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: 5791 Comm: syz.1.1897 Not tainted 5.15.185-syzkaller-00032-g0d918fa8e88d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:rb_set_parent_color include/linux/rbtree_augmented.h:165 [inline]
RIP: 0010:____rb_erase_color lib/rbtree.c:255 [inline]
RIP: 0010:__rb_erase_color+0xe7/0xaf0 lib/rbtree.c:413
Code: 8b 4d c0 80 3c 01 00 74 09 48 8b 7d c8 e8 f1 e1 3a ff 4d 89 6e 08 4c 89 33 4c 89 e8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 ef e8 cb e1 3a ff 4c 89 f0 48 83 c8 01 49
RSP: 0018:ffffc900015877c0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888110abb068 RCX: dffffc0000000000
RDX: ffffffff819aeab0 RSI: 1ffff1102131fc19 RDI: ffff888127473e38
RBP: ffffc90001587820 R08: dffffc0000000000 R09: ffffed102131fc1d
R10: ffffed102131fc1d R11: 1ffff1102131fc1c R12: 1ffff1102215760b
R13: 0000000000000000 R14: ffff888127473e38 R15: ffff888110abb058
FS:  00007fa484d026c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000d5000 CR3: 000000012a21d000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
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+0xadf/0xb00 mm/interval_tree.c:23
 __remove_shared_vm_struct mm/mmap.c:159 [inline]
 unlink_file_vma+0xd7/0xf0 mm/mmap.c:174
 free_pgtables+0x139/0x280 mm/memory.c:490
 exit_mmap+0x407/0x860 mm/mmap.c:3235
 __mmput+0x93/0x320 kernel/fork.c:1180
 mmput+0x50/0x150 kernel/fork.c:1203
 copy_process+0x25ae/0x3210 kernel/fork.c:2600
 kernel_clone+0x23f/0x940 kernel/fork.c:2737
 __do_sys_clone kernel/fork.c:2863 [inline]
 __se_sys_clone kernel/fork.c:2847 [inline]
 __x64_sys_clone+0x176/0x1d0 kernel/fork.c:2847
 x64_sys_call+0x41f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:57
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fa4866ba929
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa484d01fe8 EFLAGS: 00000202 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fa4868e2080 RCX: 00007fa4866ba929
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000c0001480
RBP: 00007fa48673cb39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fa4868e2080 R15: 00007ffff256b7e8
 </TASK>
Modules linked in:
---[ end trace 873f80c443cf2d8e ]---
RIP: 0010:rb_set_parent_color include/linux/rbtree_augmented.h:165 [inline]
RIP: 0010:____rb_erase_color lib/rbtree.c:255 [inline]
RIP: 0010:__rb_erase_color+0xe7/0xaf0 lib/rbtree.c:413
Code: 8b 4d c0 80 3c 01 00 74 09 48 8b 7d c8 e8 f1 e1 3a ff 4d 89 6e 08 4c 89 33 4c 89 e8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 ef e8 cb e1 3a ff 4c 89 f0 48 83 c8 01 49
RSP: 0018:ffffc900015877c0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888110abb068 RCX: dffffc0000000000
RDX: ffffffff819aeab0 RSI: 1ffff1102131fc19 RDI: ffff888127473e38
RBP: ffffc90001587820 R08: dffffc0000000000 R09: ffffed102131fc1d
R10: ffffed102131fc1d R11: 1ffff1102131fc1c R12: 1ffff1102215760b
R13: 0000000000000000 R14: ffff888127473e38 R15: ffff888110abb058
FS:  00007fa484d026c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000047d000 CR3: 000000012a21d000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
----------------
Code disassembly (best guess):
   0:	8b 4d c0             	mov    -0x40(%rbp),%ecx
   3:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1)
   7:	74 09                	je     0x12
   9:	48 8b 7d c8          	mov    -0x38(%rbp),%rdi
   d:	e8 f1 e1 3a ff       	call   0xff3ae203
  12:	4d 89 6e 08          	mov    %r13,0x8(%r14)
  16:	4c 89 33             	mov    %r14,(%rbx)
  19:	4c 89 e8             	mov    %r13,%rax
  1c:	48 c1 e8 03          	shr    $0x3,%rax
  20:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  27:	fc ff df
* 2a:	80 3c 08 00          	cmpb   $0x0,(%rax,%rcx,1) <-- trapping instruction
  2e:	74 08                	je     0x38
  30:	4c 89 ef             	mov    %r13,%rdi
  33:	e8 cb e1 3a ff       	call   0xff3ae203
  38:	4c 89 f0             	mov    %r14,%rax
  3b:	48 83 c8 01          	or     $0x1,%rax
  3f:	49                   	rex.WB