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2020-07-24io_uring: move BUFFER_SELECT check into *recv[msg]Pavel Begunkov
Move REQ_F_BUFFER_SELECT flag check out of io_recv_buffer_select(), and do that in its call sites That saves us from double error checking and possibly an extra function call. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-24io_uring: free selected-bufs if error'edPavel Begunkov
io_clean_op() may be skipped even if there is a selected io_buffer, that's because *select_buffer() funcions never set REQ_F_NEED_CLEANUP. Trigger io_clean_op() when REQ_F_BUFFER_SELECTED is set as well, and and clear the flag if was freed out of it. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-24io_uring: don't forget cflags in io_recv()Pavel Begunkov
Instead of returning error from io_recv(), go through generic cleanup path, because it'll retain cflags for userspace. Do the same for io_send() for consistency. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-24io_uring: remove extra checks in send/recvPavel Begunkov
With the return on a bad socket, kmsg is always non-null by the end of the function, prune left extra checks and initialisations. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-24io_uring: indent left {send,recv}[msg]()Pavel Begunkov
Flip over "if (sock)" condition with return on error, the upper layer will take care. That change will be handy later, but already removes an extra jump from hot path. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-24io_uring: simplify file ref tracking in submission statePavel Begunkov
Currently, file refs in struct io_submit_state are tracked with 2 vars: @has_refs -- how many refs were initially taken @used_refs -- number of refs used Replace it with a single variable counting how many refs left at the current moment. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-24io_uring/io-wq: move RLIMIT_FSIZE to io-wqPavel Begunkov
RLIMIT_SIZE in needed only for execution from an io-wq context, hence move all preparations from hot path to io-wq work setup. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-24io_uring: alloc ->io in io_req_defer_prep()Pavel Begunkov
Every call to io_req_defer_prep() is prepended with allocating ->io, just do that in the function. And while we're at it, mark error paths with unlikey and replace "if (ret < 0)" with "if (ret)". There is only one change in the observable behaviour, that's instead of killing the head request right away on error, it postpones it until the link is assembled, that looks more preferable. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-24io_uring: remove empty cleanup of OP_OPEN* reqsPavel Begunkov
A switch in __io_clean_op() doesn't have default, it's pointless to list opcodes that doesn't do any cleanup. Remove IORING_OP_OPEN* from there. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-24io_uring: inline io_req_work_grab_env()Pavel Begunkov
The only caller of io_req_work_grab_env() is io_prep_async_work(), and they are both initialising req->work. Inline grab_env(), it's easier to keep this way, moreover there already were bugs with misplacing io_req_init_async(). Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-24io_uring: place cflags into completion dataPavel Begunkov
req->cflags is used only for defer-completion path, just use completion data to store it. With the 4 bytes from the ->sequence patch and compacting io_kiocb, this frees 8 bytes. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-24io_uring: remove sequence from io_kiocbPavel Begunkov
req->sequence is used only for deferred (i.e. DRAIN) requests, but initialised for every request. Remove req->sequence from io_kiocb together with its initialisation in io_init_req(). Replace it with a new field in struct io_defer_entry, that will be calculated only when needed in io_req_defer(), which is a slow path. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-24io_uring: use non-intrusive list for deferPavel Begunkov
The only left user of req->list is DRAIN, hence instead of keeping a separate per request list for it, do that with old fashion non-intrusive lists allocated on demand. That's a really slow path, so that's OK. This removes req->list and so sheds 16 bytes from io_kiocb. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-24io_uring: remove init for unused listPavel Begunkov
poll*() doesn't use req->list, don't init it. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-24io_uring: add req->timeout.listPavel Begunkov
Instead of using shared req->list, hang timeouts up on their own list entry. struct io_timeout have enough extra space for it, but if that will be a problem ->inflight_entry can reused for that. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-24io_uring: use completion list for CQ overflowPavel Begunkov
