1. 14 Mar, 2019 3 commits
  2. 12 Mar, 2019 3 commits
  3. 11 Mar, 2019 3 commits
  4. 08 Mar, 2019 7 commits
    • Tvrtko Ursulin's avatar
      drm/i915: Relax mmap VMA check · ca22f32a
      Tvrtko Ursulin authored
      Legacy behaviour was to allow non-page-aligned mmap requests, as does the
      linux mmap(2) implementation by virtue of automatically rounding up for
      the caller.
      
      To avoid breaking legacy userspace relax the newly introduced fix.
      Signed-off-by: default avatarTvrtko Ursulin <tvrtko.ursulin@intel.com>
      Fixes: 5c4604e7 ("drm/i915: Prevent a race during I915_GEM_MMAP ioctl with WC set")
      Reported-by: default avatarGuenter Roeck <linux@roeck-us.net>
      Cc: Adam Zabrocki <adamza@microsoft.com>
      Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
      Cc: <stable@vger.kernel.org> # v4.0+
      Cc: Akash Goel <akash.goel@intel.com>
      Cc: Chris Wilson <chris@chris-wilson.co.uk>
      Cc: Jani Nikula <jani.nikula@linux.intel.com>
      Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
      Cc: intel-gfx@lists.freedesktop.org
      Reviewed-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
      Link: https://patchwork.freedesktop.org/patch/msgid/20190305110409.28633-1-tvrtko.ursulin@linux.intel.com
      (cherry picked from commit a90e1948)
      Signed-off-by: default avatarRodrigo Vivi <rodrigo.vivi@intel.com>
      ca22f32a
    • José Roberto de Souza's avatar
      drm/i915: Fix atomic state leak when resetting HDMI link · c8c16f59
      José Roberto de Souza authored
      Atomic state needs to be put even if the commit was successful.
      
      Fixes: dba14b27 ("drm/i915: Reinitialize sink scrambling/TMDS clock ratio on HPD")
      Reviewed-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
      Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
      Cc: Lyude Paul <lyude@redhat.com>
      Signed-off-by: default avatarJosé Roberto de Souza <jose.souza@intel.com>
      Link: https://patchwork.freedesktop.org/patch/msgid/20190302003349.19189-1-jose.souza@intel.com
      (cherry picked from commit a551cd66)
      Signed-off-by: default avatarRodrigo Vivi <rodrigo.vivi@intel.com>
      c8c16f59
    • Chris Wilson's avatar
      drm/i915: Acquire breadcrumb ref before cancelling · a89c0962
      Chris Wilson authored
      We may race the interrupt signaling with retirement, in which case the
      order in which we acquire the reference inside the interrupt is vital to
      provide the correct barrier against the request being freed in
      retirement, i.e. we need to acquire our reference before marking the
      breadcrumb as cancelled (as soon as the breadcrumb is cancelled
      retirement may drop its reference to the request without serialisation
      with the interrupt handler).
      
      <3>[  683.372226] BUG i915_request (Tainted: G     U           ): Object already free
      <3>[  683.372269] -----------------------------------------------------------------------------
      
      <4>[  683.372323] Disabling lock debugging due to kernel taint
      <3>[  683.372393] INFO: Allocated in i915_request_alloc+0x169/0x810 [i915] age=0 cpu=2 pid=1420
      <3>[  683.372412] 	kmem_cache_alloc+0x21c/0x280
      <3>[  683.372478] 	i915_request_alloc+0x169/0x810 [i915]
      <3>[  683.372540] 	i915_gem_do_execbuffer+0x84e/0x1ae0 [i915]
      <3>[  683.372603] 	i915_gem_execbuffer2_ioctl+0x11b/0x420 [i915]
      <3>[  683.372617] 	drm_ioctl_kernel+0x83/0xf0
      <3>[  683.372626] 	drm_ioctl+0x2f3/0x3b0
      <3>[  683.372636] 	do_vfs_ioctl+0xa0/0x6e0
      <3>[  683.372645] 	ksys_ioctl+0x35/0x60
      <3>[  683.372654] 	__x64_sys_ioctl+0x11/0x20
      <3>[  683.372664] 	do_syscall_64+0x55/0x190
      <3>[  683.372675] 	entry_SYSCALL_64_after_hwframe+0x49/0xbe
      <3>[  683.372740] INFO: Freed in i915_request_retire_upto+0xfb/0x2e0 [i915] age=0 cpu=0 pid=1419
      <3>[  683.372807] 	i915_request_retire_upto+0xfb/0x2e0 [i915]
      <3>[  683.372870] 	i915_request_add+0x3bd/0x9d0 [i915]
      <3>[  683.372931] 	i915_gem_do_execbuffer+0x141c/0x1ae0 [i915]
      <3>[  683.372991] 	i915_gem_execbuffer2_ioctl+0x11b/0x420 [i915]
      <3>[  683.373001] 	drm_ioctl_kernel+0x83/0xf0
      <3>[  683.373008] 	drm_ioctl+0x2f3/0x3b0
      <3>[  683.373015] 	do_vfs_ioctl+0xa0/0x6e0
      <3>[  683.373023] 	ksys_ioctl+0x35/0x60
      <3>[  683.373030] 	__x64_sys_ioctl+0x11/0x20
      <3>[  683.373037] 	do_syscall_64+0x55/0x190
      <3>[  683.373045] 	entry_SYSCALL_64_after_hwframe+0x49/0xbe
      <3>[  683.373054] INFO: Slab 0x0000000079bcdd71 objects=30 used=2 fp=0x000000006d77b8af flags=0x8000000000010201
      <3>[  683.373069] INFO: Object 0x000000006d77b8af @offset=24000 fp=0x000000007b061eab
      
