1. 02 Jul, 2018 2 commits
  2. 28 Jun, 2018 6 commits
  3. 27 Jun, 2018 3 commits
  4. 22 Jun, 2018 3 commits
    • Michel Dänzer's avatar
      drm/amdgpu: GPU vs CPU page size fixes in amdgpu_vm_bo_split_mapping · 38e624a1
      Michel Dänzer authored
      start / last / max_entries are numbers of GPU pages, pfn / count are
      numbers of CPU pages. Convert between them accordingly.
      
      Fixes badness on systems with > 4K page size.
      
      Cc: stable@vger.kernel.org
      Bugzilla: https://bugs.freedesktop.org/106258Reported-by: default avatarMatt Corallo <freedesktop@bluematt.me>
      Tested-by: foxbat@ruin.net
      Reviewed-by: default avatarAlex Deucher <alexander.deucher@amd.com>
      Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
      Signed-off-by: default avatarMichel Dänzer <michel.daenzer@amd.com>
      Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
      38e624a1
    • Lyude Paul's avatar
      drm/amdgpu: Count disabled CRTCs in commit tail earlier · fe2a1965
      Lyude Paul authored
      This fixes a regression I accidentally reduced that was picked up by
      kasan, where we were checking the CRTC atomic states after DRM's helpers
      had already freed them. Example:
      
      ==================================================================
      BUG: KASAN: use-after-free in amdgpu_dm_atomic_commit_tail.cold.50+0x13d/0x15a [amdgpu]
      Read of size 1 at addr ffff8803a697b071 by task kworker/u16:0/7
      
      CPU: 7 PID: 7 Comm: kworker/u16:0 Tainted: G           O      4.18.0-rc1Lyude-Upstream+ #1
      Hardware name: HP HP ZBook 15 G4/8275, BIOS P70 Ver. 01.21 05/02/2018
      Workqueue: events_unbound commit_work [drm_kms_helper]
      Call Trace:
       dump_stack+0xc1/0x169
       ? dump_stack_print_info.cold.1+0x42/0x42
       ? kmsg_dump_rewind_nolock+0xd9/0xd9
       ? printk+0x9f/0xc5
       ? amdgpu_dm_atomic_commit_tail.cold.50+0x13d/0x15a [amdgpu]
       print_address_description+0x6c/0x23c
       ? amdgpu_dm_atomic_commit_tail.cold.50+0x13d/0x15a [amdgpu]
       kasan_report.cold.6+0x241/0x2fd
       amdgpu_dm_atomic_commit_tail.cold.50+0x13d/0x15a [amdgpu]
       ? commit_planes_to_stream.constprop.45+0x13b0/0x13b0 [amdgpu]
       ? cpu_load_update_active+0x290/0x290
       ? finish_task_switch+0x2bd/0x840
       ? __switch_to_asm+0x34/0x70
       ? read_word_at_a_time+0xe/0x20
       ? strscpy+0x14b/0x460
       ? drm_atomic_helper_wait_for_dependencies+0x47d/0x7e0 [drm_kms_helper]
       commit_tail+0x96/0xe0 [drm_kms_helper]
       process_one_work+0x88a/0x1360
       ? create_worker+0x540/0x540
       ? __sched_text_start+0x8/0x8
       ? move_queued_task+0x760/0x760
       ? call_rcu_sched+0x20/0x20
       ? vsnprintf+0xcda/0x1350
       ? wait_woken+0x1c0/0x1c0
       ? mutex_unlock+0x1d/0x40
       ? init_timer_key+0x190/0x230
       ? schedule+0xea/0x390
       ? __schedule+0x1ea0/0x1ea0
       ? need_to_create_worker+0xe4/0x210
       ? init_worker_pool+0x700/0x700
       ? try_to_del_timer_sync+0xbf/0x110
       ? del_timer+0x120/0x120
       ? __mutex_lock_slowpath+0x10/0x10
       worker_thread+0x196/0x11f0
       ? flush_rcu_work+0x50/0x50
       ? __switch_to_asm+0x34/0x70
       ? __switch_to_asm+0x34/0x70
       ? __switch_to_asm+0x40/0x70
       ? __switch_to_asm+0x34/0x70
       ? __switch_to_asm+0x40/0x70
       ? __switch_to_asm+0x34/0x70
       ? __switch_to_asm+0x40/0x70
       ? __schedule+0x7d6/0x1ea0
       ? migrate_swap_stop+0x850/0x880
       ? __sched_text_start+0x8/0x8
       ? save_stack+0x8c/0xb0
       ? kasan_kmalloc+0xbf/0xe0
       ? kmem_cache_alloc_trace+0xe4/0x190
       ? kthread+0x98/0x390
       ? ret_from_fork+0x35/0x40
       ? ret_from_fork+0x35/0x40
       ? deactivate_slab.isra.67+0x3c4/0x5c0
       ? kthread+0x98/0x390
       ? kthread+0x98/0x390
       ? set_track+0x76/0x120
       ? schedule+0xea/0x390
       ? __schedule+0x1ea0/0x1ea0
       ? wait_woken+0x1c0/0x1c0
       ? kasan_unpoison_shadow+0x30/0x40
       ? parse_args.cold.15+0x17a/0x17a
       ? flush_rcu_work+0x50/0x50
       kthread+0x2d4/0x390
       ? kthread_create_worker_on_cpu+0xc0/0xc0
       ret_from_fork+0x35/0x40
      
