general protection fault, probably for non-canonical address 0xdffffc0000000080: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000400-0x0000000000000407]
CPU: 1 PID: 5864 Comm: syz-executor.3 Not tainted 5.8.0-rc5-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
RIP: 0010:netif_free_tx_queues net/core/dev.c:9357 [inline]
RIP: 0010:free_netdev+0x41/0x480 net/core/dev.c:10028
Code: d2 be 2b 27 00 00 48 c7 c7 e0 c6 fd 88 e8 a7 37 1c fb 48 8d bd 00 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 f4 03 00 00 48 8b bd 00 04 00 00 e8 59 b0 69 fb
RSP: 0018:ffffc90004327930 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff888022a86000 RCX: ffffc90022613000
RDX: 0000000000000080 RSI: ffffffff89bc1100 RDI: 0000000000000400
RBP: 0000000000000000 R08: 0000000000000001 R09: ffff888012cd0463
R10: 0000000000000000 R11: 0000000000000000 R12: 00000000fffffff4
R13: ffff88805bfdc410 R14: ffff888028226800 R15: ffff88806b1195f8
FS:  00007fc7219e3700(0000) GS:ffff88802cf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffdf34bed40 CR3: 000000004e0a0000 CR4: 0000000000340ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ip6gre_init_net+0x546/0x610 net/ipv6/ip6_gre.c:1595
 ops_init+0xaf/0x470 net/core/net_namespace.c:151
 setup_net+0x2d8/0x850 net/core/net_namespace.c:341
 copy_net_ns+0x2cf/0x5e0 net/core/net_namespace.c:482
 create_new_namespaces+0x3f6/0xb10 kernel/nsproxy.c:110
 copy_namespaces+0x385/0x470 kernel/nsproxy.c:179
 copy_process+0x2b0b/0x6d90 kernel/fork.c:2101
 _do_fork+0x12c/0xa70 kernel/fork.c:2443
 __do_sys_clone+0xef/0x150 kernel/fork.c:2599
 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:384
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45c049
Code: Bad RIP value.
RSP: 002b:00007fc7219e2c88 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00000000006f0440 RCX: 000000000045c049
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000070024000
RBP: 00000000004a906e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000074bf00
R13: 00007ffdc5f4a6cf R14: 00007fc7219c3000 R15: 0000000000000003
Modules linked in:
---[ end trace 1f832ee66475c045 ]---
RIP: 0010:netif_free_tx_queues net/core/dev.c:9357 [inline]
RIP: 0010:free_netdev+0x41/0x480 net/core/dev.c:10028
Code: d2 be 2b 27 00 00 48 c7 c7 e0 c6 fd 88 e8 a7 37 1c fb 48 8d bd 00 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 f4 03 00 00 48 8b bd 00 04 00 00 e8 59 b0 69 fb
RSP: 0018:ffffc90004327930 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff888022a86000 RCX: ffffc90022613000
RDX: 0000000000000080 RSI: ffffffff89bc1100 RDI: 0000000000000400
RBP: 0000000000000000 R08: 0000000000000001 R09: ffff888012cd0463
R10: 0000000000000000 R11: 0000000000000000 R12: 00000000fffffff4
R13: ffff88805bfdc410 R14: ffff888028226800 R15: ffff88806b1195f8
FS:  00007fc7219e3700(0000) GS:ffff88802cf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9f18203dd0 CR3: 000000004e0a0000 CR4: 0000000000340ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400