IPVS: ftp: loaded support on port[0] = 21 BUG: unable to handle page fault for address: ffffc90000cd2030 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 10000067 P4D 10000067 PUD 101ab067 PMD 10a9e067 PTE 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 9155 Comm: syz-executor.5 Not tainted 5.11.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:bpf_dispatcher_nop_func include/linux/bpf.h:651 [inline] RIP: 0010:__bpf_trace_run kernel/trace/bpf_trace.c:2088 [inline] RIP: 0010:bpf_trace_run3+0x143/0x3f0 kernel/trace/bpf_trace.c:2126 Code: f7 ff 48 8d 7b 30 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 9f 02 00 00 48 8d 73 38 48 8d 7c 24 28 53 30 e8 45 1b f7 ff e8 10 94 7e 07 31 ff 89 c3 89 c6 e8 b5 22 RSP: 0018:ffffc900017bf6a8 EFLAGS: 00010086 RAX: 0000000000000000 RBX: ffffc90000cd2000 RCX: ffffffff817bb31e RDX: 0000000000000000 RSI: ffffc90000cd2038 RDI: ffffc900017bf6d0 RBP: 1ffff920002f7ed6 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff817bb28c R11: 0000000000000000 R12: 0000000000000001 R13: ffff888024299bc0 R14: 0000000000000001 R15: ffff888027563780 FS: 00007f32fac31700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90000cd2030 CR3: 0000000070a28000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __bpf_trace_sched_switch+0xdc/0x120 include/trace/events/sched.h:222 __traceiter_sched_switch+0x64/0xb0 include/trace/events/sched.h:222 trace_sched_switch include/trace/events/sched.h:222 [inline] __schedule+0x11a6/0x21a0 kernel/sched/core.c:5061 preempt_schedule_notrace+0x5b/0xd0 kernel/sched/core.c:5297 preempt_schedule_notrace_thunk+0x16/0x31 arch/x86/entry/thunk_64.S:41 rcu_read_unlock_sched_notrace include/linux/rcupdate.h:786 [inline] trace_kfree include/trace/events/kmem.h:138 [inline] kfree+0x206/0x3b0 mm/slub.c:4108 kobject_uevent_env+0x2ad/0x1680 lib/kobject_uevent.c:624 rx_queue_add_kobject net/core/net-sysfs.c:980 [inline] net_rx_queue_update_kobjects+0xee/0x450 net/core/net-sysfs.c:1020 register_queue_kobjects net/core/net-sysfs.c:1695 [inline] netdev_register_kobject+0x275/0x430 net/core/net-sysfs.c:1943 register_netdevice+0xd65/0x1500 net/core/dev.c:9977 register_netdev+0x2d/0x50 net/core/dev.c:10101 ip6_tnl_init_net+0x54d/0x8b0 net/ipv6/ip6_tunnel.c:2277 ops_init+0xaf/0x470 net/core/net_namespace.c:152 setup_net+0x2de/0x850 net/core/net_namespace.c:342 copy_net_ns+0x31e/0x760 net/core/net_namespace.c:483 create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0xbd/0x1f0 kernel/nsproxy.c:226 ksys_unshare+0x445/0x8e0 kernel/fork.c:2957 __do_sys_unshare kernel/fork.c:3025 [inline] __se_sys_unshare kernel/fork.c:3023 [inline] __x64_sys_unshare+0x2d/0x40 kernel/fork.c:3023 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45e219 Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f32fac30c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 000000000045e219 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000 RBP: 000000000119bfb0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c R13: 00007ffc1017e87f R14: 00007f32fac319c0 R15: 000000000119bf8c Modules linked in: CR2: ffffc90000cd2030 ---[ end trace fc176ca82ab041ca ]--- RIP: 0010:bpf_dispatcher_nop_func include/linux/bpf.h:651 [inline] RIP: 0010:__bpf_trace_run kernel/trace/bpf_trace.c:2088 [inline] RIP: 0010:bpf_trace_run3+0x143/0x3f0 kernel/trace/bpf_trace.c:2126 Code: f7 ff 48 8d 7b 30 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 9f 02 00 00 48 8d 73 38 48 8d 7c 24 28 53 30 e8 45 1b f7 ff e8 10 94 7e 07 31 ff 89 c3 89 c6 e8 b5 22 RSP: 0018:ffffc900017bf6a8 EFLAGS: 00010086 RAX: 0000000000000000 RBX: ffffc90000cd2000 RCX: ffffffff817bb31e RDX: 0000000000000000 RSI: ffffc90000cd2038 RDI: ffffc900017bf6d0 RBP: 1ffff920002f7ed6 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff817bb28c R11: 0000000000000000 R12: 0000000000000001 R13: ffff888024299bc0 R14: 0000000000000001 R15: ffff888027563780 FS: 00007f32fac31700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90000cd2030 CR3: 0000000070a28000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400