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2018-06-08netfilter: remove include/net/netfilter/nft_dup.hCorentin Labbe
include/net/netfilter/nft_dup.h was introduced in d877f07112f1 ("netfilter: nf_tables: add nft_dup expression") but was never user since this date. Furthermore, the only struct in this file is unused elsewhere. Signed-off-by: Corentin Labbe <clabbe@baylibre.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2018-06-08netfilter: x_tables: initialise match/target check parameter structFlorian Westphal
syzbot reports following splat: BUG: KMSAN: uninit-value in ebt_stp_mt_check+0x24b/0x450 net/bridge/netfilter/ebt_stp.c:162 ebt_stp_mt_check+0x24b/0x450 net/bridge/netfilter/ebt_stp.c:162 xt_check_match+0x1438/0x1650 net/netfilter/x_tables.c:506 ebt_check_match net/bridge/netfilter/ebtables.c:372 [inline] ebt_check_entry net/bridge/netfilter/ebtables.c:702 [inline] The uninitialised access is xt_mtchk_param->nft_compat ... which should be set to 0. Fix it by zeroing the struct beforehand, same for tgchk. ip(6)tables targetinfo uses c99-style initialiser, so no change needed there. Reported-by: syzbot+da4494182233c23a5fcf@syzkaller.appspotmail.com Fixes: 55917a21d0cc0 ("netfilter: x_tables: add context to know if extension runs from nft_compat") Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2018-06-08gcov: remove CONFIG_GCOV_FORMAT_AUTODETECTMasahiro Yamada
CONFIG_GCOV_FORMAT_AUTODETECT compiles either gcc_3_4.c or gcc_4_7.c according to your GCC version. We can achieve the equivalent behavior by setting reasonable dependency with the knowledge of the compiler version. If GCC older than 4.7 is used, GCOV_FORMAT_3_4 is the default, but users are still allowed to select GCOV_FORMAT_4_7 in case the newer format is back-ported. On the other hand, If GCC 4.7 or newer is used, there is no reason to use GCOV_FORMAT_3_4, so it should be hidden. If you downgrade the compiler to GCC 4.7 or older, oldconfig/syncconfig will display a prompt for the choice because GCOV_FORMAT_3_4 becomes visible as a new symbol. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com> Reviewed-by: Kees Cook <keescook@chromium.org>
2018-06-08arm64: move GCC version check for ARCH_SUPPORTS_INT128 to KconfigMasahiro Yamada
This becomes much neater in Kconfig. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Will Deacon <will.deacon@arm.com> Reviewed-by: Kees Cook <keescook@chromium.org>
2018-06-08kconfig: add CC_IS_CLANG and CLANG_VERSIONMasahiro Yamada
This will be useful to describe the clang version dependency. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Kees Cook <keescook@chromium.org>
2018-06-08kconfig: add CC_IS_GCC and GCC_VERSIONMasahiro Yamada
This will be useful to specify the required compiler version, like this: config FOO bool "Use Foo" depends on GCC_VERSION >= 40800 help This feature requires GCC 4.8 or newer. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Kees Cook <keescook@chromium.org>
2018-06-08stack-protector: test compiler capability in Kconfig and drop AUTO modeMasahiro Yamada
Move the test for -fstack-protector(-strong) option to Kconfig. If the compiler does not support the option, the corresponding menu is automatically hidden. If STRONG is not supported, it will fall back to REGULAR. If REGULAR is not supported, it will be disabled. This means, AUTO is implicitly handled by the dependency solver of Kconfig, hence removed. I also turned the 'choice' into only two boolean symbols. The use of 'choice' is not a good idea here, because all of all{yes,mod,no}config would choose the first visible value, while we want allnoconfig to disable as many features as possible. X86 has additional shell scripts in case the compiler supports those options, but generates broken code. I added CC_HAS_SANE_STACKPROTECTOR to test this. I had to add -m32 to gcc-x86_32-has-stack-protector.sh to make it work correctly. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Kees Cook <keescook@chromium.org>
2018-06-08kbuild: fix endless syncconfig in case arch Makefile sets CROSS_COMPILEMasahiro Yamada
