1. 21 Sep, 2022 34 commits
  2. 16 Sep, 2022 1 commit
  3. 12 Sep, 2022 1 commit
  4. 11 Sep, 2022 1 commit
  5. 09 Sep, 2022 3 commits
    • Xuezhi Zhang's avatar
      comedi: convert sysfs snprintf to sysfs_emit · ceecbbdd
      Xuezhi Zhang authored
      Follow the advice of the Documentation/filesystems/sysfs.rst
      and show() should only use sysfs_emit() or sysfs_emit_at()
      when formatting the value to be returned to user space.
      Signed-off-by: default avatarXuezhi Zhang <zhangxuezhi1@coolpad.com>
      Link: https://lore.kernel.org/r/20220901013423.418464-1-zhangxuezhi3@gmail.comSigned-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      ceecbbdd
    • Shunsuke Mie's avatar
      misc: pci_endpoint_test: Fix pci_endpoint_test_{copy,write,read}() panic · 8e30538e
      Shunsuke Mie authored
      The dma_map_single() doesn't permit zero length mapping. It causes a follow
      panic.
      
      A panic was reported on arm64:
      
      [   60.137988] ------------[ cut here ]------------
      [   60.142630] kernel BUG at kernel/dma/swiotlb.c:624!
      [   60.147508] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP
      [   60.152992] Modules linked in: dw_hdmi_cec crct10dif_ce simple_bridge rcar_fdp1 vsp1 rcar_vin videobuf2_vmalloc rcar_csi2 v4l
      2_mem2mem videobuf2_dma_contig videobuf2_memops pci_endpoint_test videobuf2_v4l2 videobuf2_common rcar_fcp v4l2_fwnode v4l2_asyn
      c videodev mc gpio_bd9571mwv max9611 pwm_rcar ccree at24 authenc libdes phy_rcar_gen3_usb3 usb_dmac display_connector pwm_bl
      [   60.186252] CPU: 0 PID: 508 Comm: pcitest Not tainted 6.0.0-rc1rpci-dev+ #237
      [   60.193387] Hardware name: Renesas Salvator-X 2nd version board based on r8a77951 (DT)
      [   60.201302] pstate: 00000005 (nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
      [   60.208263] pc : swiotlb_tbl_map_single+0x2c0/0x590
      [   60.213149] lr : swiotlb_map+0x88/0x1f0
      [   60.216982] sp : ffff80000a883bc0
      [   60.220292] x29: ffff80000a883bc0 x28: 0000000000000000 x27: 0000000000000000
      [   60.227430] x26: 0000000000000000 x25: ffff0004c0da20d0 x24: ffff80000a1f77c0
      [   60.234567] x23: 0000000000000002 x22: 0001000040000010 x21: 000000007a000000
      [   60.241703] x20: 0000000000200000 x19: 0000000000000000 x18: 0000000000000000
      [   60.248840] x17: 0000000000000000 x16: 0000000000000000 x15: ffff0006ff7b9180
      [   60.255977] x14: ffff0006ff7b9180 x13: 0000000000000000 x12: 0000000000000000
      [   60.263113] x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000
      [   60.270249] x8 : 0001000000000010 x7 : ffff0004c6754b20 x6 : 0000000000000000
      [   60.277385] x5 : ffff0004c0da2090 x4 : 0000000000000000 x3 : 0000000000000001
      [   60.284521] x2 : 0000000040000000 x1 : 0000000000000000 x0 : 0000000040000010
      [   60.291658] Call trace:
      [   60.294100]  swiotlb_tbl_map_single+0x2c0/0x590
      [   60.298629]  swiotlb_map+0x88/0x1f0
      [   60.302115]  dma_map_page_attrs+0x188/0x230
      [   60.306299]  pci_endpoint_test_ioctl+0x5e4/0xd90 [pci_endpoint_test]
      [   60.312660]  __arm64_sys_ioctl+0xa8/0xf0
      [   60.316583]  invoke_syscall+0x44/0x108
      [   60.320334]  el0_svc_common.constprop.0+0xcc/0xf0
      [   60.325038]  do_el0_svc+0x2c/0xb8
      [   60.328351]  el0_svc+0x2c/0x88
      [   60.331406]  el0t_64_sync_handler+0xb8/0xc0
      [   60.335587]  el0t_64_sync+0x18c/0x190
      [   60.339251] Code: 52800013 d2e00414 35fff45c d503201f (d4210000)
      [   60.345344] ---[ end trace 0000000000000000 ]---
      
      To fix it, this patch adds a checking the payload length if it is zero.
      
      Fixes: 343dc693 ("misc: pci_endpoint_test: Prevent some integer overflows")
      Cc: stable <stable@kernel.org>
      Signed-off-by: default avatarShunsuke Mie <mie@igel.co.jp>
      Link: https://lore.kernel.org/r/20220907020100.122588-2-mie@igel.co.jpSigned-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      8e30538e
    • Shunsuke Mie's avatar
      misc: pci_endpoint_test: Aggregate params checking for xfer · 3e42deaa
      Shunsuke Mie authored
      Each transfer test functions have same parameter checking code. This patch
      unites those to an introduced function.
      Signed-off-by: default avatarShunsuke Mie <mie@igel.co.jp>
      Cc: stable <stable@kernel.org>
      Link: https://lore.kernel.org/r/20220907020100.122588-1-mie@igel.co.jpSigned-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      3e42deaa