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authorBruno Prémont <bonbons@linux-vserver.org>2009-01-04 13:11:54 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-04 13:33:20 -0800
commite687d691cb3790d25e31c74f5941fd7c565e9df5 (patch)
treed606511c734e99fb6e4786d20ab42a8cf1b2232f /fs/namei.c
parentc644f0e4b56f9a2fc066cd0d75a18074d130e4a3 (diff)
viafb: fix crashes due to 4k stack overflow
The function viafb_cursor() uses 2 stack-variables of CURSOR_SIZE bits; CURSOR_SIZE is defined as (8 * 1024). Using up twice 1k on stack is too much for 4k-stack (though it works with 8k-stacks). Make those two variables kzalloc'ed to preserve stack space. Also merge the whole lot of local struct's in viafb_ioctl into a union so the stack usage gets minimized here as well. (struct's are only accessed in their indicidual IOCTL case) This second part is only compile-tested as I know of no userspace app using the IOCTLs. Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org> Cc: <JosephChan@via.com.tw> Cc: Krzysztof Helt <krzysztof.h1@poczta.fm> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/namei.c')
0 files changed, 0 insertions, 0 deletions