Commit 21c54b774744 ("kconfig: show compiler version text in the top comment") was intended to detect the compiler upgrade, but Geert reported a breakage on the m68k build. The compiler upgrade is detected by the change of the environment variable, CC_VERSION_TEXT, which contains the first line of the output from $(CC) --version. Currently, this works well when CROSS_COMPILE is given via the environment variable or the Make command line. However, some architectures such as m68k can specify CROSS_COMPILE from arch/$(SRCARCH)/Makefile as well. In this case, "make ARCH=m68k" ends up with endless syncconfig loop. $ make ARCH=m68k defconfig *** Default configuration is based on 'multi_defconfig' # # configuration written to .config # $ make ARCH=m68k scripts/kconfig/conf --syncconfig Kconfig scripts/kconfig/conf --syncconfig Kconfig scripts/kconfig/conf --syncconfig Kconfig scripts/kconfig/conf --syncconfig Kconfig Things are happening like this: Because arch/$(SRCARCH)/Makefile is included after CC_VERSION_TEXT is set, it contains the host compiler version in the defconfig phase. To create or update auto.conf, the following line is triggered: include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd $(Q)$(MAKE) -f $(srctree)/Makefile syncconfig This recurses the top Makefile after arch/$(SRCARCH)/Makefile is included. CROSS_COMPILE is set to a m68k toolchain prefix and exported to the recursed Make. Then, syncconfig is invoked with the target compiler version in CC_VERSION_TEXT. The Make will restart because auto.conf and auto.conf.cmd have been updated. At this point, CROSS_COMPILE is reset, so CC_VERSION_TEXT is set to the host compiler version again. Then, syncconfig is triggered due to the change of CC_VERSION_TEXT. This loop continues eternally. To fix this problem, $(CC_VERSION_TEXT) must be evaluated only after arch/$(SRCARCH)/Makefile. Setting it earlier is OK as long as it is defined by using the '=' operator instead of ':='. For the defconfig phase, $(CC_VERSION_TEXT) is evaluated when Kbuild descends into scripts/kconfig/, so it contains the target compiler version correctly. include/config/auto.conf.cmd references $(CC_VERSION_TEXT) as well, so it must be included after arch/$(SRCARCH)/Makefile. Fixes: 21c54b774744 ("kconfig: show compiler version text in the top comment") Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Tested-by: Geert Uytterhoeven <geert@linux-m68k.org>
2018-06-08cpufreq: governors: Fix long idle detection logic in load calculationChen Yu
According to current code implementation, detecting the long idle period is done by checking if the interval between two adjacent utilization update handlers is long enough. Although this mechanism can detect if the idle period is long enough (no utilization hooks invoked during idle period), it might not cover a corner case: if the task has occupied the CPU for too long which causes no context switches during that period, then no utilization handler will be launched until this high prio task is scheduled out. As a result, the idle_periods field might be calculated incorrectly because it regards the 100% load as 0% and makes the conservative governor who uses this field confusing. Change the detection to compare the idle_time with sampling_rate directly. Reported-by: Artem S. Tashkinov <t.artem@mailcity.com> Signed-off-by: Chen Yu <yu.c.chen@intel.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Cc: All applicable <stable@vger.kernel.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-06-08cpufreq: intel_pstate: enable boost for Skylake XeonSrinivas Pandruvada
Enable HWP boost on Skylake server and workstations. Reported-by: Mel Gorman <mgorman@techsingularity.net> Tested-by: Giovanni Gherdovich <ggherdovich@suse.cz> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-06-08Merge branch 'for-4.18/wacom' into for-linusJiri Kosina
Support for "In Range" flag for Wacom Intuos/Bamboo devices from Jason Gerecke
2018-06-08Merge branch 'for-4.18/upstream' into for-linusJiri Kosina
2018-06-08Merge branch 'for-4.18/rmi' into for-linusJiri Kosina
RMI4 correct split report handling from Benjamin Tissoires
2018-06-08Merge branch 'for-4.18/plantronics' into for-linusJiri Kosina
2018-06-08Merge branch 'for-4.18/multitouch' into for-linusJiri Kosina
- improvement of duplicate usage handling in hid-input from Benjamin Tissoires - Win 8.1 precisioun touchpad spec implementation from Benjamin Tissoires
2018-06-08Merge branch 'for-4.18/i2c-hid' into for-linusJiri Kosina
Assorted smaller fixes to i2c-hid driver
2018-06-08Merge branch 'for-4.18/hid-steam' into for-linusJiri Kosina
Valve Steam Controller support from Rodrigo Rivas Costa
2018-06-08Merge branch 'for-4.18/hid-redragon' into for-linusJiri Kosina
Redragon Asura support from Robert Munteanu
