use ppos in read/write handlers. 2. Add stream_open() to kernel to open stream-like non-seekable file descriptors. Read and write on such file descriptors would never use nor change ppos. And with that property on stream-like files read and write will be running without taking f_pos lock - i.e. read and write could be running simultaneously. 3. With semantic patch search and convert to stream_open all in-kernel nonseekable_open users for which read and write actually do not depend on ppos and where there is no other methods in file_operations which assume @offset access. 4. Add FOPEN_STREAM to fs/fuse/ and open in-kernel file-descriptors via steam_open if that bit is present in filesystem open reply. It was tempting to change fs/fuse/ open handler to use stream_open instead of nonseekable_open on just FOPEN_NONSEEKABLE flags, but grepping through Debian codesearch shows users of FOPEN_NONSEEKABLE, and in particular GVFS which actually uses offset in its read and write handlers https://codesearch.debian.net/search?q=-%3Enonseekable+%3D https://gitlab.gnome.org/GNOME/gvfs/blob/1.40.0-6-gcbc54396/client/gvfsfusedaemon.c#L1080 https://gitlab.gnome.org/GNOME/gvfs/blob/1.40.0-6-gcbc54396/client/gvfsfusedaemon.c#L1247-1346 https://gitlab.gnome.org/GNOME/gvfs/blob/1.40.0-6-gcbc54396/client/gvfsfusedaemon.c#L1399-1481 so if we would do such a change it will break a real user. 5. Add stream_open and FOPEN_STREAM handling to stable kernels starting from v3.14+ (the kernel where 9c225f2655 first appeared). This will allow to patch OSSPD and other FUSE filesystems that provide stream-like files to return FOPEN_STREAM | FOPEN_NONSEEKABLE in their open handler and this way avoid the deadlock on all kernel versions. This should work because fs/fuse/ ignores unknown open flags returned from a filesystem and so passing FOPEN_STREAM to a kernel that is not aware of this flag cannot hurt. In turn the kernel that is not aware of FOPEN_STREAM will be < v3.14 where just FOPEN_NONSEEKABLE is sufficient to implement streams without read vs write deadlock. This patch adds stream_open, converts /proc/xen/xenbus to it and adds semantic patch to automatically locate in-kernel places that are either required to be converted due to read vs write deadlock, or that are just safe to be converted because read and write do not use ppos and there are no other funky methods in file_operations. Regarding semantic patch I've verified each generated change manually - that it is correct to convert - and each other nonseekable_open instance left - that it is either not correct to convert there, or that it is not converted due to current stream_open.cocci limitations. The script also does not convert files that should be valid to convert, but that currently have .llseek = noop_llseek or generic_file_llseek for unknown reason despite file being opened with nonseekable_open (e.g. drivers/input/mousedev.c) Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: Yongzhi Pan <panyongzhi@gmail.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: David Vrabel <david.vrabel@citrix.com> Cc: Juergen Gross <jgross@suse.com> Cc: Miklos Szeredi <miklos@szeredi.hu> Cc: Tejun Heo <tj@kernel.org> Cc: Kirill Tkhai <ktkhai@virtuozzo.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Christoph Hellwig <hch@lst.de> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Julia Lawall <Julia.Lawall@lip6.fr> Cc: Nikolaus Rath <Nikolaus@rath.org> Cc: Han-Wen Nienhuys <hanwen@google.com> Signed-off-by: Kirill Smelkov <kirr@nexedi.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-04-03objtool: Add UACCESS validationPeter Zijlstra1-0/+3
It is important that UACCESS regions are as small as possible; furthermore the UACCESS state is not scheduled, so doing anything that might directly call into the scheduler will cause random code to be ran with UACCESS enabled. Teach objtool too track UACCESS state and warn about any CALL made while UACCESS is enabled. This very much includes the __fentry__() and __preempt_schedule() calls. Note that exceptions _do_ save/restore the UACCESS state, and therefore they can drive preemption. This also means that all exception handlers must have an otherwise redundant UACCESS disable instruction; therefore ignore this warning for !STT_FUNC code (exception handlers are not normal functions). Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-03-29Merge branch 'akpm' (patches from Andrew)Linus Torvalds1-1/+1
Merge misc fixes from Andrew Morton: "22 fixes" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (22 commits) fs/proc/proc_sysctl.c: fix NULL pointer dereference in put_links fs: fs_parser: fix printk format warning checkpatch: add %pt as a valid vsprintf extension mm/migrate.c: add missing flush_dcache_page for non-mapped page migrate drivers/block/zram/zram_drv.c: fix idle/writeback string compare mm/page_isolation.c: fix a wrong flag in set_migratetype_isolate() mm/memory_hotplug.c: fix notification in offline error path ptrace: take into account saved_sigmask in PTRACE{GET,SET}SIGMASK fs/proc/kcore.c: make kcore_modules static include/linux/list.h: fix list_is_first() kernel-doc mm/debug.c: fix __dump_page when mapping->host is not set mm: mempolicy: make mbind() return -EIO when MPOL_MF_STRICT is specified include/linux/hugetlb.h: convert to use vm_fault_t iommu/io-pgtable-arm-v7s: request DMA32 memory, and improve debugging mm: add support for kmem caches in DMA32 zone ocfs2: fix inode bh swapping mixup in ocfs2_reflink_inodes_lock mm/hotplug: fix offline undo_isolate_page_range() fs/open.c: allow opening only regular files during execve() mailmap: add Changbin Du mm/debug.c: add a cast to u64 for atomic64_read() ...
