Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.33' (ECDSA) to the list of known hosts. 2021/07/07 08:30:38 fuzzer started 2021/07/07 08:30:38 connecting to host at 10.128.0.169:40227 2021/07/07 08:30:38 checking machine... 2021/07/07 08:30:38 checking revisions... syzkaller login: [ 71.823061][ T8439] [ 71.825537][ T8439] ====================================================== [ 71.832729][ T8439] WARNING: possible circular locking dependency detected [ 71.839741][ T8439] 5.13.0-syzkaller #0 Not tainted [ 71.845625][ T8439] ------------------------------------------------------ [ 71.852746][ T8439] syz-fuzzer/8439 is trying to acquire lock: [ 71.858921][ T8439] ffffffff8ba9c1c0 (fs_reclaim){+.+.}-{0:0}, at: fs_reclaim_acquire+0xf7/0x160 [ 71.868161][ T8439] [ 71.868161][ T8439] but task is already holding lock: [ 71.875765][ T8439] ffff8880b9d4d620 (lock#2){-.-.}-{2:2}, at: __alloc_pages_bulk+0x4ad/0x1870 [ 71.884642][ T8439] [ 71.884642][ T8439] which lock already depends on the new lock. [ 71.884642][ T8439] [ 71.895122][ T8439] [ 71.895122][ T8439] the existing dependency chain (in reverse order) is: [ 71.904294][ T8439] [ 71.904294][ T8439] -> #1 (lock#2){-.-.}-{2:2}: [ 71.911149][ T8439] free_unref_page+0x1bf/0x690 [ 71.916540][ T8439] __mmdrop+0xcb/0x3f0 [ 71.921120][ T8439] finish_task_switch.isra.0+0x6da/0xa50 [ 71.927392][ T8439] __schedule+0x93c/0x2710 [ 71.932357][ T8439] preempt_schedule_notrace+0x5b/0xd0 [ 71.938440][ T8439] preempt_schedule_notrace_thunk+0x16/0x18 [ 71.944961][ T8439] lock_acquire+0x461/0x510 [ 71.949975][ T8439] fs_reclaim_acquire+0xd2/0x160 [ 71.955606][ T8439] kmem_cache_alloc+0x3e/0x4a0 [ 71.961474][ T8439] getname_flags.part.0+0x50/0x4f0 [ 71.967278][ T8439] user_path_at_empty+0xa1/0x100 [ 71.973289][ T8439] do_faccessat+0x127/0x850 [ 71.978827][ T8439] do_syscall_64+0x35/0xb0 [ 71.984530][ T8439] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 71.991390][ T8439] [ 71.991390][ T8439] -> #0 (fs_reclaim){+.+.}-{0:0}: [ 71.998854][ T8439] __lock_acquire+0x2a07/0x54a0 [ 72.004315][ T8439] lock_acquire+0x1ab/0x510 [ 72.009497][ T8439] fs_reclaim_acquire+0x117/0x160 [ 72.015308][ T8439] prepare_alloc_pages+0x15c/0x580 [ 72.021102][ T8439] __alloc_pages+0x12f/0x500 [ 72.026200][ T8439] alloc_pages+0x18c/0x2a0 [ 72.031481][ T8439] stack_depot_save+0x39d/0x4e0 [ 72.037042][ T8439] save_stack+0x15e/0x1e0 [ 72.042079][ T8439] __set_page_owner+0x50/0x290 [ 72.047541][ T8439] __alloc_pages_bulk+0x8b9/0x1870 [ 72.053269][ T8439] __vmalloc_node_range+0x39d/0x960 [ 72.059505][ T8439] vmalloc_user+0x67/0x80 [ 72.064519][ T8439] kcov_mmap+0x2b/0x140 [ 72.070173][ T8439] mmap_region+0xcde/0x1760 [ 72.075184][ T8439] do_mmap+0x86e/0x11d0 [ 72.080097][ T8439] vm_mmap_pgoff+0x1b7/0x290 [ 72.085757][ T8439] ksys_mmap_pgoff+0x4a8/0x620 [ 72.091419][ T8439] do_syscall_64+0x35/0xb0 [ 72.096779][ T8439] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 72.103456][ T8439] [ 72.103456][ T8439] other info that might help us debug this: [ 72.103456][ T8439] [ 72.113871][ T8439] Possible unsafe locking scenario: [ 72.113871][ T8439] [ 72.121674][ T8439] CPU0 CPU1 [ 72.127401][ T8439] ---- ---- [ 72.133011][ T8439] lock(lock#2); [ 72.137142][ T8439] lock(fs_reclaim); [ 72.144058][ T8439] lock(lock#2); [ 72.150758][ T8439] lock(fs_reclaim); [ 72.154823][ T8439] [ 72.154823][ T8439] *** DEADLOCK *** [ 72.154823][ T8439] [ 72.166157][ T8439] 2 locks held by syz-fuzzer/8439: [ 72.175329][ T8439] #0: ffff888030c74028 (&mm->mmap_lock#2){++++}-{3:3}, at: vm_mmap_pgoff+0x15c/0x290 [ 72.189299][ T8439] #1: ffff8880b9d4d620 (lock#2){-.-.