Oops: general protection fault, probably for non-canonical address 0xdffffc000000000b: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000058-0x000000000000005f]
CPU: 1 UID: 0 PID: 22 Comm: migration/1 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
Stopper: 0x0 <- 0x0
RIP: 0010:pick_next_entity+0xca8/0xe90
Code: 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 bd ea 97 00 4c 3b 33 79 05 48 8b 6c 24 40 48 8d 5d 59 48 89 d8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 75 61 80 3b 00 74 14 48 8b 7c 24 70 48 89 ee
RSP: 0018:ffffc900001c7810 EFLAGS: 00010002
RAX: 000000000000000b RBX: 0000000000000059 RCX: 1ffff110478c75e7
RDX: 1ffff110478c75e4 RSI: ffff88823c63af00 RDI: ffff88823c63af20
RBP: 0000000000000000 R08: ffff8881032d2007 R09: 1ffff1102065a400
R10: dffffc0000000000 R11: ffffffff8196f0e0 R12: dffffc0000000000
R13: ffff88823c63af20 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8882a928d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000114d3e000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000004800 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 pick_task_fair+0xca/0x260
 pick_next_task_fair+0x173/0x1ab0
 __pick_next_task+0x391/0x480
 __schedule+0x974/0x5680
 schedule+0x164/0x360
 smpboot_thread_fn+0x5bc/0xa50
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:pick_next_entity+0xca8/0xe90
Code: 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 bd ea 97 00 4c 3b 33 79 05 48 8b 6c 24 40 48 8d 5d 59 48 89 d8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 75 61 80 3b 00 74 14 48 8b 7c 24 70 48 89 ee
RSP: 0018:ffffc900001c7810 EFLAGS: 00010002
RAX: 000000000000000b RBX: 0000000000000059 RCX: 1ffff110478c75e7
RDX: 1ffff110478c75e4 RSI: ffff88823c63af00 RDI: ffff88823c63af20
RBP: 0000000000000000 R08: ffff8881032d2007 R09: 1ffff1102065a400
R10: dffffc0000000000 R11: ffffffff8196f0e0 R12: dffffc0000000000
R13: ffff88823c63af20 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8882a928d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000114d3e000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000004800 DR6: 00000000ffff0ff0 DR7: 0000000000000400