2019-03-29checkpatch: add %pt as a valid vsprintf extensionAlexandre Belloni1-1/+1
Commit 4d42c44727a0 ("lib/vsprintf: Print time and date in human readable format via %pt") introduced a new extension, %pt. Add it in the list of valid extensions. Link: http://lkml.kernel.org/r/20190314203719.29130-1-alexandre.belloni@bootlin.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Cc: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-03-29kconfig/[mn]conf: handle backspace (^H) keyChangbin Du3-3/+5
Backspace is not working on some terminal emulators which do not send the key code defined by terminfo. Terminals either send '^H' (8) or '^?' (127). But currently only '^?' is handled. Let's also handle '^H' for those terminals. Signed-off-by: Changbin Du <changbin.du@gmail.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2019-03-28kbuild: modversions: Fix relative CRC byte order interpretationFredrik Noring1-1/+1
Fix commit 56067812d5b0 ("kbuild: modversions: add infrastructure for emitting relative CRCs") where CRCs are interpreted in host byte order rather than proper kernel byte order. The bug is conditional on CONFIG_MODULE_REL_CRCS. For example, when loading a BE module into a BE kernel compiled with a LE system, the error "disagrees about version of symbol module_layout" is produced. A message such as "Found checksum D7FA6856 vs module 5668FAD7" will be given with debug enabled, which indicates an obvious endian problem within __kcrctab within the kernel image. The general solution is to use the macro TO_NATIVE, as is done in similar cases throughout modpost.c. With this correction it has been verified that a BE kernel compiled with a LE system accepts BE modules. This change has also been verified with a LE kernel compiled with a LE system, in which case TO_NATIVE returns its value unmodified since the byte orders match. This is by far the common case. Fixes: 56067812d5b0 ("kbuild: modversions: add infrastructure for emitting relative CRCs") Signed-off-by: Fredrik Noring <noring@nocrew.org> Cc: stable@vger.kernel.org Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2019-03-28scripts: coccinelle: Fix description of badty.cocciMichael Stefaniuc1-1/+1
Summary was copy and pasted from array_size.cocci. Signed-off-by: Michael Stefaniuc <mstefani@mykolab.com> Acked-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2019-03-28kbuild: strip whitespace in cmd_record_mcount findstringJoe Lawrence1-5/+2
CC_FLAGS_FTRACE may contain trailing whitespace that interferes with findstring. For example, commit 6977f95e63b9 ("powerpc: avoid -mno-sched-epilog on GCC 4.9 and newer") introduced a change such that on my ppc64le box, CC_FLAGS_FTRACE="-pg -mprofile-kernel ". (Note the trailing space.) When cmd_record_mcount is now invoked, findstring fails as the ftrace flags were found at very end of _c_flags, without the trailing space. _c_flags=" ... -pg -mprofile-kernel" CC_FLAGS_FTRACE="-pg -mprofile-kernel " ^ findstring is looking for this extra space Remove the redundant whitespaces from CC_FLAGS_FTRACE in cmd_record_mcount to avoid this problem. [masahiro.yamada: This issue only happens in the released versions of GNU Make. CC_FLAGS_FTRACE will not contain the trailing space if you use the latest GNU Make, which contains commit b90fabc8d6f3 ("* NEWS: Do not insert a space during '+=' if the value is empty.") ] Suggested-by: Masahiro Yamada <yamada.masahiro@socionext.com> (refactoring) Fixes: 6977f95e63b9 ("powerpc: avoid -mno-sched-epilog on GCC 4.9 and newer"). Signed-off-by: Joe Lawrence <joe.lawrence@redhat.com> Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2019-03-28coccinelle: put_device: reduce false positivesWen Yang1-0/+1
Don't complain about a return when this function returns "&pdev->dev". Fixes: da9cfb87a44d ("coccinelle: semantic code search for missing put_device()") Reported-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Wen Yang <wen.yang99@zte.com.cn> Acked-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2019-03-17kconfig: remove stale lxdialog/.gitignoreMasahiro Yamada1-4/+0
When this .gitignore was added, lxdialog was an independent hostprogs-y. Now that all objects in lxdialog/ are directly linked to mconf, the lxdialog is no longer generated. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2019-03-17kbuild: force all architectures except um to include mandatory-yMasahiro Yamada1-0/+5
Currently, every arch/*/include/uapi/asm/Kbuild explicitly includes the common Kbuild.asm file. Factor out the duplicated include directives to scripts/Makefile.asm-generic so that no architecture would opt out of the mandatory-y mechanism. um is not forced to include mandatory-y since it is a very exceptional case which does not support UAPI. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2019-03-17kbuild: warn redundant generic-yMasahiro Yamada1-0/+6
