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: 30357 Comm: syz-executor.4 Not tainted 5.18.0-rc6-next-20220516-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:____rb_erase_color lib/rbtree.c:354 [inline]
RIP: 0010:__rb_erase_color+0x159/0xdb0 lib/rbtree.c:413
Code: 89 ed 48 89 c5 e9 f5 fe ff ff 4c 8d 45 10 4c 89 c0 48 c1 e8 03 80 3c 18 00 0f 85 3a 08 00 00 4c 8b 65 10 4c 89 e0 48 c1 e8 03 <80> 3c 18 00 0f 85 6a 08 00 00 49 8b 04 24 49 8d 7c 24 08 48 89 f9
RSP: 0018:ffffc90002fdf7b8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: ffffed1028e00cd3 RSI: ffff888147006698 RDI: ffff88801a084388
RBP: ffff88801a084388 R08: ffff88801a084398 R09: ffff88814700668f
R10: ffffffff81b026c8 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: ffff888147006698 R15: ffffffff81b014b0
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000060078000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 rb_erase_augmented include/linux/rbtree_augmented.h:305 [inline]
 rb_erase_augmented_cached include/linux/rbtree_augmented.h:314 [inline]
 vma_interval_tree_remove+0x694/0xed0 mm/interval_tree.c:23
 __remove_shared_vm_struct mm/mmap.c:160 [inline]
 unlink_file_vma+0xbd/0x110 mm/mmap.c:175
 free_pgtables+0x255/0x420 mm/memory.c:440
 exit_mmap+0x1ff/0x740 mm/mmap.c:3221
 __mmput+0x128/0x4c0 kernel/fork.c:1180
 mmput+0x5c/0x70 kernel/fork.c:1201
 exit_mm kernel/exit.c:510 [inline]
 do_exit+0xa18/0x2a00 kernel/exit.c:782
 do_group_exit+0xd2/0x2f0 kernel/exit.c:925
 get_signal+0x2542/0x2600 kernel/signal.c:2857
 arch_do_signal_or_restart+0x82/0x20f0 arch/x86/kernel/signal.c:869
 exit_to_user_mode_loop kernel/entry/common.c:166 [inline]
 exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
 syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:294
 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7eff8de890e9
Code: Unable to access opcode bytes at RIP 0x7eff8de890bf.
RSP: 002b:00007fff95246378 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffdfc RBX: 00007eff8df9bf6c RCX: 00007eff8de890e9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007eff8df9bf6c
RBP: 00007eff8df9bf60 R08: 00007fff95324080 R09: 0000000000000000
R10: 00007fff95246460 R11: 0000000000000246 R12: 00000000002fb2df
R13: 00007fff95246460 R14: 00007fff95246480 R15: 0000000000000032
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:____rb_erase_color lib/rbtree.c:354 [inline]
RIP: 0010:__rb_erase_color+0x159/0xdb0 lib/rbtree.c:413
Code: 89 ed 48 89 c5 e9 f5 fe ff ff 4c 8d 45 10 4c 89 c0 48 c1 e8 03 80 3c 18 00 0f 85 3a 08 00 00 4c 8b 65 10 4c 89 e0 48 c1 e8 03 <80> 3c 18 00 0f 85 6a 08 00 00 49 8b 04 24 49 8d 7c 24 08 48 89 f9
RSP: 0018:ffffc90002fdf7b8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: ffffed1028e00cd3 RSI: ffff888147006698 RDI: ffff88801a084388
RBP: ffff88801a084388 R08: ffff88801a084398 R09: ffff88814700668f
R10: ffffffff81b026c8 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: ffff888147006698 R15: ffffffff81b014b0
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000060078000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	89 ed                	mov    %ebp,%ebp
   2:	48 89 c5             	mov    %rax,%rbp
   5:	e9 f5 fe ff ff       	jmpq   0xfffffeff
   a:	4c 8d 45 10          	lea    0x10(%rbp),%r8
   e:	4c 89 c0             	mov    %r8,%rax
  11:	48 c1 e8 03          	shr    $0x3,%rax
  15:	80 3c 18 00          	cmpb   $0x0,(%rax,%rbx,1)
  19:	0f 85 3a 08 00 00    	jne    0x859
  1f:	4c 8b 65 10          	mov    0x10(%rbp),%r12
  23:	4c 89 e0             	mov    %r12,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	80 3c 18 00          	cmpb   $0x0,(%rax,%rbx,1) <-- trapping instruction
  2e:	0f 85 6a 08 00 00    	jne    0x89e
  34:	49 8b 04 24          	mov    (%r12),%rax
  38:	49 8d 7c 24 08       	lea    0x8(%r12),%rdi
  3d:	48 89 f9             	mov    %rdi,%rcx