      Allocated by task 1124:
       kasan_kmalloc+0xbf/0xe0
       kmem_cache_alloc_trace+0xe4/0x190
       dm_crtc_duplicate_state+0x78/0x130 [amdgpu]
       drm_atomic_get_crtc_state+0x147/0x410 [drm]
       page_flip_common+0x57/0x230 [drm_kms_helper]
       drm_atomic_helper_page_flip+0xa6/0x110 [drm_kms_helper]
       drm_mode_page_flip_ioctl+0xc4b/0x10a0 [drm]
       drm_ioctl_kernel+0x1d4/0x260 [drm]
       drm_ioctl+0x433/0x920 [drm]
       amdgpu_drm_ioctl+0x11d/0x290 [amdgpu]
       do_vfs_ioctl+0x1a1/0x13d0
       ksys_ioctl+0x60/0x90
       __x64_sys_ioctl+0x6f/0xb0
       do_syscall_64+0x147/0x440
       entry_SYSCALL_64_after_hwframe+0x44/0xa9
      
      Freed by task 1124:
       __kasan_slab_free+0x12e/0x180
       kfree+0x92/0x1a0
       drm_atomic_state_default_clear+0x315/0xc40 [drm]
       __drm_atomic_state_free+0x35/0xd0 [drm]
       drm_atomic_helper_update_plane+0xac/0x350 [drm_kms_helper]
       __setplane_internal+0x2d6/0x840 [drm]
       drm_mode_cursor_universal+0x41e/0xbe0 [drm]
       drm_mode_cursor_common+0x49f/0x880 [drm]
       drm_mode_cursor_ioctl+0xd8/0x130 [drm]
       drm_ioctl_kernel+0x1d4/0x260 [drm]
       drm_ioctl+0x433/0x920 [drm]
       amdgpu_drm_ioctl+0x11d/0x290 [amdgpu]
       do_vfs_ioctl+0x1a1/0x13d0
       ksys_ioctl+0x60/0x90
       __x64_sys_ioctl+0x6f/0xb0
       do_syscall_64+0x147/0x440
       entry_SYSCALL_64_after_hwframe+0x44/0xa9
      
      The buggy address belongs to the object at ffff8803a697b068
       which belongs to the cache kmalloc-1024 of size 1024
      The buggy address is located 9 bytes inside of
       1024-byte region [ffff8803a697b068, ffff8803a697b468)
      The buggy address belongs to the page:
      page:ffffea000e9a5e00 count:1 mapcount:0 mapping:ffff88041e00efc0 index:0x0 compound_mapcount: 0
      flags: 0x8000000000008100(slab|head)
      raw: 8000000000008100 ffffea000ecbc208 ffff88041e000c70 ffff88041e00efc0
      raw: 0000000000000000 0000000000170017 00000001ffffffff 0000000000000000
      page dumped because: kasan: bad access detected
      