As with the completion path, also use compl.list for overflowed requests. If cleaned up properly, nobody needs per-op data there anymore. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-24io_uring: use inflight_entry list for iopoll'ingPavel Begunkov
req->inflight_entry is used to track requests that grabbed files_struct. Let's share it with iopoll list, because the only iopoll'ed ops are reads and writes, which don't need a file table. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-24io_uring: rename ctx->poll into ctx->iopollPavel Begunkov
It supports both polling and I/O polling. Rename ctx->poll to clearly show that it's only in I/O poll case. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-24io_uring: share completion list w/ per-op spacePavel Begunkov
Calling io_req_complete(req) means that the request is done, and there is nothing left but to clean it up. That also means that per-op data after that should not be used, so we're free to reuse it in completion path, e.g. to store overflow_list as done in this patch. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-24io_uring: follow **iovec idiom in io_import_iovecPavel Begunkov
As for import_iovec(), return !=NULL iovec from io_import_iovec() only when it should be freed. That includes returning NULL when iovec is already in req->io, because it should be deallocated by other means, e.g. inside op handler. After io_setup_async_rw() local iovec to ->io, just mark it NULL, to follow the idea in io_{read,write} as well. That's easier to follow, and especially useful if we want to reuse per-op space for completion data. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> [axboe: only call kfree() on non-NULL pointer] Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-24io_uring: add a helper for async rw iovec prepPavel Begunkov
Preparing reads/writes for async is a bit tricky. Extract a helper to not repeat it twice. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-24io_uring: simplify io_req_map_rw()Pavel Begunkov
Don't deref req->io->rw every time, but put it in a local variable. This looks prettier, generates less instructions, and doesn't break alias analysis. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-24io_uring: replace rw->task_work with rq->task_workPavel Begunkov
io_kiocb::task_work was de-unionised, and is not planned to be shared back, because it's too useful and commonly used. Hence, instead of keeping a separate task_work in struct io_async_rw just reuse req->task_work. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-24io_uring: extract io_sendmsg_copy_hdr()Pavel Begunkov
Don't repeat send msg initialisation code, it's error prone. Extract and use a helper function. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-24io_uring: use more specific type in rcv/snd msg cpPavel Begunkov
send/recv msghdr initialisation works with struct io_async_msghdr, but pulls the whole struct io_async_ctx for no reason. That complicates it with composite accessing, e.g. io->msg. Use and pass the most specific type, which is struct io_async_msghdr. It is the larget field in union io_async_ctx and doesn't save stack space, but looks clearer. The most of the changes are replacing "io->msg." with "iomsg->" Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-24io_uring: rename sr->msg into umsgPavel Begunkov
Every second field in send/recv is called msg, make it a bit more understandable by renaming ->msg, which is a user provided ptr, to ->umsg. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-24io_uring: fix sq array offset calculationDmitry Vyukov
rings_size() sets sq_offset to the total size of the rings (the returned value which is used for memory allocation). This is wrong: sq array should be located within the rings, not after them. Set sq_offset to where it should be. Fixes: 75b28affdd6a ("io_uring: allocate the two rings together") Signed-off-by: Dmitry Vyukov <dvyukov@google.com> Acked-by: Hristo Venev <hristo@venev.name> Cc: io-uring@vger.kernel.org Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-24Merge branch 'io_uring-5.8' into for-5.9/io_uringJens Axboe
Merge in io_uring-5.8 fixes, as changes/cleanups to how we do locked mem accounting require a fixup, and only one of the spots are noticed by git as the other merges cleanly. The flags fix from io_uring-5.8 also causes a merge conflict, the leak fix for recvmsg, the double poll fix, and the link failure locking fix. * io_uring-5.8: io_uring: fix lockup in io_fail_links() io_uring: fix ->work corruption with poll_add io_uring: missed req_init_async() for IOSQE_ASYNC io_uring: always allow drain/link/hardlink/async sqe flags io_uring: ensure double poll additions work with both request types io_uring: fix recvmsg memory leak with buffer selection io_uring: fix not initialised work->flags io_uring: fix missing msg_name assignment io_uring: account user memory freed when exit has been queued io_uring: fix memleak in io_sqe_files_register() io_uring: fix memleak in __io_sqe_files_update() io_uring: export cq overflow status to userspace Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-24io_uring: fix lockup in io_fail_links()Pavel Begunkov
