linux_dsm_epyc7002/drivers/s390
Julian Wiedmann 9a764c1e59 s390/qeth: fix length check in SNMP processing
The response for a SNMP request can consist of multiple parts, which
the cmd callback stages into a kernel buffer until all parts have been
received. If the callback detects that the staging buffer provides
insufficient space, it bails out with error.
This processing is buggy for the first part of the response - while it
initially checks for a length of 'data_len', it later copies an
additional amount of 'offsetof(struct qeth_snmp_cmd, data)' bytes.

Fix the calculation of 'data_len' for the first part of the response.
This also nicely cleans up the memcpy code.

Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-11-28 11:16:54 -08:00
..
block s390 updates for the 4.20 merge window 2018-10-23 11:14:47 +01:00
char mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
cio mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
crypto KVM updates for v4.20 2018-10-25 17:57:35 -07:00
net s390/qeth: fix length check in SNMP processing 2018-11-28 11:16:54 -08:00
scsi s390/dasd,zfcp: fix gcc 8 stringop-truncation warnings 2018-07-02 11:24:52 +02:00
virtio mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
Makefile kbuild: rename built-in.o to built-in.a 2018-03-26 02:01:19 +09:00