The generic-y is redundant under the following condition: - arch has its own implementation - the same header is added to generated-y - the same header is added to mandatory-y If a redundant generic-y is found, the warning like follows is displayed: scripts/Makefile.asm-generic:20: redundant generic-y found in arch/arm/include/asm/Kbuild: timex.h I fixed up arch Kbuild files found by this. Suggested-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2019-03-17Revert "modsign: Abort modules_install when signing fails"Douglas Anderson1-1/+1
This reverts commit caf6fe91ddf62a96401e21e9b7a07227440f4185. The commit was fine but is no longer needed as of commit 3a2429e1faf4 ("kbuild: change if_changed_rule for multi-line recipe"). Let's go back to using ";" to be consistent. For some discussion, see: https://lkml.kernel.org/r/CAK7LNASde0Q9S5GKeQiWhArfER4S4wL1=R_FW8q0++_X3T5=hQ@mail.gmail.com Signed-off-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2019-03-17kbuild: deb-pkg: avoid implicit effectsArseny Maslennikov1-1/+4
* The man page for dpkg-source(1) notes: > -b, --build directory [format-specific-parameters] > Build a source package (--build since dpkg 1.17.14). > <...> > > dpkg-source will build the source package with the first > format found in this ordered list: the format indicated > with the --format command line option, the format > indicated in debian/source/format, “1.0”. The fallback > to “1.0” is deprecated and will be removed at some point > in the future, you should always document the desired > source format in debian/source/format. See section > SOURCE PACKAGE FORMATS for an extensive description of > the various source package formats. Thus it would be more foolproof to explicitly use 1.0 (as we always did) than to rely on dpkg-source's defaults. * In a similar vein, debian/rules is not made executable by mkdebian, and dpkg-source warns about that but still silently fixes the file. Let's be explicit once again. Signed-off-by: Arseny Maslennikov <ar@cs.msu.ru> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2019-03-17coccinelle: semantic code search for missing put_device()Wen Yang1-0/+56
The of_find_device_by_node() takes a reference to the underlying device structure, we should release that reference. The implementation of this semantic code search is: In a function, for a local variable returned by calling of_find_device_by_node(), a, if it is released by a function such as put_device()/of_dev_put()/platform_device_put() after the last use, it is considered that there is no reference leak; b, if it is passed back to the caller via dev_get_drvdata()/platform_get_drvdata()/get_device(), etc., the reference will be released in other functions, and the current function also considers that there is no reference leak; c, for the rest of the situation, the current function should release the reference by calling put_device, this code search will report the corresponding error message. By using this semantic code search, we have found some object reference leaks, such as: commit 11907e9d3533 ("ASoC: fsl-asoc-card: fix object reference leaks in fsl_asoc_card_probe") commit a12085d13997 ("mtd: rawnand: atmel: fix possible object reference leak") commit 11493f26856a ("mtd: rawnand: jz4780: fix possible object reference leak") There are still dozens of reference leaks in the current kernel code. Further, for the case of b, the object returned to other functions may also have a reference leak, we will continue to develop other cocci scripts to further check the reference leak. Signed-off-by: Wen Yang <wen.yang99@zte.com.cn> Reviewed-by: Julia Lawall <Julia.Lawall@lip6.fr> Reviewed-by: Markus Elfring <Markus.Elfring@web.de> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2019-03-14kbuild: pkg: grep include/config/auto.conf instead of $KCONFIG_CONFIGMasahiro Yamada3-3/+3
This will be a little more efficient since unset CONFIG options are stripped away from auto.conf, and we can hard-code the path to auto.conf since it is never overridden. include/config/kernel.release is generated before %pkg is run. So, it is guaranteed auto.conf is up-to-date. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2019-03-14kbuild: deb-pkg: introduce is_enabled and if_enabled_echo to builddebMasahiro Yamada1-13/+19
I think is_enabled() and if_enable_echo() in scripts/package/mkdebian are useful. builddeb also has many repetitive greps over the kernel config, so I borrowed the idea to clean it up. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2019-03-14kbuild: deb-pkg: add CONFIG_ prefix to kernel config optionsMasahiro Yamada1-17/+17
This might be a kind of bike-shed, but I personally prefer grep'able code. I often do 'git grep CONFIG_FOO' instead of 'git grep FOO' when I want to know where that CONFIG option is used. This makes code longer, but I hope this is acceptable level. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2019-03-14kbuild: source include/config/auto.conf instead of ${KCONFIG_CONFIG}Masahiro Yamada2-16/+2
