Oops: general protection fault, probably for non-canonical address 0xdffffc000000000b: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000058-0x000000000000005f]
CPU: 0 UID: 0 PID: 6139 Comm: syz.2.108 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:pick_task_fair+0xd6/0x2a0
Code: 00 74 08 4c 89 ff e8 59 e2 01 00 0f 1f 44 00 00 31 ed 4c 89 ff be 01 00 00 00 e8 a5 f3 01 00 4c 8d 78 59 4c 89 f9 48 c1 e9 03 <42> 0f b6 0c 29 84 c9 75 6b 41 80 3f 00 74 34 48 8b 7c 24 08 48 89
RSP: 0000:ffffc90004747a20 EFLAGS: 00010002
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000000000000000b
RDX: 1ffff110242075e7 RSI: 1ffff110242075e4 RDI: ffff88812103af20
RBP: 0000000000000000 R08: ffff8881103d0007 R09: 1ffff1102207a000
R10: dffffc0000000000 R11: ffffed102207a001 R12: ffff888111a42058
R13: dffffc0000000000 R14: 1ffff110242075e2 R15: 0000000000000059
FS:  000055557dc23500(0000) GS:ffff88818dc93000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32efeff8 CR3: 000000011ad22000 CR4: 0000000000352ef0
DR0: 0000000000007800 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 pick_next_task_fair+0x173/0x1ab0
 __pick_next_task+0xe6/0x480
 __schedule+0x974/0x5680
 schedule+0x164/0x360
 irqentry_exit+0x263/0x730
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0033:0x7ff070e507a0
Code: 41 5e c3 0f 1f 80 00 00 00 00 c3 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 c3 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 <41> 89 fb 44 8d 56 04 4c 8d 0d 52 18 3b 00 89 f0 4c 8d 05 49 f8 3a
RSP: 002b:00007ffd2f500c58 EFLAGS: 00000246
RAX: ffffffff8146e769 RBX: ffffffff815abcc7 RCX: ffffffff8146e769
RDX: ffffffff815abcc7 RSI: ffffffff815abcc7 RDI: 0000000000000008
RBP: 0000000000000763 R08: 00007ff071200000 R09: 00007ff071202000
R10: 000000008146e76d R11: 0000000000000008 R12: 00007ff071216038
R13: 0000000000053b28 R14: ffffffff815abcc7 R15: 00007ff071d45720
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:pick_task_fair+0xd6/0x2a0
Code: 00 74 08 4c 89 ff e8 59 e2 01 00 0f 1f 44 00 00 31 ed 4c 89 ff be 01 00 00 00 e8 a5 f3 01 00 4c 8d 78 59 4c 89 f9 48 c1 e9 03 <42> 0f b6 0c 29 84 c9 75 6b 41 80 3f 00 74 34 48 8b 7c 24 08 48 89
RSP: 0000:ffffc90004747a20 EFLAGS: 00010002
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 000000000000000b
RDX: 1ffff110242075e7 RSI: 1ffff110242075e4 RDI: ffff88812103af20
RBP: 0000000000000000 R08: ffff8881103d0007 R09: 1ffff1102207a000
R10: dffffc0000000000 R11: ffffed102207a001 R12: ffff888111a42058
R13: dffffc0000000000 R14: 1ffff110242075e2 R15: 0000000000000059
FS:  000055557dc23500(0000) GS:ffff88818dc93000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32efeff8 CR3: 000000011ad22000 CR4: 0000000000352ef0
DR0: 0000000000007800 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
