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: 5443 Comm: syz.0.26 Not tainted 6.11.0-rc4-next-20240820-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 6e 66 48 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 48 66 48 f6 4c 89 7d 00 48 89 dd
RSP: 0018:ffffc90004b9f8e8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff888021153ec0 RCX: dffffc0000000000
RDX: ffffc90003fdb000 RSI: ffff8880b903f860 RDI: ffff8880211502c8
RBP: 0000000000000000 R08: ffffffff8bac96c8 R09: fffff52000973f54
R10: dffffc0000000000 R11: fffff52000973f54 R12: ffff888021153ec0
R13: dffffc0000000000 R14: 1ffff1100422a7d8 R15: ffff888021153ec1
FS:  00007f968d7d66c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32d1cff8 CR3: 000000002c6d8000 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 kernel/sched/core.c:2031 [inline]
 __do_set_cpus_allowed+0x4de/0x580 kernel/sched/core.c:2682
 __set_cpus_allowed_ptr_locked+0x363/0x16c0 kernel/sched/core.c:3070
 __set_cpus_allowed_ptr+0x1d4/0x240 kernel/sched/core.c:3104
 __sched_setaffinity+0x18f/0x370 kernel/sched/syscalls.c:1324
 sched_setaffinity+0x345/0x4b0 kernel/sched/syscalls.c:1402
 __do_sys_sched_setaffinity kernel/sched/syscalls.c:1438 [inline]
 __se_sys_sched_setaffinity kernel/sched/syscalls.c:1427 [inline]
 __x64_sys_sched_setaffinity+0x132/0x180 kernel/sched/syscalls.c:1427
 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: 0033:0x7f968c979e79
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:00007f968d7d6038 EFLAGS: 00000246 ORIG_RAX: 00000000000000cb
RAX: ffffffffffffffda RBX: 00007f968cb15f80 RCX: 00007f968c979e79
RDX: 0000000020000200 RSI: 0000000000000008 RDI: 0000000000000000
RBP: 00007f968c9e7916 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f968cb15f80 R15: 00007ffe615f7988
 </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 6e 66 48 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 48 66 48 f6 4c 89 7d 00 48 89 dd
RSP: 0018:ffffc90004b9f8e8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff888021153ec0 RCX: dffffc0000000000
RDX: ffffc90003fdb000 RSI: ffff8880b903f860 RDI: ffff8880211502c8
RBP: 0000000000000000 R08: ffffffff8bac96c8 R09: fffff52000973f54
R10: dffffc0000000000 R11: fffff52000973f54 R12: ffff888021153ec0
R13: dffffc0000000000 R14: 1ffff1100422a7d8 R15: ffff888021153ec1
FS:  00007f968d7d66c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32d1cff8 CR3: 000000002c6d8000 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 6e 66 48 f6       	call   0xf6486681
  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 48 66 48 f6       	call   0xf6486681
  39:	4c 89 7d 00          	mov    %r15,0x0(%rbp)
  3d:	48 89 dd             	mov    %rbx,%rbp