Breno Leitao 512db8267b rds: mark snapshot pages dirty in rds_info_getsockopt() ...

rds_info_getsockopt() pins the destination user pages with FOLL_WRITE and
the RDS_INFO_* producers memcpy the snapshot into them through
kmap_atomic(). Because that copy goes through the kernel direct map, the
dirty bit on the user PTE is never set, so unpin_user_pages() releases the
pages without marking them dirty. A file-backed destination page can then
be reclaimed without writeback, silently discarding the copied data.

Use unpin_user_pages_dirty_lock() with make_dirty=true so the modified
pages are marked dirty before they are unpinned.

Fixes: a8c879a7ee ("RDS: Info and stats")
Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Allison Henderson <achender@kernel.org>
Link: https://patch.msgid.link/20260608-rds_fix-v1-1-006c88543408@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

2026-06-10 08:18:16 -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

net: rds: clear i_sends on setup unwind

2026-06-02 13:31:27 -07:00

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: fix NULL deref in rds_ib_send_cqe_handler() on masked atomic completion

2026-06-09 18:32:54 -07:00

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

rds: mark snapshot pages dirty in rds_info_getsockopt()

2026-06-10 08:18:16 -07:00

info.h

…

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

…

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

…

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

…

tcp.c

rds_tcp: close NULL deref window in rds_tcp_set_callbacks

2026-05-14 17:06:59 -07:00

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