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: 5358 Comm: syz.4.14 Not tainted 6.11.0-rc4-next-20240823-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:359 [inline]
RIP: 0010:rb_erase+0x6a9/0xe70 lib/rbtree.c:445
Code: 48 89 03 42 80 7c 2d 00 00 74 08 4c 89 ff e8 5e c4 44 f6 48 8b 1c 24 49 89 1f 4c 8d 7b 01 48 8b 6c 24 08 48 89 e8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 ef e8 38 c4 44 f6 4c 89 7d 00 48 89 dd
RSP: 0018:ffffc9000429f760 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff888029adbec0 RCX: dffffc0000000000
RDX: dffffc0000000000 RSI: ffff8880b903f860 RDI: ffff888029adbec8
RBP: 0000000000000000 R08: ffff888018b99e07 R09: 1ffff110031733c0
R10: dffffc0000000000 R11: ffffed10031733c1 R12: ffff888029addcc0
R13: dffffc0000000000 R14: 1ffff1100535bb98 R15: ffff888029adbec1
FS:  0000555555d25500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32a1cff8 CR3: 0000000015f5c000 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
 __schedule_loop kernel/sched/core.c:6754 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6769
 futex_wait_queue+0x14e/0x1d0 kernel/futex/waitwake.c:370
 __futex_wait+0x17f/0x320 kernel/futex/waitwake.c:669
 futex_wait+0x101/0x360 kernel/futex/waitwake.c:697
 do_futex+0x33b/0x560 kernel/futex/syscalls.c:102
 __do_sys_futex kernel/futex/syscalls.c:179 [inline]
 __se_sys_futex+0x3f9/0x480 kernel/futex/syscalls.c:160
 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: 0033:0x7f4760579e79
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:00007ffde5b73058 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 000000000000fa91 RCX: 00007f4760579e79
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f4760716064
RBP: 00007f4760716064 R08: 00007f4760715f80 R09: 00007ffde5b7333f
R10: 00007ffde5b73150 R11: 0000000000000246 R12: 0000000000000032
R13: 00007ffde5b73150 R14: 00007ffde5b73170 R15: 000000000000fa5f
 </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:359 [inline]
RIP: 0010:rb_erase+0x6a9/0xe70 lib/rbtree.c:445
Code: 48 89 03 42 80 7c 2d 00 00 74 08 4c 89 ff e8 5e c4 44 f6 48 8b 1c 24 49 89 1f 4c 8d 7b 01 48 8b 6c 24 08 48 89 e8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 ef e8 38 c4 44 f6 4c 89 7d 00 48 89 dd
RSP: 0018:ffffc9000429f760 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff888029adbec0 RCX: dffffc0000000000
RDX: dffffc0000000000 RSI: ffff8880b903f860 RDI: ffff888029adbec8
RBP: 0000000000000000 R08: ffff888018b99e07 R09: 1ffff110031733c0
R10: dffffc0000000000 R11: ffffed10031733c1 R12: ffff888029addcc0
R13: dffffc0000000000 R14: 1ffff1100535bb98 R15: ffff888029adbec1
FS:  0000555555d25500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32a1cff8 CR3: 0000000015f5c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	48 89 03             	mov    %rax,(%rbx)
   3:	42 80 7c 2d 00 00    	cmpb   $0x0,0x0(%rbp,%r13,1)
   9:	74 08                	je     0x13
   b:	4c 89 ff             	mov    %r15,%rdi
   e:	e8 5e c4 44 f6       	call   0xf644c471
  13:	48 8b 1c 24          	mov    (%rsp),%rbx
  17:	49 89 1f             	mov    %rbx,(%r15)
  1a:	4c 8d 7b 01          	lea    0x1(%rbx),%r15
  1e:	48 8b 6c 24 08       	mov    0x8(%rsp),%rbp
  23:	48 89 e8             	mov    %rbp,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	48 89 ef             	mov    %rbp,%rdi
  34:	e8 38 c4 44 f6       	call   0xf644c471
  39:	4c 89 7d 00          	mov    %r15,0x0(%rbp)
  3d:	48 89 dd             	mov    %rbx,%rbp