Oops: stack segment: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 7791 Comm: syz.2.354 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:pgtable_trans_huge_withdraw+0x115/0x310
Code: c3 10 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 5d 38 13 00 48 8b 03 48 89 04 24 4c 8d 78 08 4c 89 fd 48 c1 ed 03 <42> 80 7c 2d 00 00 74 08 4c 89 ff e8 3b 38 13 00 49 8b 07 48 8d 48
RSP: 0018:ffffc9000682f580 EFLAGS: 00010202
RAX: 0000000000000000 RBX: ffffea0004748d50 RCX: ffff888023021cc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffff88810e5dbde3 R09: 1ffff11021cbb7bc
R10: dffffc0000000000 R11: ffffed1021cbb7bd R12: ffff88811d235008
R13: dffffc0000000000 R14: ffff88811d235000 R15: 0000000000000008
FS:  0000000000000000(0000) GS:ffff8880b8612000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f327c84f980 CR3: 000000000df36000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 zap_huge_pmd+0xa25/0xf50
 unmap_page_range+0x9fe/0x4370
 unmap_vmas+0x399/0x580
 exit_mmap+0x248/0xb50
 __mmput+0x118/0x430
 exit_mm+0x1da/0x2c0
 do_exit+0x648/0x2300
 __x64_sys_exit+0x40/0x40
 x64_sys_call+0x21da/0x2200
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f327c98ec29
Code: Unable to access opcode bytes at 0x7f327c98ebff.
RSP: 002b:0000200000001118 EFLAGS: 00000246 ORIG_RAX: 000000000000003c
RAX: ffffffffffffffda RBX: 000000000000000b RCX: 00007f327c98ec29
RDX: 00007f327c98ec29 RSI: 0000200000001140 RDI: 000000000000000b
RBP: 00007f327ca11e41 R08: 0000200000000380 R09: 6161616161616161
R10: 0000200000000380 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f327cbd6128 R14: 00007f327cbd6090 R15: 00007ffd1e2a1718
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:pgtable_trans_huge_withdraw+0x115/0x310
Code: c3 10 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 5d 38 13 00 48 8b 03 48 89 04 24 4c 8d 78 08 4c 89 fd 48 c1 ed 03 <42> 80 7c 2d 00 00 74 08 4c 89 ff e8 3b 38 13 00 49 8b 07 48 8d 48
RSP: 0018:ffffc9000682f580 EFLAGS: 00010202
RAX: 0000000000000000 RBX: ffffea0004748d50 RCX: ffff888023021cc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffff88810e5dbde3 R09: 1ffff11021cbb7bc
R10: dffffc0000000000 R11: ffffed1021cbb7bd R12: ffff88811d235008
R13: dffffc0000000000 R14: ffff88811d235000 R15: 0000000000000008
FS:  0000000000000000(0000) GS:ffff8880b8612000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f327c84f980 CR3: 000000000df36000 CR4: 00000000000006f0
