Oops: general protection fault, probably for non-canonical address 0xdffffc000000000a: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000050-0x0000000000000057]
CPU: 1 UID: 0 PID: 5286 Comm: kworker/1:5 Not tainted 6.11.0-rc4-next-20240822-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:pick_next_entity kernel/sched/fair.c:5613 [inline]
RIP: 0010:pick_task_fair+0xc3/0x280 kernel/sched/fair.c:8742
Code: 00 00 80 3b 00 74 08 4c 89 ef e8 58 7d 01 00 0f 1f 44 00 00 4c 89 ef e8 6b f8 01 00 49 89 c4 48 8d 58 51 48 89 d8 48 c1 e8 03 <0f> b6 04 28 84 c0 75 5e 80 3b 00 74 2e 48 8b 3c 24 4c 89 e6 ba 01
RSP: 0018:ffffc900040b7778 EFLAGS: 00010006
RAX: 000000000000000a RBX: 0000000000000051 RCX: 1ffff11003da2205
RDX: 0000000000000070 RSI: dffffc0000000000 RDI: ffff88801ed11028
RBP: dffffc0000000000 R08: ffffffff901c12ef R09: 1ffffffff203825d
R10: dffffc0000000000 R11: ffffffff81666610 R12: 0000000000000000
R13: ffff88801ed11000 R14: ffff8880b913eb10 R15: 1ffff11017227d62
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f16306456c0 CR3: 00000000686fe000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 pick_task kernel/sched/core.c:6028 [inline]
 pick_next_task kernel/sched/core.c:6130 [inline]
 __schedule+0x2eab/0x4b30 kernel/sched/core.c:6632
 preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6856
 preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6880
 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
 __raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
 _raw_spin_unlock+0x3e/0x50 kernel/locking/spinlock.c:186
 spin_unlock include/linux/spinlock.h:391 [inline]
 nsim_dev_trap_report drivers/net/netdevsim/dev.c:823 [inline]
 nsim_dev_trap_report_work+0x9ca/0xaa0 drivers/net/netdevsim/dev.c:850
 process_one_work kernel/workqueue.c:3232 [inline]
 process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3313
 worker_thread+0x86d/0xd10 kernel/workqueue.c:3390
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/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:pick_next_entity kernel/sched/fair.c:5613 [inline]
RIP: 0010:pick_task_fair+0xc3/0x280 kernel/sched/fair.c:8742
Code: 00 00 80 3b 00 74 08 4c 89 ef e8 58 7d 01 00 0f 1f 44 00 00 4c 89 ef e8 6b f8 01 00 49 89 c4 48 8d 58 51 48 89 d8 48 c1 e8 03 <0f> b6 04 28 84 c0 75 5e 80 3b 00 74 2e 48 8b 3c 24 4c 89 e6 ba 01
RSP: 0018:ffffc900040b7778 EFLAGS: 00010006
RAX: 000000000000000a RBX: 0000000000000051 RCX: 1ffff11003da2205
RDX: 0000000000000070 RSI: dffffc0000000000 RDI: ffff88801ed11028
RBP: dffffc0000000000 R08: ffffffff901c12ef R09: 1ffffffff203825d
R10: dffffc0000000000 R11: ffffffff81666610 R12: 0000000000000000
R13: ffff88801ed11000 R14: ffff8880b913eb10 R15: 1ffff11017227d62
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f16306456c0 CR3: 00000000686fe000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	80 3b 00             	cmpb   $0x0,(%rbx)
   5:	74 08                	je     0xf
   7:	4c 89 ef             	mov    %r13,%rdi
   a:	e8 58 7d 01 00       	call   0x17d67
   f:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  14:	4c 89 ef             	mov    %r13,%rdi
  17:	e8 6b f8 01 00       	call   0x1f887
  1c:	49 89 c4             	mov    %rax,%r12
  1f:	48 8d 58 51          	lea    0x51(%rax),%rbx
  23:	48 89 d8             	mov    %rbx,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	0f b6 04 28          	movzbl (%rax,%rbp,1),%eax <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	75 5e                	jne    0x90
  32:	80 3b 00             	cmpb   $0x0,(%rbx)
  35:	74 2e                	je     0x65
  37:	48 8b 3c 24          	mov    (%rsp),%rdi
  3b:	4c 89 e6             	mov    %r12,%rsi
  3e:	ba                   	.byte 0xba
  3f:	01                   	.byte 0x1