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authorAndrey Ryabinin <aryabinin@virtuozzo.com>2019-12-18 05:51:38 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2019-12-18 05:59:59 +0100
commitd98c9e83b5e7ca78175df1b13ac4a6d460d3962d (patch)
treed978ad6db67a7bc39ac92ef36e8b22b06a4e13eb /arch/arm/mach-davinci
parentMerge tag 'for-5.5-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/... (diff)
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kasan: fix crashes on access to memory mapped by vm_map_ram()
With CONFIG_KASAN_VMALLOC=y any use of memory obtained via vm_map_ram() will crash because there is no shadow backing that memory. Instead of sprinkling additional kasan_populate_vmalloc() calls all over the vmalloc code, move it into alloc_vmap_area(). This will fix vm_map_ram() and simplify the code a bit. [aryabinin@virtuozzo.com: v2] Link: http://lkml.kernel.org/r/20191205095942.1761-1-aryabinin@virtuozzo.comLink: http://lkml.kernel.org/r/20191204204534.32202-1-aryabinin@virtuozzo.com Fixes: 3c5c3cfb9ef4 ("kasan: support backing vmalloc space with real shadow memory") Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Reported-by: Dmitry Vyukov <dvyukov@google.com> Reviewed-by: Uladzislau Rezki (Sony) <urezki@gmail.com> Cc: Daniel Axtens <dja@axtens.net> Cc: Alexander Potapenko <glider@google.com> Cc: Daniel Axtens <dja@axtens.net> Cc: Qian Cai <cai@lca.pw> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/arm/mach-davinci')
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