general protection fault in scatterwalk

general protection fault in scatterwalk_copychunks
Status: upstream: reported C repro on 2019/04/21 07:15
Reported-by: syzbot+bc78bb581922f5035c8d@syzkaller.appspotmail.com
First crash: 406d, last: 9h41m

similar bugs (4):
Kernel	Title	Repro	Count	Last	Reported	Patched	Status
upstream	general protection fault in scatterwalk_copychunks (3)	C	95	586d	712d	0/17	closed as invalid on 2019/06/10 23:08
upstream	general protection fault in scatterwalk_copychunks (2)	C	141	877d	904d	3/17	fixed on 2018/01/11 01:23
linux-4.19	general protection fault in scatterwalk_copychunks	C	60	1d23h	346d	0/1	upstream: reported C repro on 2019/06/20 18:59
upstream	general protection fault in scatterwalk_copychunks	C	414	905d	915d	3/17	fixed on 2017/12/08 02:32

Sample crash report:

audit: type=1400 audit(1567429156.168:36): avc:  denied  { map } for  pid=6867 comm="syz-executor924" path="/root/syz-executor924321400" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 6867 Comm: syz-executor924 Not tainted 4.14.141 #37
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8880a6342600 task.stack: ffff88809ef60000
RIP: 0010:scatterwalk_start include/crypto/scatterwalk.h:86 [inline]
RIP: 0010:scatterwalk_pagedone include/crypto/scatterwalk.h:111 [inline]
RIP: 0010:scatterwalk_pagedone include/crypto/scatterwalk.h:95 [inline]
RIP: 0010:scatterwalk_copychunks+0x4d6/0x6b0 crypto/scatterwalk.c:55
RSP: 0018:ffff88809ef67648 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000001000 RCX: ffff88808f2431f4
RDX: 0000000000000002 RSI: ffff8880a890c000 RDI: ffff88808f2431e8
RBP: ffff88809ef676b8 R08: ffffed1010d7a36a R09: 0000000000000002
R10: ffffed1010d7a369 R11: ffff888086bd1b4c R12: 0000000000001000
R13: 0000000000000000 R14: ffff88809ef67710 R15: 0000000000003000
FS:  0000000000f3a880(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe8d453ab0 CR3: 000000008fc78000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 scatterwalk_map_and_copy crypto/scatterwalk.c:72 [inline]
 scatterwalk_map_and_copy+0x12f/0x1d0 crypto/scatterwalk.c:60
 gcmaes_encrypt.constprop.0+0x1d2/0xb90 arch/x86/crypto/aesni-intel_glue.c:778
 generic_gcmaes_encrypt+0xf4/0x130 arch/x86/crypto/aesni-intel_glue.c:1111
 crypto_aead_encrypt include/crypto/aead.h:330 [inline]
 gcmaes_wrapper_encrypt+0xef/0x150 arch/x86/crypto/aesni-intel_glue.c:945
 crypto_aead_encrypt include/crypto/aead.h:330 [inline]
 tls_do_encryption net/tls/tls_sw.c:234 [inline]
 tls_push_record+0x906/0x1210 net/tls/tls_sw.c:270
 tls_sw_sendpage+0x434/0xb50 net/tls/tls_sw.c:617
 inet_sendpage+0x157/0x580 net/ipv4/af_inet.c:779
 kernel_sendpage+0x92/0xf0 net/socket.c:3406
 sock_sendpage+0x8b/0xc0 net/socket.c:871
 pipe_to_sendpage+0x242/0x340 fs/splice.c:451
 splice_from_pipe_feed fs/splice.c:502 [inline]
 __splice_from_pipe+0x348/0x780 fs/splice.c:626
 splice_from_pipe+0xf0/0x150 fs/splice.c:661
 generic_splice_sendpage+0x3c/0x50 fs/splice.c:832
 do_splice_from fs/splice.c:851 [inline]
 do_splice fs/splice.c:1147 [inline]
 SYSC_splice fs/splice.c:1402 [inline]
 SyS_splice+0xd92/0x1430 fs/splice.c:1382
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x440379
RSP: 002b:00007ffc91aa9098 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440379
RDX: 0000000000000004 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00000000006ca018 R08: 0000000100000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401c00
R13: 0000000000401c90 R14: 0000000000000000 R15: 0000000000000000
Code: 00 00 fc ff df 80 3c 02 00 0f 85 37 01 00 00 49 8d 45 10 4d 89 2e 48 89 c2 48 89 45 c0 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 7d 01 00 00 48 b8 00 00 00 
RIP: scatterwalk_start include/crypto/scatterwalk.h:86 [inline] RSP: ffff88809ef67648
RIP: scatterwalk_pagedone include/crypto/scatterwalk.h:111 [inline] RSP: ffff88809ef67648
RIP: scatterwalk_pagedone include/crypto/scatterwalk.h:95 [inline] RSP: ffff88809ef67648
RIP: scatterwalk_copychunks+0x4d6/0x6b0 crypto/scatterwalk.c:55 RSP: ffff88809ef67648
---[ end trace 0503b9ef08c715bc ]---

