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: 6121 Comm: syz.2.115 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_erase_color lib/rbtree.c:354 [inline]
RIP: 0010:rb_erase+0x61f/0xe70 lib/rbtree.c:445
Code: 00 49 8d 5f 10 48 89 d8 48 c1 e8 03 48 89 44 24 18 42 80 3c 28 00 74 08 48 89 df e8 eb c3 44 f6 4c 8b 23 4d 89 e6 49 c1 ee 03 <43> 80 3c 2e 00 74 08 4c 89 e7 e8 d2 c3 44 f6 41 f6 04 24 01 48 89
RSP: 0018:ffffc9000938f760 EFLAGS: 00010046
RAX: 1ffff1100416eb9a RBX: ffff888020b75cd0 RCX: dffffc0000000000
RDX: dffffc0000000000 RSI: ffff8880b903f860 RDI: ffff888063643ec8
RBP: ffff888020b75cc8 R08: ffff888063643c07 R09: 1ffff1100c6c8780
R10: dffffc0000000000 R11: ffffed100c6c8781 R12: 0000000000000000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888020b75cc0
FS:  000055558caf5500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa1d0892ba8 CR3: 0000000078cec000 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: 0033:0x7f438bf79e79
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:00007ffc810de638 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 000000000002ce5d RCX: 00007f438bf79e79
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f438c115f8c
RBP: 00007f438c115f8c R08: 00007f438c115f80 R09: 00007ffc810de91f
R10: 00007ffc810de730 R11: 0000000000000246 R12: 0000000000000032
R13: 00007ffc810de730 R14: 00007ffc810de750 R15: 000000000002ce2b
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:____rb_erase_color lib/rbtree.c:354 [inline]
RIP: 0010:rb_erase+0x61f/0xe70 lib/rbtree.c:445
Code: 00 49 8d 5f 10 48 89 d8 48 c1 e8 03 48 89 44 24 18 42 80 3c 28 00 74 08 48 89 df e8 eb c3 44 f6 4c 8b 23 4d 89 e6 49 c1 ee 03 <43> 80 3c 2e 00 74 08 4c 89 e7 e8 d2 c3 44 f6 41 f6 04 24 01 48 89
RSP: 0018:ffffc9000938f760 EFLAGS: 00010046
RAX: 1ffff1100416eb9a RBX: ffff888020b75cd0 RCX: dffffc0000000000
RDX: dffffc0000000000 RSI: ffff8880b903f860 RDI: ffff888063643ec8
RBP: ffff888020b75cc8 R08: ffff888063643c07 R09: 1ffff1100c6c8780
R10: dffffc0000000000 R11: ffffed100c6c8781 R12: 0000000000000000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888020b75cc0
FS:  000055558caf5500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa1d0892ba8 CR3: 0000000078cec000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	00 49 8d             	add    %cl,-0x73(%rcx)
   3:	5f                   	pop    %rdi
   4:	10 48 89             	adc    %cl,-0x77(%rax)
   7:	d8 48 c1             	fmuls  -0x3f(%rax)
   a:	e8 03 48 89 44       	call   0x44894812
   f:	24 18                	and    $0x18,%al
  11:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)
  16:	74 08                	je     0x20
  18:	48 89 df             	mov    %rbx,%rdi
  1b:	e8 eb c3 44 f6       	call   0xf644c40b
  20:	4c 8b 23             	mov    (%rbx),%r12
  23:	4d 89 e6             	mov    %r12,%r14
  26:	49 c1 ee 03          	shr    $0x3,%r14
* 2a:	43 80 3c 2e 00       	cmpb   $0x0,(%r14,%r13,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	4c 89 e7             	mov    %r12,%rdi
  34:	e8 d2 c3 44 f6       	call   0xf644c40b
  39:	41 f6 04 24 01       	testb  $0x1,(%r12)
  3e:	48                   	rex.W
  3f:	89                   	.byte 0x89