2018-06-08Merge branch 'for-4.18/alps' into for-linusJiri Kosina
hid-alps driver cleanups wrt. t4_read_write_register() handling from Christophe Jaillet
2018-06-08Merge tag 'drm-misc-next-fixes-2018-05-31' of ↵Dave Airlie
git://anongit.freedesktop.org/drm/drm-misc into drm-next drm-misc-next-fixes for v4.18: Driver changes: - Plug small memory leak in vc4. (anholt) - Depend on MMU in v3d. (arnd) Signed-off-by: Dave Airlie <airlied@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/12faab25-e809-e73c-409c-5e9c08aa351c@linux.intel.com
2018-06-08Merge tag 'drm-msm-next-2018-06-04' of ↵Dave Airlie
git://people.freedesktop.org/~robclark/linux into drm-next A bunch of msm fixes and some atomic work. Signed-off-by: Dave Airlie <airlied@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/CAF6AEGvXe157nd70=GPjre=HjiAH91tGM50+XtM59b2MEChvXQ@mail.gmail.com
2018-06-08fix proc_fill_cache() in case of d_alloc_parallel() failureAl Viro
If d_alloc_parallel() returns ERR_PTR(...), we don't want to dput() that. Small reorganization allows to have all error-in-lookup cases rejoin the main codepath after dput(child), avoiding the entire problem. Spotted-by: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> Fixes: 0168b9e38c42 "procfs: switch instantiate_t to d_splice_alias()" Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2018-06-07cifs: fix a buffer leak in smb2_query_symlinkRonnie Sahlberg
This leak was introduced in 91cb74f5142c14dd921ab2d064b7b128054f9fae and caused us to leak one small buffer for every symlink query. Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2018-06-07scsi: qla2xxx: Mask off Scope bits in retry delayAnil Gurumurthy
Some newer target uses "Status Qualifier" response in a returned "Busy Status". This new response code of 0x4001, which is "Scope" bits, translates to "Affects all units accessible by target". Due to this new value returned in the Scope bits, driver was using that value as timeout value which resulted into driver waiting for 27min timeout. This patch masks off this Scope bits so that driver does not use this value as retry delay time. Cc: <stable@vger.kernel.org> Signed-off-by: Anil Gurumurthy <anil.gurumurthy@cavium.com> Signed-off-by: Giridhar Malavali <giridhar.malavali@cavium.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Reviewed-by: Ewan D. Milne <emilne@redhat.com> Reviewed-by: Martin Wilck <mwilck@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-06-07scsi: qla2xxx: Fix crash on qla2x00_mailbox_commandRodrigo R. Galvao
This patch fixes a crash on qla2x00_mailbox_command caused when the driver is on UNLOADING state and tries to call qla2x00_poll, which triggers a NULL pointer dereference. Signed-off-by: Rodrigo R. Galvao <rosattig@linux.vnet.ibm.com> Signed-off-by: Mauro S. M. Rodrigues <maurosr@linux.vnet.ibm.com> Acked-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-06-07scsi: aic7xxx: aic79xx: fix potential null pointer dereference on ahdColin Ian King
If AHD_DEBUG is enabled and ahd_platform_alloc fails then ahd is set to null and the debug printk dereferences ahd when passing it to ahd_name. Fix this by moving the debug printk to before the call to ahd_platform_alloc where ahd is not null at that point. Detected by CoverityScan, CID#100296 ("Explicit null dereference") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-06-07Merge branch 'akpm' (patches from Andrew)Linus Torvalds
Merge updates from Andrew Morton: - a few misc things - ocfs2 updates - v9fs updates - MM - procfs updates - lib/ updates - autofs updates * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (118 commits) autofs: small cleanup in autofs_getpath() autofs: clean up includes autofs: comment on selinux changes needed for module autoload autofs: update MAINTAINERS entry for autofs autofs: use autofs instead of autofs4 in documentation autofs: rename autofs documentation files autofs: create autofs Kconfig and Makefile autofs: delete fs/autofs4 source files autofs: update fs/autofs4/Makefile autofs: update fs/autofs4/Kconfig autofs: copy autofs4 to autofs autofs4: use autofs instead of autofs4 everywhere autofs4: merge auto_fs.h and auto_fs4.h fs/binfmt_misc.c: do not allow offset overflow checkpatch: improve patch recognition lib/ucs2_string.c: add MODULE_LICENSE() lib/mpi: headers cleanup lib/percpu_ida.c: use _irqsave() instead of local_irq_save() + spin_lock lib/idr.c: remove simple_ida_lock lib/bitmap.c: micro-optimization for __bitmap_complement() ...
