Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 UID: 0 PID: 5322 Comm: syz.2.6 Not tainted 6.11.0-rc4-next-20240822-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:rb_set_parent_color include/linux/rbtree_augmented.h:191 [inline]
RIP: 0010:____rb_erase_color lib/rbtree.c:255 [inline]
RIP: 0010:rb_erase+0x530/0xe70 lib/rbtree.c:445
Code: 00 00 74 08 4c 89 ef e8 0e ca 44 f6 4d 89 7d 00 49 8d 6f 01 48 8b 5c 24 08 48 89 d8 48 c1 e8 03 49 bd 00 00 00 00 00 fc ff df <42> 80 3c 28 00 74 08 48 89 df e8 e1 c9 44 f6 48 89 2b 4c 89 fd 48
RSP: 0000:ffffc90004597a60 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: dffffc0000000000 RSI: ffff8880b903f860 RDI: ffff888021c43ec8
RBP: ffff8880253da0c1 R08: ffffffff81358221 R09: 1ffffffff203825d
R10: dffffc0000000000 R11: fffffbfff203825e R12: ffff8880253da0c0
R13: dffffc0000000000 R14: 1ffff11004a7b418 R15: ffff8880253da0c0
FS:  0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c364f88 CR3: 000000007afb8000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 sched_core_dequeue kernel/sched/core.c:283 [inline]
 dequeue_task+0x34d/0x550 kernel/sched/core.c:2031
 block_task kernel/sched/core.c:2079 [inline]
 __schedule+0x5d9/0x4b30 kernel/sched/core.c:6627
 do_task_dead+0xc4/0xd0 kernel/sched/core.c:6693
 do_exit+0x1f7f/0x28e0 kernel/exit.c:990
 do_group_exit+0x207/0x2c0 kernel/exit.c:1088
 __do_sys_exit_group kernel/exit.c:1099 [inline]
 __se_sys_exit_group kernel/exit.c:1097 [inline]
 __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1097
 x64_sys_call+0x26a8/0x26b0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9908179e79
Code: Unable to access opcode bytes at 0x7f9908179e4f.
RSP: 002b:00007ffd8e9b3048 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9908179e79
RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffd8e9b309c R08: 00007ffd8e9b312f R09: 000000000001107d
R10: 0000000000000006 R11: 0000000000000246 R12: 0000000000000032
R13: 000000000001107d R14: 0000000000010fbf R15: 00007ffd8e9b30f0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:rb_set_parent_color include/linux/rbtree_augmented.h:191 [inline]
RIP: 0010:____rb_erase_color lib/rbtree.c:255 [inline]
RIP: 0010:rb_erase+0x530/0xe70 lib/rbtree.c:445
Code: 00 00 74 08 4c 89 ef e8 0e ca 44 f6 4d 89 7d 00 49 8d 6f 01 48 8b 5c 24 08 48 89 d8 48 c1 e8 03 49 bd 00 00 00 00 00 fc ff df <42> 80 3c 28 00 74 08 48 89 df e8 e1 c9 44 f6 48 89 2b 4c 89 fd 48
RSP: 0000:ffffc90004597a60 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: dffffc0000000000 RSI: ffff8880b903f860 RDI: ffff888021c43ec8
RBP: ffff8880253da0c1 R08: ffffffff81358221 R09: 1ffffffff203825d
R10: dffffc0000000000 R11: fffffbfff203825e R12: ffff8880253da0c0
R13: dffffc0000000000 R14: 1ffff11004a7b418 R15: ffff8880253da0c0
FS:  0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c364f88 CR3: 000000007afb8000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	74 08                	je     0xc
   4:	4c 89 ef             	mov    %r13,%rdi
   7:	e8 0e ca 44 f6       	call   0xf644ca1a
   c:	4d 89 7d 00          	mov    %r15,0x0(%r13)
  10:	49 8d 6f 01          	lea    0x1(%r15),%rbp
  14:	48 8b 5c 24 08       	mov    0x8(%rsp),%rbx
  19:	48 89 d8             	mov    %rbx,%rax
  1c:	48 c1 e8 03          	shr    $0x3,%rax
  20:	49 bd 00 00 00 00 00 	movabs $0xdffffc0000000000,%r13
  27:	fc ff df
* 2a:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	48 89 df             	mov    %rbx,%rdi
  34:	e8 e1 c9 44 f6       	call   0xf644ca1a
  39:	48 89 2b             	mov    %rbp,(%rbx)
  3c:	4c 89 fd             	mov    %r15,%rbp
  3f:	48                   	rex.W