- 14 Apr, 2018 13 commits
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AKASHI Takahiro authored
The code guarded by CONFIG_X86_64 is necessary on some architectures which have a dedicated kernel mapping outside of linear memory mapping. (arm64 is among those.) In this patch, an additional argument, kernel_map, is added to enable/ disable the code removing #ifdef. Link: http://lkml.kernel.org/r/20180306102303.9063-5-takahiro.akashi@linaro.orgSigned-off-by:
AKASHI Takahiro <takahiro.akashi@linaro.org> Acked-by:
Dave Young <dyoung@redhat.com> Tested-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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AKASHI Takahiro authored
While prepare_elf64_headers() in x86 looks pretty generic for other architectures' use, it contains some code which tries to list crash memory regions by walking through system resources, which is not always architecture agnostic. To make this function more generic, the related code should be purged. In this patch, prepare_elf64_headers() simply scans crash_mem buffer passed and add all the listed regions to elf header as a PT_LOAD segment. So walk_system_ram_res(prepare_elf64_headers_callback) have been moved forward before prepare_elf64_headers() where the callback, prepare_elf64_headers_callback(), is now responsible for filling up crash_mem buffer. Meanwhile exclude_elf_header_ranges() used to be called every time in this callback it is rather redundant and now called only once in prepare_elf_headers() as well. Link: http://lkml.kernel.org/r/20180306102303.9063-4-takahiro.akashi@linaro.orgSigned-off-by:
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AKASHI Takahiro authored
As arch_kexec_kernel_image_{probe,load}(), arch_kimage_file_post_load_cleanup() and arch_kexec_kernel_verify_sig() are almost duplicated among architectures, they can be commonalized with an architecture-defined kexec_file_ops array. So let's factor them out. Link: http://lkml.kernel.org/r/20180306102303.9063-3-takahiro.akashi@linaro.orgSigned-off-by: -
AKASHI Takahiro authored
Patch series "kexec_file, x86, powerpc: refactoring for other architecutres", v2. This is a preparatory patchset for adding kexec_file support on arm64. It was originally included in a arm64 patch set[1], but Philipp is also working on their kexec_file support on s390[2] and some changes are now conflicting. So these common parts were extracted and put into a separate patch set for better integration. What's more, my original patch#4 was split into a few small chunks for easier review after Dave's comment. As such, the resulting code is basically identical with my original, and the only *visible* differences are: - renaming of _kexec_kernel_image_probe() and _kimage_file_post_load_cleanup() - change one of types of arguments at prepare_elf64_headers() Those, unfortunately, require a couple of trivial changes on the rest (#1, #6 to #13) of my arm64 kexec_file patch set[1]. Patch #1 allows making a use of purgatory optional, particularly useful for arm64. Patch #2 commonalizes arch_kexec_kernel_{image_probe, image_load, verify_sig}() and arch_kimage_file_post_load_cleanup() across architectures. Patches #3-#7 are also intended to generalize parse_elf64_headers(), along with exclude_mem_range(), to be made best re-use of. [1] http://lists.infradead.org/pipermail/linux-arm-kernel/2018-February/561182.html [2] http://lkml.iu.edu//hypermail/linux/kernel/1802.1/02596.html This patch (of 7): On arm64, crash dump kernel's usable memory is protected by *unmapping* it from kernel virtual space unlike other architectures where the region is just made read-only. It is highly unlikely that the region is accidentally corrupted and this observation rationalizes that digest check code can also be dropped from purgatory. The resulting code is so simple as it doesn't require a bit ugly re-linking/relocation stuff, i.e. arch_kexec_apply_relocations_add(). Please see: http://lists.infradead.org/pipermail/linux-arm-kernel/2017-December/545428.html All that the purgatory does is to shuffle arguments and jump into a new kernel, while we still need to have some space for a hash value (purgatory_sha256_digest) which is never checked against. As such, it doesn't make sense to have trampline code between old kernel and new kernel on arm64. This patch introduces a new configuration, ARCH_HAS_KEXEC_PURGATORY, and allows related code to be compiled in only if necessary. [takahiro.akashi@linaro.org: fix trivial screwup] Link: http://lkml.kernel.org/r/20180309093346.GF25863@linaro.org Link: http://lkml.kernel.org/r/20180306102303.9063-2-takahiro.akashi@linaro.orgSigned-off-by: -
