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Julian Wiedmann f677fcb9ae s390/qeth: ensure linear access to packet headers 
When the RX path builds non-linear skbs, the packet headers can
currently spill over into page fragments. Depending on the packet type
and what fields we need to access in the headers, this could cause us
to go past the end of skb->data.

So for non-linear packets, copy precisely the length of the necessary
headers ('linear_len') into skb->data.
And don't copy more, upper-level protocols will peel whatever additional
packet headers they need.

Fixes: 4a71df5004 ("qeth: new qeth device driver")
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2019-12-05 12:25:05 -08:00
..
Kconfig s390/Kconfig: pedantic cleanups 2019-06-04 15:03:46 +02:00
Makefile s390/qeth: move ethtool code into its own file 2019-02-15 20:35:29 -08:00
ctcm_dbug.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ctcm_dbug.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ctcm_fsms.c s390/ctcm: don't use intparm for channel IO 2019-08-20 13:51:46 -07:00
ctcm_fsms.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ctcm_main.c s390/ctcm: Delete unnecessary checks before the macro call “dev_kfree_skb” 2019-09-16 21:45:32 +02:00
ctcm_main.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ctcm_mpc.c s390/ctcm: don't use intparm for channel IO 2019-08-20 13:51:46 -07:00
ctcm_mpc.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ctcm_sysfs.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fsm.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2017-11-30 08:13:36 -08:00
fsm.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ism.h net/smc: immediate termination for SMCD link groups 2019-11-15 12:28:28 -08:00
ism_drv.c s390/ism: move oddities of device IO to wrapper function 2019-04-29 10:47:01 +02:00
lcs.c s390/lcs: don't use intparm for channel IO 2019-08-20 13:51:46 -07:00
lcs.h net: convert lcs_reply.refcnt from atomic_t to refcount_t 2017-12-20 15:23:44 -05:00
netiucv.c s390: drivers: Remove redundant license text 2017-11-24 14:28:47 +01:00
qeth_core.h s390/qeth: guard against runt packets 2019-12-05 12:25:05 -08:00
qeth_core_main.c s390/qeth: ensure linear access to packet headers 2019-12-05 12:25:05 -08:00
qeth_core_mpc.c s390/qeth: allow cmd callbacks to return errnos 2019-02-12 13:14:24 -05:00
qeth_core_mpc.h s390/qeth: support per-frame invalidation 2019-11-14 18:16:50 -08:00
qeth_core_sys.c s390/qeth: don't check drvdata in sysfs code 2019-11-14 18:16:51 -08:00
qeth_ethtool.c s390/qeth: guard against runt packets 2019-12-05 12:25:05 -08:00
qeth_l2.h s390/qeth: clean up exported symbols 2018-07-12 16:42:39 -07:00
qeth_l2_main.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2019-11-22 16:27:24 -08:00
qeth_l2_sys.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2019-11-22 16:27:24 -08:00
qeth_l3.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 2019-11-25 20:02:57 -08:00
qeth_l3_main.c s390/qeth: replace qeth_l3_get_addr_buffer() 2019-11-14 18:16:51 -08:00
qeth_l3_sys.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 2019-11-25 20:02:57 -08:00
smsgiucv.c s390/smsgiucv: disable SMSG on module unload 2018-04-16 09:10:17 +02:00
smsgiucv.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
smsgiucv_app.c s390: net: add SPDX identifiers to the remaining files 2017-11-24 14:28:43 +01:00