general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 PID: 26204 Comm: syz-executor.3 Not tainted 6.4.0-syzkaller-10173-ga901a3568fd2 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
RIP: 0010:mas_validate_gaps lib/maple_tree.c:7002 [inline]
RIP: 0010:mt_validate+0x32ac/0x4370 lib/maple_tree.c:7224
Code: 89 ee e8 67 d9 76 f7 49 83 fd 06 0f 84 a6 06 00 00 e8 18 dd 76 f7 49 01 de 48 ba 00 00 00 00 00 fc ff df 4c 89 f0 48 c1 e8 03 <80> 3c 10 00 0f 85 4b 10 00 00 4d 8b 2e 4c 89 ff 4c 89 ee e8 ac d8
RSP: 0018:ffffc90028b77940 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: ffffffff8a0d1288 RDI: 0000000000000007
RBP: ffff888021076400 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: ffff888021076400 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f640b6d4700(0000) GS:ffff88806b600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f640b671718 CR3: 0000000113b5c000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 validate_mm+0x9d/0x470 mm/mmap.c:300
 do_vmi_align_munmap+0x1199/0x1680 mm/mmap.c:2561
 do_vmi_munmap+0x266/0x430 mm/mmap.c:2619
 __vm_munmap+0x137/0x380 mm/mmap.c:2899
 __do_sys_munmap mm/mmap.c:2916 [inline]
 __se_sys_munmap mm/mmap.c:2913 [inline]
 __x64_sys_munmap+0x62/0x80 mm/mmap.c:2913
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f640a88c467
Code: 00 00 00 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb 85 66 2e 0f 1f 84 00 00 00 00 00 90 b8 0b 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f640b6d3f38 EFLAGS: 00000213 ORIG_RAX: 000000000000000b
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f640a88c467
RDX: 0000000000000000 RSI: 0000000008400000 RDI: 00007f6400fff000
RBP: 00007f6400fff000 R08: 00000000000004a4 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000000002
R13: 00007f640b6d3fdc R14: 00007f640b6d3fe0 R15: 0000000020000582
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:mas_validate_gaps lib/maple_tree.c:7002 [inline]
RIP: 0010:mt_validate+0x32ac/0x4370 lib/maple_tree.c:7224
Code: 89 ee e8 67 d9 76 f7 49 83 fd 06 0f 84 a6 06 00 00 e8 18 dd 76 f7 49 01 de 48 ba 00 00 00 00 00 fc ff df 4c 89 f0 48 c1 e8 03 <80> 3c 10 00 0f 85 4b 10 00 00 4d 8b 2e 4c 89 ff 4c 89 ee e8 ac d8
RSP: 0018:ffffc90028b77940 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: ffffffff8a0d1288 RDI: 0000000000000007
RBP: ffff888021076400 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: ffff888021076400 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f640b6d4700(0000) GS:ffff88806b600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f640b671718 CR3: 0000000113b5c000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	89 ee                	mov    %ebp,%esi
   2:	e8 67 d9 76 f7       	callq  0xf776d96e
   7:	49 83 fd 06          	cmp    $0x6,%r13
   b:	0f 84 a6 06 00 00    	je     0x6b7
  11:	e8 18 dd 76 f7       	callq  0xf776dd2e
  16:	49 01 de             	add    %rbx,%r14
  19:	48 ba 00 00 00 00 00 	movabs $0xdffffc0000000000,%rdx
  20:	fc ff df
  23:	4c 89 f0             	mov    %r14,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	80 3c 10 00          	cmpb   $0x0,(%rax,%rdx,1) <-- trapping instruction
  2e:	0f 85 4b 10 00 00    	jne    0x107f
  34:	4d 8b 2e             	mov    (%r14),%r13
  37:	4c 89 ff             	mov    %r15,%rdi
  3a:	4c 89 ee             	mov    %r13,%rsi
  3d:	e8                   	.byte 0xe8
  3e:	ac                   	lods   %ds:(%rsi),%al
  3f:	d8                   	.byte 0xd8