      <3>[  683.373083] Redzone 00000000ee47ef28: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb  ................
      <3>[  683.373097] Redzone 000000000cb91471: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb  ................
      <3>[  683.373111] Redzone 00000000cf2b86ee: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb  ................
      <3>[  683.373125] Redzone 00000000f1f5a2cd: bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb bb  ................
      <3>[  683.373139] Object 000000006d77b8af: 00 00 00 00 5a 5a 5a 5a 00 3c 49 c0 ff ff ff ff  ....ZZZZ.<I.....
      <3>[  683.373153] Object 000000006f9b6204: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
      <3>[  683.373167] Object 0000000091410ffb: e0 dd 6b fa 87 9f ff ff e0 dd 6b fa 87 9f ff ff  ..k.......k.....
      <3>[  683.373181] Object 000000004cdf799d: 20 de 6b fa 87 9f ff ff 3d 00 00 00 00 00 00 00   .k.....=.......
      <3>[  683.373195] Object 00000000545afebc: aa b3 00 00 00 00 00 00 0f 00 00 00 00 00 00 00  ................
      <3>[  683.373209] Object 00000000e4a394a8: 25 bd bd 1b 9f 00 00 00 00 00 00 00 5a 5a 5a 5a  %...........ZZZZ
      <3>[  683.373223] Object 0000000029a7878a: 00 00 00 00 ad 4e ad de ff ff ff ff 5a 5a 5a 5a  .....N......ZZZZ
      <3>[  683.373237] Object 00000000d37797b3: ff ff ff ff ff ff ff ff e8 6e 57 c0 ff ff ff ff  .........nW.....
      <3>[  683.373251] Object 00000000d50414f6: 00 b3 c8 8e ff ff ff ff 80 b0 c8 8e ff ff ff ff  ................
      <3>[  683.373265] Object 00000000c28e8847: 41 01 4b c0 ff ff ff ff 00 00 88 8e 88 9f ff ff  A.K.............
      <3>[  683.373279] Object 00000000c74212ab: 38 c1 6d 8a 88 9f ff ff 58 21 74 8a 88 9f ff ff  8.m.....X!t.....
      <3>[  683.373293] Object 000000000d8012cf: c0 c1 6d 8a 88 9f ff ff 58 79 dd d9 87 9f ff ff  ..m.....Xy......
      <3>[  683.373306] Object 00000000c9900b91: 98 d0 4e 8a 88 9f ff ff 58 3c e8 9b 88 9f ff ff  ..N.....X<......
      <3>[  683.373320] Object 0000000044bb8c3d: 58 3c e8 9b 88 9f ff ff 64 f5 04 00 00 00 00 00  X<......d.......
      <3>[  683.373334] Object 00000000180c4cca: 00 00 00 00 ad 4e ad de ff ff ff ff 5a 5a 5a 5a  .....N......ZZZZ
      <3>[  683.373348] Object 00000000c9044498: ff ff ff ff ff ff ff ff e0 6e 57 c0 ff ff ff ff  .........nW.....
      <3>[  683.373362] Object 0000000072d0dfb3: 00 00 00 00 00 00 00 00 c0 b1 c8 8e ff ff ff ff  ................
      <3>[  683.373376] Object 0000000081f198b9: 55 01 4b c0 ff ff ff ff d8 de 6b fa 87 9f ff ff  U.K.......k.....
      <3>[  683.373390] Object 000000006a375a13: d8 de 6b fa 87 9f ff ff cc 05 39 c0 ff ff ff ff  ..k.......9.....
      <3>[  683.373404] Object 00000000b8392dd1: ff ff ff ff 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ....ZZZZZZZZZZZZ
      <3>[  683.373418] Object 00000000e5c1bbcb: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
      <3>[  683.373432] Object 00000000199feccd: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
      <3>[  683.373446] Object 0000000020f5e08b: 20 df 6b fa 87 9f ff ff 20 df 6b fa 87 9f ff ff   .k..... .k.....
      <3>[  683.373460] Object 0000000090591b0f: 30 df 6b fa 87 9f ff ff 30 df 6b fa 87 9f ff ff  0.k.....0.k.....
      <3>[  683.373473] Object 00000000232f7cd0: 40 df 6b fa 87 9f ff ff 40 df 6b fa 87 9f ff ff  @.k.....@.k.....
      <3>[  683.373487] Object 0000000060458027: 50 df 6b fa 87 9f ff ff 50 df 6b fa 87 9f ff ff  P.k.....P.k.....
      <3>[  683.373501] Object 00000000e3c82ce2: 06 00 00 00 00 00 00 00 5a 5a 5a 5a 5a 5a 5a 5a  ........ZZZZZZZZ
      <3>[  683.373515] Object 00000000ec804eb8: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
      <3>[  683.373529] Object 00000000ce7ccc08: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
      <3>[  683.373543] Object 000000002dbc575c: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
      <3>[  683.373557] Object 00000000b86d3417: 5a 5a 5a 5a 5a 5a 5a 5a 00 de 6b fa 87 9f ff ff  ZZZZZZZZ..k.....
      <3>[  683.373571] Object 00000000d1e82276: b8 61 dd d9 87 9f ff ff a0 06 00 00 d0 06 00 00  .a..............
      <3>[  683.373585] Object 00000000cc53f969: e8 06 00 00 20 07 00 00 28 07 00 00 00 00 00 00  .... ...(.......
      <3>[  683.373599] Object 00000000ea2426d2: 40 0c 8c 7b 88 9f ff ff 00 00 00 00 00 00 00 00  @..{............
      <3>[  683.373613] Object 00000000b860c1c3: 68 0d 8c 7b 88 9f ff ff 68 25 8c 7b 88 9f ff ff  h..{....h%.{....
      <3>[  683.373627] Object 0000000016455ea0: 96 d5 05 00 01 00 00 00 00 5a 5a 5a 5a 5a 5a 5a  .........ZZZZZZZ
      <3>[  683.373640] Object 00000000e66ede82: 00 e0 6b fa 87 9f ff ff 00 e0 6b fa 87 9f ff ff  ..k.......k.....
      <3>[  683.373654] Object 0000000080964939: 10 e0 6b fa 87 9f ff ff 10 e0 6b fa 87 9f ff ff  ..k.......k.....
      <3>[  683.373668] Object 00000000e7ffc5dd: 00 00 00 00 00 00 00 00 00 01 00 00 00 00 ad de  ................
      <3>[  683.373682] Object 000000000ce9d6ca: 00 02 00 00 00 00 ad de 5a 5a 5a 5a 5a 5a 5a 5a  ........ZZZZZZZZ
      <3>[  683.373696] Object 00000000386659d0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
      <3>[  683.373710] Redzone 0000000075d2069d: bb bb bb bb bb bb bb bb                          ........
      <3>[  683.373723] Padding 0000000054e14c6b: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
      <3>[  683.373737] Padding 00000000425e5b34: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
      <3>[  683.373751] Padding 00000000ad3d4db9: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
      <4>[  683.373767] CPU: 1 PID: 151 Comm: kworker/1:2 Tainted: G    BU            5.0.0-rc8-g39139489403b-drmtip_236+ #1
      <4>[  683.373769] Hardware name: Intel Corporation Ice Lake Client Platform/IceLake Y LPDDR4x T4 RVP TLC, BIOS ICLSFWR1.R00.3087.A00.1902250334 02/25/2019
      <4>[  683.373773] Workqueue: events delayed_fput
      <4>[  683.373775] Call Trace:
      <4>[  683.373777]  <IRQ>
      <4>[  683.373781]  dump_stack+0x67/0x9b
      <4>[  683.373783]  free_debug_processing+0x344/0x370
      <4>[  683.373832]  ? intel_engine_breadcrumbs_irq+0x2e4/0x380 [i915]
      <4>[  683.373836]  __slab_free+0x337/0x4f0
      <4>[  683.373840]  ? _raw_spin_unlock_irqrestore+0x39/0x60
      <4>[  683.373844]  ? debug_check_no_obj_freed+0x132/0x210
      <4>[  683.373889]  ? intel_engine_breadcrumbs_irq+0x2e4/0x380 [i915]
      <4>[  683.373892]  ? kmem_cache_free+0x275/0x2e0
      <4>[  683.373894]  kmem_cache_free+0x275/0x2e0
      <4>[  683.373939]  intel_engine_breadcrumbs_irq+0x2e4/0x380 [i915]
      <4>[  683.373984]  gen8_cs_irq_handler+0x4e/0xa0 [i915]
      <4>[  683.374026]  gen11_irq_handler+0x24b/0x330 [i915]
      <4>[  683.374032]  __handle_irq_event_percpu+0x41/0x2d0
      <4>[  683.374034]  ? handle_irq_event+0x27/0x50
      <4>[  683.374038]  handle_irq_event_percpu+0x2b/0x70
      <4>[  683.374040]  handle_irq_event+0x2f/0x50
      <4>[  683.374044]  handle_edge_irq+0xe7/0x190
      <4>[  683.374048]  handle_irq+0x67/0x160
      <4>[  683.374051]  do_IRQ+0x5e/0x130
      <4>[  683.374054]  common_interrupt+0xf/0xf
      
      Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=109827
      Fixes: 52c0fdb2 ("drm/i915: Replace global breadcrumbs with per-context interrupt tracking")
      Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
      Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
      Reviewed-by: default avatarTvrtko Ursulin <tvrtko.ursulin@intel.com>
      Link: https://patchwork.freedesktop.org/patch/msgid/20190304114113.371-1-chris@chris-wilson.co.uk
      (cherry picked from commit e781a7a3)
      Signed-off-by: default avatarRodrigo Vivi <rodrigo.vivi@intel.com>
      a89c0962
    • Chris Wilson's avatar
      drm/i915/selftests: Always free spinner on __sseu_prepare error · 339cc6ae
      Chris Wilson authored
      Prepare a nice little onion unwind to ensure that we always free the
      spinner if we __sseu_prepare fails.
      
      Fixes: c06ee6ff ("drm/i915/selftests: Context SSEU reconfiguration tests")
      Reported-by: default avatarRadhakrishna Sripada <radhakrishna.sripada@intel.com>
      Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
      Cc: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
      Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
      Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
      Link: https://patchwork.freedesktop.org/patch/msgid/20190215195010.16637-1-chris@chris-wilson.co.ukReviewed-by: default avatarRadhakrishna Sripada <radhakrishna.sripada@intel.com>
      (cherry picked from commit 2a4a2754)
      Signed-off-by: default avatarRodrigo Vivi <rodrigo.vivi@intel.com>
      339cc6ae
    • Chris Wilson's avatar
      drm/i915: Reacquire priolist cache after dropping the engine lock · 7b1366b4
      Chris Wilson authored
      If we drop the engine lock, we may run execlists_dequeue which may free
      the priolist. Therefore if we ever drop the execution lock on the
      engine, we have to discard our cache and refetch the priolist to ensure
      we do not use a stale pointer.
      
