linux/arch/s390/net
Colin Ian King 9109165625 s390/bpf: Perform r1 range checking before accessing jit->seen_reg[r1]
Currently array jit->seen_reg[r1] is being accessed before the range
checking of index r1. The range changing on r1 should be performed
first since it will avoid any potential out-of-range accesses on the
array seen_reg[] and also it is more optimal to perform checks on r1
before fetching data from the array. Fix this by swapping the order
of the checks before the array access.

Fixes: 0546231057 ("s390/bpf: Add s390x eBPF JIT compiler backend")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Ilya Leoshkevich <iii@linux.ibm.com>
Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Link: https://lore.kernel.org/bpf/20210715125712.24690-1-colin.king@canonical.com
2021-07-15 19:47:25 +02:00
..
bpf_jit_comp.c s390/bpf: Perform r1 range checking before accessing jit->seen_reg[r1] 2021-07-15 19:47:25 +02:00
bpf_jit.h bpf, s390x: remove ld_abs/ld_ind 2018-05-03 16:49:20 -07:00
Makefile Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-06-06 18:39:49 -07:00
pnet.c s390/net: convert pnetids to ascii 2019-02-21 10:34:37 -08:00