1. 18 Aug, 2020 32 commits
  2. 16 Aug, 2020 6 commits
    • Linus Torvalds's avatar
      Linux 5.9-rc1 · 9123e3a7
      Linus Torvalds authored
      9123e3a7
    • Linus Torvalds's avatar
      Merge tag 'io_uring-5.9-2020-08-15' of git://git.kernel.dk/linux-block · 2cc3c4b3
      Linus Torvalds authored
      Pull io_uring fixes from Jens Axboe:
       "A few differerent things in here.
      
        Seems like syzbot got some more io_uring bits wired up, and we got a
        handful of reports and the associated fixes are in here.
      
        General fixes too, and a lot of them marked for stable.
      
        Lastly, a bit of fallout from the async buffered reads, where we now
        more easily trigger short reads. Some applications don't really like
        that, so the io_read() code now handles short reads internally, and
        got a cleanup along the way so that it's now easier to read (and
        documented). We're now passing tests that failed before"
      
      * tag 'io_uring-5.9-2020-08-15' of git://git.kernel.dk/linux-block:
        io_uring: short circuit -EAGAIN for blocking read attempt
        io_uring: sanitize double poll handling
        io_uring: internally retry short reads
        io_uring: retain iov_iter state over io_read/io_write calls
        task_work: only grab task signal lock when needed
        io_uring: enable lookup of links holding inflight files
        io_uring: fail poll arm on queue proc failure
        io_uring: hold 'ctx' reference around task_work queue + execute
        fs: RWF_NOWAIT should imply IOCB_NOIO
        io_uring: defer file table grabbing request cleanup for locked requests
        io_uring: add missing REQ_F_COMP_LOCKED for nested requests
        io_uring: fix recursive completion locking on oveflow flush
        io_uring: use TWA_SIGNAL for task_work uncondtionally
        io_uring: account locked memory before potential error case
        io_uring: set ctx sq/cq entry count earlier
        io_uring: Fix NULL pointer dereference in loop_rw_iter()
        io_uring: add comments on how the async buffered read retry works
        io_uring: io_async_buf_func() need not test page bit
      2cc3c4b3
    • Mike Rapoport's avatar
      parisc: fix PMD pages allocation by restoring pmd_alloc_one() · 6f6aea7e
      Mike Rapoport authored
      Commit 1355c31e ("asm-generic: pgalloc: provide generic pmd_alloc_one()
      and pmd_free_one()") converted parisc to use generic version of
      pmd_alloc_one() but it missed the fact that parisc uses order-1 pages for
      PMD.
      
      Restore the original version of pmd_alloc_one() for parisc, just use
      GFP_PGTABLE_KERNEL that implies __GFP_ZERO instead of GFP_KERNEL and
      memset.
      
      Fixes: 1355c31e ("asm-generic: pgalloc: provide generic pmd_alloc_one() and pmd_free_one()")
      Reported-by: default avatarMeelis Roos <mroos@linux.ee>
      Signed-off-by: default avatarMike Rapoport <rppt@linux.ibm.com>
      Tested-by: default avatarMeelis Roos <mroos@linux.ee>
      Reviewed-by: default avatarMatthew Wilcox (Oracle) <willy@infradead.org>
      Link: https://lkml.kernel.org/r/9f2b5ebd-e4a4-0fa1-6cd3-4b9f6892d1ad@linux.eeSigned-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      6f6aea7e
    • Linus Torvalds's avatar
      Merge tag 'block-5.9-2020-08-14' of git://git.kernel.dk/linux-block · 4b6c093e
      Linus Torvalds authored
      Pull block fixes from Jens Axboe:
       "A few fixes on the block side of things:
      
         - Discard granularity fix (Coly)
      
         - rnbd cleanups (Guoqing)
      
         - md error handling fix (Dan)
      
         - md sysfs fix (Junxiao)
      
         - Fix flush request accounting, which caused an IO slowdown for some
           configurations (Ming)
      
         - Properly propagate loop flag for partition scanning (Lennart)"
      
