raw: 02fffc0000001028 ffffea0006ea0d88 ffffea0006d14c08 ffff8801d27c8a38
raw: 00000000000001c0 ffff8801c910c7e0 00000003ffffffff ffff880194748440
page dumped because: VM_BUG_ON_PAGE(page_to_pgoff(page) != index)
page->mem_cgroup:ffff880194748440
------------[ cut here ]------------
kernel BUG at mm/shmem.c:815!
invalid opcode: 0000 [#1] SMP KASAN
ntfs: (device loop2): parse_options(): The gid option requires an argument.
CPU: 0 PID: 530 Comm: syz-executor5 Not tainted 4.18.0-rc3-next-20180706+ #1
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:shmem_undo_range+0xdaa/0x29a0 mm/shmem.c:815
Code: 00 0f 85 bd 19 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 a5 f0 d6 ff 48 c7 c6 e0 32 f1 87 4c 89 e7 e8 16 10 05 00 <0f> 0b e8 8f f0 d6 ff 49 8d 7c 24 20 48 89 f8 48 c1 e8 03 80 3c 18 
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
RSP: 0018:ffff880192e967b0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: 00000000000128cb RSI: ffffffff81aaab95 RDI: ffffed00325d2ce0
RBP: ffff880192e96f28 R08: ffff8801bd4aa600 R09: ffffed003b5c4fc0
R10: ffffed003b5c4fc0 R11: ffff8801dae27e07 R12: ffffea0006e69dc0
R13: ffff880192e96f00 R14: 0000000000000002 R15: 00000000000001c0
FS:  00007f4fb6bb4700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CPU: 1 PID: 589 Comm: syz-executor4 Not tainted 4.18.0-rc3-next-20180706+ #1
CR2: 0000001b33222000 CR3: 00000001abb1e000 CR4: 00000000001406f0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
DR0: 00000000200001c0 DR1: 0000000000000000 DR2: 0000000000000000
Call Trace:
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
Call Trace:
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0xa/0x11 lib/fault-inject.c:149
 __should_failslab+0x124/0x180 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1557
 slab_pre_alloc_hook mm/slab.h:423 [inline]
 slab_alloc mm/slab.c:3378 [inline]
 kmem_cache_alloc+0x2af/0x760 mm/slab.c:3552
 shmem_alloc_inode+0x1b/0x40 mm/shmem.c:3519
 alloc_inode+0x63/0x190 fs/inode.c:210
 new_inode_pseudo+0x71/0x1a0 fs/inode.c:895
 new_inode+0x1c/0x40 fs/inode.c:924
 shmem_get_inode+0xf1/0x910 mm/shmem.c:2146
 shmem_truncate_range+0x27/0xa0 mm/shmem.c:971
 shmem_evict_inode+0x3b2/0xcb0 mm/shmem.c:1071
 __shmem_file_setup+0x259/0x700 mm/shmem.c:3894
 shmem_file_setup+0x2f/0x40 mm/shmem.c:3943
 __do_sys_memfd_create mm/memfd.c:304 [inline]
 __se_sys_memfd_create mm/memfd.c:247 [inline]
 __x64_sys_memfd_create+0x2af/0x4f0 mm/memfd.c:247
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 evict+0x4ae/0x990 fs/inode.c:558
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x455e29
Code: 1d 
ba 
 iput_final fs/inode.c:1508 [inline]
 iput+0x635/0xaa0 fs/inode.c:1534
fb 
ff c3 
66 
2e 
0f 1f 
84 
00 
00 
 dentry_unlink_inode+0x4ae/0x640 fs/dcache.c:377
00 
00 
00 
66 90 
48 
89 
f8 
48 
 __dentry_kill+0x44c/0x7a0 fs/dcache.c:569
89 
f7 48 
89 
d6 
48 
 dentry_kill+0xc9/0x5a0 fs/dcache.c:688
89 
 dput.part.26+0x66b/0x7a0 fs/dcache.c:849
ca 
4d 
89 
 dput+0x15/0x20 fs/dcache.c:831
c2 4d 
 __fput+0x558/0x930 fs/file_table.c:235
89 
c8 
4c 
8b 4c 
24 
 ____fput+0x15/0x20 fs/file_table.c:251
08 
 task_work_run+0x1ec/0x2a0 kernel/task_work.c:113
0f 
05 
<48> 
 get_signal+0x1557/0x1970 kernel/signal.c:2297
3d 
01 
f0 
ff 
ff 
0f 
83 
 do_signal+0x9c/0x21c0 arch/x86/kernel/signal.c:816
eb 
b9 
fb 
ff c3 
66 
2e 0f 
1f 84 
00 00 
00 
00 
RSP: 002b:00007f80151c1a88 EFLAGS: 00000246
 ORIG_RAX: 000000000000013f
RAX: ffffffffffffffda RBX: 0000000020000400 RCX: 0000000000455e29
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000004baa70
RBP: 000000000072bea0 R08: 0000000000000000 R09: 00000000fbad8001
R10: 0000000020000400 R11: 0000000000000246 R12: 0000000000000013
 exit_to_usermode_loop+0x2e0/0x370 arch/x86/entry/common.c:162
R13: 00000000004c25f2 R14: 00000000004d3eb0 R15: 0000000000000002
 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:268 [inline]
 do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x455c97
Code: 48 83 c4 08 48 89 d8 5b 5d c3 66 0f 1f 84 00 00 00 00 00 48 89 e8 48 f7 d8 48 39 c3 0f 92 c0 eb 92 66 90 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 7d bb fb ff c3 66 2e 0f 1f 84 00 00 00 00 
RSP: 002b:00007f4fb6bb3a88 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 00007f4fb6bb3b30 RCX: 0000000000455c97
RDX: 0000000000000000 RSI: 0000000000004c01 RDI: 0000000000000016
RBP: 0000000020000080 R08: 00007f4fb6bb3b30 R09: 00007f4fb6bb3ad0
R10: 0000000000008000 R11: 0000000000000246 R12: 0000000000000015
R13: 0000000000008000 R14: 00000000004d3f10 R15: 0000000000000005
Modules linked in:
Dumping ftrace buffer:
   (ftrace buffer empty)
---[ end trace c0f564badead2727 ]---
RIP: 0010:shmem_undo_range+0xdaa/0x29a0 mm/shmem.c:815
Code: 00 0f 85 bd 19 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 a5 f0 d6 ff 48 c7 c6 e0 32 f1 87 4c 89 e7 e8 16 10 05 00 <0f> 0b e8 8f f0 d6 ff 49 8d 7c 24 20 48 89 f8 48 c1 e8 03 80 3c 18 
RSP: 0018:ffff880192e967b0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: 00000000000128cb RSI: ffffffff81aaab95 RDI: ffffed00325d2ce0
RBP: ffff880192e96f28 R08: ffff8801bd4aa600 R09: ffffed003b5c4fc0
R10: ffffed003b5c4fc0 R11: ffff8801dae27e07 R12: ffffea0006e69dc0
R13: ffff880192e96f00 R14: 0000000000000002 R15: 00000000000001c0
FS:  00007f4fb6bb4700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b33222000 CR3: 00000001abb1e000 CR4: 00000000001406f0
DR0: 00000000200001c0 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600