As commit 423a8155facf ("kbuild: Fix reading of .config in link-vmlinux.sh") addressed, some shells fail to perform '.' if ${KCONFIG_CONFIG} does not contain a slash at all. Instead, we can source include/config/auto.conf, which obviously contain slashes, and we do not expect its file path overridden by a user. Perhaps, the performance might be slightly better since unset CONFIG options are stripped from include/config/auto.conf. scripts/setlocalversion already works this way. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2019-03-14kbuild: move archive command to scripts/Makefile.libMasahiro Yamada2-5/+7
scripts/Makefile.build and arch/s390/boot/Makefile use the same command (thin archiving with symbol table creation). Avoid the code duplication, and move it to scripts/Makefile.lib. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2019-03-14modpost: always show verbose warning for section mismatchMasahiro Yamada2-23/+5
Unless CONFIG_DEBUG_SECTION_MISMATCH is enabled, modpost only shows the number of section mismatches. If you want to know the symbols causing the issue, you need to rebuild with CONFIG_DEBUG_SECTION_MISMATCH. It is tedious. I think it is fine to show annoying warning when a new section mismatch comes in. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2019-03-14deb-pkg: generate correct build dependenciesRiku Voipio1-1/+3
bison/flex is now needed always for building for kconfig. Some build dependencies depend on kernel configuration, enable them as needed: - libelf-dev when UNWINDER_ORC is set - libssl-dev for SYSTEM_TRUSTED_KEYRING Since the libssl-dev is needed for extract_cert binary, denote with :native to install the libssl-dev for the build machines architecture, rather than for the architecture of the kernel being built. Tested-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org> Reviewed-by: Ben Hutchings <ben@decadent.org.uk> Acked-by: maximilian attems <maks@stro.at> [masahiro.yamada: change 'flex' to 'flex | flex:native' ] Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2019-03-13Merge tag 'kconfig-v5.1' of ↵Linus Torvalds7-14/+44
git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kconfig updates from Masahiro Yamada: - rename lexer and parse files - fix 'Save as' menu of xconfig * tag 'kconfig-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: kconfig: fix 'Save As' menu of xconfig kconfig: rename zconf.y to parser.y kconfig: rename zconf.l to lexer.l
2019-03-12kconfig: fix 'Save As' menu of xconfigMasahiro Yamada2-7/+36
The 'Save As' menu of xconfig is not working; it always saves the kernel configuration into the default file irrespective of the file chosen in the dialog box. The 'Save' menu always writes into the default file, but it would make more sense to write into the file previously chosen by 'Load' or 'Save As'. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2019-03-10Merge tag 'kbuild-v5.1' of ↵Linus Torvalds18-165/+104
git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild updates from Masahiro Yamada: - do not generate unneeded top-level built-in.a - let git ignore O= directory entirely - optimize scripts/kallsyms slightly - exclude DWARF info from *.s regardless of config options - fix GCC toolchain search path for Clang to prepare ld.lld support - do not generate modules.order when CONFIG_MODULES is disabled - simplify single target rules and remove VPATH for external module build - allow to add optional flags to dpkg-buildpackage when building deb-pkg - move some compiler option tests from Makefile to Kconfig - various Makefile cleanups * tag 'kbuild-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (40 commits) kbuild: remove scripts/basic/% build target kbuild: use -Werror=implicit-... instead of -Werror-implicit-... kbuild: clean up scripts/gcc-version.sh kbuild: remove cc-version macro kbuild: update comment block of scripts/clang-version.sh kbuild: remove commented-out INITRD_COMPRESS kbuild: move -gsplit-dwarf, -gdwarf-4 option tests to Kconfig kbuild: [bin]deb-pkg: add DPKG_FLAGS variable kbuild: move ".config not found!" message from Kconfig to Makefile kbuild: invoke syncconfig if include/config/auto.conf.cmd is missing kbuild: simplify single target rules kbuild: remove empty rules for makefiles kbuild: make -r/-R effective in top Makefile for old Make versions kbuild: move tools_silent to a more relevant place kbuild: compute false-positive -Wmaybe-uninitialized cases in Kconfig kbuild: refactor cc-cross-prefix implementation kbuild: hardcode genksyms path and remove GENKSYMS variable scripts/gdb: refactor rules for symlink creation kbuild: create symlink to vmlinux-gdb.py in scripts_gdb target scripts/gdb: do not descend into scripts/gdb from scripts ...
