tree: git://anongit.freedesktop.org/drm/drm-tip drm-tip head: f99065c68952afc90504325a19125d95e6b84abc commit: a4e7ccdac38ec8335d9e4e2656c1a041c77feae1 [548/565] drm/i915: Move context management under GEM reproduce: # apt-get install sparse # sparse version: v0.6.1-rc1-42-g38eda53-dirty git checkout a4e7ccdac38ec8335d9e4e2656c1a041c77feae1 make ARCH=x86_64 allmodconfig make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'

If you fix the issue, kindly add following tag Reported-by: kbuild test robot lkp@intel.com

sparse warnings: (new ones prefixed by >>)

...

drivers/gpu/drm/i915/gem/i915_gem_context.c:813:29: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct i915_address_space *vm @@ got struct i915_addresstruct i915_address_space *vm @@ drivers/gpu/drm/i915/gem/i915_gem_context.c:813:29: sparse: expected struct i915_address_space *vm drivers/gpu/drm/i915/gem/i915_gem_context.c:813:29: sparse: got struct i915_address_space [noderef] asn:4 *vm

drivers/gpu/drm/i915/gem/i915_gem_context.c:1748:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct i915_gem_engines *e @@ got struct i915_gem_enstruct i915_gem_engines *e @@ drivers/gpu/drm/i915/gem/i915_gem_context.c:1748:25: sparse: expected struct i915_gem_engines *e drivers/gpu/drm/i915/gem/i915_gem_context.c:1748:25: sparse: got struct i915_gem_engines [noderef] asn:4 *engines drivers/gpu/drm/i915/gem/i915_gem_context.c:1783:15: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct i915_gem_engines *clone @@ got struct i915_gem_enstruct i915_gem_engines *clone @@ drivers/gpu/drm/i915/gem/i915_gem_context.c:1783:15: sparse: expected struct i915_gem_engines *clone drivers/gpu/drm/i915/gem/i915_gem_context.c:1783:15: sparse: got struct i915_gem_engines [noderef] asn:4 *engines

...

drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c:773:51: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected struct i915_address_space *[assigned] vm @@ got struct struct i915_address_space *[assigned] vm @@ drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c:773:51: sparse: expected struct i915_address_space *[assigned] vm drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c:773:51: sparse: got struct i915_address_space [noderef] asn:4 *vm drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c:780:64: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct i915_address_space *vm @@ got struct i915_addresstruct i915_address_space *vm @@ drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c:780:64: sparse: expected struct i915_address_space *vm

drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c:780:64: sparse: got struct i915_address_space [noderef] asn:4 *vm

...

drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c:1694:25: sparse: sparse: dereference of noderef expression