2018-06-07autofs: small cleanup in autofs_getpath()Dan Carpenter
We don't set "*name" so it's slightly nicer to just pass "name" instead of "&name". Link: http://lkml.kernel.org/r/20180531064736.lnisb55eajwjynvk@kili.mountain Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: "Eric W. Biederman" <ebiederm@xmission.com> Acked-by: Ian Kent <raven@themaw.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-06-07autofs: clean up includesIan Kent
Remove includes that aren't needed from autofs (and fs/compat_ioctl.c). Link: http://lkml.kernel.org/r/152635085258.5968.9743527195522188148.stgit@pluto.themaw.net Signed-off-by: Ian Kent <raven@themaw.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-06-07autofs: comment on selinux changes needed for module autoloadIan Kent
Due to the autofs4 module using a file system type name of autofs different from the module containing directory name autoload did not function properly. To work around this kernel configurations have often elected to build the module into the kernel. This can result in selinux policies that prohibit autoloading of the autofs module which need to be changed. Add a comment about this to "possible changes" section of the autofs4 module help. Link: http://lkml.kernel.org/r/152686474171.6155.1239659539983577463.stgit@pluto.themaw.net Signed-off-by: Ian Kent <raven@themaw.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-06-07autofs: update MAINTAINERS entry for autofsIan Kent
Update the autofs entry in MAINTAINERS to reflect the rename of autofs4 to autofs. Link: http://lkml.kernel.org/r/152626709611.28589.456596640024354223.stgit@pluto.themaw.net Signed-off-by: Ian Kent <raven@themaw.net> Cc: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-06-07autofs: use autofs instead of autofs4 in documentationIan Kent
Finally remove autofs4 references in the filesystems documentation. Link: http://lkml.kernel.org/r/152626709055.28589.416082809460051475.stgit@pluto.themaw.net Signed-off-by: Ian Kent <raven@themaw.net> Cc: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-06-07autofs: rename autofs documentation filesIan Kent
There are two files in Documentation/filsystems that should now use autofs rather than autofs4 in their names. Link: http://lkml.kernel.org/r/152626707957.28589.3325300375892913999.stgit@pluto.themaw.net Signed-off-by: Ian Kent <raven@themaw.net> Cc: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-06-07autofs: create autofs Kconfig and MakefileIan Kent
Create Makefile and Kconfig for autofs module. [raven@themaw.net: make autofs4 Kconfig depend on AUTOFS_FS] Link: http://lkml.kernel.org/r/152687649097.8263.7046086367407522029.stgit@pluto.themaw.net Link: http://lkml.kernel.org/r/152626705591.28589.356365986974038383.stgit@pluto.themaw.net Signed-off-by: Ian Kent <raven@themaw.net> Tested-by: Randy Dunlap <rdunlap@infradead.org> Cc: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-06-07autofs: delete fs/autofs4 source filesIan Kent
Delete the now unused autofs4 module files. Link: http://lkml.kernel.org/r/152626707391.28589.3553309771262313504.stgit@pluto.themaw.net Signed-off-by: Ian Kent <raven@themaw.net> Cc: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-06-07autofs: update fs/autofs4/MakefileIan Kent
Update Makefile to build from source in fs/autofs instead of fs/autofs4. Link: http://lkml.kernel.org/r/152626706824.28589.1915028175544560855.stgit@pluto.themaw.net Signed-off-by: Ian Kent <raven@themaw.net> Cc: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-06-07autofs: update fs/autofs4/KconfigIan Kent