2019-03-10Merge tag 'platform-drivers-x86-v5.1-1' of ↵Linus Torvalds2-1/+30
git://git.infradead.org/linux-platform-drivers-x86 Pull x86 platform driver updates from Darren Hart: - use MODULE_DEVICE_TABLE across several wmi drivers, keeping wmi_device_id and MODULE_ALIAS() declarations in sync - add several Ideapad models to the no_hw_rfkill list - add support for new Mellanox platforms, including new fan and LED functionality - address Dell keyboard backlight change event and power button release issues - update dell_rbu to use appropriate memory allocation mechanisms - several small fixes and Ice Lake support for intel_pmc_core - fix a suspend regression for Cherry Trail based devices in intel_int0002_vgpio - a few other routine fixes * tag 'platform-drivers-x86-v5.1-1' of git://git.infradead.org/linux-platform-drivers-x86: (50 commits) MAINTAINERS: Include mlxreg.h in Mellanox Platform Driver files platform/x86: ideapad-laptop: Add S130-14IGM to no_hw_rfkill list platform/x86: mlx-platform: Fix access mode for fan_dir attribute platform/x86: mlx-platform: Add UID LED for the next generation systems platform/x86: mlx-platform: Add extra CPLD for next generation systems platform/x86: wmi-bmof: use MODULE_DEVICE_TABLE() instead of MODULE_ALIAS() platform/x86: intel-wmi-thunderbolt: use MODULE_DEVICE_TABLE() instead of MODULE_ALIAS() platform/x86: huawei-wmi: use MODULE_DEVICE_TABLE() instead of MODULE_ALIAS() platform/x86: dell-wmi: use MODULE_DEVICE_TABLE() instead of MODULE_ALIAS() platform/x86: dell-wmi-descriptor: use MODULE_DEVICE_TABLE() instead of MODULE_ALIAS() platform/x86: dell-smbios-wmi: use MODULE_DEVICE_TABLE() instead of MODULE_ALIAS() platform/x86: wmi: add WMI support to MODULE_DEVICE_TABLE() platform/x86: wmi: move struct wmi_device_id to mod_devicetable.h modpost: file2alias: define size of alias platform/x86: touchscreen_dmi: Add info for the CHUWI Hi10 Air tablet platform/x86: ideapad-laptop: Add Ideapad 530S-14ARR to no_hw_rfkill list platform/x86: ideapad-laptop: Add Yoga C930 to no_hw_rfkill_list platform/x86: intel_pmc_core: Quirk to ignore XTAL shutdown platform/x86: intel_pmc_core: Add Package cstates residency info platform/x86: intel_pmc_core: Add ICL platform support ...
2019-03-10Merge tag 'devicetree-for-5.1' of ↵Linus Torvalds1-1/+12
git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull Devicetree updates from Rob Herring: - Fix a unittest failure on UML. Preparation for converting to kunit test framework. - Add annotations to dtx_diff output - Fix unittest reporting of expected error - Move DMA configuration for virtual devices into the driver that needs it (s5p-mfc) - Vendor prefixes for feiyang and techstar - Convert ARM GIC, GICv3, and L2x0 to DT schema - Add r8a7778/9 HSCIF serial bindings * tag 'devicetree-for-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: of: unittest: unflatten device tree on UML when testing dt-bindings: Add vendor prefix for feiyang dt-bindings: Add vendor prefix for techstar dt-bindings: display: add missing semicolon in example of: mark early_init_dt_alloc_reserved_memory_arch static of: add dtc annotations functionality to dtx_diff of: unittest: add caution to function header comment of: unittest: remove report of expected error dt-bindings: interrupt-controller: Convert ARM GICv3 to json-schema dt-bindings: interrupt-controller: Convert ARM GIC to json-schema dt-bindings: arm: l2x0: Convert L2 cache to json-schema media: s5p-mfc: Fix memdev DMA configuration dt-bindings: serial: sh-sci: Document r8a7778/9 HSCIF bindings
2019-03-09Merge tag 'leaks-5.1-rc1' of ↵Linus Torvalds1-5/+4
git://git.kernel.org/pub/scm/linux/kernel/git/tobin/leaks Pull leaking_addresses updates from Tobin Harding: "Here are two super trivial patches to the leaking addresses script. One fixes the debugging output which is currently broken in a bunch of places, the other removes the --version command line option. Both patches have been tested and sitting in linux-next tree for a month or so" * tag 'leaks-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tobin/leaks: leaking_addresses: Completely remove --version flag leaking_addresses: Fix calls to dprint
2019-03-09Merge tag 'docs-5.1' of git://git.lwn.net/linuxLinus Torvalds3-15/+8
Pull documentation updates from Jonathan Corbet: "A fairly routine cycle for docs - lots of typo fixes, some new documents, and more translations. There's also some LICENSES adjustments from Thomas" * tag 'docs-5.1' of git://git.lwn.net/linux: (74 commits) docs: Bring some order to filesystem documentation Documentation/locking/lockdep: Drop last two chars of sample states doc: rcu: Suspicious RCU usage is a warning docs: driver-api: iio: fix errors in documentation Documentation/process/howto: Update for 4.x -> 5.x versioning docs: Explicitly state that the 'Fixes:' tag shouldn't split lines doc: security: Add kern-doc for lsm_hooks.h doc: sctp: Merge and clean up rst files Docs: Correct /proc/stat path scripts/spdxcheck.py: fix C++ comment style detection doc: fix typos in license-rules.rst Documentation: fix admin-guide/README.rst minimum gcc version requirement doc: process: complete removal of info about -git patches doc: translations: sync translations 'remove info about -git patches' perf-security: wrap paragraphs on 72 columns perf-security: elaborate on perf_events/Perf privileged users perf-security: document collected perf_events/Perf data categories perf-security: document perf_events/Perf resource control sysfs.txt: add note on available attribute macros docs: kernel-doc: typo "if ... if" -> "if ... is" ...
