Oops: general protection fault, probably for non-canonical address 0xdffffc0000000014: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x00000000000000a0-0x00000000000000a7]
CPU: 1 PID: 1278 Comm: kworker/1:3 Not tainted 6.10.0-rc4-syzkaller-00148-g50736169ecc8 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue:  0x0 (events)
RIP: 0010:group_cfs_rq kernel/sched/sched.h:1474 [inline]
RIP: 0010:pick_task_fair+0x93/0x190 kernel/sched/fair.c:8453
Code: 89 f3 eb 3c 48 89 df e8 ab fe ff ff 84 c0 0f 85 85 00 00 00 48 89 df e8 ab 95 fd ff 48 8d b8 a0 00 00 00 48 89 fa 48 c1 ea 03 <80> 3c 2a 00 0f 85 bd 00 00 00 48 8b 98 a0 00 00 00 48 85 db 74 7b
RSP: 0018:ffffc9000481fc20 EFLAGS: 00010006
RAX: 0000000000000000 RBX: ffff88806b13ecc0 RCX: 1ffff1100d627da4
RDX: 0000000000000014 RSI: ffff888025558080 RDI: 00000000000000a0
RBP: dffffc0000000000 R08: 0000000000000000 R09: fffffbfff1fc8f92
R10: ffffffff8fe47c97 R11: 0000000000000001 R12: ffff88806b13ec00
R13: ffffed100d627d9a R14: ffff88806b13ecc0 R15: ffff88806b13ecd0
FS:  0000000000000000(0000) GS:ffff88806b100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa92fd9d988 CR3: 000000001e0bc000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 pick_task kernel/sched/core.c:6094 [inline]
 pick_next_task kernel/sched/core.c:6196 [inline]
 __schedule+0x2e53/0x5d00 kernel/sched/core.c:6701
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6837
 worker_thread+0x2de/0xf70 kernel/workqueue.c:3408
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:group_cfs_rq kernel/sched/sched.h:1474 [inline]
RIP: 0010:pick_task_fair+0x93/0x190 kernel/sched/fair.c:8453
Code: 89 f3 eb 3c 48 89 df e8 ab fe ff ff 84 c0 0f 85 85 00 00 00 48 89 df e8 ab 95 fd ff 48 8d b8 a0 00 00 00 48 89 fa 48 c1 ea 03 <80> 3c 2a 00 0f 85 bd 00 00 00 48 8b 98 a0 00 00 00 48 85 db 74 7b
RSP: 0018:ffffc9000481fc20 EFLAGS: 00010006
RAX: 0000000000000000 RBX: ffff88806b13ecc0 RCX: 1ffff1100d627da4
RDX: 0000000000000014 RSI: ffff888025558080 RDI: 00000000000000a0
RBP: dffffc0000000000 R08: 0000000000000000 R09: fffffbfff1fc8f92
R10: ffffffff8fe47c97 R11: 0000000000000001 R12: ffff88806b13ec00
R13: ffffed100d627d9a R14: ffff88806b13ecc0 R15: ffff88806b13ecd0
FS:  0000000000000000(0000) GS:ffff88806b100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa92fd9d988 CR3: 000000001e0bc000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	89 f3                	mov    %esi,%ebx
   2:	eb 3c                	jmp    0x40
   4:	48 89 df             	mov    %rbx,%rdi
   7:	e8 ab fe ff ff       	call   0xfffffeb7
   c:	84 c0                	test   %al,%al
   e:	0f 85 85 00 00 00    	jne    0x99
  14:	48 89 df             	mov    %rbx,%rdi
  17:	e8 ab 95 fd ff       	call   0xfffd95c7
  1c:	48 8d b8 a0 00 00 00 	lea    0xa0(%rax),%rdi
  23:	48 89 fa             	mov    %rdi,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	80 3c 2a 00          	cmpb   $0x0,(%rdx,%rbp,1) <-- trapping instruction
  2e:	0f 85 bd 00 00 00    	jne    0xf1
  34:	48 8b 98 a0 00 00 00 	mov    0xa0(%rax),%rbx
  3b:	48 85 db             	test   %rbx,%rbx
  3e:	74 7b                	je     0xbb