tmpfs: Bad value for 'mpol'
general protection fault, probably for non-canonical address 0xdffffc0000000014: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x00000000000000a0-0x00000000000000a7]
CPU: 0 PID: 7187 Comm: syz-executor.6 Not tainted 5.16.0-rc6-next-20211224 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
RIP: 0010:dequeue_load_avg kernel/sched/fair.c:3032 [inline]
RIP: 0010:reweight_entity+0x14f/0x440 kernel/sched/fair.c:3051
Code: 03 80 3c 02 00 0f 85 c6 02 00 00 48 8d bd a0 00 00 00 4c 8b b6 e0 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 76 02 00 00 48 8b 85 a0 00 00 00 4c 29 f0 0f 82
RSP: 0018:ffff88803fcdfd50 EFLAGS: 00010016
RAX: dffffc0000000000 RBX: 0000000000000017 RCX: 1ffff11007e76702
RDX: 0000000000000014 RSI: ffff88803f3b3600 RDI: 00000000000000a0
RBP: 0000000000000000 R08: ffff88803f3b3944 R09: ffff888019e6b580
R10: ffff88803f3b3810 R11: ffff88803f3b35f0 R12: 0000000000083800
R13: ffff88803f3b3638 R14: 0000000000000400 R15: 0000000000000000
FS:  00007f47822b3700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0b50459350 CR3: 00000000444e2000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 reweight_task+0x8a/0x120 kernel/sched/fair.c:3076
 set_load_weight kernel/sched/core.c:1236 [inline]
 set_user_nice.part.0+0x800/0xd00 kernel/sched/core.c:6925
 set_one_prio+0x241/0x340 kernel/sys.c:198
 __do_sys_setpriority+0x801/0xb80 kernel/sys.c:255
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0x90 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f4784da0b19
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f47822b3188 EFLAGS: 00000246 ORIG_RAX: 000000000000008d
RAX: ffffffffffffffda RBX: 00007f4784eb41a0 RCX: 00007f4784da0b19
RDX: 0000000000000003 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 00007f4784dfaf6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe2ae6449f R14: 00007f47822b3300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dequeue_load_avg kernel/sched/fair.c:3032 [inline]
RIP: 0010:reweight_entity+0x14f/0x440 kernel/sched/fair.c:3051
Code: 03 80 3c 02 00 0f 85 c6 02 00 00 48 8d bd a0 00 00 00 4c 8b b6 e0 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 76 02 00 00 48 8b 85 a0 00 00 00 4c 29 f0 0f 82
RSP: 0018:ffff88803fcdfd50 EFLAGS: 00010016
RAX: dffffc0000000000 RBX: 0000000000000017 RCX: 1ffff11007e76702
RDX: 0000000000000014 RSI: ffff88803f3b3600 RDI: 00000000000000a0
RBP: 0000000000000000 R08: ffff88803f3b3944 R09: ffff888019e6b580
R10: ffff88803f3b3810 R11: ffff88803f3b35f0 R12: 0000000000083800
R13: ffff88803f3b3638 R14: 0000000000000400 R15: 0000000000000000
FS:  00007f47822b3700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0b50459350 CR3: 00000000444e2000 CR4: 0000000000350ef0
note: syz-executor.6[7187] exited with preempt_count 2
----------------
Code disassembly (best guess):
   0:	03 80 3c 02 00 0f    	add    0xf00023c(%rax),%eax
   6:	85 c6                	test   %eax,%esi
   8:	02 00                	add    (%rax),%al
   a:	00 48 8d             	add    %cl,-0x73(%rax)
   d:	bd a0 00 00 00       	mov    $0xa0,%ebp
  12:	4c 8b b6 e0 00 00 00 	mov    0xe0(%rsi),%r14
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df
  23:	48 89 fa             	mov    %rdi,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2e:	0f 85 76 02 00 00    	jne    0x2aa
  34:	48 8b 85 a0 00 00 00 	mov    0xa0(%rbp),%rax
  3b:	4c 29 f0             	sub    %r14,%rax
  3e:	0f                   	.byte 0xf
  3f:	82                   	.byte 0x82