Gerd Rausch 6f38d95f33 net/rds: dma_map_sg is entitled to merge entries ...

[ Upstream commit fb4b1373dc ]

Function "dma_map_sg" is entitled to merge adjacent entries
and return a value smaller than what was passed as "nents".

Subsequently "ib_map_mr_sg" needs to work with this value ("sg_dma_len")
rather than the original "nents" parameter ("sg_len").

This old RDS bug was exposed and reliably causes kernel panics
(using RDMA operations "rds-stress -D") on x86_64 starting with:
commit c588072bba ("iommu/vt-d: Convert intel iommu driver to the iommu ops")

Simply put: Linux 5.11 and later.

Signed-off-by: Gerd Rausch <gerd.rausch@oracle.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Link: https://lore.kernel.org/r/60efc69f-1f35-529d-a7ef-da0549cad143@oracle.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2021-09-03 10:09:28 +02:00

..

af_rds.c

net: pass a sockptr_t into ->setsockopt

2020-07-24 15:41:54 -07:00

bind.c

net/rds: Check laddr_check before calling it

2019-09-27 12:10:55 +02:00

cong.c

net: rds: delete duplicated words

2020-09-18 14:12:43 -07:00

connection.c

RDS tcp loopback connection can hang

2021-06-16 12:01:36 +02:00

ib_cm.c

RDMA: Add rdma_connect_locked()

2020-10-28 09:14:49 -03:00

ib_frmr.c

net/rds: dma_map_sg is entitled to merge entries

2021-09-03 10:09:28 +02:00

ib_mr.h

RDMA/rds: Remove FMR support for memory registration

2020-06-02 20:32:53 -03:00

ib_rdma.c

RDMA/rds: Remove FMR support for memory registration

2020-06-02 20:32:53 -03:00

ib_recv.c

net/rds: suppress page allocation failure error in recv buffer refill

2020-10-09 12:32:03 -07:00

ib_ring.c

…

ib_send.c

net/rds: Handle ODP mr registration/unregistration

2020-01-18 11:48:19 +02:00

ib_stats.c

net/rds: Fix 'ib_evt_handler_call' element in 'rds_ib_stat_names'

2019-09-15 20:56:19 +02:00

ib_sysctl.c

net: Convert uses of typedef ctl_table to struct ctl_table

2013-06-13 02:36:09 -07:00

ib.c

RDMA: Remove 'max_fmr'

2020-06-02 20:32:54 -03:00

ib.h

RDMA: Lift ibdev_to_node from rds to common code

2021-02-26 10:12:59 +01:00

info.c

rds: fix crash in rds_info_getsockopt()

2020-05-20 14:08:06 -07:00

info.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

Kconfig

treewide: replace '---help---' in Kconfig files with 'help'

2020-06-14 01:57:21 +09:00

loop.c

rds: Changing IP address internal representation to struct in6_addr

2018-07-23 21:17:44 -07:00

loop.h

rds: clean up loopback rds_connections on netns deletion

2018-06-27 10:11:03 +09:00

Makefile

RDMA/rds: Remove FMR support for memory registration

2020-06-02 20:32:53 -03:00

message.c

net/rds: Fix a use after free in rds_message_map_pages

2021-04-14 08:42:09 +02:00

page.c

rds: remove dead code

2016-12-26 21:35:39 -05:00

rdma_transport.c

net: rds: add service level support in rds-info

2019-08-24 16:55:25 -07:00

rdma_transport.h

net: rds: rdma_transport.h: delete duplicated word

2020-07-19 18:14:51 -07:00

rdma.c

net/rds: restrict iovecs length for RDS_CMSG_RDMA_ARGS

2021-02-17 11:02:30 +01:00

rds_single_path.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

rds.h

net: pass a sockptr_t into ->setsockopt

2020-07-24 15:41:54 -07:00

recv.c

net: rds: fix memory leak in rds_recvmsg

2021-06-23 14:42:42 +02:00

send.c

treewide: Use fallthrough pseudo-keyword

2020-08-23 17:36:59 -05:00

stats.c

rds: check for excessive looping in rds_send_xmit

2019-08-15 12:04:24 -07:00

sysctl.c

net: rds: fix coding style issues

2016-06-18 21:34:09 -07:00

tcp_connect.c

net: add sock_no_linger

2020-05-28 11:11:44 -07:00

tcp_listen.c

RDS tcp loopback connection can hang

2021-06-16 12:01:36 +02:00

tcp_recv.c

rds: Changing IP address internal representation to struct in6_addr

2018-07-23 21:17:44 -07:00

tcp_send.c

tcp: add tcp_sock_set_cork

2020-05-28 11:11:45 -07:00

tcp_stats.c

net: rds: fix const array syntax

2011-07-01 16:16:19 -07:00

tcp.c

RDS tcp loopback connection can hang

2021-06-16 12:01:36 +02:00

tcp.h

RDS tcp loopback connection can hang

2021-06-16 12:01:36 +02:00

threads.c

rds: make v3.1 as compat version

2019-02-04 14:59:11 -08:00

transport.c

rds: transport module should be auto loaded when transport is set

2020-06-25 16:26:25 -07:00