Alexey Dobriyan authored
If module removes proc directory while another process pins it by chdir'ing to it, then subsequent recreation of proc entry and all entries down the tree will not be visible to any process until pinning process unchdir from directory and unpins everything. Steps to reproduce: proc_mkdir("aaa", NULL); proc_create("aaa/bbb", ...); chdir("/proc/aaa"); remove_proc_entry("aaa/bbb", NULL); remove_proc_entry("aaa", NULL); proc_mkdir("aaa", NULL); # inaccessible because "aaa" dentry still points # to the original "aaa". proc_create("aaa/bbb", ...); Fix is to implement ->d_revalidate and ->d_delete. Link: http://lkml.kernel.org/r/20180312201938.GA4871@avx2Signed-off-by:Alexey Dobriyan <adobriyan@gmail.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
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Vlastimil Babka authored
cache_reap() is initially scheduled in start_cpu_timer() via schedule_delayed_work_on(). But then the next iterations are scheduled via schedule_delayed_work(), i.e. using WORK_CPU_UNBOUND. Thus since commit ef557180 ("workqueue: schedule WORK_CPU_UNBOUND work on wq_unbound_cpumask CPUs") there is no guarantee the future iterations will run on the originally intended cpu, although it's still preferred. I was able to demonstrate this with /sys/module/workqueue/parameters/debug_force_rr_cpu. IIUC, it may also happen due to migrating timers in nohz context. As a result, some cpu's would be calling cache_reap() more frequently and others never. This patch uses schedule_delayed_work_on() with the current cpu when scheduling the next iteration. Link: http://lkml.kernel.org/r/20180411070007.32225-1-vbabka@suse.cz Fixes: ef557180 ("workqueue: schedule WORK_CPU_UNBOUND work on wq_unbound_cpumask CPUs") Signed-off-by:
Vlastimil Babka <vbabka@suse.cz> Acked-by:
Pekka Enberg <penberg@kernel.org> Acked-by:
Christoph Lameter <cl@linux.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: David Rientjes <rientjes@google.com> Cc: Tejun Heo <tj@kernel.org> Cc: Lai Jiangshan <jiangshanlai@gmail.com> Cc: John Stultz <john.stultz@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Stephen Boyd <sboyd@kernel.org> Cc: <stable@vger.kernel.org> Signed-off-by:
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Petr Tesarik authored
Since commit 6326fec1 ("mm: Use owner_priv bit for PageSwapCache, valid when PageSwapBacked"), PG_swapcache is an alias for PG_owner_priv_1, which may be also used for other purposes. To know whether the bit indeed has the PG_swapcache meaning, it is necessary to check PG_swapbacked, hence this bit must be exported. Link: http://lkml.kernel.org/r/20180410161345.142e142d@ezekiel.suse.czSigned-off-by:
Petr Tesarik <ptesarik@suse.com> Reviewed-by:
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Eric Biggers authored
syzbot reported a use-after-free of shm_file_data(file)->file->f_op in shm_get_unmapped_area(), called via sys_remap_file_pages(). Unfortunately it couldn't generate a reproducer, but I found a bug which I think caused it. When remap_file_pages() is passed a full System V shared memory segment, the memory is first unmapped, then a new map is created using the ->vm_file. Between these steps, the shm ID can be removed and reused for a new shm segment. But, shm_mmap() only checks whether the ID is currently valid before calling the underlying file's ->mmap(); it doesn't check whether it was reused. Thus it can use the wrong underlying file, one that was already freed. Fix this by making the "outer" shm file (the one that gets put in ->vm_file) hold a reference to the real shm file, and by making __shm_open() require that the file associated with the shm ID matches the one associated with the "outer" file. Taking the reference to the real shm file is needed to fully solve the problem, since otherwise sfd->file could point to a freed file, which then could be reallocated for the reused shm ID, causing the wrong shm