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: 493 Comm: syz-executor.4 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:____rb_erase_color lib/rbtree.c:354 [inline]
RIP: 0010:__rb_erase_color+0x1e6/0xaf0 lib/rbtree.c:413
Code: 00 fc ff df 48 89 4d c0 80 3c 01 00 74 08 48 89 df e8 6e b9 3a ff 4c 8b 2b 4d 89 ef 49 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <41> 80 3c 07 00 74 08 4c 89 ef e8 4b b9 3a ff 41 f6 45 00 01 48 89
RSP: 0018:ffffc900014c7a60 EFLAGS: 00010246

RAX: dffffc0000000000 RBX: ffff88810cb11bf8 RCX: 1ffff1102196237f
RDX: ffffffff819b0830 RSI: 1ffff11022436355 RDI: ffff88810cb11be8
RBP: ffffc900014c7ac0 R08: dffffc0000000000 R09: ffffed1022436359
R10: ffffed1022436359 R11: 1ffff11022436358 R12: 1ffff11021962380
R13: 0000000000000000 R14: ffff88810cb11be8 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3846636f8c CR3: 000000011f20c000 CR4: 00000000003506a0
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+0xadf/0xb00 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:490
 exit_mmap+0x407/0x860 mm/mmap.c:3247
 __mmput+0x93/0x320 kernel/fork.c:1180
 mmput+0x50/0x150 kernel/fork.c:1203
 exit_mm kernel/exit.c:554 [inline]
 do_exit+0x9d2/0x27a0 kernel/exit.c:876
 __do_sys_exit kernel/exit.c:972 [inline]
 __se_sys_exit kernel/exit.c:970 [inline]
 __x64_sys_exit+0x40/0x40 kernel/exit.c:970
 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: 0033:0x7f57d1b61d39
Code: Unable to access opcode bytes at RIP 0x7f57d1b61d0f.
RSP: 002b:00007f57d1ae6078 EFLAGS: 00000246
 ORIG_RAX: 000000000000003c
RAX: ffffffffffffffda RBX: 00007f57d1c82f80 RCX: 00007f57d1b61d39
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f57d1ae6120 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 000000000000000b R14: 00007f57d1c82f80 R15: 00007ffe3df6e6d8
 </TASK>
Modules linked in:
---[ end trace 952a421a4bf6bef5 ]---
RIP: 0010:____rb_erase_color lib/rbtree.c:354 [inline]
RIP: 0010:__rb_erase_color+0x1e6/0xaf0 lib/rbtree.c:413
Code: 00 fc ff df 48 89 4d c0 80 3c 01 00 74 08 48 89 df e8 6e b9 3a ff 4c 8b 2b 4d 89 ef 49 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <41> 80 3c 07 00 74 08 4c 89 ef e8 4b b9 3a ff 41 f6 45 00 01 48 89
RSP: 0018:ffffc900014c7a60 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff88810cb11bf8 RCX: 1ffff1102196237f
RDX: ffffffff819b0830 RSI: 1ffff11022436355 RDI: ffff88810cb11be8
RBP: ffffc900014c7ac0 R08: dffffc0000000000 R09: ffffed1022436359
R10: ffffed1022436359 R11: 1ffff11022436358 R12: 1ffff11021962380
R13: 0000000000000000 R14: ffff88810cb11be8 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3846636f8c CR3: 000000011d683000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 3 bytes skipped:
   0:	df 48 89             	fisttps -0x77(%rax)
   3:	4d c0 80 3c 01 00 74 	rex.WRB rolb $0x8,0x7400013c(%r8)
   a:	08
   b:	48 89 df             	mov    %rbx,%rdi
   e:	e8 6e b9 3a ff       	call   0xff3ab981
  13:	4c 8b 2b             	mov    (%rbx),%r13
  16:	4d 89 ef             	mov    %r13,%r15
  19:	49 c1 ef 03          	shr    $0x3,%r15
  1d:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  24:	fc ff df
* 27:	41 80 3c 07 00       	cmpb   $0x0,(%r15,%rax,1) <-- trapping instruction
  2c:	74 08                	je     0x36
  2e:	4c 89 ef             	mov    %r13,%rdi
  31:	e8 4b b9 3a ff       	call   0xff3ab981
  36:	41 f6 45 00 01       	testb  $0x1,0x0(%r13)
  3b:	48                   	rex.W
  3c:	89                   	.byte 0x89