io_fail_links() doesn't consider REQ_F_COMP_LOCKED leading to nested spin_lock(completion_lock) and lockup. [ 197.680409] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 6-... } 18239 jiffies s: 1421 root: 0x40/. [ 197.680411] rcu: blocking rcu_node structures: [ 197.680412] Task dump for CPU 6: [ 197.680413] link-timeout R running task 0 1669 1 0x8000008a [ 197.680414] Call Trace: [ 197.680420] ? io_req_find_next+0xa0/0x200 [ 197.680422] ? io_put_req_find_next+0x2a/0x50 [ 197.680423] ? io_poll_task_func+0xcf/0x140 [ 197.680425] ? task_work_run+0x67/0xa0 [ 197.680426] ? do_exit+0x35d/0xb70 [ 197.680429] ? syscall_trace_enter+0x187/0x2c0 [ 197.680430] ? do_group_exit+0x43/0xa0 [ 197.680448] ? __x64_sys_exit_group+0x18/0x20 [ 197.680450] ? do_syscall_64+0x52/0xa0 [ 197.680452] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-24io_uring: fix ->work corruption with poll_addPavel Begunkov
req->work might be already initialised by the time it gets into __io_arm_poll_handler(), which will corrupt it by using fields that are in an union with req->work. Luckily, the only side effect is missing put_creds(). Clean req->work before going there. Suggested-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-07-24arm64: enable time namespace supportAndrei Vagin
CONFIG_TIME_NS is dependes on GENERIC_VDSO_TIME_NS. Signed-off-by: Andrei Vagin <avagin@gmail.com> Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Reviewed-by: Dmitry Safonov <dima@arista.com> Link: https://lore.kernel.org/r/20200624083321.144975-7-avagin@gmail.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2020-07-24arm64/vdso: Restrict splitting VVAR VMAAndrei Vagin
Forbid splitting VVAR VMA resulting in a stricter ABI and reducing the amount of corner-cases to consider while working further on VDSO time namespace support. As the offset from timens to VVAR page is computed compile-time, the pages in VVAR should stay together and not being partically mremap()'ed. Signed-off-by: Andrei Vagin <avagin@gmail.com> Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Reviewed-by: Dmitry Safonov <dima@arista.com> Link: https://lore.kernel.org/r/20200624083321.144975-6-avagin@gmail.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2020-07-24arm64/vdso: Handle faults on timens pageAndrei Vagin
If a task belongs to a time namespace then the VVAR page which contains the system wide VDSO data is replaced with a namespace specific page which has the same layout as the VVAR page. Signed-off-by: Andrei Vagin <avagin@gmail.com> Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Reviewed-by: Dmitry Safonov <dima@arista.com> Link: https://lore.kernel.org/r/20200624083321.144975-5-avagin@gmail.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2020-07-24ALSA: hda/realtek: typo_fix: enable headset mic of ASUS ROG Zephyrus ↵Armas Spann
G14(GA401) series with ALC289 This patch fixes a small typo I accidently submitted with the initial patch. The board should be named GA401 not G401. Fixes: ff53664daff2 ("ALSA: hda/realtek: enable headset mic of ASUS ROG Zephyrus G14(G401) series with ALC289") Signed-off-by: Armas Spann <zappel@retarded.farm> Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20200724140837.302763-1-zappel@retarded.farm Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-07-24ALSA: hda/realtek: enable headset mic of ASUS ROG Zephyrus G15(GA502) series ↵Armas Spann
with ALC289 This patch adds support for headset mic to the ASUS ROG Zephyrus G15(GA502) notebook series by adding the corresponding vendor/pci_device id, as well as adding a new fixup for the used realtek ALC289. The fixup stets the correct pin to get the headset mic correctly recognized on audio-jack. Signed-off-by: Armas Spann <zappel@retarded.farm> Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20200724140616.298892-1-zappel@retarded.farm Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-07-24x86/build: Move max-page-size option to LDFLAGS_vmlinuxArvind Sankar