      [  506.418935] [IGT] gem_exec_whisper: starting subtest contexts-priority
      [  593.240825] general protection fault: 0000 [#1] SMP
      [  593.240863] CPU: 1 PID: 494 Comm: gem_exec_whispe Tainted: G     U            5.0.0-rc6+ #100
      [  593.240879] Hardware name:  /NUC6CAYB, BIOS AYAPLCEL.86A.0029.2016.1124.1625 11/24/2016
      [  593.240965] RIP: 0010:__i915_schedule+0x1fe/0x320 [i915]
      [  593.240981] Code: 48 8b 0c 24 48 89 c3 49 8b 45 28 49 8b 75 20 4c 89 3c 24 48 89 46 08 48 89 30 48 8b 43 08 48 89 4b 08 49 89 5d 20 49 89 45 28 <48> 89 08 45 39 a7 b8 03 00 00 7d 44 45 89 a7 b8 03 00 00 49 8b 85
      [  593.240999] RSP: 0018:ffffc90000057a60 EFLAGS: 00010046
      [  593.241013] RAX: 6b6b6b6b6b6b6b6b RBX: ffff8882582d7870 RCX: ffff88826baba6f0
      [  593.241026] RDX: 0000000000000000 RSI: ffff8882582d6e70 RDI: ffff888273482194
      [  593.241049] RBP: ffffc90000057a68 R08: ffff8882582d7680 R09: ffff8882582d7840
      [  593.241068] R10: 0000000000000000 R11: ffffea00095ebe08 R12: 0000000000000728
      [  593.241105] R13: ffff88826baba6d0 R14: ffffc90000057a40 R15: ffff888273482158
      [  593.241120] FS:  00007f4613fb3900(0000) GS:ffff888277a80000(0000) knlGS:0000000000000000
      [  593.241133] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
      [  593.241146] CR2: 00007f57d3c66a84 CR3: 000000026e2b6000 CR4: 00000000001406e0
      [  593.241158] Call Trace:
      [  593.241233]  i915_schedule+0x1f/0x30 [i915]
      [  593.241326]  i915_request_add+0x1a9/0x290 [i915]
      [  593.241393]  i915_gem_do_execbuffer+0x45f/0x1150 [i915]
      [  593.241411]  ? init_object+0x49/0x80
      [  593.241425]  ? ___slab_alloc.constprop.91+0x4b8/0x4e0
      [  593.241491]  ? i915_gem_execbuffer2_ioctl+0x99/0x380 [i915]
      [  593.241563]  ? i915_gem_execbuffer_ioctl+0x270/0x270 [i915]
      [  593.241629]  i915_gem_execbuffer2_ioctl+0x1bb/0x380 [i915]
      [  593.241705]  ? i915_gem_execbuffer_ioctl+0x270/0x270 [i915]
      [  593.241724]  drm_ioctl_kernel+0x81/0xd0
      [  593.241738]  drm_ioctl+0x1a7/0x310
      [  593.241803]  ? i915_gem_execbuffer_ioctl+0x270/0x270 [i915]
      [  593.241819]  ? __update_load_avg_se+0x1c9/0x240
      [  593.241834]  ? pick_next_entity+0x7e/0x120
      [  593.241851]  do_vfs_ioctl+0x88/0x5d0
      [  593.241880]  ksys_ioctl+0x35/0x70
      [  593.241894]  __x64_sys_ioctl+0x11/0x20
      [  593.241907]  do_syscall_64+0x44/0xf0
      [  593.241924]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
      [  593.241940] RIP: 0033:0x7f4615ffe757
      [  593.241952] Code: 00 00 90 48 8b 05 39 a7 0c 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 09 a7 0c 00 f7 d8 64 89 01 48
      [  593.241970] RSP: 002b:00007ffc1030ddf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
      [  593.241984] RAX: ffffffffffffffda RBX: 00007ffc10324420 RCX: 00007f4615ffe757
      [  593.241997] RDX: 00007ffc1030e220 RSI: 0000000040406469 RDI: 0000000000000003
      [  593.242010] RBP: 00007ffc1030e220 R08: 00007f46160c9208 R09: 00007f46160c9240
      [  593.242022] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000040406469
      [  593.242038] R13: 0000000000000003 R14: 0000000000000000 R15: 0000000000000000
      [  593.242058] Modules linked in: i915 intel_gtt drm_kms_helper prime_numbers
      
      v2: Track the local engine cache and explicitly clear it when switching
      engine locks.
      
      Fixes: a02eb975 ("drm/i915/execlists: Cache the priolist when rescheduling")
      Testcase: igt/gem_exec_whisper/contexts-priority # rare!
      Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
      Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
      Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
      Cc: Michał Winiarski <michal.winiarski@intel.com>
      Reviewed-by: default avatarTvrtko Ursulin <tvrtko.ursulin@intel.com>
      Link: https://patchwork.freedesktop.org/patch/msgid/20190211204647.26723-1-chris@chris-wilson.co.uk
      (cherry picked from commit ed7dc677)
      Signed-off-by: default avatarRodrigo Vivi <rodrigo.vivi@intel.com>
      7b1366b4
    • Chris Wilson's avatar
      drm/i915: Protect i915_active iterators from the shrinker · df069367
      Chris Wilson authored
      If we allocate while iterating the rbtree of active nodes, we may hit
      the shrinker and so retire the i915_active, reaping the rbtree. Modifying
      the rbtree as we iterate is not good behaviour, so acquire the
      i915_active first to keep the tree intact whenever we allocate.
      
      Fixes: a42375af ("drm/i915: Release the active tracker tree upon idling")
      Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
      Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
      Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
      Link: https://patchwork.freedesktop.org/patch/msgid/20190208134704.23039-1-chris@chris-wilson.co.ukReviewed-by: default avatarTvrtko Ursulin <tvrtko.ursulin@intel.com>
      (cherry picked from commit 312c4ba1)
      Signed-off-by: default avatarRodrigo Vivi <rodrigo.vivi@intel.com>
      df069367
    • Ramalingam C's avatar
      drm/i915: HDCP state handling in ddi_update_pipe · 08f68752
      Ramalingam C authored
      The downgrade of the fullmodeset into fastset
      intel_encoder->update_pipe, in possible scenario, skips the En/Dis-able
      DDI. Hence breaks the HDCP state change handling.
      