segment to be mapped (and without the required permission checks). Commit 1ac0b6de ("ipc/shm: handle removed segments gracefully in shm_mmap()") almost fixed this bug, but it didn't go far enough because it didn't consider the case where the shm ID is reused. The following program usually reproduces this bug: #include <stdlib.h> #include <sys/shm.h> #include <sys/syscall.h> #include <unistd.h> int main() { int is_parent = (fork() != 0); srand(getpid()); for (;;) { int id = shmget(0xF00F, 4096, IPC_CREAT|0700); if (is_parent) { void *addr = shmat(id, NULL, 0); usleep(rand() % 50); while (!syscall(__NR_remap_file_pages, addr, 4096, 0, 0, 0)); } else { usleep(rand() % 50); shmctl(id, IPC_RMID, NULL); } } } It causes the following NULL pointer dereference due to a 'struct file' being used while it's being freed. (I couldn't actually get a KASAN use-after-free splat like in the syzbot report. But I think it's possible with this bug; it would just take a more extraordinary race...) BUG: unable to handle kernel NULL pointer dereference at 0000000000000058 PGD 0 P4D 0 Oops: 0000 [#1] SMP NOPTI CPU: 9 PID: 258 Comm: syz_ipc Not tainted 4.16.0-05140-gf8cf2f16 #189 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.11.0-20171110_100015-anatol 04/01/2014 RIP: 0010:d_inode include/linux/dcache.h:519 [inline] RIP: 0010:touch_atime+0x25/0xd0 fs/inode.c:1724 [...] Call Trace: file_accessed include/linux/fs.h:2063 [inline] shmem_mmap+0x25/0x40 mm/shmem.c:2149 call_mmap include/linux/fs.h:1789 [inline] shm_mmap+0x34/0x80 ipc/shm.c:465 call_mmap include/linux/fs.h:1789 [inline] mmap_region+0x309/0x5b0 mm/mmap.c:1712 do_mmap+0x294/0x4a0 mm/mmap.c:1483 do_mmap_pgoff include/linux/mm.h:2235 [inline] SYSC_remap_file_pages mm/mmap.c:2853 [inline] SyS_remap_file_pages+0x232/0x310 mm/mmap.c:2769 do_syscall_64+0x64/0x1a0 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ebiggers@google.com: add comment] Link: http://lkml.kernel.org/r/20180410192850.235835-1-ebiggers3@gmail.com Link: http://lkml.kernel.org/r/20180409043039.28915-1-ebiggers3@gmail.com Reported-by: syzbot+d11f321e7f1923157eac80aa990b446596f46439@syzkaller.appspotmail.com Fixes: c8d78c18 ("mm: replace remap_file_pages() syscall with emulation") Signed-off-by:
Eric Biggers <ebiggers@google.com> Acked-by:
Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by:
Davidlohr Bueso <dbueso@suse.de> Cc: Manfred Spraul <manfred@colorfullife.com> Cc: "Eric W . Biederman" <ebiederm@xmission.com> Cc: <stable@vger.kernel.org> Signed-off-by:
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Arnd Bergmann authored
Building orangefs on MMU-less machines now results in a link error because of the newly introduced use of the filemap_page_mkwrite() function: ERROR: "filemap_page_mkwrite" [fs/orangefs/orangefs.ko] undefined! This adds a dummy version for it, similar to the existing generic_file_mmap and generic_file_readonly_mmap stubs in the same file, to avoid the link error without adding #ifdefs in each file system that uses these. Link: http://lkml.kernel.org/r/20180409105555.2439976-1-arnd@arndb.de Fixes: a5135eea ("orangefs: implement vm_ops->fault") Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Reviewed-by:
Jan Kara <jack@suse.cz> Reviewed-by:
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Michael S. Tsirkin authored
__get_user_pages_fast handles errors differently from get_user_pages_fast: the former always returns the number of pages pinned, the later might return a negative error code. Link: http://lkml.kernel.org/r/1522962072-182137-6-git-send-email-mst@redhat.comSigned-off-by:
Michael S. Tsirkin <mst@redhat.com> Reviewed-by:
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Michael S. Tsirkin authored
