Alexei Starovoitov 876a7ae65b bpf: fix 64-bit divide ...

ALU64_DIV instruction should be dividing 64-bit by 64-bit,
whereas do_div() does 64-bit by 32-bit divide.
x64 and arm64 JITs correctly implement 64 by 64 unsigned divide.
llvm BPF backend emits code assuming that ALU64_DIV does 64 by 64.

Fixes: 89aa075832b0 ("net: sock: allow eBPF programs to be attached to sockets")
Reported-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2015-04-27 23:11:49 -04:00

..

arraymap.c

ebpf: constify various function pointer structs

2015-03-01 14:05:18 -05:00

core.c

bpf: fix 64-bit divide

2015-04-27 23:11:49 -04:00

hashtab.c

ebpf: constify various function pointer structs

2015-03-01 14:05:18 -05:00

helpers.c

ebpf: add helper for obtaining current processor id

2015-03-15 21:57:25 -04:00

Makefile

ebpf: remove kernel test stubs

2015-03-01 14:05:18 -05:00

syscall.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

2015-04-15 09:00:47 -07:00

verifier.c

bpf: fix two bugs in verification logic when accessing 'ctx' pointer

2015-04-16 14:08:49 -04:00