Ilya Leoshkevich 54ac8339ae s390/bpf: Fix 64-bit subtraction of the -0x80000000 constant ...

commit 6e61dc9da0b7a0d91d57c2e20b5ea4fd2d4e7e53 upstream.

The JIT uses agfi for subtracting constants, but -(-0x80000000) cannot
be represented as a 32-bit signed binary integer. Fix by using algfi in
this particular case.

Reported-by: Johan Almbladh <johan.almbladh@anyfinetworks.com>
Fixes: 054623105728 ("s390/bpf: Add s390x eBPF JIT compiler backend")
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2021-09-22 12:26:46 +02:00

..

bpf_jit_comp.c

s390/bpf: Fix 64-bit subtraction of the -0x80000000 constant

2021-09-22 12:26:46 +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