general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 PID: 11848 Comm: syz.1.3949 Tainted: G        W         syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:____rb_erase_color lib/rbtree.c:354 [inline]
RIP: 0010:__rb_erase_color+0x1e3/0xb20 lib/rbtree.c:413
Code: 00 fc ff df 48 89 4d c8 80 3c 01 00 74 08 4c 89 f7 e8 71 61 38 ff 4d 8b 3e 4d 89 fc 49 c1 ec 03 48 b8 00 00 00 00 00 fc ff df <41> 80 3c 04 00 74 08 4c 89 ff e8 4e 61 38 ff 41 f6 07 01 4c 89 75
RSP: 0018:ffffc90000a47a78 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff888140ba7748 RCX: 1ffff11028174eeb
RDX: ffffffff819cc020 RSI: 1ffff110213127b7 RDI: ffff888140ba7748
RBP: ffffc90000a47ad0 R08: ffff888109893dd7 R09: 1ffff110213127ba
R10: dffffc0000000000 R11: ffffed10213127bb R12: 0000000000000000
R13: ffff888140ba7750 R14: ffff888140ba7758 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3fc3104660 CR3: 0000000123d8e000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000200000000300 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+0xacf/0xaf0 mm/interval_tree.c:23
 __remove_shared_vm_struct mm/mmap.c:160 [inline]
 unlink_file_vma+0xda/0xf0 mm/mmap.c:175
 free_pgtables+0x139/0x280 mm/memory.c:492
 exit_mmap+0x433/0x8b0 mm/mmap.c:3247
 __mmput+0x92/0x300 kernel/fork.c:1185
 mmput+0x50/0x150 kernel/fork.c:1208
 exit_mm kernel/exit.c:555 [inline]
 do_exit+0xacc/0x29a0 kernel/exit.c:877
 __do_sys_exit kernel/exit.c:973 [inline]
 __se_sys_exit kernel/exit.c:971 [inline]
 __x64_sys_exit+0x40/0x40 kernel/exit.c:971
 x64_sys_call+0x44/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:61
 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: 0033:0x7f3fc3143e59
Code: Unable to access opcode bytes at RIP 0x7f3fc3143e2f.
RSP: 002b:00007f3fc1b9dfd8 EFLAGS: 00000246 ORIG_RAX: 000000000000003c
RAX: ffffffffffffffda RBX: 00007f3fc33bcfa0 RCX: 00007f3fc3143e59
RDX: 00007f3fc1b9e9c8 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f3fc31d9e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3fc33bd038 R14: 00007f3fc33bcfa0 R15: 00007fff241cb5d8
 </TASK>
Modules linked in:
---[ end trace 0c6c4edad9deb597 ]---
RIP: 0010:____rb_erase_color lib/rbtree.c:354 [inline]
RIP: 0010:__rb_erase_color+0x1e3/0xb20 lib/rbtree.c:413
Code: 00 fc ff df 48 89 4d c8 80 3c 01 00 74 08 4c 89 f7 e8 71 61 38 ff 4d 8b 3e 4d 89 fc 49 c1 ec 03 48 b8 00 00 00 00 00 fc ff df <41> 80 3c 04 00 74 08 4c 89 ff e8 4e 61 38 ff 41 f6 07 01 4c 89 75
RSP: 0018:ffffc90000a47a78 EFLAGS: 00010246

RAX: dffffc0000000000 RBX: ffff888140ba7748 RCX: 1ffff11028174eeb
RDX: ffffffff819cc020 RSI: 1ffff110213127b7 RDI: ffff888140ba7748
RBP: ffffc90000a47ad0 R08: ffff888109893dd7 R09: 1ffff110213127ba
R10: dffffc0000000000 R11: ffffed10213127bb R12: 0000000000000000
R13: ffff888140ba7750 R14: ffff888140ba7758 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3fc3104660 CR3: 000000011857c000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
----------------
Code disassembly (best guess):
   0:	00 fc                	add    %bh,%ah
   2:	ff                   	lcall  (bad)
   3:	df 48 89             	fisttps -0x77(%rax)
   6:	4d c8 80 3c 01       	rex.WRB enter $0x3c80,$0x1
   b:	00 74 08 4c          	add    %dh,0x4c(%rax,%rcx,1)
   f:	89 f7                	mov    %esi,%edi
  11:	e8 71 61 38 ff       	call   0xff386187
  16:	4d 8b 3e             	mov    (%r14),%r15
  19:	4d 89 fc             	mov    %r15,%r12
  1c:	49 c1 ec 03          	shr    $0x3,%r12
  20:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  27:	fc ff df
* 2a:	41 80 3c 04 00       	cmpb   $0x0,(%r12,%rax,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	4c 89 ff             	mov    %r15,%rdi
  34:	e8 4e 61 38 ff       	call   0xff386187
  39:	41 f6 07 01          	testb  $0x1,(%r15)
  3d:	4c                   	rex.WR
  3e:	89                   	.byte 0x89
  3f:	75                   	.byte 0x75