------------[ cut here ]------------
pgoff != vma->vm_start >> 12
WARNING: mm/vma.h:277 at vma_set_pgoff+0x246/0x2d0, CPU#0: syz.1.2133/11135
Modules linked in:
CPU: 0 UID: 0 PID: 11135 Comm: syz.1.2133 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:vma_set_pgoff+0x246/0x2d0
Code: 0b 90 e9 d5 fe ff ff e8 28 5f a1 ff 4c 89 f7 e8 60 94 02 ff c6 05 9f 19 1b 0e 01 90 0f 0b 90 e9 fe fe ff ff e8 0b 5f a1 ff 90 <0f> 0b 90 eb 9d 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c eb fd ff ff
RSP: 0018:ffffc9000463f748 EFLAGS: 00010287
RAX: ffffffff82258c55 RBX: 0000000200000a98 RCX: 0000000000080000
RDX: ffffc9000b681000 RSI: 00000000000000a5 RDI: 00000000000000a6
RBP: 0000000000000015 R08: ffff888175fd2f83 R09: 1ffff1102ebfa5f0
R10: dffffc0000000000 R11: ffffed102ebfa5f1 R12: 0000000000000001
R13: dffffc0000000000 R14: ffff888175fd2f00 R15: 0000000200000002
FS:  00007f6f110f36c0(0000) GS:ffff88818d95c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c4a8902 CR3: 0000000173c62000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 vma_add_pgoff+0x1a8/0x570
 __split_vma+0x89e/0xa60
 vms_gather_munmap_vmas+0x322/0x1370
 do_vmi_align_munmap+0x2b4/0x4b0
 do_vmi_munmap+0x252/0x2d0
 __vm_munmap+0x241/0x3e0
 __x64_sys_munmap+0x60/0x70
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6f1019e0d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6f110f3028 EFLAGS: 00000246 ORIG_RAX: 000000000000000b
RAX: ffffffffffffffda RBX: 00007f6f10425fa0 RCX: 00007f6f1019e0d9
RDX: 0000000000000000 RSI: 0000000000004000 RDI: 0000200000002000
RBP: 00007f6f10235024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6f10426038 R14: 00007f6f10425fa0 R15: 00007ffd393cff38
 </TASK>
