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author | Alexei Starovoitov <ast@plumgrid.com> | 2014-11-18 17:32:16 -0800 |
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committer | David S. Miller <davem@davemloft.net> | 2014-11-19 15:40:00 -0500 |
commit | daaf427c6ab392bedcd018e326b2ffa1e1110cd6 (patch) | |
tree | 48b565eb6791a0e49f42dccb6a2873f94492280c /drivers/net | |
parent | fcd4d35ecc1636c8ac50e3a6266a620eb8ff0626 (diff) | |
download | linux-daaf427c6ab392bedcd018e326b2ffa1e1110cd6.tar.bz2 |
bpf: fix arraymap NULL deref and missing overflow and zero size checks
- fix NULL pointer dereference:
kernel/bpf/arraymap.c:41 array_map_alloc() error: potential null dereference 'array'. (kzalloc returns null)
kernel/bpf/arraymap.c:41 array_map_alloc() error: we previously assumed 'array' could be null (see line 40)
- integer overflow check was missing in arraymap
(hashmap checks for overflow via kmalloc_array())
- arraymap can round_up(value_size, 8) to zero. check was missing.
- hashmap was missing zero size check as well, since roundup_pow_of_two() can
truncate into zero
- found a typo in the arraymap comment and unnecessary empty line
Fix all of these issues and make both overflow checks explicit U32 in size.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
0 files changed, 0 insertions, 0 deletions