veth1_macvtap: left promiscuous mode veth0_macvtap: left promiscuous mode veth1_vlan: left promiscuous mode Oops: general protection fault, probably for non-canonical address 0xdffffc001fffe1ac: 0000 [#1] SMP KASAN PTI KASAN: probably user-memory-access in range [0x00000000ffff0d60-0x00000000ffff0d67] CPU: 1 UID: 0 PID: 59 Comm: kworker/u8:4 Not tainted 6.15.0-syzkaller-10820-gcd2e103d57e5 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: netns cleanup_net RIP: 0010:ip_mc_hash_remove net/ipv4/igmp.c:1431 [inline] RIP: 0010:__ip_mc_dec_group+0x2fd/0x690 net/ipv4/igmp.c:1774 Code: 39 32 d9 f7 c6 05 24 72 a2 05 01 48 c7 c7 40 cc 9a 8c be 97 05 00 00 48 c7 c2 c0 cc 9a 8c e8 ba 33 b7 f7 4c 89 e3 48 c1 eb 03 <42> 80 3c 2b 00 74 08 4c 89 e7 e8 c4 8f 3a f8 4d 8b 2c 24 4d 39 f5 RSP: 0018:ffffc9000210f378 EFLAGS: 00010206 RAX: ffffffff89e7076e RBX: 000000001fffe1ac RCX: ffff88801a53bc00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffff888058870c20 R08: ffffffff8f4f8ee7 R09: 1ffffffff1e9f1dc R10: dffffc0000000000 R11: fffffbfff1e9f1dd R12: 00000000ffff0d60 R13: dffffc0000000000 R14: ffff88802827ce00 R15: 1ffff1100b10e184 FS: 0000000000000000(0000) GS:ffff888125d95000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000020000001f000 CR3: 0000000064920000 CR4: 00000000003526f0 Call Trace: inetdev_event+0x2a7/0x15b0 net/ipv4/devinet.c:1642 notifier_call_chain+0x1b6/0x3e0 kernel/notifier.c:85 call_netdevice_notifiers_extack net/core/dev.c:2268 [inline] call_netdevice_notifiers net/core/dev.c:2282 [inline] dev_close_many+0x29c/0x410 net/core/dev.c:1785 unregister_netdevice_many_notify+0x834/0x2320 net/core/dev.c:12046 unregister_netdevice_many net/core/dev.c:12139 [inline] default_device_exit_batch+0x819/0x890 net/core/dev.c:12643 ops_exit_list net/core/net_namespace.c:206 [inline] ops_undo_list+0x522/0x990 net/core/net_namespace.c:253 cleanup_net+0x4c5/0x800 net/core/net_namespace.c:686 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402 kthread+0x711/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3fc/0x770 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:ip_mc_hash_remove net/ipv4/igmp.c:1431 [inline] RIP: 0010:__ip_mc_dec_group+0x2fd/0x690 net/ipv4/igmp.c:1774 Code: 39 32 d9 f7 c6 05 24 72 a2 05 01 48 c7 c7 40 cc 9a 8c be 97 05 00 00 48 c7 c2 c0 cc 9a 8c e8 ba 33 b7 f7 4c 89 e3 48 c1 eb 03 <42> 80 3c 2b 00 74 08 4c 89 e7 e8 c4 8f 3a f8 4d 8b 2c 24 4d 39 f5 RSP: 0018:ffffc9000210f378 EFLAGS: 00010206 RAX: ffffffff89e7076e RBX: 000000001fffe1ac RCX: ffff88801a53bc00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffff888058870c20 R08: ffffffff8f4f8ee7 R09: 1ffffffff1e9f1dc R10: dffffc0000000000 R11: fffffbfff1e9f1dd R12: 00000000ffff0d60 R13: dffffc0000000000 R14: ffff88802827ce00 R15: 1ffff1100b10e184 FS: 0000000000000000(0000) GS:ffff888125d95000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000027000 CR3: 0000000064920000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess): 0: 39 32 cmp %esi,(%rdx) 2: d9 f7 fincstp 4: c6 05 24 72 a2 05 01 movb $0x1,0x5a27224(%rip) # 0x5a2722f b: 48 c7 c7 40 cc 9a 8c mov $0xffffffff8c9acc40,%rdi 12: be 97 05 00 00 mov $0x597,%esi 17: 48 c7 c2 c0 cc 9a 8c mov $0xffffffff8c9accc0,%rdx 1e: e8 ba 33 b7 f7 call 0xf7b733dd 23: 4c 89 e3 mov %r12,%rbx 26: 48 c1 eb 03 shr $0x3,%rbx * 2a: 42 80 3c 2b 00 cmpb $0x0,(%rbx,%r13,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 4c 89 e7 mov %r12,%rdi 34: e8 c4 8f 3a f8 call 0xf83a8ffd 39: 4d 8b 2c 24 mov (%r12),%r13 3d: 4d 39 f5 cmp %r14,%r13