general protection fault, probably for non-canonical address 0xdffffc0000000014: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000000a0-0x00000000000000a7]
CPU: 0 PID: 18096 Comm: syz-executor.4 Not tainted 5.17.0-rc2-next-20220204-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:dequeue_load_avg kernel/sched/fair.c:3033 [inline]
RIP: 0010:reweight_entity+0x11c/0x570 kernel/sched/fair.c:3055
Code: 03 80 3c 11 00 0f 85 03 04 00 00 48 8d bd a0 00 00 00 4c 8b a3 e0 00 00 00 48 ba 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 <80> 3c 11 00 0f 85 c8 03 00 00 48 8b 95 a0 00 00 00 4c 29 e2 0f 82
RSP: 0018:ffffc9000bac7d40 EFLAGS: 00010006
RAX: 0000000000003c00 RBX: ffff88807c971dc0 RCX: 0000000000000014
RDX: dffffc0000000000 RSI: ffff88807c971dc0 RDI: 00000000000000a0
RBP: 0000000000000000 R08: ffff88807c97214c R09: ffff88801c25ba80
R10: ffff88807c971fd0 R11: ffff88807c971db0 R12: 0000000000000400
R13: ffff88807c971df8 R14: 1ffff92001758fbe R15: ffff8880b9c3ab98
FS:  00007fb1fa1fc700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb1fb396000 CR3: 0000000068a91000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 reweight_task+0x94/0x160 kernel/sched/fair.c:3080
 set_load_weight kernel/sched/core.c:1237 [inline]
 set_user_nice.part.0+0x837/0x1120 kernel/sched/core.c:6937
 set_one_prio+0x241/0x340 kernel/sys.c:198
 __do_sys_setpriority+0x302/0xb80 kernel/sys.c:239
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fb1fb287059
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb1fa1fc168 EFLAGS: 00000246 ORIG_RAX: 000000000000008d
RAX: ffffffffffffffda RBX: 00007fb1fb399f60 RCX: 00007fb1fb287059
RDX: 0000000000000101 RSI: 000000000000192e RDI: 0000000000000001
RBP: 00007fb1fb2e108d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffd654d68f R14: 00007fb1fa1fc300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dequeue_load_avg kernel/sched/fair.c:3033 [inline]
RIP: 0010:reweight_entity+0x11c/0x570 kernel/sched/fair.c:3055
Code: 03 80 3c 11 00 0f 85 03 04 00 00 48 8d bd a0 00 00 00 4c 8b a3 e0 00 00 00 48 ba 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 <80> 3c 11 00 0f 85 c8 03 00 00 48 8b 95 a0 00 00 00 4c 29 e2 0f 82
RSP: 0018:ffffc9000bac7d40 EFLAGS: 00010006
RAX: 0000000000003c00 RBX: ffff88807c971dc0 RCX: 0000000000000014
RDX: dffffc0000000000 RSI: ffff88807c971dc0 RDI: 00000000000000a0
RBP: 0000000000000000 R08: ffff88807c97214c R09: ffff88801c25ba80
R10: ffff88807c971fd0 R11: ffff88807c971db0 R12: 0000000000000400
R13: ffff88807c971df8 R14: 1ffff92001758fbe R15: ffff8880b9c3ab98
FS:  00007fb1fa1fc700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb1fb396000 CR3: 0000000068a91000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	03 80 3c 11 00 0f    	add    0xf00113c(%rax),%eax
   6:	85 03                	test   %eax,(%rbx)
   8:	04 00                	add    $0x0,%al
   a:	00 48 8d             	add    %cl,-0x73(%rax)
   d:	bd a0 00 00 00       	mov    $0xa0,%ebp
  12:	4c 8b a3 e0 00 00 00 	mov    0xe0(%rbx),%r12
  19:	48 ba 00 00 00 00 00 	movabs $0xdffffc0000000000,%rdx
  20:	fc ff df
  23:	48 89 f9             	mov    %rdi,%rcx
  26:	48 c1 e9 03          	shr    $0x3,%rcx
* 2a:	80 3c 11 00          	cmpb   $0x0,(%rcx,%rdx,1) <-- trapping instruction
  2e:	0f 85 c8 03 00 00    	jne    0x3fc
  34:	48 8b 95 a0 00 00 00 	mov    0xa0(%rbp),%rdx
  3b:	4c 29 e2             	sub    %r12,%rdx
  3e:	0f                   	.byte 0xf
  3f:	82                   	.byte 0x82