This option is only required for vmlinux on 64-bit, to enforce 2MiB alignment, so set it in LDFLAGS_vmlinux instead of KBUILD_LDFLAGS. Also drop the ld-option check: this option was added in binutils-2.18 and all the other places that use it already don't have the check. This reduces the size of the intermediate ELF files arch/x86/boot/setup.elf and arch/x86/realmode/rm/realmode.elf by about 2MiB each. The binary versions are unchanged. Move the LDFLAGS settings to all be together and just after CFLAGS settings are done. Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu> Signed-off-by: Ingo Molnar <mingo@kernel.org> Tested-by: Sedat Dilek <sedat.dilek@gmail.com> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Michal Marek <michal.lkml@markovi.net> Link: https://lore.kernel.org/r/20200722184334.3785418-1-nivedita@alum.mit.edu
2020-07-24Merge tag 'mvebu-fixes-5.8-1' of ↵Arnd Bergmann
git://git.kernel.org/pub/scm/linux/kernel/git/gclement/mvebu into arm/fixes mvebu fixes for 5.8 (part 1) - DT change for Armada 38x allowing to add the register needed to fix NETA lockup when repeatedly switching speed. * tag 'mvebu-fixes-5.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/gclement/mvebu: ARM: dts: armada-38x: fix NETA lockup when repeatedly switching speeds
2020-07-24Merge tag 'ti-k3-config-for-v5.9' of ↵Arnd Bergmann
git://git.kernel.org/pub/scm/linux/kernel/git/kristo/linux into arm/defconfig Texas Instruments K3 SoC config updates for v5.9 - Enable chipid driver for j721e/am65x - Enable SDHCI driver for am65x * tag 'ti-k3-config-for-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/kristo/linux: arm64: defconfig: Enable AM654x SDHCI controller arm64: arch_k3: enable chipid driver Link: https://lore.kernel.org/r/c3e68831-c9ec-db06-d855-808ba3da3364@ti.com Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2020-07-24Merge tag 'mvebu-dt64-5.9-1' of ↵Arnd Bergmann
git://git.kernel.org/pub/scm/linux/kernel/git/gclement/mvebu into arm/dt mvebu dt64 for 5.9 (part 1) Add SMMU support for the Marvell AP806 based SoCs (Armada 70xx and Armada 80xx) * tag 'mvebu-dt64-5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/gclement/mvebu: arm64: dts: marvell: add SMMU support
2020-07-24Merge tag 'mvebu-dt-5.9-1' of ↵Arnd Bergmann
git://git.kernel.org/pub/scm/linux/kernel/git/gclement/mvebu into arm/dt mvebu dt for 5.9 (part 1) - Fix the reg-init PHY for the dlink-dns327l (Armada 370) - Replace HTTP links with HTTPS one in device tree of the Excito Bubba B3 (Kirkwood) * tag 'mvebu-dt-5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/gclement/mvebu: ARM: dts: dlink-dns327l: fix reg-init PHY ARM: dts: kirkwood: Replace HTTP links with HTTPS ones Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2020-07-24Merge tag 'ti-k3-dt-for-v5.9' of ↵Arnd Bergmann
git://git.kernel.org/pub/scm/linux/kernel/git/kristo/linux into arm/dt Texas Instruments K3 SoC DT updates for v5.9 - Add platforms chipid nodes for am65x and j721e - Update latest data sheet values for MMC on am65x - Add serdes and usb3 support for j721e - Add analog audio support for j721e - Add SD card support for am65x - Rename DT nodes for gic-its/smmu to their standard counterparts am65x/j721e - HTTP links replaced with HTTPS ones * tag 'ti-k3-dt-for-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/kristo/linux: arm64: dts: k3-j721e-proc-board: Add wait time for sampling Type-C DIR line arm64: dts: ti: k3-j721e: Enable Super-Speed support for USB0 arm64: dts: ti: k3-j721e-main.dtsi: Add USB to SERDES MUX arm64: dts: ti: k3-j721e-main: Add system controller node and SERDES lane mux arm64: dts: ti: k3-j721e-main: Add WIZ and SERDES PHY nodes dt-bindings: mfd: ti,j721e-system-controller.yaml: Add J721e system controller arm64: dts: ti: k3-am65/j721e-main: rename gic-its node to msi-controller arm64: dts: ti: k3-j721e-main: rename smmu node to iommu arm64: dts: ti: k3-*: Replace HTTP links with HTTPS ones arm64: dts: ti: k3-am654-base-board: Add support for SD card arm64: dts: ti: k3-am65-main: Add support for sdhci1 arm64: dts: ti: j721e-common-proc-board: Analog audio support arm64: dts: ti: k3-j721e-common-proc-board: Remove duplicated main_i2c1_exp4_pins_default arm64: dts: ti: k3-am654-main: Update otap-del-sel values arm64: dts: ti: k3-j721e-mcu-wakeup: add k3 platforms chipid module node arm64: dts: ti: k3-am65-wakeup: add k3 platforms chipid module node Link: https://lore.kernel.org/r/3b3b9214-769d-ba1b-db5e-44414a8c5756@ti.com Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2020-07-24arm64: dts: amazon: add Amazon's Annapurna Labs Alpine v3 supportRonen Krupnik
This patch adds the initial support for the Amazon's Annapurna Labs Alpine v3 Soc and Evaluation Platform (EVP). Link: https://lore.kernel.org/r/20200724132654.16549-7-hhhawa@amazon.com Signed-off-by: Ronen Krupnik <ronenk@amazon.com> Signed-off-by: Talel Shenhar <talel@amazon.com> Signed-off-by: Hanna Hawa <hhhawa@amazon.com> Acked-by: Antoine Tenart <antoine.tenart@bootlin.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2020-07-24dt-bindings: arm: amazon: add Amazon Annapurna Labs Alpine V3Hanna Hawa