      We also don't have any hdcp tests in CI, because the shard runs don't
      have hdcp capable outputs :-/
      
      So this change fixs it by handling the HDCP state change request at
      intel_encoder->update_pipe too along with enable and disable of the DDI.
      
      Fixes: d19f958d ("drm/i915: Enable fastset for non-boot modesets.")
      
      v2:
        Added commit id that broke the HDCP [Daniel]
      Signed-off-by: default avatarRamalingam C <ramalingam.c@intel.com>
      cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
      cc: Hans de Goede <hdegoede@redhat.com>
      cc: Daniel Vetter <daniel.vetter@intel.com>
      Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
      Link: https://patchwork.freedesktop.org/patch/msgid/1549295080-18353-1-git-send-email-ramalingam.c@intel.com
      (cherry picked from commit 634852d1)
      Signed-off-by: default avatarRodrigo Vivi <rodrigo.vivi@intel.com>
      08f68752
  5. 07 Mar, 2019 3 commits
  6. 06 Mar, 2019 1 commit
  7. 04 Mar, 2019 4 commits
    • Dave Airlie's avatar
      Merge tag 'drm-misc-fixes-2019-02-22' of git://anongit.freedesktop.org/drm/drm-misc into drm-next · 4b057e73
      Dave Airlie authored
      drm-misc-fixes for v5.0:
      - Block fb changes for async atomic updates to prevent a use after free.
      - Fix ID mismatch error on load in bochs.
      - Fix memory leak when drm_setup fails.
      - Fixes around handling of DRM_AUTH.
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      
      From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
      Link: https://patchwork.freedesktop.org/patch/msgid/42113611-e2cd-6bdd-7de5-4f8ab5a0cbe6@linux.intel.com
      4b057e73
    • Mario Kleiner's avatar
      drm/amd/display: Use vrr friendly pageflip throttling in DC. · 634092b1
      Mario Kleiner authored
      In VRR mode, keep track of the vblank count of the last
      completed pageflip in amdgpu_crtc->last_flip_vblank, as
      recorded in the pageflip completion handler after each
      completed flip.
      
      Use that count to prevent mmio programming a new pageflip
      within the same vblank in which the last pageflip completed,
      iow. to throttle pageflips to at most one flip per video
      frame, while at the same time allowing to request a flip
      not only before start of vblank, but also anywhere within
      vblank.
      
      The old logic did the same, and made sense for regular fixed
      refresh rate flipping, but in vrr mode it prevents requesting
      a flip anywhere inside the possibly huge vblank, thereby
      reducing framerate in vrr mode instead of improving it, by
      delaying a slightly delayed flip requests up to a maximum
      vblank duration + 1 scanout duration. This would limit VRR
      usefulness to only help applications with a very high GPU
      demand, which can submit the flip request before start of
      vblank, but then have to wait long for fences to complete.
      
      With this method a flip can be both requested and - after
      fences have completed - executed, ie. it doesn't matter if
      the request (amdgpu_dm_do_flip()) gets delayed until deep
      into the extended vblank due to cpu execution delays. This
      also allows clients which want to regulate framerate within
      the vrr range a much more fine-grained control of flip timing,
      a feature that might be useful for video playback, and is
      very useful for neuroscience/vision research applications.
      
      In regular non-VRR mode, retain the old flip submission
      behavior. This to keep flip scheduling for fullscreen X11/GLX
      OpenGL clients intact, if they use the GLX_OML_sync_control
      extensions glXSwapBufferMscOML(, ..., target_msc,...) function
      with a specific target_msc target vblank count.
      
      glXSwapBuffersMscOML() or DRI3/Present PresentPixmap() will
      not flip at the proper target_msc for a non-zero target_msc
      if VRR mode is active with this patch. They'd often flip one
      frame too early. However, this limitation should not matter
      much in VRR mode, as scheduling based on vblank counts is
      pretty futile/unusable under variable refresh duration
      anyway, so no real extra harm is done.
      
      According to some testing already done with this patch by
      Nicholas on top of my tests, IGT tests didn't report any
      problems. If fixes stuttering and flickering when flipping
      at rates below the minimum vrr refresh rate.
      
      Fixes: bb47de73 ("drm/amdgpu: Set FreeSync state using drm VRR
      properties")
      Signed-off-by: default avatarMario Kleiner <mario.kleiner.de@gmail.com>
      Cc: <stable@vger.kernel.org>
      Cc: Harry Wentland <harry.wentland@amd.com>
      Cc: Alex Deucher <alexander.deucher@amd.com>
      Cc: Michel Dänzer <michel@daenzer.net>
      Tested-by: default avatarBruno Filipe <bmilreu@gmail.com>
      Reviewed-by: default avatarNicholas Kazlauskas <nicholas.kazlauskas@amd.com>
      Signed-off-by: default avatarNicholas Kazlauskas <nicholas.kazlauskas@amd.com>
      Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      634092b1
    • Ben Dooks's avatar
      drm: add __user attribute to ptr_to_compat() · e552f085
      Ben Dooks authored
      The ptr_to_compat() call takes a "void __user *", so cast
      the compat drm calls that use it to avoid the following
      warnings from sparse:
      
      drivers/gpu/drm/drm_ioc32.c:188:39: warning: incorrect type in argument 1 (different address spaces)
      drivers/gpu/drm/drm_ioc32.c:188:39:    expected void [noderef] <asn:1>*uptr
      drivers/gpu/drm/drm_ioc32.c:188:39:    got void *[addressable] [assigned] handle
      drivers/gpu/drm/drm_ioc32.c:529:41: warning: incorrect type in argument 1 (different address spaces)
      drivers/gpu/drm/drm_ioc32.c:529:41:    expected void [noderef] <asn:1>*uptr
      drivers/gpu/drm/drm_ioc32.c:529:41:    got void *[addressable] [assigned] handle
      