2019-03-09Merge tag 'gcc-plugins-v5.1-rc1' of ↵Linus Torvalds3-22/+74
git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull gcc-plugins updates from Kees Cook: "This adds additional type coverage to the existing structleak plugin and adds a large set of selftests to help evaluate stack variable zero-initialization coverage. That can be used to test whatever instrumentation might be performing zero-initialization: either with the structleak plugin or with Clang's coming "-ftrivial-auto-var-init=zero" option. Summary: - Add scalar and array initialization coverage - Refactor Kconfig to make options more clear - Add self-test module for testing automatic initialization" * tag 'gcc-plugins-v5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: lib: Introduce test_stackinit module gcc-plugins: structleak: Generalize to all variable types
2019-03-07scripts/gdb: replace flags (MS_xyz -> SB_xyz)Jackie Liu2-12/+12
Since commit 1751e8a6cb93 ("Rename superblock flags (MS_xyz -> SB_xyz)"), scripts/gdb should be updated to replace MS_xyz with SB_xyz. This change didn't directly affect the running operation of scripts/gdb until commit e262e32d6bde "vfs: Suppress MS_* flag defs within the kernel unless explicitly enabled" removed the definitions used by constants.py. Update constants.py.in to utilise the new internal flags, matching the implementation at fs/proc_namespace.c::show_sb_opts. Note to stable, e262e32d6bde landed in v5.0-rc1 (which was just released), so we'll want this picked back to 5.0 stable once this patch hits mainline (akpm just picked it up). Without this, debugging a kernel a kernel via GDB+QEMU is broken in the 5.0 release. [kieran.bingham@ideasonboard.com: add fixes tag, reword commit message] Link: http://lkml.kernel.org/r/20190305103014.25847-1-kieran.bingham@ideasonboard.com Fixes: e262e32d6bde "vfs: Suppress MS_* flag defs within the kernel unless explicitly enabled" Signed-off-by: Jackie Liu <liuyun01@kylinos.cn> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Tested-by: Nick Desaulniers <ndesaulniers@google.com> Tested-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Cc: Felipe Balbi <felipe.balbi@linux.intel.com> Cc: Dan Robertson <danlrobertson89@gmail.com> Cc: Jan Kiszka <jan.kiszka@siemens.com> Cc: David Howells <dhowells@redhat.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-03-07checkpatch: add test for SPDX-License-Identifier on wrong line #Joe Perches1-0/+8
Warn when any SPDX-License-Identifier: tag is not created on the proper line number. Link: http://lkml.kernel.org/r/9b74ee87f8c1b8fd310e213fcb4994d58610fcb6.camel@perches.com Signed-off-by: Joe Perches <joe@perches.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: "Enrico Weigelt, metux IT consult" <lkml@metux.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-03-07checkpatch: allow reporting C99 style commentsVadim Bendebury1-1/+2
Presently C99 style comments are removed unconditionally before actual patch validity check happens. This is a problem for some third party projects which use checkpatch.pl but do not allow C99 style comments. This patch adds yet another variable, named C99_COMMENT_TOLERANCE. If it is included in the --ignore command line or config file options list, C99 comments in the patch are reported as errors. Tested by processing a patch with a C99 style comment, it passes the check just fine unless '--ignore C99_COMMENT_TOLERANCE' is present in .checkpatch.conf. Link: http://lkml.kernel.org/r/20190110224957.25008-1-vbendeb@chromium.org Signed-off-by: Vadim Bendebury <vbendeb@chromium.org> Cc: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-03-07checkpatch: add some new alloc functions to various testsJoe Perches1-4/+15
Many new generic allocation functions like the kvmalloc family have been added recently to the kernel. The allocation functions test now includes: o kvmalloc and variants o kstrdup_const o kmemdup_nul o dma_alloc_coherent o alloc_skb and variants Add a separate $allocFunctions variable to help make the allocation functions test a bit more readable. Miscellanea: o Use $allocFunctions in the unnecessary OOM message test and add exclude uses with __GFP_NOWARN o Use $allocFunctions in the unnecessary cast test o Add the kvmalloc family to the preferred sizeof alloc style foo = kvmalloc(sizeof(*foo), ...) Link: http://lkml.kernel.org/r/a5e60a2b93e10baf84af063f6c8e56402273105d.camel@perches.com Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-03-07checkpatch: verify SPDX comment styleJoe Perches1-0/+8
Using SPDX commenting style // or /* is specified for various file types in Documentation/process/license-rules.rst so add an appropriate test for .[chsS] files because many proposed file additions and patches do not use the correct style. Link: http://lkml.kernel.org/r/8b02899853247a2c67669561761f354dd3bd110e.camel@perches.com Signed-off-by: Joe Perches <joe@perches.com> Cc: Rob Herring <robh@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-03-07scripts/spelling.txt: add more spellings to spelling.txtColin Ian King1-0/+69
Here are some of the more common spelling mistakes and typos that I've found while fixing up spelling mistakes in the kernel over the past 4 months. Link: http://lkml.kernel.org/r/20190114110215.1986-1-colin.king@canonical.com Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-03-07platform/x86: wmi: add WMI support to MODULE_DEVICE_TABLE()Mattias Jacobsson2-0/+25
