WARNING in rds_rdma_extra

WARNING in rds_rdma_extra_size
Status: fixed on 2021/03/10 01:48
Reported-by: syzbot+1bd2b07f93745fa38425@syzkaller.appspotmail.com
Fix commit: a11148e6fcce net/rds: restrict iovecs length for RDS_CMSG_RDMA_ARGS
First crash: 333d, last: 304d

Cause bisection: introduced by (bisect log) :
commit fdadd04931c2d7cd294dc5b2b342863f94be53a3
Author: Daniel Borkmann <daniel@iogearbox.net>
Date: Tue Dec 11 11:14:12 2018 +0000

bpf: fix bpf_jit_limit knob for PAGE_SIZE >= 64K

Crash: KASAN: use-after-free Read in batadv_iv_ogm_queue_add (log)
Repro: C syz .config

duplicates (1):
Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
WARNING in kmalloc_array				1	321d	319d	0/22	closed as dup on 2021/01/26 12:43

Patch testing requests:
Created	Duration	User	Patch	Repo	Result
2021/02/01 20:15	15m	snovitoll@gmail.com		https://linux.googlesource.com/linux/kernel/git/torvalds/linux refs/changes/76/7976/1	OK

Sample crash report:

------------[ cut here ]------------
WARNING: CPU: 1 PID: 8462 at mm/page_alloc.c:4976 __alloc_pages_nodemask+0x5f8/0x730 mm/page_alloc.c:5011
Modules linked in:
CPU: 1 PID: 8462 Comm: syz-executor292 Not tainted 5.11.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__alloc_pages_nodemask+0x5f8/0x730 mm/page_alloc.c:4976
Code: 00 00 0c 00 0f 85 a7 00 00 00 8b 3c 24 4c 89 f2 44 89 e6 c6 44 24 70 00 48 89 6c 24 58 e8 d0 d7 ff ff 49 89 c5 e9 ea fc ff ff <0f> 0b e9 b5 fd ff ff 89 74 24 14 4c 89 4c 24 08 4c 89 74 24 18 e8
RSP: 0018:ffffc9000169f790 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 1ffff920002d3ef6 RCX: 0000000000000000
RDX: 0000000000000000 RSI: dffffc0000000000 RDI: 0000000000040dc0
RBP: 0000000000040dc0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff81b1f7f1 R11: 0000000000000000 R12: 0000000000000018
R13: 0000000000000018 R14: 0000000000000000 R15: 0000000ffffff1f0
FS:  0000000000f3c880(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6b332916c0 CR3: 00000000133c3000 CR4: 0000000000350ee0
Call Trace:
 alloc_pages_current+0x18c/0x2a0 mm/mempolicy.c:2267
 alloc_pages include/linux/gfp.h:547 [inline]
 kmalloc_order+0x2e/0xb0 mm/slab_common.c:837
 kmalloc_order_trace+0x14/0x120 mm/slab_common.c:853
 kmalloc_array include/linux/slab.h:592 [inline]
 kcalloc include/linux/slab.h:621 [inline]
 rds_rdma_extra_size+0xb2/0x3b0 net/rds/rdma.c:568
 rds_rm_size net/rds/send.c:928 [inline]
 rds_sendmsg+0x20d7/0x3020 net/rds/send.c:1265
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:672
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2345
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2399
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2432
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x440359
Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffe89376b68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440359
RDX: 0000000000000000 RSI: 0000000020001600 RDI: 0000000000000003
RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401b60
R13: 0000000000401bf0 R14: 0000000000000000 R15: 0000000000000000

