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v7.1-rc4
linux/net/rds
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Allison Henderson e174929793 net/rds: reset op_nents when zerocopy page pin fails 
When iov_iter_get_pages2() fails in rds_message_zcopy_from_user(),
the pinned pages are released with put_page(), and
rm->data.op_mmp_znotifier is cleared.  But we fail to properly
clear rm->data.op_nents.

Later when rds_message_purge() is called from rds_sendmsg() the
cleanup loop iterates over the incorrectly non zero number of
op_nents and frees them again.

Fix this by properly resetting op_nents when it should be in
rds_message_zcopy_from_user().

Fixes: 0cebaccef3 ("rds: zerocopy Tx support.")
Signed-off-by: Allison Henderson <achender@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20260505234336.2132721-1-achender@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-11 17:20:02 -07:00
..
af_rds.c net/rds: Restrict use of RDS/IB to the initial network namespace 2026-04-12 13:33:19 -07:00
bind.c net: Convert proto_ops bind() callbacks to use sockaddr_unsized 2025-11-04 19:10:32 -08:00
cong.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
connection.c net/rds: zero per-item info buffer before handing it to visitors 2026-04-22 21:05:16 -07:00
ib_cm.c treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
ib_frmr.c rds: ib: Increment i_fastreg_wrs before bailing out 2025-09-15 16:47:53 -07:00
ib_mr.h rds: ib: Remove unused extern definition 2025-09-08 18:16:49 -07:00
ib_rdma.c net/rds: Optimize rds_ib_laddr_check 2026-04-12 13:33:19 -07:00
ib_recv.c net/rds: Add per cp work queue 2026-01-13 12:27:03 +01:00
ib_ring.c rds: Fix spelling mistakes 2021-05-31 22:45:05 -07:00
ib_send.c net/rds: new extension header: rdma bytes 2026-02-04 20:46:38 -08:00
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: rds: Remove the now superfluous sentinel elements from ctl_table array 2024-05-03 13:29:42 +01:00
ib.c net/rds: Restrict use of RDS/IB to the initial network namespace 2026-04-12 13:33:19 -07:00
ib.h net/rds: Optimize rds_ib_laddr_check 2026-04-12 13:33:19 -07:00
info.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
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 net: rds: add option for GCOV profiling 2024-08-09 13:18:46 +01:00
loop.c treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
loop.h rds: clean up loopback rds_connections on netns deletion 2018-06-27 10:11:03 +09:00
Makefile net: rds: add option for GCOV profiling 2024-08-09 13:18:46 +01:00
message.c net/rds: reset op_nents when zerocopy page pin fails 2026-05-11 17:20:02 -07:00
page.c rds: Use nested-BH locking for rds_page_remainder 2025-05-15 15:23:31 +02:00
rdma_transport.c net: rds: Fix possible NULL-pointer dereference 2023-09-20 08:49:03 +01:00
rdma_transport.h net/rds: Remove unused function declarations 2023-08-13 12:25:42 +01:00
rdma.c net: rds: fix MR cleanup on copy error 2026-04-23 12:18:08 -07:00
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/rds: Trigger rds_send_ping() more than once 2026-02-04 20:46:39 -08:00
recv.c net/rds: Trigger rds_send_ping() more than once 2026-02-04 20:46:39 -08:00
send.c rds: update outdated comment 2026-02-25 19:03:55 -08:00
stats.c net/rds: Use the first lane until RDS_EXTHDR_NPATHS arrives 2026-02-04 20:46:39 -08:00
sysctl.c net: rds: Remove the now superfluous sentinel elements from ctl_table array 2024-05-03 13:29:42 +01:00
tcp_connect.c net/rds: rds_tcp_conn_path_shutdown must not discard messages 2026-02-04 20:46:38 -08:00
tcp_listen.c net/rds: fix recursive lock in rds_tcp_conn_slots_available 2026-02-24 10:11:04 +01:00
tcp_recv.c net/rds: rds_tcp_conn_path_shutdown must not discard messages 2026-02-04 20:46:38 -08:00
tcp_send.c net/rds: rds_tcp_conn_path_shutdown must not discard messages 2026-02-04 20:46:38 -08:00
tcp_stats.c net: rds: fix const array syntax 2011-07-01 16:16:19 -07:00
tcp.c net/rds: Fix circular locking dependency in rds_tcp_tune 2026-03-03 12:57:06 +01:00
tcp.h net/rds: Trigger rds_send_ping() more than once 2026-02-04 20:46:39 -08:00
threads.c net/rds: Add per cp work queue 2026-01-13 12:27:03 +01:00
transport.c rds: transport module should be auto loaded when transport is set 2020-06-25 16:26:25 -07:00