team0 (unregistering): Port device team_slave_1 removed team0 (unregistering): Port device team_slave_0 removed bond0 (unregistering): (slave bond_slave_1): Releasing backup interface general protection fault, probably for non-canonical address 0xdffffc000000000e: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000070-0x0000000000000077] CPU: 0 PID: 27322 Comm: kworker/u4:0 Not tainted 5.16.0-rc2-next-20211125-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net RIP: 0010:kernfs_find_ns+0x31/0x370 fs/kernfs/dir.c:787 Code: 49 89 d6 41 55 41 54 55 48 89 fd 53 48 83 ec 08 e8 f4 99 7d ff 48 8d 7d 70 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 1e 03 00 00 48 8d bd 98 00 00 00 48 8b 5d 70 48 RSP: 0018:ffffc90002c4f8f0 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffffffff8aaf0180 RCX: 0000000000000000 RDX: 000000000000000e RSI: ffffffff81fa4aec RDI: 0000000000000070 RBP: 0000000000000000 R08: 0000000000000001 R09: ffffffff8bd5c78f R10: fffffbfff17ab8f1 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff8aaf0140 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2ce23000 CR3: 000000003a4e5000 CR4: 00000000003526f0 Call Trace: kernfs_find_and_get_ns+0x2d/0x60 fs/kernfs/dir.c:864 kernfs_find_and_get include/linux/kernfs.h:549 [inline] sysfs_remove_group+0x6f/0x170 fs/sysfs/group.c:276 netdev_queue_update_kobjects+0x308/0x460 net/core/net-sysfs.c:1711 remove_queue_kobjects net/core/net-sysfs.c:1810 [inline] netdev_unregister_kobject+0x15b/0x1f0 net/core/net-sysfs.c:1960 unregister_netdevice_many+0xd35/0x1850 net/core/dev.c:10423 default_device_exit_batch+0x2fa/0x3c0 net/core/dev.c:10926 ops_exit_list+0x10d/0x160 net/core/net_namespace.c:171 cleanup_net+0x4ea/0xb00 net/core/net_namespace.c:593 process_one_work+0x9b2/0x1690 kernel/workqueue.c:2299 worker_thread+0x658/0x11f0 kernel/workqueue.c:2446 kthread+0x405/0x4f0 kernel/kthread.c:345 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Modules linked in: ---[ end trace cb02aa2ca9666452 ]--- RIP: 0010:kernfs_find_ns+0x31/0x370 fs/kernfs/dir.c:787 Code: 49 89 d6 41 55 41 54 55 48 89 fd 53 48 83 ec 08 e8 f4 99 7d ff 48 8d 7d 70 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 1e 03 00 00 48 8d bd 98 00 00 00 48 8b 5d 70 48 RSP: 0018:ffffc90002c4f8f0 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffffffff8aaf0180 RCX: 0000000000000000 RDX: 000000000000000e RSI: ffffffff81fa4aec RDI: 0000000000000070 RBP: 0000000000000000 R08: 0000000000000001 R09: ffffffff8bd5c78f R10: fffffbfff17ab8f1 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff8aaf0140 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffb2ad25000 CR3: 00000001691a2000 CR4: 00000000003526e0 ---------------- Code disassembly (best guess): 0: 49 89 d6 mov %rdx,%r14 3: 41 55 push %r13 5: 41 54 push %r12 7: 55 push %rbp 8: 48 89 fd mov %rdi,%rbp b: 53 push %rbx c: 48 83 ec 08 sub $0x8,%rsp 10: e8 f4 99 7d ff callq 0xff7d9a09 15: 48 8d 7d 70 lea 0x70(%rbp),%rdi 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 1e 03 00 00 jne 0x352 34: 48 8d bd 98 00 00 00 lea 0x98(%rbp),%rdi 3b: 48 8b 5d 70 mov 0x70(%rbp),%rbx 3f: 48 rex.W