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarBen Dooks <ben.dooks@codethink.co.uk>
      Signed-off-by: default avatarSean Paul <seanpaul@chromium.org>
      Link: https://patchwork.freedesktop.org/patch/msgid/20190301120046.26961-1-ben.dooks@codethink.co.uk
      e552f085
    • Dave Airlie's avatar
      Merge v5.0 into drm-next · 2c3cd66f
      Dave Airlie authored
      There is a really hairy resolution involving amdgpu fixes, that I'd rather confirm here.
      
      Also some misc fixes are landed by me, but the pr has them as well.
      Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
      2c3cd66f
  8. 03 Mar, 2019 2 commits
  9. 02 Mar, 2019 11 commits
    • Linus Torvalds's avatar
      Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip · e7c42a89
      Linus Torvalds authored
      Pull x86 fixes from Thomas Gleixner:
       "Two last minute fixes:
      
         - Prevent value evaluation via functions happening in the user access
           enabled region of __put_user() (put another way: make sure to
           evaluate the value to be stored in user space _before_ enabling
           user space accesses)
      
         - Correct the definition of a Hyper-V hypercall constant"
      
      * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
        x86/hyper-v: Fix definition of HV_MAX_FLUSH_REP_COUNT
        x86/uaccess: Don't leak the AC flag into __put_user() value evaluation
      e7c42a89
    • Linus Torvalds's avatar
      Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi · df49fd0f
      Linus Torvalds authored
      Pull SCSI fixes from James Bottomley:
       "Nine small fixes.
      
        The resume fix is a cosmetic removal of a warning with an incorrect
        condition causing it to alarm people wrongly.
      
        The other eight patches correct a thinko in Christoph Hellwig's DMA
        conversion series. Without it all these drivers end up with 32 bit DMA
        masks meaning they bounce any page over 4GB before sending it to the
        controller.
      
        Nowadays, even laptops mostly have memory above 4GB, so this can lead
        to significant performance degradation with all the bouncing"
      
      * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
        scsi: core: Avoid that system resume triggers a kernel warning
        scsi: hptiop: fix calls to dma_set_mask()
        scsi: hisi_sas: fix calls to dma_set_mask_and_coherent()
        scsi: csiostor: fix calls to dma_set_mask_and_coherent()
        scsi: bfa: fix calls to dma_set_mask_and_coherent()
        scsi: aic94xx: fix calls to dma_set_mask_and_coherent()
        scsi: 3w-sas: fix calls to dma_set_mask_and_coherent()
        scsi: 3w-9xxx: fix calls to dma_set_mask_and_coherent()
        scsi: lpfc: fix calls to dma_set_mask_and_coherent()
      df49fd0f
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · c93d9218
      Linus Torvalds authored
      Pull networking fixes from David Miller:
      
       1) Fix refcount leak in act_ipt during replace, from Davide Caratti.
      
       2) Set task state properly in tun during blocking reads, from Timur
          Celik.
      
       3) Leaked reference in DSA, from Wen Yang.
      
       4) NULL deref in act_tunnel_key, from Vlad Buslov.
      
       5) cipso_v4_erro can reference the skb IPCB in inappropriate contexts
          thus referencing garbage, from Nazarov Sergey.
      
       6) Don't accept RTA_VIA and RTA_GATEWAY in contexts where those
          attributes make no sense.
      
       7) Fix hung sendto in tipc, from Tung Nguyen.
      
       8) Out-of-bounds access in netlabel, from Paul Moore.
      
       9) Grant reference leak in xen-netback, from Igor Druzhinin.
      
      10) Fix tx stalls with lan743x, from Bryan Whitehead.
      
      11) Fix interrupt storm with mv88e6xxx, from Hein Kallweit.
      
      12) Memory leak in sit on device registry failure, from Mao Wenan.
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (44 commits)
        net: sit: fix memory leak in sit_init_net()
        net: dsa: mv88e6xxx: Fix statistics on mv88e6161
        geneve: correctly handle ipv6.disable module parameter
        net: dsa: mv88e6xxx: prevent interrupt storm caused by mv88e6390x_port_set_cmode
        bpf: fix sanitation rewrite in case of non-pointers
        ipv4: Add ICMPv6 support when parse route ipproto
        MIPS: eBPF: Fix icache flush end address
        lan743x: Fix TX Stall Issue
        net: phy: phylink: fix uninitialized variable in phylink_get_mac_state
        net: aquantia: regression on cpus with high cores: set mode with 8 queues
        selftests: fixes for UDP GRO
        bpf: drop refcount if bpf_map_new_fd() fails in map_create()
        net: dsa: mv88e6xxx: power serdes on/off for 10G interfaces on 6390X
        net: dsa: mv88e6xxx: Fix u64 statistics
        xen-netback: don't populate the hash cache on XenBus disconnect
        xen-netback: fix occasional leak of grant ref mappings under memory pressure
        sctp: chunk.c: correct format string for size_t in printk
        net: netem: fix skb length BUG_ON in __skb_to_sgvec
        netlabel: fix out-of-bounds memory accesses
        ipv4: Pass original device to ip_rcv_finish_core
        ...
      c93d9218
    • Linus Torvalds's avatar
      Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 · fa3294c5
      Linus Torvalds authored
      Pull more crypto fixes from Herbert Xu:
       "This fixes a couple of issues in arm64/chacha that was introduced in
        5.0"
      
      * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
        crypto: arm64/chacha - fix hchacha_block_neon() for big endian
        crypto: arm64/chacha - fix chacha_4block_xor_neon() for big endian
      fa3294c5
    • Mao Wenan's avatar
      net: sit: fix memory leak in sit_init_net() · 07f12b26
      Mao Wenan authored
      If register_netdev() is failed to register sitn->fb_tunnel_dev,
      it will go to err_reg_dev and forget to free netdev(sitn->fb_tunnel_dev).
      
