general protection fault, probably for non-canonical address 0xe0403c4040404040: 0000 [#1] PREEMPT SMP KASAN
KASAN: maybe wild-memory-access in range [0x0202020202020200-0x0202020202020207]
CPU: 1 PID: 12940 Comm: syz-executor.1 Not tainted 5.14.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:unlink_anon_vmas+0x63/0x860 mm/rmap.c:398
Code: 3c 02 00 0f 85 b9 07 00 00 48 8b 44 24 10 48 8b 58 78 48 b8 00 00 00 00 00 fc ff df 48 8d 6b f0 48 89 da 49 89 df 48 c1 ea 03 <80> 3c 02 00 0f 85 81 07 00 00 48 8b 03 48 39 5c 24 08 4c 8d 68 f0
RSP: 0018:ffffc900189d7978 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0202020202020202 RCX: 0000000000000000
RDX: 0040404040404040 RSI: ffffffff81af9fab RDI: ffff888000103e70
RBP: 02020202020201f2 R08: 00000000f5504000 R09: ffff88806a7bf76f
R10: ffffffff81a9fff7 R11: 000000000000003f R12: ffff888000103e70
R13: 00000000f5504000 R14: 0202020202020202 R15: 0202020202020202
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000009671404 CR3: 0000000058058000 CR4: 00000000001526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 free_pgtables+0xe2/0x2f0 mm/memory.c:412
 exit_mmap+0x1df/0x620 mm/mmap.c:3202
 __mmput+0x122/0x470 kernel/fork.c:1101
 mmput+0x58/0x60 kernel/fork.c:1122
 exit_mm kernel/exit.c:501 [inline]
 do_exit+0xae2/0x2a60 kernel/exit.c:812
 do_group_exit+0x125/0x310 kernel/exit.c:922
 get_signal+0x47f/0x2160 kernel/signal.c:2808
 arch_do_signal_or_restart+0x2a9/0x1c40 arch/x86/kernel/signal.c:865
 handle_signal_work kernel/entry/common.c:148 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
 exit_to_user_mode_prepare+0x17d/0x290 kernel/entry/common.c:209
 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
 syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:302
 __do_fast_syscall_32+0x72/0xf0 arch/x86/entry/common.c:181
 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf7f09549
Code: Unable to access opcode bytes at RIP 0xf7f0951f.
RSP: 002b:00000000f550367c EFLAGS: 00000296 ORIG_RAX: 00000000000000f0
RAX: fffffffffffffe00 RBX: 000000000819afc8 RCX: 0000000000000080
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000819afcc
RBP: 0000000000000081 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
---[ end trace 5b30340c546b5233 ]---
RIP: 0010:unlink_anon_vmas+0x63/0x860 mm/rmap.c:398
Code: 3c 02 00 0f 85 b9 07 00 00 48 8b 44 24 10 48 8b 58 78 48 b8 00 00 00 00 00 fc ff df 48 8d 6b f0 48 89 da 49 89 df 48 c1 ea 03 <80> 3c 02 00 0f 85 81 07 00 00 48 8b 03 48 39 5c 24 08 4c 8d 68 f0
RSP: 0018:ffffc900189d7978 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0202020202020202 RCX: 0000000000000000
RDX: 0040404040404040 RSI: ffffffff81af9fab RDI: ffff888000103e70
RBP: 02020202020201f2 R08: 00000000f5504000 R09: ffff88806a7bf76f
R10: ffffffff81a9fff7 R11: 000000000000003f R12: ffff888000103e70
R13: 00000000f5504000 R14: 0202020202020202 R15: 0202020202020202
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000085a0004 CR3: 000000008c011000 CR4: 00000000001526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	3c 02                	cmp    $0x2,%al
   2:	00 0f                	add    %cl,(%rdi)
   4:	85 b9 07 00 00 48    	test   %edi,0x48000007(%rcx)
   a:	8b 44 24 10          	mov    0x10(%rsp),%eax
   e:	48 8b 58 78          	mov    0x78(%rax),%rbx
  12:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  19:	fc ff df 
  1c:	48 8d 6b f0          	lea    -0x10(%rbx),%rbp
  20:	48 89 da             	mov    %rbx,%rdx
  23:	49 89 df             	mov    %rbx,%r15
  26:	48 c1 ea 03          	shr    $0x3,%rdx
  2a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2e:	0f 85 81 07 00 00    	jne    0x7b5
  34:	48 8b 03             	mov    (%rbx),%rax
  37:	48 39 5c 24 08       	cmp    %rbx,0x8(%rsp)
  3c:	4c 8d 68 f0          	lea    -0x10(%rax),%r13