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: 6074 Comm: syz.2.53 Not tainted 6.17.0-rc1-syzkaller-00022-g07866544e410 #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:ffffc90006ad75c0 EFLAGS: 00010046
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffe8ffffc3cb50
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc90006ad7690 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000d5aec4 R12: 1ffffd1ffff87969
R13: ffffe8ffffc3cb48 R14: 0000000000000001 R15: 0000000000000000
FS:  00007fd636f186c0(0000) GS:ffff8881a3c1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe90ce5ed58 CR3: 0000000122554000 CR4: 00000000000006f0
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
 kobject_set_name_vargs+0xca/0x110
 kobject_set_name+0xd4/0x120
 kset_create_and_add+0x7b/0x170
 netdev_register_kobject+0x1a2/0x310
 register_netdevice+0x126c/0x1ae0
 tun_set_iff+0x844/0xef0
 __tun_chr_ioctl+0x788/0x1df0
 __se_sys_ioctl+0xfc/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd63618ebe9
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:00007fd636f18038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fd6363b5fa0 RCX: 00007fd63618ebe9
RDX: 00002000000000c0 RSI: 00000000400454ca RDI: 0000000000000006
RBP: 00007fd636211e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd6363b6038 R14: 00007fd6363b5fa0 R15: 00007ffd6c81e018
 </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:ffffc90006ad75c0 EFLAGS: 00010046
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffe8ffffc3cb50
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc90006ad7690 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000d5aec4 R12: 1ffffd1ffff87969
R13: ffffe8ffffc3cb48 R14: 0000000000000001 R15: 0000000000000000
FS:  00007fd636f186c0(0000) GS:ffff8881a3c1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe90ce5ed58 CR3: 0000000122554000 CR4: 00000000000006f0