      BUG: memory leak
      unreferenced object 0xffff888378daad00 (size 512):
        comm "syz-executor.1", pid 4006, jiffies 4295121142 (age 16.115s)
        hex dump (first 32 bytes):
          00 e6 ed c0 83 88 ff ff 00 00 00 00 00 00 00 00  ................
          00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
      backtrace:
          [<00000000d6dcb63e>] kvmalloc include/linux/mm.h:577 [inline]
          [<00000000d6dcb63e>] kvzalloc include/linux/mm.h:585 [inline]
          [<00000000d6dcb63e>] netif_alloc_netdev_queues net/core/dev.c:8380 [inline]
          [<00000000d6dcb63e>] alloc_netdev_mqs+0x600/0xcc0 net/core/dev.c:8970
          [<00000000867e172f>] sit_init_net+0x295/0xa40 net/ipv6/sit.c:1848
          [<00000000871019fa>] ops_init+0xad/0x3e0 net/core/net_namespace.c:129
          [<00000000319507f6>] setup_net+0x2ba/0x690 net/core/net_namespace.c:314
          [<0000000087db4f96>] copy_net_ns+0x1dc/0x330 net/core/net_namespace.c:437
          [<0000000057efc651>] create_new_namespaces+0x382/0x730 kernel/nsproxy.c:107
          [<00000000676f83de>] copy_namespaces+0x2ed/0x3d0 kernel/nsproxy.c:165
          [<0000000030b74bac>] copy_process.part.27+0x231e/0x6db0 kernel/fork.c:1919
          [<00000000fff78746>] copy_process kernel/fork.c:1713 [inline]
          [<00000000fff78746>] _do_fork+0x1bc/0xe90 kernel/fork.c:2224
          [<000000001c2e0d1c>] do_syscall_64+0xc8/0x580 arch/x86/entry/common.c:290
          [<00000000ec48bd44>] entry_SYSCALL_64_after_hwframe+0x49/0xbe
          [<0000000039acff8a>] 0xffffffffffffffff
      Signed-off-by: default avatarMao Wenan <maowenan@huawei.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      07f12b26
    • Andrew Lunn's avatar
      net: dsa: mv88e6xxx: Fix statistics on mv88e6161 · a6da21bb
      Andrew Lunn authored
      Despite what the datesheet says, the silicon implements the older way
      of snapshoting the statistics. Change the op.
      
      Reported-by: Chris.Healy@zii.aero
      Tested-by: Chris.Healy@zii.aero
      Fixes: 0ac64c39 ("net: dsa: mv88e6xxx: mv88e6161 uses mv88e6320 stats snapshot")
      Signed-off-by: default avatarAndrew Lunn <andrew@lunn.ch>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      a6da21bb
    • Jiri Benc's avatar
      geneve: correctly handle ipv6.disable module parameter · cf1c9ccb
      Jiri Benc authored
      When IPv6 is compiled but disabled at runtime, geneve_sock_add returns
      -EAFNOSUPPORT. For metadata based tunnels, this causes failure of the whole
      operation of bringing up the tunnel.
      
      Ignore failure of IPv6 socket creation for metadata based tunnels caused by
      IPv6 not being available.
      
      This is the same fix as what commit d074bf96 ("vxlan: correctly handle
      ipv6.disable module parameter") is doing for vxlan.
      
      Note there's also commit c0a47e44 ("geneve: should not call rt6_lookup()
      when ipv6 was disabled") which fixes a similar issue but for regular
      tunnels, while this patch is needed for metadata based tunnels.
      Signed-off-by: default avatarJiri Benc <jbenc@redhat.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      cf1c9ccb
    • David S. Miller's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf · f08d6114
      David S. Miller authored
      Alexei Starovoitov says:
      
      ====================
      pull-request: bpf 2019-03-01
      
      The following pull-request contains BPF updates for your *net* tree.
      
      The main changes are:
      
      1) fix sanitation rewrite, from Daniel.
      
      2) fix error path on map_new_fd, from Peng.
      
      3) fix icache flush address, from Paul.
      ====================
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      f08d6114
    • Heiner Kallweit's avatar
      net: dsa: mv88e6xxx: prevent interrupt storm caused by mv88e6390x_port_set_cmode · ed8fe202
      Heiner Kallweit authored
      When debugging another issue I faced an interrupt storm in this
      driver (88E6390, port 9 in SGMII mode), consisting of alternating
      link-up / link-down interrupts. Analysis showed that the driver
      wanted to set a cmode that was set already. But so far
      mv88e6390x_port_set_cmode() doesn't check this and powers down
      SERDES, what causes the link to break, and eventually results in
      the described interrupt storm.
      