Update Kconfig and add a depricated warning. [raven@themaw.net: make autofs4 Kconfig depend on AUTOFS_FS] Link: http://lkml.kernel.org/r/152687649097.8263.7046086367407522029.stgit@pluto.themaw.net Link: http://lkml.kernel.org/r/152626706133.28589.11994171621899212952.stgit@pluto.themaw.net Signed-off-by: Ian Kent <raven@themaw.net> Tested-by: Randy Dunlap <rdunlap@infradead.org> Cc: Al Viro <viro@ZenIV.linux.org.uk> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-06-07autofs: copy autofs4 to autofsIan Kent
Copy source files from the autofs4 directory to the autofs directory. Link: http://lkml.kernel.org/r/152626705013.28589.931913083997578251.stgit@pluto.themaw.net Signed-off-by: Ian Kent <raven@themaw.net> Cc: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-06-07autofs4: use autofs instead of autofs4 everywhereIan Kent
Update naming within autofs source to be consistent by changing occurrences of autofs4 to autofs. Link: http://lkml.kernel.org/r/152626703688.28589.8315406711135226803.stgit@pluto.themaw.net Signed-off-by: Ian Kent <raven@themaw.net> Cc: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-06-07autofs4: merge auto_fs.h and auto_fs4.hIan Kent
The autofs module has long since been removed so there's no need to have two separate include files for autofs. Link: http://lkml.kernel.org/r/152626703024.28589.9571964661718767929.stgit@pluto.themaw.net Signed-off-by: Ian Kent <raven@themaw.net> Cc: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-06-07fs/binfmt_misc.c: do not allow offset overflowThadeu Lima de Souza Cascardo
WHen registering a new binfmt_misc handler, it is possible to overflow the offset to get a negative value, which might crash the system, or possibly leak kernel data. Here is a crash log when 2500000000 was used as an offset: BUG: unable to handle kernel paging request at ffff989cfd6edca0 IP: load_misc_binary+0x22b/0x470 [binfmt_misc] PGD 1ef3e067 P4D 1ef3e067 PUD 0 Oops: 0000 [#1] SMP NOPTI Modules linked in: binfmt_misc kvm_intel ppdev kvm irqbypass joydev input_leds serio_raw mac_hid parport_pc qemu_fw_cfg parpy CPU: 0 PID: 2499 Comm: bash Not tainted 4.15.0-22-generic #24-Ubuntu Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.11.1-1 04/01/2014 RIP: 0010:load_misc_binary+0x22b/0x470 [binfmt_misc] Call Trace: search_binary_handler+0x97/0x1d0 do_execveat_common.isra.34+0x667/0x810 SyS_execve+0x31/0x40 do_syscall_64+0x73/0x130 entry_SYSCALL_64_after_hwframe+0x3d/0xa2 Use kstrtoint instead of simple_strtoul. It will work as the code already set the delimiter byte to '\0' and we only do it when the field is not empty. Tested with offsets -1, 2500000000, UINT_MAX and INT_MAX. Also tested with examples documented at Documentation/admin-guide/binfmt-misc.rst and other registrations from packages on Ubuntu. Link: http://lkml.kernel.org/r/20180529135648.14254-1-cascardo@canonical.com Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-06-07checkpatch: improve patch recognitionJoe Perches
There are mode change and rename only patches that are unrecognized by checkpatch. Recognize them. [joe@perches.com: fix missing close parenthesis] Link: http://lkml.kernel.org/r/af44c893f6973393f2a5b11f1a8e5cd4c8bbbba5.camel@perches.com Link: http://lkml.kernel.org/r/974a407e6fa18abd5a965da39cc68986a4c4f091.1526949367.git.joe@perches.com Signed-off-by: Joe Perches <joe@perches.com> Reported-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-06-07lib/ucs2_string.c: add MODULE_LICENSE()Randy Dunlap
