batman_adv: batadv0: Removing interface: batadv_slave_1 veth1_macvtap: left promiscuous mode veth0_macvtap: left promiscuous mode veth1_vlan: left promiscuous mode veth0_vlan: left promiscuous mode Oops: general protection fault, probably for non-canonical address 0xdffffc001fffc000: 0000 [#1] SMP KASAN NOPTI KASAN: probably user-memory-access in range [0x00000000fffe0000-0x00000000fffe0007] CPU: 3 UID: 0 PID: 6332 Comm: kworker/u32:11 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Workqueue: netns cleanup_net RIP: 0010:mld_clear_delrec+0x2f0/0x6d0 net/ipv6/mcast.c:840 Code: 20 00 0f 85 b4 03 00 00 49 8b 5d 28 49 c7 45 28 00 00 00 00 48 85 db 75 37 e9 d4 00 00 00 e8 07 64 71 f7 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 0f 85 70 03 00 00 48 8b 2b 48 8d 7b 30 48 89 de e8 RSP: 0018:ffffc9000465f5c8 EFLAGS: 00010206 RAX: 000000001fffc000 RBX: 00000000fffe0000 RCX: ffffffff8a4a2d7b RDX: ffff888034034880 RSI: ffffffff8a4a2d39 RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000002c10 R12: dffffc0000000000 R13: ffff88805327cc00 R14: ffff88803cb63000 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880d69bc000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055fc588e7ce8 CR3: 0000000033bc0000 CR4: 0000000000352ef0 Call Trace: ipv6_mc_destroy_dev+0x49/0x690 net/ipv6/mcast.c:2839 addrconf_ifdown.isra.0+0x1400/0x1aa0 net/ipv6/addrconf.c:3996 addrconf_notify+0x220/0x19e0 net/ipv6/addrconf.c:3776 notifier_call_chain+0xb9/0x410 kernel/notifier.c:85 call_netdevice_notifiers_info+0xbe/0x140 net/core/dev.c:2229 call_netdevice_notifiers_extack net/core/dev.c:2267 [inline] call_netdevice_notifiers net/core/dev.c:2281 [inline] unregister_netdevice_many_notify+0xf76/0x24c0 net/core/dev.c:12154 unregister_netdevice_many net/core/dev.c:12217 [inline] default_device_exit_batch+0x853/0xaf0 net/core/dev.c:12721 ops_exit_list net/core/net_namespace.c:204 [inline] ops_undo_list+0x363/0xab0 net/core/net_namespace.c:251 cleanup_net+0x408/0x890 net/core/net_namespace.c:682 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3236 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400 kthread+0x3c2/0x780 kernel/kthread.c:463 ret_from_fork+0x5d7/0x6f0 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:mld_clear_delrec+0x2f0/0x6d0 net/ipv6/mcast.c:840 Code: 20 00 0f 85 b4 03 00 00 49 8b 5d 28 49 c7 45 28 00 00 00 00 48 85 db 75 37 e9 d4 00 00 00 e8 07 64 71 f7 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 0f 85 70 03 00 00 48 8b 2b 48 8d 7b 30 48 89 de e8 RSP: 0018:ffffc9000465f5c8 EFLAGS: 00010206 RAX: 000000001fffc000 RBX: 00000000fffe0000 RCX: ffffffff8a4a2d7b RDX: ffff888034034880 RSI: ffffffff8a4a2d39 RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000002c10 R12: dffffc0000000000 R13: ffff88805327cc00 R14: ffff88803cb63000 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880d66bc000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000562d60b3eb00 CR3: 000000002d575000 CR4: 0000000000352ef0 ---------------- Code disassembly (best guess): 0: 20 00 and %al,(%rax) 2: 0f 85 b4 03 00 00 jne 0x3bc 8: 49 8b 5d 28 mov 0x28(%r13),%rbx c: 49 c7 45 28 00 00 00 movq $0x0,0x28(%r13) 13: 00 14: 48 85 db test %rbx,%rbx 17: 75 37 jne 0x50 19: e9 d4 00 00 00 jmp 0xf2 1e: e8 07 64 71 f7 call 0xf771642a 23: 48 89 d8 mov %rbx,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction 2f: 0f 85 70 03 00 00 jne 0x3a5 35: 48 8b 2b mov (%rbx),%rbp 38: 48 8d 7b 30 lea 0x30(%rbx),%rdi 3c: 48 89 de mov %rbx,%rsi 3f: e8 .byte 0xe8