      Memory state around the buggy address:
       ffff8803a697af00: fb fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
       ffff8803a697af80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
      >ffff8803a697b000: fc fc fc fc fc fc fc fc fc fc fc fc fc fb fb fb
                                                                   ^
       ffff8803a697b080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
       ffff8803a697b100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
      ==================================================================
      
      So, we fix this by counting the number of CRTCs this atomic commit disabled
      early on in the function before their atomic states have been freed, then use
      that count later to do the appropriate number of RPM puts at the end of the
      function.
      Acked-by: default avatarMichel Dänzer <michel.daenzer@amd.com>
      Reviewed-by: default avatarHarry Wentland <harry.wentland@amd.com>
      Cc: stable@vger.kernel.org
      Fixes: 97028037 ("drm/amdgpu: Grab/put runtime PM references in atomic_commit_tail()")
      Signed-off-by: default avatarLyude Paul <lyude@redhat.com>
      Cc: Michel Dänzer <michel@daenzer.net>
      Reported-by: default avatarMichel Dänzer <michel@daenzer.net>
      Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
      fe2a1965
    • Dave Airlie's avatar
      Merge tag 'drm-misc-fixes-2018-06-21' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes · f3294568
      Dave Airlie authored
      Fixes for v4.18-rc2:
      - A reversion of a commit in drm/sun4i to fix a run-time fault.
      - Various fixes to the sii8620 bridge.
      - Small bugfix to correctly check stride in atmel-hlcdc.
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      Link: https://patchwork.freedesktop.org/patch/msgid/787d4bef-a579-4046-d0fc-f8c2c5b80c25@linux.intel.com
      f3294568
  5. 21 Jun, 2018 3 commits
  6. 20 Jun, 2018 3 commits
  7. 19 Jun, 2018 16 commits
  8. 18 Jun, 2018 1 commit
  9. 17 Jun, 2018 1 commit
  10. 16 Jun, 2018 2 commits
    • Linus Torvalds's avatar
      Linux 4.18-rc1 · ce397d21
      Linus Torvalds authored
      ce397d21
    • Linus Torvalds's avatar
      Merge tag 'for-linus-20180616' of git://git.kernel.dk/linux-block · 265c5596
      Linus Torvalds authored
      Pull block fixes from Jens Axboe:
       "A collection of fixes that should go into -rc1. This contains:
      
         - bsg_open vs bsg_unregister race fix (Anatoliy)
      
         - NVMe pull request from Christoph, with fixes for regressions in
           this window, FC connect/reconnect path code unification, and a
           trace point addition.
      
         - timeout fix (Christoph)
      
         - remove a few unused functions (Christoph)
      
         - blk-mq tag_set reinit fix (Roman)"
      
      * tag 'for-linus-20180616' of git://git.kernel.dk/linux-block:
        bsg: fix race of bsg_open and bsg_unregister
        block: remov blk_queue_invalidate_tags
        nvme-fabrics: fix and refine state checks in __nvmf_check_ready
        nvme-fabrics: handle the admin-only case properly in nvmf_check_ready
        nvme-fabrics: refactor queue ready check
        blk-mq: remove blk_mq_tagset_iter
        nvme: remove nvme_reinit_tagset
        nvme-fc: fix nulling of queue data on reconnect
        nvme-fc: remove reinit_request routine
        blk-mq: don't time out requests again that are in the timeout handler
        nvme-fc: change controllers first connect to use reconnect path
        nvme: don't rely on the changed namespace list log
        nvmet: free smart-log buffer after use
        nvme-rdma: fix error flow during mapping request data
        nvme: add bio remapping tracepoint
        nvme: fix NULL pointer dereference in nvme_init_subsystem
        blk-mq: reinit q->tag_set_list entry only after grace period
      265c5596