The kernel provides the macro MODULE_DEVICE_TABLE() where driver authors can specify their device type and their array of device_ids and thereby trigger the generation of the appropriate MODULE_ALIAS() output. This is opposed to having to specify one MODULE_ALIAS() for each device. The WMI device type is currently not supported. While using MODULE_DEVICE_TABLE() does increase the complexity as well as spreading out the implementation across the kernel, it does come with some benefits too; * It makes different drivers look more similar; if you can specify the array of device_ids any device type specific input to MODULE_ALIAS() will automatically be generated for you. * It helps each driver avoid keeping multiple versions of the same information in sync. That is, both the array of device_ids and the potential multitude of MODULE_ALIAS()'s. Add WMI support to MODULE_DEVICE_TABLE() by adding info about struct wmi_device_id in devicetable-offsets.c and add a WMI entry point in file2alias.c. The type argument for MODULE_DEVICE_TABLE(type, name) is wmi. Suggested-by: Pali Rohár <pali.rohar@gmail.com> Signed-off-by: Mattias Jacobsson <2pi@mok.nu> Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
2019-03-07platform/x86: wmi: move struct wmi_device_id to mod_devicetable.hMattias Jacobsson1-0/+1
In preparation for adding WMI support to MODULE_DEVICE_TABLE() move the definition of struct wmi_device_id to mod_devicetable.h and inline guid_string in the struct. Changing guid_string to an inline char array changes the loop conditions when looping over an array of struct wmi_device_id. Therefore update wmi_dev_match()'s loop to check for an empty guid_string instead of a NULL pointer. Signed-off-by: Mattias Jacobsson <2pi@mok.nu> [dvhart: Move UUID_STRING_LEN define to this patch] Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
2019-03-06modpost: file2alias: define size of aliasMattias Jacobsson1-1/+4
The size of the variable alias provided to do_entry functions are currently not readily available. Thus hindering do_entry functions to perform bounds checking. Define the macro ALIAS_SIZE containing the size of the variable alias. Signed-off-by: Mattias Jacobsson <2pi@mok.nu> Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
2019-03-06Merge tag 'char-misc-5.1-rc1' of ↵Linus Torvalds1-2/+4
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc driver updates from Greg KH: "Here is the big char/misc driver patch pull request for 5.1-rc1. The largest thing by far is the new habanalabs driver for their AI accelerator chip. For now it is in the drivers/misc directory but will probably move to a new directory soon along with other drivers of this type. Other than that, just the usual set of individual driver updates and fixes. There's an "odd" merge in here from the DRM tree that they asked me to do as the MEI driver is starting to interact with the i915 driver, and it needed some coordination. All of those patches have been properly acked by the relevant subsystem maintainers. All of these have been in linux-next with no reported issues, most for quite some time" * tag 'char-misc-5.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (219 commits) habanalabs: adjust Kconfig to fix build errors habanalabs: use %px instead of %p in error print habanalabs: use do_div for 64-bit divisions intel_th: gth: Fix an off-by-one in output unassigning habanalabs: fix little-endian<->cpu conversion warnings habanalabs: use NULL to initialize array of pointers habanalabs: fix little-endian<->cpu conversion warnings habanalabs: soft-reset device if context-switch fails habanalabs: print pointer using %p habanalabs: fix memory leak with CBs with unaligned size habanalabs: return correct error code on MMU mapping failure habanalabs: add comments in uapi/misc/habanalabs.h habanalabs: extend QMAN0 job timeout habanalabs: set DMA0 completion to SOB 1007 habanalabs: fix validation of WREG32 to DMA completion habanalabs: fix mmu cache registers init habanalabs: disable CPU access on timeouts habanalabs: add MMU DRAM default page mapping habanalabs: Dissociate RAZWI info from event types misc/habanalabs: adjust Kconfig to fix build errors ...
2019-03-07leaking_addresses: Completely remove --version flagTobin C. Harding1-2/+1
Recently attempt to remove the '--version' flag was made, badly. We failed to remove mention of it from the help output. And we (me) failed to actually remove the flag from the options list. _Completely_ remove --version flag.
2019-03-07leaking_addresses: Fix calls to dprintTobin C. Harding1-3/+3
Currently calls to function dprint() are non uniform and at times incorrect. Use uniform _correct_ call to function dprint(). Signed-off-by: Tobin C. Harding <tobin@kernel.org>
2019-03-06Merge branch 'akpm' (patches from Andrew)Linus Torvalds3-10/+8
Merge misc updates from Andrew Morton: - a few misc things - ocfs2 updates - most of MM * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (159 commits) tools/testing/selftests/proc/proc-self-syscall.c: remove duplicate include proc: more robust bulk read test proc: test /proc/*/maps, smaps, smaps_rollup, statm proc: use seq_puts() everywhere proc: read kernel cpu stat pointer once proc: remove unused argument in proc_pid_lookup() fs/proc/thread_self.c: code cleanup for proc_setup_thread_self() fs/proc/self.c: code cleanup for proc_setup_self() proc: return exit code 4 for skipped tests mm,mremap: bail out earlier in mremap_to under map pressure mm/sparse: fix a bad comparison mm/memory.c: do_fault: avoid usage of stale vm_area_struct writeback: fix inode cgroup switching comment mm/huge_memory.c: fix "orig_pud" set but not used mm/hotplug: fix an imbalance with DEBUG_PAGEALLOC mm/memcontrol.c: fix bad line in comment mm/cma.c: cma_declare_contiguous: correct err handling mm/page_ext.c: fix an imbalance with kmemleak mm/compaction: pass pgdat to too_many_isolated() instead of zone mm: remove zone_lru_lock() function, access ->lru_lock directly ...
