idriskalp
30 lines
1.3 KiB
Diff
Executable File
30 lines
1.3 KiB
Diff
Executable File
Author: Andreas Beckmann <anbe@debian.org>
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Description: use kmem_cache_create_usercopy on 4.16+
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fixes "Bad or missing usercopy whitelist? Kernel memory exposure attempt
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detected from SLUB object 'nvidia_stack_cache'" on linux-image-4.16.0-2-*
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or newer that have disabled CONFIG_HARDENED_USERCOPY_FALLBACK
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Bug-Debian: #901919, #899998
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Bug: https://devtalk.nvidia.com/default/topic/1031067
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--- a/kernel/nv-linux.h
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+++ b/kernel/nv-linux.h
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@@ -757,11 +757,18 @@ extern nv_spinlock_t km_lock;
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0, 0, NULL, NULL); \
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}
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#elif (NV_KMEM_CACHE_CREATE_ARGUMENT_COUNT == 5)
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+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 16, 0)
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+#define NV_KMEM_CACHE_CREATE(kmem_cache, name, type) \
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+ { \
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+ kmem_cache = kmem_cache_create_usercopy(name, sizeof(type), 0, 0, 0, sizeof(type), NULL); \
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+ }
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+#else
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#define NV_KMEM_CACHE_CREATE(kmem_cache, name, type) \
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{ \
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kmem_cache = kmem_cache_create(name, sizeof(type), \
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0, 0, NULL); \
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}
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+#endif
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#else
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#error "NV_KMEM_CACHE_CREATE_ARGUMENT_COUNT value unrecognized!"
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#endif
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