}-{2:2}, at: __alloc_pages_bulk+0x4ad/0x1870 [ 72.203483][ T8439] [ 72.203483][ T8439] stack backtrace: [ 72.211405][ T8439] CPU: 1 PID: 8439 Comm: syz-fuzzer Not tainted 5.13.0-syzkaller #0 [ 72.221381][ T8439] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.234332][ T8439] Call Trace: [ 72.238145][ T8439] dump_stack_lvl+0xcd/0x134 [ 72.243111][ T8439] check_noncircular+0x25f/0x2e0 [ 72.249577][ T8439] ? print_circular_bug+0x1e0/0x1e0 [ 72.255699][ T8439] ? mark_lock+0xef/0x17b0 [ 72.260471][ T8439] ? lockdep_lock+0xc6/0x200 [ 72.266199][ T8439] ? call_rcu_zapped+0xb0/0xb0 [ 72.271431][ T8439] __lock_acquire+0x2a07/0x54a0 [ 72.277492][ T8439] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 72.284653][ T8439] lock_acquire+0x1ab/0x510 [ 72.290025][ T8439] ? fs_reclaim_acquire+0xf7/0x160 [ 72.296644][ T8439] ? lock_release+0x720/0x720 [ 72.302107][ T8439] ? find_held_lock+0x2d/0x110 [ 72.308110][ T8439] fs_reclaim_acquire+0x117/0x160 [ 72.313862][ T8439] ? fs_reclaim_acquire+0xf7/0x160 [ 72.319164][ T8439] prepare_alloc_pages+0x15c/0x580 [ 72.324639][ T8439] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 72.331066][ T8439] __alloc_pages+0x12f/0x500 [ 72.335915][ T8439] ? __alloc_pages_slowpath.constprop.0+0x21b0/0x21b0 [ 72.343031][ T8439] ? __kernel_text_address+0x9/0x30 [ 72.350184][ T8439] alloc_pages+0x18c/0x2a0 [ 72.354803][ T8439] stack_depot_save+0x39d/0x4e0 [ 72.360834][ T8439] save_stack+0x15e/0x1e0 [ 72.366173][ T8439] ? register_early_stack+0xb0/0xb0 [ 72.373717][ T8439] ? __alloc_pages_bulk+0x8b9/0x1870 [ 72.380668][ T8439] ? __vmalloc_node_range+0x39d/0x960 [ 72.387972][ T8439] ? vmalloc_user+0x67/0x80 [ 72.395448][ T8439] ? kcov_mmap+0x2b/0x140 [ 72.400771][ T8439] ? mmap_region+0xcde/0x1760 [ 72.407109][ T8439] ? do_mmap+0x86e/0x11d0 [ 72.414740][ T8439] ? vm_mmap_pgoff+0x1b7/0x290 [ 72.420209][ T8439] ? ksys_mmap_pgoff+0x4a8/0x620 [ 72.426164][ T8439] ? do_syscall_64+0x35/0xb0 [ 72.432772][ T8439] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 72.441894][ T8439] ? lock_release+0x720/0x720 [ 72.448887][ T8439] ? preempt_count_add+0x74/0x140 [ 72.455135][ T8439] __set_page_owner+0x50/0x290 [ 72.460256][ T8439] ? post_alloc_hook+0x145/0x1e0 [ 72.467322][ T8439] __alloc_pages_bulk+0x8b9/0x1870 [ 72.473613][ T8439] ? __alloc_pages+0x500/0x500 [ 72.479608][ T8439] ? rcu_read_lock_sched_held+0x3a/0x70 [ 72.487974][ T8439] ? trace_kmalloc_node+0xbe/0xf0 [ 72.495679][ T8439] __vmalloc_node_range+0x39d/0x960 [ 72.502749][ T8439] ? vfree_atomic+0xe0/0xe0 [ 72.508689][ T8439] ? kcov_mmap+0x2b/0x140 [ 72.514818][ T8439] vmalloc_user+0x67/0x80 [ 72.520444][ T8439] ? kcov_mmap+0x2b/0x140 [ 72.526072][ T8439] kcov_mmap+0x2b/0x140 [ 72.531562][ T8439] ? memset+0x20/0x40 [ 72.536211][ T8439] mmap_region+0xcde/0x1760 [ 72.542786][ T8439] do_mmap+0x86e/0x11d0 [ 72.547893][ T8439] vm_mmap_pgoff+0x1b7/0x290 [ 72.554228][ T8439] ? randomize_stack_top+0x100/0x100 [ 72.559630][ T8439] ? __fget_files+0x288/0x3d0 [ 72.564933][ T8439] ksys_mmap_pgoff+0x4a8/0x620 [ 72.575278][ T8439] ? find_mergeable_anon_vma+0x240/0x240 [ 72.581611][ T8439] ? syscall_enter_from_user_mode+0x21/0x70 [ 72.588061][ T8439] do_syscall_64+0x35/0xb0 [ 72.593275][ T8439] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 72.600749][ T8439] RIP: 0033:0x4af20a [ 72.605026][ T8439] Code: e8 3b 82 fb ff 48 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 4c 8b 54 24 28 4c 8b 44 24 30 4c 8b 4c 24 38 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 40 ff ff ff ff 48 c7 44 24 48 [ 72.628494][ T8439] RSP: 002b:000000c0002ef5d8 EFLAGS: 00000212 ORIG_RAX: 0000000000000009 [ 72.637197][ T8439] RAX: ffffffffffffffda RBX: 000000c00001e800 RCX: 00000000004af20a [ 72.646394][ T8439] RDX: 0000000000000003 RSI: 0000000000080000 RDI: 0000000000000000 [ 72.655494][ T8439] RBP: 