get_user_pages_fast is supposed to be a faster drop-in equivalent of get_user_pages. As such, callers expect it to return a negative return code when passed an invalid address, and never expect it to return 0 when passed a positive number of pages, since its documentation says: * Returns number of pages pinned. This may be fewer than the number * requested. If nr_pages is 0 or negative, returns 0. If no pages * were pinned, returns -errno. When get_user_pages_fast fall back on get_user_pages this is exactly what happens. Unfortunately the implementation is inconsistent: it returns 0 if passed a kernel address, confusing callers: for example, the following is pretty common but does not appear to do the right thing with a kernel address: ret = get_user_pages_fast(addr, 1, writeable, &page); if (ret < 0) return ret; Change get_user_pages_fast to return -EFAULT when supplied a kernel address to make it match expectations. All callers have been audited for consistency with the documented semantics. Link: http://lkml.kernel.org/r/1522962072-182137-4-git-send-email-mst@redhat.com Fixes: 5b65c467 ("mm, x86/mm: Fix performance regression in get_user_pages_fast()") Signed-off-by: -
Michael S. Tsirkin authored
Patch series "mm/get_user_pages_fast fixes, cleanups", v2. Turns out get_user_pages_fast and __get_user_pages_fast return different values on error when given a single page: __get_user_pages_fast returns 0. get_user_pages_fast returns either 0 or an error. Callers of get_user_pages_fast expect an error so fix it up to return an error consistently. Stress the difference between get_user_pages_fast and __get_user_pages_fast to make sure callers aren't confused. This patch (of 3): __gup_benchmark_ioctl does not handle the case where get_user_pages_fast fails: - a negative return code will cause a buffer overrun - returning with partial success will cause use of uninitialized memory. [akpm@linux-foundation.org: simplification] Link: http://lkml.kernel.org/r/1522962072-182137-3-git-send-email-mst@redhat.comSigned-off-by:
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Takashi Iwai authored
We've got a bug report indicating a kernel panic at booting on an x86-32 system, and it turned out to be the invalid PCI resource assigned after reallocation. __find_resource() first aligns the resource start address and resets the end address with start+size-1 accordingly, then checks whether it's contained. Here the end address may overflow the integer, although resource_contains() still returns true because the function validates only start and end address. So this ends up with returning an invalid resource (start > end). There was already an attempt to cover such a problem in the commit 47ea91b4 ("Resource: fix wrong resource window calculation"), but this case is an overseen one. This patch adds the validity check of the newly calculated resource for avoiding the integer overflow problem. Bugzilla: http://bugzilla.opensuse.org/show_bug.cgi?id=1086739 Link: http://lkml.kernel.org/r/s5hpo37d5l8.wl-tiwai@suse.de Fixes: 23c570a6 ("resource: ability to resize an allocated resource") Signed-off-by:
Takashi Iwai <tiwai@suse.de> Reported-by:
Michael Henders <hendersm@shaw.ca> Tested-by:
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- 13 Apr, 2018 5 commits
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git://people.freedesktop.org/~airlied/linuxLinus Torvalds authored
Pull drm fixes from Dave Airlie: "One omap, and one alsa pm fix (we merged the breaking patch via drm tree). Otherwise it's two bunches of amdgpu fixes, removing an unneeded file, some DC fixes, HDMI audio regression fix, and some vega12 fixes" * tag 'drm-fixes-for-v4.17-rc1' of git://people.freedesktop.org/~airlied/linux: (27 commits) Revert "drm/amd/display: disable CRTCs with NULL FB on their primary plane (V2)" Revert "drm/amd/display: fix dereferencing possible ERR_PTR()" drm/amd/display: Fix regamma not affecting full-intensity color values drm/amd/display: Fix FBC text console corruption drm/amd/display: Only register backlight device if embedded panel connected drm/amd/display: fix brightness level after resume from suspend drm/amd/display: HDMI has no sound after Panel power off/on drm/amdgpu: add MP1 and THM hw ip base reg offset drm/amdgpu: fix null pointer panic with direct fw loading on gpu reset drm/radeon: add PX quirk for Asus K73TK drm/omap: fix crash if there's no video PLL drm/amdgpu: Fix memory leaks at amdgpu_init() error path drm/amdgpu: Fix PCIe lane width calculation drm/radeon: Fix PCIe lane width calculation drm/amdgpu/si: implement get/set pcie_lanes asic callback drm/amdgpu: Add support for SRBM selection v3 Revert "drm/amdgpu: Don't change preferred domian when fallback GTT v5" drm/amd/powerply: fix power reading on Fiji drm/amd/powerplay: Enable ACG SS feature drm/amdgpu/sdma: fix mask in emit_pipeline_sync ...
