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: 1158 Comm: syz.3.292 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
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 d1 4e 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 ae 4e 38 ff 41 f6 07 01 4c 89 75
RSP: 0018:ffffc90000bb7718 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff888126f39870 RCX: 1ffff11024de7310
RDX: ffffffff819ccaf0 RSI: 1ffff1102131929a RDI: ffff888126f39870
RBP: ffffc90000bb7770 R08: ffff8881098c94ef R09: 1ffff1102131929d
R10: dffffc0000000000 R11: ffffed102131929e R12: 0000000000000000
R13: ffff888126f39878 R14: ffff888126f39880 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2df3d1fdac CR3: 000000000660f000 CR4: 00000000003506b0
DR0: 0000200000000300 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_group_exit+0x149/0x310 kernel/exit.c:1004
 get_signal+0x64f/0x1430 kernel/signal.c:2908
 arch_do_signal_or_restart+0xe2/0x1100 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0xa7/0xe0 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:214
 irqentry_exit_to_user_mode+0x9/0x10 kernel/entry/common.c:320
 irqentry_exit+0x12/0x40 kernel/entry/common.c:411
 exc_page_fault+0x5e/0xb0 arch/x86/mm/fault.c:1563
 asm_exc_page_fault+0x27/0x30 arch/x86/include/asm/idtentry.h:606
RIP: 0033:0x7ff640238bd7
Code: Unable to access opcode bytes at RIP 0x7ff640238bad.
RSP: 002b:00007ff63ed9c120 EFLAGS: 00010202
RAX: 0000000000000000 RBX: 000000000000000b RCX: 00007ff640383159
RDX: 00007ff63ed9c140 RSI: 00007ff63ed9c270 RDI: 000000000000000b
RBP: 00007ff64041a024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007ff64060b128 R14: 00007ff64060b090 R15: 00007fff67850db8
 </TASK>
Modules linked in:
---[ end trace 2e6158c5121b18c0 ]---
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 d1 4e 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 ae 4e 38 ff 41 f6 07 01 4c 89 75
RSP: 0018:ffffc90000bb7718 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff888126f39870 RCX: 1ffff11024de7310
RDX: ffffffff819ccaf0 RSI: 1ffff1102131929a RDI: ffff888126f39870
RBP: ffffc90000bb7770 R08: ffff8881098c94ef R09: 1ffff1102131929d
R10: dffffc0000000000 R11: ffffed102131929e R12: 0000000000000000
R13: ffff888126f39878 R14: ffff888126f39880 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000017c0 CR3: 000000011e873000 CR4: 00000000003506a0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 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 d1 4e 38 ff       	call   0xff384ee7
  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 ae 4e 38 ff       	call   0xff384ee7
  39:	41 f6 07 01          	testb  $0x1,(%r15)
  3d:	4c                   	rex.WR
  3e:	89                   	.byte 0x89
  3f:	75                   	.byte 0x75