2019-03-06Merge tag 'armsoc-drivers' of ↵Linus Torvalds2-0/+22
git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc Pull ARM SoC driver updates from Arnd Bergmann: "As usual, the drivers/tee and drivers/reset subsystems get merged here, with the expected set of smaller updates and some new hardware support. The tee subsystem now supports device drivers to be attached to a tee, the first example here is a random number driver with its implementation in the secure world. Three new power domain drivers get added for specific chip families: - Broadcom BCM283x chips (used in Raspberry Pi) - Qualcomm Snapdragon phone chips - Xilinx ZynqMP FPGA SoCs One new driver is added to talk to the BPMP firmware on NVIDIA Tegra210 Existing drivers are extended for new SoC variants from NXP, NVIDIA, Amlogic and Qualcomm" * tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (113 commits) tee: optee: update optee_msg.h and optee_smc.h to dual license tee: add cancellation support to client interface dpaa2-eth: configure the cache stashing amount on a queue soc: fsl: dpio: configure cache stashing destination soc: fsl: dpio: enable frame data cache stashing per software portal soc: fsl: guts: make fsl_guts_get_svr() static hwrng: make symbol 'optee_rng_id_table' static tee: optee: Fix unsigned comparison with less than zero hwrng: Fix unsigned comparison with less than zero tee: fix possible error pointer ctx dereferencing hwrng: optee: Initialize some structs using memset instead of braces tee: optee: Initialize some structs using memset instead of braces soc: fsl: dpio: fix memory leak of a struct qbman on error exit path clk: tegra: dfll: Make symbol 'tegra210_cpu_cvb_tables' static soc: qcom: llcc-slice: Fix typos qcom: soc: llcc-slice: Consolidate some code qcom: soc: llcc-slice: Clear the global drv_data pointer on error drivers: soc: xilinx: Add ZynqMP power domain driver firmware: xilinx: Add APIs to control node status/power dt-bindings: power: Add ZynqMP power domain bindings ...
2019-03-06Merge branch 'locking-core-for-linus' of ↵Linus Torvalds26-0/+976
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull locking updates from Ingo Molnar: "The biggest part of this tree is the new auto-generated atomics API wrappers by Mark Rutland. The primary motivation was to allow instrumentation without uglifying the primary source code. The linecount increase comes from adding the auto-generated files to the Git space as well: include/asm-generic/atomic-instrumented.h | 1689 ++++++++++++++++-- include/asm-generic/atomic-long.h | 1174 ++++++++++--- include/linux/atomic-fallback.h | 2295 +++++++++++++++++++++++++ include/linux/atomic.h | 1241 +------------ I preferred this approach, so that the full call stack of the (already complex) locking APIs is still fully visible in 'git grep'. But if this is excessive we could certainly hide them. There's a separate build-time mechanism to determine whether the headers are out of date (they should never be stale if we do our job right). Anyway, nothing from this should be visible to regular kernel developers. Other changes: - Add support for dynamic keys, which removes a source of false positives in the workqueue code, among other things (Bart Van Assche) - Updates to tools/memory-model (Andrea Parri, Paul E. McKenney) - qspinlock, wake_q and lockdep micro-optimizations (Waiman Long) - misc other updates and enhancements" * 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (48 commits) locking/lockdep: Shrink struct lock_class_key locking/lockdep: Add module_param to enable consistency checks lockdep/lib/tests: Test dynamic key registration lockdep/lib/tests: Fix run_tests.sh kernel/workqueue: Use dynamic lockdep keys for workqueues locking/lockdep: Add support for dynamic keys locking/lockdep: Verify whether lock objects are small enough to be used as class keys locking/lockdep: Check data structure consistency locking/lockdep: Reuse lock chains that have been freed locking/lockdep: Fix a comment in add_chain_cache() locking/lockdep: Introduce lockdep_next_lockchain() and lock_chain_count() locking/lockdep: Reuse list entries that are no longer in use locking/lockdep: Free lock classes that are no longer in use locking/lockdep: Update two outdated comments locking/lockdep: Make it easy to detect whether or not inside a selftest locking/lockdep: Split lockdep_free_key_range() and lockdep_reset_lock() locking/lockdep: Initialize the locks_before and locks_after lists earlier locking/lockdep: Make zap_class() remove all matching lock order entries locking/lockdep: Reorder struct lock_class members locking/lockdep: Avoid that add_chain_cache() adds an invalid chain to the cache ...