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git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-traceLinus Torvalds authored
Pull tracing fixes from Steven Rostedt: "A few clean ups and bug fixes: - replace open coded "ARRAY_SIZE()" with macro - updates to uprobes - bug fix for perf event filter on error path" * tag 'trace-v4.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: tracing: Enforce passing in filter=NULL to create_filter() trace_uprobe: Simplify probes_seq_show() trace_uprobe: Use %lx to display offset tracing/uprobe: Add support for overlayfs tracing: Use ARRAY_SIZE() macro instead of open coding it
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Alexey Dobriyan authored
Add copyright in two files before they get autorubberstamped. Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pciLinus Torvalds authored
Pull PCI fixes from Bjorn Helgaas: - mark Extended Tags as broken on Broadcom HT1100 and HT2000 Root Ports to fix drm/Xorg hangs and unresponsive keyboards (Sinan Kaya) - remove useless messages during resource reassignment (Desnes A. Nunes do Rosario) * tag 'pci-v4.17-changes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: PCI: Remove messages about reassigning resources PCI: Mark Broadcom HT1100 and HT2000 Root Port Extended Tags as broken
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git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linuxLinus Torvalds authored
Pull parisc updates from Helge Deller: - fix panic when halting system via "shutdown -h now" - drop own coding in favour of generic CONFIG_COMPAT_BINFMT_ELF implementation - add FPE_CONDTRAP constant: last outstanding parisc-specific cleanup for Eric Biedermans siginfo patches - move some functions to .init and some to .text.hot linker sections * 'parisc-4.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: parisc: Prevent panic at system halt parisc: Switch to generic COMPAT_BINFMT_ELF parisc: Move cache flush functions into .text.hot section parisc/signal: Add FPE_CONDTRAP for conditional trap handling
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- 12 Apr, 2018 22 commits
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git://people.freedesktop.org/~agd5f/linuxDave Airlie authored
- Add a PX quirk for radeon - Fix flickering and stability issues with DC on some platforms - Fix HDMI audio regression - Few other misc DC and base driver fixes * 'drm-next-4.17' of git://people.freedesktop.org/~agd5f/linux: Revert "drm/amd/display: disable CRTCs with NULL FB on their primary plane (V2)" Revert "drm/amd/display: fix dereferencing possible ERR_PTR()" drm/amd/display: Fix regamma not affecting full-intensity color values drm/amd/display: Fix FBC text console corruption drm/amd/display: Only register backlight device if embedded panel connected drm/amd/display: fix brightness level after resume from suspend drm/amd/display: HDMI has no sound after Panel power off/on drm/amdgpu: add MP1 and THM hw ip base reg offset drm/amdgpu: fix null pointer panic with direct fw loading on gpu reset drm/radeon: add PX quirk for Asus K73TK
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Dave Airlie authored
Merge tag 'drm-misc-next-fixes-2018-04-11' of git://anongit.freedesktop.org/drm/drm-misc into drm-next omap: Fix crash on AM4 EVM, and all OMAP2/3 boards (Tomi) Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> * tag 'drm-misc-next-fixes-2018-04-11' of git://anongit.freedesktop.org/drm/drm-misc: drm/omap: fix crash if there's no video PLL
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git://git.kernel.org/pub/scm/fs/xfs/xfs-linuxLinus Torvalds authored
Pull more xfs updates from Darrick Wong: "Most of these are code cleanups, but there are a couple of notable use-after-free bug fixes. This series has been run through a full xfstests run over the week and through a quick xfstests run against this morning's master, with no major failures reported. - clean up unnecessary function call parameters - fix a use-after-free bug when aborting logging intents - refactor filestreams state data to avoid use-after-free bug - fix incorrect removal of cow extents when truncating extended attributes. - refactor open-coded __set_page_dirty in favor of using vfs function. - fix a deadlock when fstrim and fs shutdown race" * tag 'xfs-4.17-merge-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: Force log to disk before reading the AGF during a fstrim Export __set_page_dirty xfs: only cancel cow blocks when truncating the data fork xfs: non-scrub - remove unused function parameters xfs: remove filestream item xfs_inode reference xfs: fix intent use-after-free on abort xfs: Remove "committed" argument of xfs_dir_ialloc -