vim +813 drivers/gpu/drm/i915/gem/i915_gem_context.c

85fddf0b002719 drivers/gpu/drm/i915/i915_gem_context.c Chris Wilson 2019-03-09 801 cde5f7edd511b1 drivers/gpu/drm/i915/i915_gem_context.c Chris Wilson 2019-03-30 802 static int get_ppgtt(struct drm_i915_file_private *file_priv, cde5f7edd511b1 drivers/gpu/drm/i915/i915_gem_context.c Chris Wilson 2019-03-30 803 struct i915_gem_context *ctx, e0695db7298ec2 drivers/gpu/drm/i915/i915_gem_context.c Chris Wilson 2019-03-22 804 struct drm_i915_gem_context_param *args) e0695db7298ec2 drivers/gpu/drm/i915/i915_gem_context.c Chris Wilson 2019-03-22 805 { e568ac3874be7d drivers/gpu/drm/i915/gem/i915_gem_context.c Chris Wilson 2019-06-11 806 struct i915_address_space *vm; e0695db7298ec2 drivers/gpu/drm/i915/i915_gem_context.c Chris Wilson 2019-03-22 807 int ret; e0695db7298ec2 drivers/gpu/drm/i915/i915_gem_context.c Chris Wilson 2019-03-22 808 a4e7ccdac38ec8 drivers/gpu/drm/i915/gem/i915_gem_context.c Chris Wilson 2019-10-04 809 if (!rcu_access_pointer(ctx->vm)) e0695db7298ec2 drivers/gpu/drm/i915/i915_gem_context.c Chris Wilson 2019-03-22 810 return -ENODEV; e0695db7298ec2 drivers/gpu/drm/i915/i915_gem_context.c Chris Wilson 2019-03-22 811 a4e7ccdac38ec8 drivers/gpu/drm/i915/gem/i915_gem_context.c Chris Wilson 2019-10-04 812 rcu_read_lock(); e568ac3874be7d drivers/gpu/drm/i915/gem/i915_gem_context.c Chris Wilson 2019-06-11 @813 vm = i915_vm_get(ctx->vm); a4e7ccdac38ec8 drivers/gpu/drm/i915/gem/i915_gem_context.c Chris Wilson 2019-10-04 814 rcu_read_unlock(); e0695db7298ec2 drivers/gpu/drm/i915/i915_gem_context.c Chris Wilson 2019-03-22 815 e0695db7298ec2 drivers/gpu/drm/i915/i915_gem_context.c Chris Wilson 2019-03-22 816 ret = mutex_lock_interruptible(&file_priv->vm_idr_lock); e0695db7298ec2 drivers/gpu/drm/i915/i915_gem_context.c Chris Wilson 2019-03-22 817 if (ret) e0695db7298ec2 drivers/gpu/drm/i915/i915_gem_context.c Chris Wilson 2019-03-22 818 goto err_put; e0695db7298ec2 drivers/gpu/drm/i915/i915_gem_context.c Chris Wilson 2019-03-22 819 e568ac3874be7d drivers/gpu/drm/i915/gem/i915_gem_context.c Chris Wilson 2019-06-11 820 ret = idr_alloc(&file_priv->vm_idr, vm, 0, 0, GFP_KERNEL); e0695db7298ec2 drivers/gpu/drm/i915/i915_gem_context.c Chris Wilson 2019-03-22 821 GEM_BUG_ON(!ret); e0695db7298ec2 drivers/gpu/drm/i915/i915_gem_context.c Chris Wilson 2019-03-22 822 if (ret < 0) e0695db7298ec2 drivers/gpu/drm/i915/i915_gem_context.c Chris Wilson 2019-03-22 823 goto err_unlock; e0695db7298ec2 drivers/gpu/drm/i915/i915_gem_context.c Chris Wilson 2019-03-22 824 2850748ef8763a drivers/gpu/drm/i915/gem/i915_gem_context.c Chris Wilson 2019-10-04 825 i915_vm_open(vm); e0695db7298ec2 drivers/gpu/drm/i915/i915_gem_context.c Chris Wilson 2019-03-22 826 e0695db7298ec2 drivers/gpu/drm/i915/i915_gem_context.c Chris Wilson 2019-03-22 827 args->size = 0; 1f2b4a7edbc3b8 drivers/gpu/drm/i915/i915_gem_context.c Chris Wilson 2019-04-25 828 args->value = ret; e0695db7298ec2 drivers/gpu/drm/i915/i915_gem_context.c Chris Wilson 2019-03-22 829 e0695db7298ec2 drivers/gpu/drm/i915/i915_gem_context.c Chris Wilson 2019-03-22 830 ret = 0; e0695db7298ec2 drivers/gpu/drm/i915/i915_gem_context.c Chris Wilson 2019-03-22 831 err_unlock: e0695db7298ec2 drivers/gpu/drm/i915/i915_gem_context.c Chris Wilson 2019-03-22 832 mutex_unlock(&file_priv->vm_idr_lock); e0695db7298ec2 drivers/gpu/drm/i915/i915_gem_context.c Chris Wilson 2019-03-22 833 err_put: e568ac3874be7d drivers/gpu/drm/i915/gem/i915_gem_context.c Chris Wilson 2019-06-11 834 i915_vm_put(vm); e0695db7298ec2 drivers/gpu/drm/i915/i915_gem_context.c Chris Wilson 2019-03-22 835 return ret; e0695db7298ec2 drivers/gpu/drm/i915/i915_gem_context.c Chris Wilson 2019-03-22 836 } e0695db7298ec2 drivers/gpu/drm/i915/i915_gem_context.c Chris Wilson 2019-03-22 837

:::::: The code at line 813 was first introduced by commit :::::: e568ac3874be7dcef3da0cc3bd6b91ca9dd14aa0 drm/i915: Pull kref into i915_address_space

:::::: TO: Chris Wilson chris@chris-wilson.co.uk :::::: CC: Chris Wilson chris@chris-wilson.co.uk

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