Fix missing MODULE_LICENSE() warning in lib/ucs2_string.c: WARNING: modpost: missing MODULE_LICENSE() in lib/ucs2_string.o see include/linux/module.h for more information Link: http://lkml.kernel.org/r/b2505bb4-dcf5-fc46-443d-e47db1cb2f59@infradead.org Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Matthew Garrett <matthew.garrett@nebula.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-06-07lib/mpi: headers cleanupVasily Averin
MPI headers contain definitions for huge number of non-existing functions. Most part of these functions was removed in 2012 by Dmitry Kasatkin - 7cf4206a99d1 ("Remove unused code from MPI library") - 9e235dcaf4f6 ("Revert "crypto: GnuPG based MPI lib - additional ...") - bc95eeadf5c6 ("lib/mpi: removed unused functions") however headers wwere not updated properly. Also I deleted some unused macros. Link: http://lkml.kernel.org/r/fb2fc1ef-1185-f0a3-d8d0-173d2f97bbaf@virtuozzo.com Signed-off-by: Vasily Averin <vvs@virtuozzo.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Dmitry Kasatkin <dmitry.kasatkin@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-06-07lib/percpu_ida.c: use _irqsave() instead of local_irq_save() + spin_lockSebastian Andrzej Siewior
percpu_ida() decouples disabling interrupts from the locking operations. This breaks some assumptions if the locking operations are replaced like they are under -RT. The same locking can be achieved by avoiding local_irq_save() and using spin_lock_irqsave() instead. percpu_ida_alloc() gains one more preemption point because after unlocking the fastpath and before the pool lock is acquired, the interrupts are briefly enabled. Link: http://lkml.kernel.org/r/20180504153218.7301-1-bigeasy@linutronix.de Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Nicholas Bellinger <nab@linux-iscsi.org> Cc: Shaohua Li <shli@fb.com> Cc: Kent Overstreet <kent.overstreet@gmail.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-06-07lib/idr.c: remove simple_ida_lockMatthew Wilcox
Improve the scalability of the IDA by using the per-IDA xa_lock rather than the global simple_ida_lock. IDAs are not typically used in performance-sensitive locations, but since we have this lock anyway, we can use it. It is also a step towards converting the IDA from the radix tree to the XArray. [akpm@linux-foundation.org: idr.c needs xarray.h] Link: http://lkml.kernel.org/r/20180331125332.GF13332@bombadil.infradead.org Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-06-07lib/bitmap.c: micro-optimization for __bitmap_complement()Yury Norov
Use BITS_TO_LONGS() macro to avoid calculation of reminder (bits % BITS_PER_LONG) On ARM64 it saves 5 instruction for function - 16 before and 11 after. Link: http://lkml.kernel.org/r/20180411145914.6011-1-ynorov@caviumnetworks.com Signed-off-by: Yury Norov <ynorov@caviumnetworks.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Matthew Wilcox <mawilcox@microsoft.com> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-06-07get_maintainer: improve patch recognitionJoe Perches
There are mode change and rename only patches that are unrecognized by the get_maintainer.pl script. Recognize them. Link: http://lkml.kernel.org/r/bf63101a908d0ff51948164aa60e672368066186.1526949367.git.joe@perches.com Signed-off-by: Joe Perches <joe@perches.com> Reported-by: Heinrich Schuchardt <xypron.glpk@gmx.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-06-07kernel/hung_task.c: show all hung tasks before panicTetsuo Handa