git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2Linus Torvalds authored
Pull more gfs2 updates from Bob Peterson: "We decided to request the latest three patches to be merged into this merge window while it's still open. - The first patch adds a new function to lockref: lockref_put_not_zero - The second patch fixes GFS2's glock dump code so it uses the new lockref function. This fixes a problem whereby lock dumps could miss glocks. - I made a minor patch to update some comments and fix the lock ordering text in our gfs2-glocks.txt Documentation file" * tag 'gfs2-4.17.fixes2' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2: GFS2: Minor improvements to comments and documentation gfs2: Stop using rhashtable_walk_peek lockref: Add lockref_put_not_zero -
git://git.linux-nfs.org/projects/anna/linux-nfsLinus Torvalds authored
Pull NFS client updates from Anna Schumaker: "Stable bugfixes: - xprtrdma: Fix corner cases when handling device removal # v4.12+ - xprtrdma: Fix latency regression on NUMA NFS/RDMA clients # v4.15+ Features: - New sunrpc tracepoint for RPC pings - Finer grained NFSv4 attribute checking - Don't unnecessarily return NFS v4 delegations Other bugfixes and cleanups: - Several other small NFSoRDMA cleanups - Improvements to the sunrpc RTT measurements - A few sunrpc tracepoint cleanups - Various fixes for NFS v4 lock notifications - Various sunrpc and NFS v4 XDR encoding cleanups - Switch to the ida_simple API - Fix NFSv4.1 exclusive create - Forget acl cache after setattr operation - Don't advance the nfs_entry readdir cookie if xdr decoding fails" * tag 'nfs-for-4.17-1' of git://git.linux-nfs.org/projects/anna/linux-nfs: (47 commits) NFS: advance nfs_entry cookie only after decoding completes successfully NFSv3/acl: forget acl cache after setattr NFSv4.1: Fix exclusive create NFSv4: Declare the size up to date after it was set. nfs: Use ida_simple API NFSv4: Fix the nfs_inode_set_delegation() arguments NFSv4: Clean up CB_GETATTR encoding NFSv4: Don't ask for attributes when ACCESS is protected by a delegation NFSv4: Add a helper to encode/decode struct timespec NFSv4: Clean up encode_attrs NFSv4; Clean up XDR encoding of type bitmap4 NFSv4: Allow GFP_NOIO sleeps in decode_attr_owner/decode_attr_group SUNRPC: Add a helper for encoding opaque data inline SUNRPC: Add helpers for decoding opaque and string types NFSv4: Ignore change attribute invalidations if we hold a delegation NFS: More fine grained attribute tracking NFS: Don't force unnecessary cache invalidation in nfs_update_inode() NFS: Don't redirty the attribute cache in nfs_wcc_update_inode() NFS: Don't force a revalidation of all attributes if change is missing NFS: Convert NFS_INO_INVALID flags to unsigned long ...
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfsLinus Torvalds authored
Pull vfs thaw updates from Al Viro: "An ancient series that has fallen through the cracks in the previous cycle" * 'work.thaw' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: buffer.c: call thaw_super during emergency thaw vfs: factor sb iteration out of do_emergency_remount
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Harry Wentland authored
This seems to cause flickering and lock-ups for a wide range of users. Revert until we've found a proper fix for the flickering and lock-ups. This reverts commit 36cc549d. Cc: Shirish S <shirish.s@amd.com> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org Reviewed-by:
Michel Dänzer <michel.daenzer@amd.com> Signed-off-by:
Harry Wentland <harry.wentland@amd.com> Signed-off-by:
Alex Deucher <alexander.deucher@amd.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfsLinus Torvalds authored
Pull AFS updates from Al Viro: "The AFS series posted by dhowells depended upon lookup_one_len() rework; now that prereq is in the mainline, that series had been rebased on top of it and got some exposure and testing..." * 'afs-dh' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: afs: Do better accretion of small writes on newly created content afs: Add stats for data transfer operations afs: Trace protocol errors afs: Locally edit directory data for mkdir/create/unlink/... afs: Adjust the directory XDR structures afs: Split the directory content defs into a header afs: Fix directory handling afs: Split the dynroot stuff out and give it its own ops tables afs: Keep track of invalid-before version for dentry coherency afs: Rearrange status mapping afs: Make it possible to get the data version in readpage afs: Init inode before accessing cache afs: Introduce a statistics proc file afs: Dump bad status record afs: Implement @cell substitution handling afs: Implement @sys substitution handling afs: Prospectively look up extra files when doing a single lookup afs: Don't over-increment the cell usage count when pinning it afs: Fix checker warnings vfs: Remove the const from dir_context::actor