This patch adds DT bindings info for Amazon Annapurna Labs Alpine V3. Link: https://lore.kernel.org/r/20200724132654.16549-6-hhhawa@amazon.com Signed-off-by: Hanna Hawa <hhhawa@amazon.com> Reviewed-by: Rob Herring <robh@kernel.org> Acked-by: Antoine Tenart <antoine.tenart@bootlin.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2020-07-24dt-bindings: arm: amazon: add missing alpine-v2 DT bindingHanna Hawa
Amazon Annapurna Labs Alpine family includes: Alpine-v1, Alpine-v2. This patch adds the missing DT binding of Alpine-v2 in amazon,al.yaml. Link: https://lore.kernel.org/r/20200724132654.16549-5-hhhawa@amazon.com Signed-off-by: Hanna Hawa <hhhawa@amazon.com> Reviewed-by: Rob Herring <robh@kernel.org> Acked-by: Antoine Tenart <antoine.tenart@bootlin.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2020-07-24dt-bindings: arm: amazon: update maintainers of amazon,al DT bindingsHanna Hawa
Update maintainers of amazon,al DT bindings. Link: https://lore.kernel.org/r/20200724132654.16549-4-hhhawa@amazon.com Signed-off-by: Hanna Hawa <hhhawa@amazon.com> Acked-by: Rob Herring <robh@kernel.org> Acked-by: Antoine Tenart <antoine.tenart@bootlin.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2020-07-24arm64: dts: amazon: rename al folder to be amazonHanna Hawa
As preparation to add device tree binding for Amazon's Annapurna Labs Alpine v3 support. Rename al device tree folder to be amazon. Link: https://lore.kernel.org/r/20200724132654.16549-3-hhhawa@amazon.com Signed-off-by: Hanna Hawa <hhhawa@amazon.com> Acked-by: Antoine Tenart <antoine.tenart@bootlin.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2020-07-24dt-bindings: arm: amazon: rename al,alpine DT binding to amazon,alHanna Hawa
As preparation to add device tree binding for Amazon's Annapurna Labs Alpine v3 support. Rename al,alpine DT binding to amazon,al. Link: https://lore.kernel.org/r/20200724132654.16549-2-hhhawa@amazon.com Signed-off-by: Hanna Hawa <hhhawa@amazon.com> Acked-by: Rob Herring <robh@kernel.org> Acked-by: Antoine Tenart <antoine.tenart@bootlin.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2020-07-24uprobes: Change handle_swbp() to send SIGTRAP with si_code=SI_KERNEL, to fix ↵Oleg Nesterov
GDB regression If a tracee is uprobed and it hits int3 inserted by debugger, handle_swbp() does send_sig(SIGTRAP, current, 0) which means si_code == SI_USER. This used to work when this code was written, but then GDB started to validate si_code and now it simply can't use breakpoints if the tracee has an active uprobe: # cat test.c void unused_func(void) { } int main(void) { return 0; } # gcc -g test.c -o test # perf probe -x ./test -a unused_func # perf record -e probe_test:unused_func gdb ./test -ex run GNU gdb (GDB) 10.0.50.20200714-git ... Program received signal SIGTRAP, Trace/breakpoint trap. 0x00007ffff7ddf909 in dl_main () from /lib64/ld-linux-x86-64.so.2 (gdb) The tracee hits the internal breakpoint inserted by GDB to monitor shared library events but GDB misinterprets this SIGTRAP and reports a signal. Change handle_swbp() to use force_sig(SIGTRAP), this matches do_int3_user() and fixes the problem. This is the minimal fix for -stable, arch/x86/kernel/uprobes.c is equally wrong; it should use send_sigtrap(TRAP_TRACE) instead of send_sig(SIGTRAP), but this doesn't confuse GDB and needs another x86-specific patch. Reported-by: Aaron Merey <amerey@redhat.com> Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20200723154420.GA32043@redhat.com
2020-07-24x86/defconfigs: Remove CONFIG_CRYPTO_AES_586 from i386_defconfigSedat Dilek
Initially CONFIG_CRYPTO_AES_586=y was added to the i386_defconfig file in: c1b362e3b4d3: ("x86: update defconfigs") The code and Kconfig for CONFIG_CRYPTO_AES_586 was removed in: 1d2c3279311e: ("crypto: x86/aes - drop scalar assembler implementations") Remove the leftover from the i386_defconfig file as well. Signed-off-by: Sedat Dilek <sedat.dilek@gmail.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> Link: https://lore.kernel.org/r/20200723171119.9881-1-sedat.dilek@gmail.com
2020-07-24sched: Warn if garbage is passed to default_wake_function()Chris Wilson
Since the default_wake_function() passes its flags onto try_to_wake_up(), warn if those flags collide with internal values. Given that the supplied flags are garbage, no repair can be done but at least alert the user to the damage they are causing. In the belief that these errors should be picked up during testing, the warning is only compiled in under CONFIG_SCHED_DEBUG. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Ingo Molnar <mingo@kernel.org> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: https://lore.kernel.org/r/20200723201042.18861-1-chris@chris-wilson.co.uk
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