      Fix this by checking whether the cmode actually changes. We want
      that the very first call to mv88e6390x_port_set_cmode() always
      configures the registers, therefore initialize port.cmode with
      a value that is different from any supported cmode value.
      We have to take care that we only init the ports cmode once
      chip->info->num_ports is set.
      
      v2:
      - add small helper and init the number of actual ports only
      
      Fixes: 364e9d77 ("net: dsa: mv88e6xxx: Power on/off SERDES on cmode change")
      Signed-off-by: default avatarHeiner Kallweit <hkallweit1@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      ed8fe202
    • Daniel Borkmann's avatar
      bpf: fix sanitation rewrite in case of non-pointers · 3612af78
      Daniel Borkmann authored
      Marek reported that he saw an issue with the below snippet in that
      timing measurements where off when loaded as unpriv while results
      were reasonable when loaded as privileged:
      
          [...]
          uint64_t a = bpf_ktime_get_ns();
          uint64_t b = bpf_ktime_get_ns();
          uint64_t delta = b - a;
          if ((int64_t)delta > 0) {
          [...]
      
      Turns out there is a bug where a corner case is missing in the fix
      d3bd7413 ("bpf: fix sanitation of alu op with pointer / scalar
      type from different paths"), namely fixup_bpf_calls() only checks
      whether aux has a non-zero alu_state, but it also needs to test for
      the case of BPF_ALU_NON_POINTER since in both occasions we need to
      skip the masking rewrite (as there is nothing to mask).
      
      Fixes: d3bd7413 ("bpf: fix sanitation of alu op with pointer / scalar type from different paths")
      Reported-by: default avatarMarek Majkowski <marek@cloudflare.com>
      Reported-by: default avatarArthur Fabre <afabre@cloudflare.com>
      Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
      Link: https://lore.kernel.org/netdev/CAJPywTJqP34cK20iLM5YmUMz9KXQOdu1-+BZrGMAGgLuBWz7fg@mail.gmail.com/T/Acked-by: default avatarSong Liu <songliubraving@fb.com>
      Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
      3612af78
    • Hangbin Liu's avatar
      ipv4: Add ICMPv6 support when parse route ipproto · 5e1a99ea
      Hangbin Liu authored
      For ip rules, we need to use 'ipproto ipv6-icmp' to match ICMPv6 headers.
      But for ip -6 route, currently we only support tcp, udp and icmp.
      
      Add ICMPv6 support so we can match ipv6-icmp rules for route lookup.
      
      v2: As David Ahern and Sabrina Dubroca suggested, Add an argument to
      rtm_getroute_parse_ip_proto() to handle ICMP/ICMPv6 with different family.
      Reported-by: default avatarJianlin Shi <jishi@redhat.com>
      Fixes: eacb9384 ("ipv6: support sport, dport and ip_proto in RTM_GETROUTE")
      Signed-off-by: default avatarHangbin Liu <liuhangbin@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      5e1a99ea
  10. 01 Mar, 2019 3 commits
    • Paul Burton's avatar
      MIPS: eBPF: Fix icache flush end address · d1a2930d
      Paul Burton authored
      The MIPS eBPF JIT calls flush_icache_range() in order to ensure the
      icache observes the code that we just wrote. Unfortunately it gets the
      end address calculation wrong due to some bad pointer arithmetic.
      
      The struct jit_ctx target field is of type pointer to u32, and as such
      adding one to it will increment the address being pointed to by 4 bytes.
      Therefore in order to find the address of the end of the code we simply
      need to add the number of 4 byte instructions emitted, but we mistakenly
      add the number of instructions multiplied by 4. This results in the call
      to flush_icache_range() operating on a memory region 4x larger than
      intended, which is always wasteful and can cause crashes if we overrun
      into an unmapped page.
      
      Fix this by correcting the pointer arithmetic to remove the bogus
      multiplication, and use braces to remove the need for a set of brackets
      whilst also making it obvious that the target field is a pointer.
      Signed-off-by: default avatarPaul Burton <paul.burton@mips.com>
      Fixes: b6bd53f9 ("MIPS: Add missing file for eBPF JIT.")
      Cc: Alexei Starovoitov <ast@kernel.org>
      Cc: Daniel Borkmann <daniel@iogearbox.net>
      Cc: Martin KaFai Lau <kafai@fb.com>
      Cc: Song Liu <songliubraving@fb.com>
      Cc: Yonghong Song <yhs@fb.com>
      Cc: netdev@vger.kernel.org
      Cc: bpf@vger.kernel.org
      Cc: linux-mips@vger.kernel.org
      Cc: stable@vger.kernel.org # v4.13+
      Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
      d1a2930d
    • Bryan Whitehead's avatar
      lan743x: Fix TX Stall Issue · 90490ef7
      Bryan Whitehead authored
      It has been observed that tx queue stalls while downloading
      from certain web sites (example www.speedtest.net)
      
      The cause has been tracked down to a corner case where
      dma descriptors where not setup properly. And there for a tx
      completion interrupt was not signaled.
      
      This fix corrects the problem by properly marking the end of
      a multi descriptor transmission.
      
      Fixes: 23f0703c ("lan743x: Add main source files for new lan743x driver")
      Signed-off-by: default avatarBryan Whitehead <Bryan.Whitehead@microchip.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      90490ef7
    • Heiner Kallweit's avatar
      net: phy: phylink: fix uninitialized variable in phylink_get_mac_state · d25ed413
      Heiner Kallweit authored
      When debugging an issue I found implausible values in state->pause.
      Reason in that state->pause isn't initialized and later only single
      bits are changed. Also the struct itself isn't initialized in
      phylink_resolve(). So better initialize state->pause and other
      not yet initialized fields.
      
      v2:
      - use right function name in subject
      v3:
      - initialize additional fields
      
      Fixes: 9525ae83 ("phylink: add phylink infrastructure")
      Signed-off-by: default avatarHeiner Kallweit <hkallweit1@gmail.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      d25ed413