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Harry Wentland authored
This reverts commit cd2d6c92. Cc: Shirish S <shirish.s@amd.com> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org Reviewed-by:
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Leo (Sunpeng) Li authored
Hardware understands the regamma LUT as a piecewise linear function, with points spaced exponentially along the range. We previously programmed the LUT for range [2^-10, 2^0). This causes (normalized) color values of 1 (=2^0) to miss the programmed LUT, and fall onto the end region. For DCE, the end region is extrapolated using a single (base, slope) pair, using the max y-value from the last point in the curve as base. This presents a problem, since this value affects all three color channels. Scaling down the intensity of say - the blue regamma curve - will not affect it's end region. This is especially noticiable when using RedShift. It scales down the blue and green channels, but leaves full-intensity colors unshifted. Therefore, extend the range to cover [2^-10, 2^1) by programming another hardware segment, containing only one point. That way, we won't be hitting the end region. Note that things are a bit different for DCN, since the end region can be set per-channel. Signed-off-by:
Leo (Sunpeng) Li <sunpeng.li@amd.com> Reviewed-by:
Krunoslav Kovac <Krunoslav.Kovac@amd.com> Acked-by:
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Roman Li authored
Signed-off-by:
Roman Li <roman.li@amd.com> Reviewed-by:
Charlene Liu <Charlene.Liu@amd.com> Acked-by:
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Harry Wentland authored
Signed-off-by:
Tony Cheng <Tony.Cheng@amd.com> Acked-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds authored
Pull networking fixes from David Miller: 1) In ip_gre tunnel, handle the conflict between TUNNEL_{SEQ,CSUM} and GSO/LLTX properly. From Sabrina Dubroca. 2) Stop properly on error in lan78xx_read_otp(), from Phil Elwell. 3) Don't uncompress in slip before rstate is initialized, from Tejaswi Tanikella. 4) When using 1.x firmware on aquantia, issue a deinit before we hardware reset the chip, otherwise we break dirty wake WOL. From Igor Russkikh. 5) Correct log check in vhost_vq_access_ok(), from Stefan Hajnoczi. 6) Fix ethtool -x crashes in bnxt_en, from Michael Chan. 7) Fix races in l2tp tunnel creation and duplicate tunnel detection, from Guillaume Nault. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (22 commits) l2tp: fix race in duplicate tunnel detection l2tp: fix races in tunnel creation tun: send netlink notification when the device is modified tun: set the flags before registering the netdevice lan78xx: Don't reset the interface on open bnxt_en: Fix NULL pointer dereference at bnxt_free_irq(). bnxt_en: Need to include RDMA rings in bnxt_check_rings(). bnxt_en: Support max-mtu with VF-reps bnxt_en: Ignore src port field in decap filter nodes bnxt_en: do not allow wildcard matches for L2 flows bnxt_en: Fix ethtool -x crash when device is down. vhost: return bool from *_access_ok() functions vhost: fix vhost_vq_access_ok() log check vhost: Fix vhost_copy_to_user() net: aquantia: oops when shutdown on already stopped device net: aquantia: Regression on reset with 1.x firmware cdc_ether: flag the Cinterion AHS8 modem by gemalto as WWAN slip: Check if rstate is initialized before uncompressing lan78xx: Avoid spurious kevent 4 "error" lan78xx: Correctly indicate invalid OTP ... -
git://git.kernel.org/pub/scm/linux/kernel/git/xen/tipLinus Torvalds authored
Pull xen fixes from Juergen Gross: "A few fixes of Xen related core code and drivers" * tag 'for-linus-4.17-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: xen/pvh: Indicate XENFEAT_linux_rsdp_unrestricted to Xen xen/acpi: off by one in read_acpi_id() xen/acpi: upload _PSD info for non Dom0 CPUs too x86/xen: Delay get_cpu_cap until stack canary is established xen: xenbus_dev_frontend: Verify body of XS_TRANSACTION_END xen: xenbus: Catch closing of non existent transactions xen: xenbus_dev_frontend: Fix XS_TRANSACTION_END handling
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git://git.infradead.org/users/hch/dma-mappingLinus Torvalds authored
Pull dma-mapping fix from Christoph Hellwig: "Fix for one swiotlb regression in 2.16 from Takashi" * tag 'dma-mapping-4.17-2' of git://git.infradead.org/users/hch/dma-mapping: swiotlb: fix unexpected swiotlb_alloc_coherent failures
