=============================
WARNING: suspicious RCU usage
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 28933 Comm: syz-executor2 Not tainted 4.14.0+ #130
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:53
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail+0x8c0/0xa40 lib/fault-inject.c:149
 should_failslab+0xec/0x120 mm/failslab.c:32
 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc mm/slab.c:3371 [inline]
 kmem_cache_alloc_trace+0x4b/0x750 mm/slab.c:3611
 kmalloc include/linux/slab.h:499 [inline]
 kzalloc include/linux/slab.h:688 [inline]
 tcp_sendmsg_fastopen net/ipv4/tcp.c:1152 [inline]
 tcp_sendmsg_locked+0x2453/0x3b30 net/ipv4/tcp.c:1214
 tcp_sendmsg+0x2f/0x50 net/ipv4/tcp.c:1461
 inet_sendmsg+0x11f/0x5e0 net/ipv4/af_inet.c:763
 sock_sendmsg_nosec net/socket.c:632 [inline]
 sock_sendmsg+0xca/0x110 net/socket.c:642
 SYSC_sendto+0x358/0x5a0 net/socket.c:1749
 SyS_sendto+0x40/0x50 net/socket.c:1717
 entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x4529d9
RSP: 002b:00007ffa296abc58 EFLAGS: 00000212 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000758020 RCX: 00000000004529d9
RDX: 0000000000000000 RSI: 0000000020fa0fff RDI: 0000000000000013
RBP: 0000000000000086 R08: 0000000020385ff0 R09: 0000000000000010
R10: 0000000020020003 R11: 0000000000000212 R12: 00000000004b759b
R13: 00007ffa296abbc8 R14: 00000000004b759b R15: 0000000000000000
netlink: 3 bytes leftover after parsing attributes in process `syz-executor0'.
page:ffffea000716b1c0 count:0 mapcount:0 mapping:          (null) index:0x0
flags: 0x2fffc0000000000()
raw: 02fffc0000000000 0000000000000000 0000000000000000 00000000ffffffff
raw: 0000000000000000 0000000100000001 0000000000000000 0000000000000000
page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) == 0)
------------[ cut here ]------------
kernel BUG at ./include/linux/mm.h:482!
invalid opcode: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 28967 Comm: syz-executor5 Not tainted 4.14.0+ #130
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8801d4644100 task.stack: ffff8801c5ac0000
RIP: 0010:put_page_testzero include/linux/mm.h:482 [inline]
RIP: 0010:__free_pages+0x118/0x150 mm/page_alloc.c:4288
RSP: 0018:ffff8801c5ac7700 EFLAGS: 00010203
RAX: 0000000000000000 RBX: ffffea000716b1c0 RCX: 0000000000000000
RDX: 00000000001f0100 RSI: 1ffff1003a8c8935 RDI: ffffed0038b58ed0
RBP: ffff8801c5ac7790 R08: 1ffff10038b58e04 R09: 0000000000000000
R10: dffffc0000000000 R11: 0000000000000000 R12: 1ffff10038b58ee1
R13: 1ffff10038b58ee5 R14: 0000000000000000 R15: ffff8801c5ac7768
FS:  00007f0e27f32700(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020e79ff0 CR3: 00000001c15a6000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 free_pages+0x51/0x90 mm/page_alloc.c:4302
 blkcipher_walk_done+0x767/0xde0 crypto/blkcipher.c:141
 encrypt+0x20e/0x540 arch/x86/crypto/salsa20_glue.c:79
 skcipher_crypt_blkcipher crypto/skcipher.c:619 [inline]
 skcipher_decrypt_blkcipher+0x213/0x310 crypto/skcipher.c:637
 crypto_skcipher_decrypt include/crypto/skcipher.h:463 [inline]
 _skcipher_recvmsg crypto/algif_skcipher.c:133 [inline]
 skcipher_recvmsg+0xb06/0xf30 crypto/algif_skcipher.c:164
 sock_recvmsg_nosec net/socket.c:805 [inline]
 sock_recvmsg+0xc9/0x110 net/socket.c:812
 ___sys_recvmsg+0x29b/0x630 net/socket.c:2207
 __sys_recvmsg+0xe2/0x210 net/socket.c:2252
 SYSC_recvmsg net/socket.c:2264 [inline]
 SyS_recvmsg+0x2d/0x50 net/socket.c:2259
 entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x4529d9
RSP: 002b:00007f0e27f31c58 EFLAGS: 00000212 ORIG_RAX: 000000000000002f
RAX: ffffffffffffffda RBX: 00000000007583b8 RCX: 00000000004529d9
RDX: 0000000040000020 RSI: 000000002080a000 RDI: 0000000000000016
RBP: 0000000000000086 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: 00000000006ed0b8
R13: 00000000ffffffff R14: 00007f0e27f326d4 R15: 0000000000000000
Code: 20 08 00 00 00 00 48 83 c4 68 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 29 f5 ff ff eb cf 48 c7 c6 80 2a 30 85 48 89 df e8 38 61 0c 00 <0f> 0b 4c 89 ef 89 b5 74 ff ff ff e8 78 f1 19 00 8b b5 74 ff ff 
RIP: put_page_testzero include/linux/mm.h:482 [inline] RSP: ffff8801c5ac7700
RIP: __free_pages+0x118/0x150 mm/page_alloc.c:4288 RSP: ffff8801c5ac7700
---[ end trace 4b30c707f2b6093a ]---