Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 UID: 0 PID: 8374 Comm: syz.1.860 Not tainted 6.17.0-rc1-syzkaller-00022-g07866544e410-dirty #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:__pcpu_freelist_pop+0x6b7/0x8c0
Code: 10 48 3b 8c 24 80 00 00 00 0f 85 b4 01 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d e9 c1 3d 9a 09 cc 48 89 f8 48 c1 e8 03 <80> 3c 18 00 48 89 7c 24 20 74 0a e8 c9 3f 41 00 48 8b 7c 24 20 48
RSP: 0018:ffffc90007d57480 EFLAGS: 00010046
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffe8ffffc35b58
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc90007d57550 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000faae9c R12: 1ffffd1ffff86b6a
R13: ffffe8ffffc35b50 R14: 0000000000000001 R15: 0000000000000000
FS:  00005555950da500(0000) GS:ffff8881a3c1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000017c0 CR3: 000000003cc96000 CR4: 00000000000006f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 pcpu_freelist_pop+0xca/0x170
 __bpf_get_stackid+0x574/0xcf0
 bpf_get_stackid_raw_tp+0x196/0x210
 bpf_prog_b724608cae728045+0x27/0x2f
 bpf_trace_run2+0x284/0x4b0
 kfree+0x3a0/0x440
 ref_tracker_free+0x4dd/0x7d0
 __qdisc_destroy+0x1ba/0x420
 dev_shutdown+0x93/0x440
 unregister_netdevice_many_notify+0xe0f/0x1ff0
 unregister_netdevice_queue+0x33c/0x380
 __tun_detach+0xda4/0x1560
 tun_chr_close+0x10a/0x1c0
 __fput+0x44c/0xa70
 task_work_run+0x1d4/0x260
 exit_to_user_mode_loop+0xec/0x110
 do_syscall_64+0x2bd/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0c3938ebe9
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffb4241c38 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f0c395b7da0 RCX: 00007f0c3938ebe9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f0c395b7da0 R08: 0000000000000130 R09: 00000012b4241f2f
R10: 00000000003ffcac R11: 0000000000000246 R12: 000000000001d3b1
R13: 00007f0c395b6090 R14: ffffffffffffffff R15: 00007fffb4241d50
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__pcpu_freelist_pop+0x6b7/0x8c0
Code: 10 48 3b 8c 24 80 00 00 00 0f 85 b4 01 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d e9 c1 3d 9a 09 cc 48 89 f8 48 c1 e8 03 <80> 3c 18 00 48 89 7c 24 20 74 0a e8 c9 3f 41 00 48 8b 7c 24 20 48
RSP: 0018:ffffc90007d57480 EFLAGS: 00010046
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffe8ffffc35b58
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc90007d57550 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000faae9c R12: 1ffffd1ffff86b6a
R13: ffffe8ffffc35b50 R14: 0000000000000001 R15: 0000000000000000
FS:  00005555950da500(0000) GS:ffff8881a3c1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000017c0 CR3: 000000003cc96000 CR4: 00000000000006f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