Crashes (131):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	Maintainers
ci2-linux-4-14	2019/09/02 13:02	linux-4.14.y	01fd1694	db7c31ca	.config	log	report	syz	C	davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2019/04/21 06:39	linux-4.14.y	68d7a45e	b0e8efcb	.config	log	report	syz	C	davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/05/31 12:59	linux-4.14.y	4f68020f	a0331e89	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/05/30 21:37	linux-4.14.y	4f68020f	6f3e1c7c	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/05/29 11:27	linux-4.14.y	4f68020f	d19ed305	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/05/27 08:33	linux-4.14.y	a41ba30d	9072c126	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/05/25 11:38	linux-4.14.y	a41ba30d	11284182	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/05/22 16:14	linux-4.14.y	a41ba30d	4afdfa20	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/05/22 14:48	linux-4.14.y	a41ba30d	4afdfa20	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/05/22 13:04	linux-4.14.y	a41ba30d	4afdfa20	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/05/20 16:53	linux-4.14.y	a41ba30d	4afdfa20	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/05/20 15:37	linux-4.14.y	a41ba30d	4afdfa20	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/05/20 08:57	linux-4.14.y	a41ba30d	6d882fd2	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/05/16 15:16	linux-4.14.y	ab9dfda2	37bccd4e	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/05/16 10:51	linux-4.14.y	ab9dfda2	37bccd4e	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/05/14 04:39	linux-4.14.y	ab9dfda2	a885920d	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/05/12 18:28	linux-4.14.y	ab9dfda2	a497a5b4	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/05/10 23:06	linux-4.14.y	ab9dfda2	8742a2b9	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/05/04 11:10	linux-4.14.y	773e2b1c	58ae5e18	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/05/03 20:36	linux-4.14.y	773e2b1c	58ae5e18	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/05/02 01:18	linux-4.14.y	050272a0	bc734e7a	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/04/30 07:47	linux-4.14.y	050272a0	2dd552a5	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/04/27 04:52	linux-4.14.y	050272a0	0ce7569e	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/04/15 16:38	linux-4.14.y	c10b57a5	3f3c5574	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/04/13 12:53	linux-4.14.y	c10b57a5	17a986e5	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/04/12 17:49	linux-4.14.y	4520f06b	36b0b050	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/04/09 06:44	linux-4.14.y	4520f06b	a8c6a3f8	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/04/09 05:05	linux-4.14.y	4520f06b	a8c6a3f8	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/04/08 19:04	linux-4.14.y	4520f06b	db9bcd4b	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/03/30 20:11	linux-4.14.y	01364dad	c8d1cc20	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/03/30 07:47	linux-4.14.y	01364dad	05736b29	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/03/30 03:34	linux-4.14.y	01364dad	05736b29	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/03/20 04:07	linux-4.14.y	12cd844a	2c31c529	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/03/17 15:58	linux-4.14.y	12cd844a	749688d2	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/03/08 13:30	linux-4.14.y	78d697fc	2e9971bb	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/03/02 13:18	linux-4.14.y	78d697fc	4a4e0509	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/03/02 09:45	linux-4.14.y	78d697fc	4a4e0509	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/03/01 10:49	linux-4.14.y	78d697fc	c88c7b75	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/03/01 08:13	linux-4.14.y	78d697fc	c88c7b75	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/02/29 14:06	linux-4.14.y	78d697fc	c88c7b75	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/02/27 03:39	linux-4.14.y	98db2bf2	251aabb7	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/02/25 12:15	linux-4.14.y	98db2bf2	59b57593	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org
ci2-linux-4-14	2020/02/23 07:58	linux-4.14.y	98db2bf2	2c36e7a7	.config	log	report			davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org