When we get a hung task it can often be valuable to see _all_ the hung tasks on the system before calling panic(). Quoting from https://syzkaller.appspot.com/text?tag=CrashReport&id=5316056503549952 ---------------------------------------- INFO: task syz-executor0:6540 blocked for more than 120 seconds. Not tainted 4.16.0+ #13 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D23560 6540 4521 0x80000004 Call Trace: context_switch kernel/sched/core.c:2848 [inline] __schedule+0x8fb/0x1ef0 kernel/sched/core.c:3490 schedule+0xf5/0x430 kernel/sched/core.c:3549 schedule_preempt_disabled+0x10/0x20 kernel/sched/core.c:3607 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0xb7f/0x1810 kernel/locking/mutex.c:893 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:908 lo_ioctl+0x8b/0x1b70 drivers/block/loop.c:1355 __blkdev_driver_ioctl block/ioctl.c:303 [inline] blkdev_ioctl+0x1759/0x1e00 block/ioctl.c:601 ioctl_by_bdev+0xa5/0x110 fs/block_dev.c:2060 isofs_get_last_session fs/isofs/inode.c:567 [inline] isofs_fill_super+0x2ba9/0x3bc0 fs/isofs/inode.c:660 mount_bdev+0x2b7/0x370 fs/super.c:1119 isofs_mount+0x34/0x40 fs/isofs/inode.c:1560 mount_fs+0x66/0x2d0 fs/super.c:1222 vfs_kern_mount.part.26+0xc6/0x4a0 fs/namespace.c:1037 vfs_kern_mount fs/namespace.c:2514 [inline] do_new_mount fs/namespace.c:2517 [inline] do_mount+0xea4/0x2b90 fs/namespace.c:2847 ksys_mount+0xab/0x120 fs/namespace.c:3063 SYSC_mount fs/namespace.c:3077 [inline] SyS_mount+0x39/0x50 fs/namespace.c:3074 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x42/0xb7 (...snipped...) Showing all locks held in the system: (...snipped...) 2 locks held by syz-executor0/6540: #0: 00000000566d4c39 (&type->s_umount_key#49/1){+.+.}, at: alloc_super fs/super.c:211 [inline] #0: 00000000566d4c39 (&type->s_umount_key#49/1){+.+.}, at: sget_userns+0x3b2/0xe60 fs/super.c:502 /* down_write_nested(&s->s_umount, SINGLE_DEPTH_NESTING); */ #1: 0000000043ca8836 (&lo->lo_ctl_mutex/1){+.+.}, at: lo_ioctl+0x8b/0x1b70 drivers/block/loop.c:1355 /* mutex_lock_nested(&lo->lo_ctl_mutex, 1); */ (...snipped...) 3 locks held by syz-executor7/6541: #0: 0000000043ca8836 (&lo->lo_ctl_mutex/1){+.+.}, at: lo_ioctl+0x8b/0x1b70 drivers/block/loop.c:1355 /* mutex_lock_nested(&lo->lo_ctl_mutex, 1); */ #1: 000000007bf3d3f9 (&bdev->bd_mutex){+.+.}, at: blkdev_reread_part+0x1e/0x40 block/ioctl.c:192 #2: 00000000566d4c39 (&type->s_umount_key#50){.+.+}, at: __get_super.part.10+0x1d3/0x280 fs/super.c:663 /* down_read(&sb->s_umount); */ ---------------------------------------- When reporting an AB-BA deadlock like shown above, it would be nice if trace of PID=6541 is printed as well as trace of PID=6540 before calling panic(). Showing hung tasks up to /proc/sys/kernel/hung_task_warnings could delay calling panic() but normally there should not be so many hung tasks. Link: http://lkml.kernel.org/r/201804050705.BHE57833.HVFOFtSOMQJFOL@I-love.SAKURA.ne.jp Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dmitry Vyukov <dvyukov@google.com> Cc: Vegard Nossum <vegard.nossum@oracle.com> Cc: Mandeep Singh Baines <msb@chromium.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-06-07include/linux/types.h: use fixed width types without double-underscore prefixMasahiro Yamada
This header file is not exported. It is safe to reference types without double-underscore prefix. Link: http://lkml.kernel.org/r/1526350925-14922-3-git-send-email-yamada.masahiro@socionext.com Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Lihao Liang <lianglihao@huawei.com> Cc: Philippe Ombredanne <pombredanne@nexb.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
generated by cgit (git 2.34.1) at 2025-09-12 21:20:37 +0000