      * tag 'block-5.9-2020-08-14' of git://git.kernel.dk/linux-block:
        block: fix double account of flush request's driver tag
        loop: unset GENHD_FL_NO_PART_SCAN on LOOP_CONFIGURE
        rnbd: no need to set bi_end_io in rnbd_bio_map_kern
        rnbd: remove rnbd_dev_submit_io
        md-cluster: Fix potential error pointer dereference in resize_bitmaps()
        block: check queue's limits.discard_granularity in __blkdev_issue_discard()
        md: get sysfs entry after redundancy attr group create
      4b6c093e
    • Linus Torvalds's avatar
      Merge tag 'riscv-for-linus-5.9-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux · d84835b1
      Linus Torvalds authored
      Pull RISC-V fix from Palmer Dabbelt:
       "I collected a single fix during the merge window: we managed to break
        the early trap setup on !MMU, this fixes it"
      
      * tag 'riscv-for-linus-5.9-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
        riscv: Setup exception vector for nommu platform
      d84835b1
    • Linus Torvalds's avatar
      Merge tag 'sh-for-5.9' of git://git.libc.org/linux-sh · 5bbec3cf
      Linus Torvalds authored
      Pull arch/sh updates from Rich Felker:
       "Cleanup, SECCOMP_FILTER support, message printing fixes, and other
        changes to arch/sh"
      
      * tag 'sh-for-5.9' of git://git.libc.org/linux-sh: (34 commits)
        sh: landisk: Add missing initialization of sh_io_port_base
        sh: bring syscall_set_return_value in line with other architectures
        sh: Add SECCOMP_FILTER
        sh: Rearrange blocks in entry-common.S
        sh: switch to copy_thread_tls()
        sh: use the generic dma coherent remap allocator
        sh: don't allow non-coherent DMA for NOMMU
        dma-mapping: consolidate the NO_DMA definition in kernel/dma/Kconfig
        sh: unexport register_trapped_io and match_trapped_io_handler
        sh: don't include <asm/io_trapped.h> in <asm/io.h>
        sh: move the ioremap implementation out of line
        sh: move ioremap_fixed details out of <asm/io.h>
        sh: remove __KERNEL__ ifdefs from non-UAPI headers
        sh: sort the selects for SUPERH alphabetically
        sh: remove -Werror from Makefiles
        sh: Replace HTTP links with HTTPS ones
        arch/sh/configs: remove obsolete CONFIG_SOC_CAMERA*
        sh: stacktrace: Remove stacktrace_ops.stack()
        sh: machvec: Modernize printing of kernel messages
        sh: pci: Modernize printing of kernel messages
        ...
      5bbec3cf
  3. 15 Aug, 2020 2 commits
    • Jens Axboe's avatar
      io_uring: short circuit -EAGAIN for blocking read attempt · f91daf56
      Jens Axboe authored
      One case was missed in the short IO retry handling, and that's hitting
      -EAGAIN on a blocking attempt read (eg from io-wq context). This is a
      problem on sockets that are marked as non-blocking when created, they
      don't carry any REQ_F_NOWAIT information to help us terminate them
      instead of perpetually retrying.
      
      Fixes: 227c0c96 ("io_uring: internally retry short reads")
      Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
      f91daf56
    • Jens Axboe's avatar
      io_uring: sanitize double poll handling · d4e7cd36
      Jens Axboe authored
      There's a bit of confusion on the matching pairs of poll vs double poll,
      depending on if the request is a pure poll (IORING_OP_POLL_ADD) or
      poll driven retry.
      
      Add io_poll_get_double() that returns the double poll waitqueue, if any,
      and io_poll_get_single() that returns the original poll waitqueue. With
      that, remove the argument to io_poll_remove_double().
      
      Finally ensure that wait->private is cleared once the double poll handler
      has run, so that remove knows it's already been seen.
      
      Cc: stable@vger.kernel.org # v5.8
      Reported-by: syzbot+7f617d4a9369028b8a2c@syzkaller.appspotmail.com
      Fixes: 18bceab1 ("io_uring: allow POLL_ADD with double poll_wait() users")
      Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
      d4e7cd36