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git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmcLinus Torvalds authored
Pull MMC fixes from Ulf Hansson: "MMC core: - Prevent bus reference leak in mmc_blk_init() MMC host: - tmio: Fix error handling when issuing CMD23 - jz4740: Fix race condition in IRQ mask update" * tag 'mmc-v4.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: mmc: tmio: Fix error handling when issuing CMD23 mmc: core: Prevent bus reference leak in mmc_blk_init() mmc: jz4740: Fix race condition in IRQ mask update
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git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/kgdbLinus Torvalds authored
Pull kdb updates from Jason Wessel: - fix 2032 time access issues and new compiler warnings - minor regression test cleanup - formatting fixes for end user use of kdb * tag 'for_linus-4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/kgdb: kdb: use memmove instead of overlapping memcpy kdb: use ktime_get_mono_fast_ns() instead of ktime_get_ts() kdb: bl: don't use tab character in output kdb: drop newline in unknown command output kdb: make "mdr" command repeat kdb: use __ktime_get_real_seconds instead of __current_kernel_time misc: kgdbts: Display progress of asynchronous tests
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git://git.monstr.eu/linux-2.6-microblazeLinus Torvalds authored
Pull microblaze updates from Michal Simek: "Use generic pci_mmap_resource_range()" * tag 'microblaze-4.17-rc1' of git://git.monstr.eu/linux-2.6-microblaze: microblaze: Use generic pci_mmap_resource_range() microblaze: Provide pgprot_device/writecombine macros for nommu
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Bob Peterson authored
This patch simply fixes some comments and the gfs2-glocks.txt file: Places where i_rwsem was called i_mutex, and adding i_rw_mutex. Signed-off-by:Bob Peterson <rpeterso@redhat.com>
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Andreas Gruenbacher authored
Function rhashtable_walk_peek is problematic because there is no guarantee that the glock previously returned still exists; when that key is deleted, rhashtable_walk_peek can end up returning a different key, which will cause an inconsistent glock dump. Fix this by keeping track of the current glock in the seq file iterator functions instead. Signed-off-by:
Andreas Gruenbacher <agruenba@redhat.com> Signed-off-by:
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Andreas Gruenbacher authored
Put a lockref unless the lockref is dead or its count would become zero. This is the same as lockref_put_or_lock except that the lock is never left held. Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-genericLinus Torvalds authored
Pull asm-generic fixes from Arnd Bergmann: "I have one regression fix for a minor build problem after the architecture removal series, plus a rework of the barriers in the readl/writel functions, thanks to work by Sinan Kaya: This started from a discussion on the linuxpcc and rdma mailing lists[1]. To summarize, we decided that architectures are responsible to serialize readl() and writel() accesses on a device MMIO space relative to DMA performed by that device. This series provides a pessimistic implementation of that behavior for asm-generic/io.h, which is in turn used by a number of architectures (h8300, microblaze, nios2, openrisc, s390, sparc, um, unicore32, and xtensa). Some of those presumably need no extra barriers, or something weaker than rmb()/wmb(), and they are advised to override the new default for better performance. For inb()/outb(), the same barriers are used, but architectures might want to add another barrier to outb() here if that can guarantee non-posted behavior (some architectures can, others cannot do that). The readl_relaxed()/writel_relaxed() family of functions retains the existing behavior with no extra barriers" [1] https://lists.ozlabs.org/pipermail/linuxppc-dev/2018-March/170481.html * tag 'asm-generic' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: io: change writeX_relaxed() to remove barriers io: change readX_relaxed() to remove barriers dts: remove cris & metag dts hard link file io: change inX() to have their own IO barrier overrides io: change outX() to have their own IO barrier overrides io: define stronger ordering for the default writeX() implementation io: define stronger ordering for the default readX() implementation io: define several IO & PIO barrier types for the asm-generic version
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