Crashes (165):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Title
ci-upstream-kasan-gce-root	2021/01/06 07:58	upstream	6207214a70bf	b1c228e1	.config	log	report	syz	C
ci-upstream-net-this-kasan-gce	2021/01/06 08:43	net	f6e7a024bfe5	b1c228e1	.config	log	report	syz	C
ci-upstream-net-this-kasan-gce	2021/01/06 08:23	net	f6e7a024bfe5	b1c228e1	.config	log	report	syz	C
ci-upstream-net-kasan-gce	2021/01/06 09:08	net-next	f6e7a024bfe5	b1c228e1	.config	log	report	syz	C
ci-upstream-net-kasan-gce	2021/01/06 07:43	net-next	f6e7a024bfe5	b1c228e1	.config	log	report	syz	C
ci-upstream-kasan-gce	2021/01/22 17:11	upstream	9f29bd8b2e71	d4f4eca5	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-kasan-gce-root	2021/01/17 16:27	upstream	0da0a8a0a0e1	813be542	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-kasan-gce-386	2021/02/02 00:04	upstream	1048ba83fb1c	e6b95f32	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-kasan-gce-386	2021/02/01 09:13	upstream	1048ba83fb1c	fc9fd31e	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-kasan-gce-386	2021/02/01 09:05	upstream	1048ba83fb1c	fc9fd31e	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-qemu-upstream-386	2021/02/01 07:34	upstream	1048ba83fb1c	fc9fd31e	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-kasan-gce-386	2021/01/31 07:40	upstream	8c947645151c	fc9fd31e	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-kasan-gce-386	2021/01/30 20:37	upstream	0e9bcda5d286	fc9fd31e	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-kasan-gce-386	2021/01/30 18:45	upstream	0e9bcda5d286	fc9fd31e	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-kasan-gce-386	2021/01/30 17:34	upstream	0e9bcda5d286	fc9fd31e	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-kasan-gce-386	2021/01/30 08:51	upstream	0e9bcda5d286	fc9fd31e	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-kasan-gce-386	2021/01/29 07:26	upstream	e5ff2cb9cf67	7df34f59	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-kasan-gce-386	2021/01/27 19:32	upstream	2ab38c17aac1	a0ebf917	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-kasan-gce-386	2021/01/27 05:06	upstream	13391c60da33	55a7d4df	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-kasan-gce-386	2021/01/26 23:56	upstream	13391c60da33	55a7d4df	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-kasan-gce-386	2021/01/26 20:29	upstream	13391c60da33	55a7d4df	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-kasan-gce-386	2021/01/24 14:09	upstream	e1ae4b0be158	52e37319	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-kasan-gce-386	2021/01/24 07:04	upstream	e1ae4b0be158	52e37319	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-kasan-gce-386	2021/01/23 01:44	upstream	83d09ad4b950	4080af96	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-kasan-gce-386	2021/01/22 23:18	upstream	83d09ad4b950	4080af96	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-kasan-gce-386	2021/01/21 21:56	upstream	9791581c049c	d4f4eca5	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-kasan-gce-386	2021/01/21 09:54	upstream	75439bc439e0	d4f4eca5	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-kasan-gce-386	2021/01/21 07:56	upstream	75439bc439e0	d4f4eca5	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-kasan-gce-386	2021/01/20 21:42	upstream	45dfb8a5659a	d4f4eca5	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-kasan-gce-386	2021/01/20 15:05	upstream	45dfb8a5659a	d4f4eca5	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-kasan-gce-386	2021/01/19 22:50	upstream	1e2a199f6ccd	63631df1	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-kasan-gce-386	2021/01/19 07:18	upstream	1e2a199f6ccd	63631df1	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-kasan-gce-386	2021/01/19 06:50	upstream	1e2a199f6ccd	63631df1	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-net-this-kasan-gce	2021/01/31 22:11	net	eb4e8fac00d1	fc9fd31e	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-net-this-kasan-gce	2021/01/23 10:04	net	0607a2cddb60	52e37319	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-net-this-kasan-gce	2021/01/23 05:31	net	35c715c30b95	4080af96	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-net-kasan-gce	2021/02/03 02:23	net-next	9ae4bdc6e4c1	624dad51	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-net-kasan-gce	2021/01/30 07:20	net-next	46eb3c108fe1	fc9fd31e	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-net-kasan-gce	2021/01/26 19:19	net-next	02c26940908f	55a7d4df	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-net-kasan-gce	2021/01/26 08:28	net-next	24f97b6af9a0	52e37319	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-net-kasan-gce	2021/01/23 03:32	net-next	43e5763152e2	4080af96	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-net-kasan-gce	2021/01/23 01:34	net-next	43e5763152e2	4080af96	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-net-kasan-gce	2021/01/19 01:37	net-next	220723dc3bcf	63631df1	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-net-kasan-gce	2021/01/18 07:17	net-next	213b97b12580	fd103621	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-linux-next-kasan-gce-root	2021/02/01 12:28	linux-next	b01f250d83f6	fc9fd31e	.config	log	report			info	WARNING in rds_rdma_extra_size
ci-upstream-kasan-gce	2021/01/16 15:09	upstream	1d94330a437a	65a7a854	.config	log	report			info
ci-upstream-kasan-gce	2021/01/15 05:29	upstream	146620506274	65a7a854	.config	log	report			info
ci-upstream-kasan-gce	2021/01/14 14:28	upstream	65f0d2414b70	269d24e8	.config	log	report			info
ci-upstream-kasan-gce-386	2021/01/17 05:15	upstream	0da0a8a0a0e1	65a7a854	.config	log	report			info
ci-upstream-kasan-gce-386	2021/01/17 05:03	upstream	0da0a8a0a0e1	65a7a854	.config	log	report			info
ci-upstream-kasan-gce-386	2021/01/16 22:37	upstream	1d94330a437a	65a7a854	.config	log	report			info
ci-upstream-kasan-gce-386	2021/01/15 14:02	upstream	146620506274	65a7a854	.config	log	report			info
ci-upstream-kasan-gce-386	2021/01/15 00:22	upstream	65f0d2414b70	65a7a854	.config	log	report			info
ci-upstream-kasan-gce-386	2021/01/14 19:37	upstream	65f0d2414b70	65a7a854	.config	log	report			info
ci-upstream-kasan-gce-386	2021/01/13 22:54	upstream	e609571b5ffa	a945f0a3	.config	log	report			info
ci-upstream-kasan-gce-386	2021/01/05 20:53	upstream	36bbbd0e234d	a0234d98	.config	log	report			info
ci-upstream-net-this-kasan-gce	2021/01/15 21:23	net	146620506274	65a7a854	.config	log	report			info
ci-upstream-linux-next-kasan-gce-root	2021/01/07 17:27	linux-next	2d3811a4fb23	c104d4a3	.config	log	report			info