000000c0002ef638 R08: 0000000000000006 R09: 0000000000000000 [ 72.664252][ T8439] R10: 0000000000000001 R11: 0000000000000212 R12: 00000000007798c5 [ 72.672665][ T8439] R13: 00000000000000d4 R14: 00000000000000d3 R15: 0000000000000100 [ 72.681371][ T8439] BUG: sleeping function called from invalid context at mm/page_alloc.c:5179 [ 72.690477][ T8439] in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid: 8439, name: syz-fuzzer [ 72.700786][ T8439] INFO: lockdep is turned off. [ 72.708042][ T8439] irq event stamp: 30266 [ 72.712720][ T8439] hardirqs last enabled at (30265): [] _raw_spin_unlock_irqrestore+0x50/0x70 [ 72.723765][ T8439] hardirqs last disabled at (30266): [] __alloc_pages_bulk+0x1017/0x1870 [ 72.734858][ T8439] softirqs last enabled at (29546): [] __irq_exit_rcu+0x16e/0x1c0 [ 72.745049][ T8439] softirqs last disabled at (29535): [] __irq_exit_rcu+0x16e/0x1c0 [ 72.755192][ T8439] CPU: 1 PID: 8439 Comm: syz-fuzzer Not tainted 5.13.0-syzkaller #0 [ 72.764721][ T8439] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.775263][ T8439] Call Trace: [ 72.778815][ T8439] dump_stack_lvl+0xcd/0x134 [ 72.783526][ T8439] ___might_sleep.cold+0x1f1/0x237 [ 72.789777][ T8439] prepare_alloc_pages+0x3da/0x580 [ 72.796835][ T8439] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 72.803706][ T8439] __alloc_pages+0x12f/0x500 [ 72.809390][ T8439] ? __alloc_pages_slowpath.constprop.0+0x21b0/0x21b0 [ 72.817503][ T8439] ? __kernel_text_address+0x9/0x30 [ 72.823876][ T8439] alloc_pages+0x18c/0x2a0 [ 72.828489][ T8439] stack_depot_save+0x39d/0x4e0 [ 72.833342][ T8439] save_stack+0x15e/0x1e0 [ 72.837852][ T8439] ? register_early_stack+0xb0/0xb0 [ 72.843259][ T8439] ? __alloc_pages_bulk+0x8b9/0x1870 [ 72.848657][ T8439] ? __vmalloc_node_range+0x39d/0x960 [ 72.854316][ T8439] ? vmalloc_user+0x67/0x80 [ 72.859001][ T8439] ? kcov_mmap+0x2b/0x140 [ 72.863715][ T8439] ? mmap_region+0xcde/0x1760 [ 72.868414][ T8439] ? do_mmap+0x86e/0x11d0 [ 72.872878][ T8439] ? vm_mmap_pgoff+0x1b7/0x290 [ 72.877722][ T8439] ? ksys_mmap_pgoff+0x4a8/0x620 [ 72.882740][ T8439] ? do_syscall_64+0x35/0xb0 [ 72.888406][ T8439] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 72.895088][ T8439] ? lock_release+0x720/0x720 [ 72.900376][ T8439] ? preempt_count_add+0x74/0x140 [ 72.905482][ T8439] __set_page_owner+0x50/0x290 [ 72.910516][ T8439] ? post_alloc_hook+0x145/0x1e0 [ 72.915465][ T8439] __alloc_pages_bulk+0x8b9/0x1870 [ 72.921350][ T8439] ? __alloc_pages+0x500/0x500 [ 72.926835][ T8439] ? rcu_read_lock_sched_held+0x3a/0x70 [ 72.932759][ T8439] ? trace_kmalloc_node+0xbe/0xf0 [ 72.937893][ T8439] __vmalloc_node_range+0x39d/0x960 [ 72.943190][ T8439] ? vfree_atomic+0xe0/0xe0 [ 72.948767][ T8439] ? kcov_mmap+0x2b/0x140 [ 72.953917][ T8439] vmalloc_user+0x67/0x80 [ 72.959039][ T8439] ? kcov_mmap+0x2b/0x140 [ 72.963909][ T8439] kcov_mmap+0x2b/0x140 [ 72.968375][ T8439] ? memset+0x20/0x40 [ 72.972626][ T8439] mmap_region+0xcde/0x1760 [ 72.977261][ T8439] do_mmap+0x86e/0x11d0 [ 72.981794][ T8439] vm_mmap_pgoff+0x1b7/0x290 [ 72.986894][ T8439] ? randomize_stack_top+0x100/0x100 [ 72.994241][ T8439] ? __fget_files+0x288/0x3d0 [ 72.999465][ T8439] ksys_mmap_pgoff+0x4a8/0x620 [ 73.004424][ T8439] ? find_mergeable_anon_vma+0x240/0x240 [ 73.010316][ T8439] ? syscall_enter_from_user_mode+0x21/0x70 [ 73.017025][ T8439] do_syscall_64+0x35/0xb0 [ 73.022623][ T8439] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 73.028890][ T8439] RIP: 0033:0x4af20a [ 73.033226][ T8439] Code: e8 3b 82 fb ff 48 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 4c 8b 54 24 28 4c 8b 44 24 30 4c 8b 4c 24 38 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 40 ff ff ff ff 48 c7 44 24 48 [ 73.053985][ T8439] RSP: 002b:000000c0002ef5d8 EFLAGS: 00000212 ORIG_RAX: 0000000000000009 [ 73.063248][ T8439] RAX: ffffffffffffffda RBX: 000000c00001e800 RCX: 00000000004af20a [ 73.071965][ T8439] RDX: 0000000000000003 RSI: 0000000000080000 RDI: 0000000000000000 2021/07/07 08:30:39 testing simple program... [ 73.081089][ T8439] RBP: 000000c0002ef638 R08: 0000000000000006 R09: 0000000000000000 [ 73.089699][ T8439] R10: 0000000000000001 R11: 0000000000000212 R12: 00000000007798c5 [ 73.098647][ T8439] R13: 00000000000000d4 R14: 00000000000000d3 R15: 0000000000000100 executing program [ 74.722125][ T8448] chnl_net:caif_netlink_parms(): no params data found [ 74.757541][ T8448] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.766812][ T8448] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.776438][ T8448] device bridge_slave_0 entered promiscuous mode [ 74.784225][ T8448] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.792754][ T8448] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.801232][ T8448] device bridge_slave_1 entered promiscuous mode [ 74.817831][ T8448] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 74.828851][ T8448] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 74.846516][ T8448] team0: Port device team_slave_0 added [ 74.854117][ T8448] team0: Port device team_slave_1 added [ 74.867781][ T8448] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 74.874852][ T8448] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 74.901846][ T8448] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 74.914011][ T8448] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 74.926902][ T8448] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 74.953478][ T8448] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 74.975082][ T8448] device hsr_slave_0 entered promiscuous mode [ 74.981703][ T8448] device hsr_slave_1 entered promiscuous mode [ 75.046146][ T8448] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 75.055597][ T8448] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 75.063931][ T8448] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 75.072868][ T8448] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 75.090572][ T8448] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.098449][ T8448] bridge0: port 2(bridge_slave_1) entered forwarding state [ 75.106931][ T8448] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.114059][ T8448] bridge0: port 1(bridge_slave_0) entered forwarding state [ 75.143206][ T8448] 8021q: adding VLAN 0 to HW filter on device bond0 [ 75.155624][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 75.165581][ T5] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.173799][ T5] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.182477][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 75.193002][ T8448] 8021q: adding VLAN 0 to HW filter on device team0 [ 75.203391][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 75.212826][ T5] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.220348][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state [ 75.235139][ T8667] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 75.243676][ T8667] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.252057][ T8667] bridge0: port 2(bridge_slave_1) entered forwarding state [ 75.263483][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 75.272830][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 75.289957][ T8448] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 75.302273][ T8448] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 75.315487][ T8667] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 75.324930][ T8667] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 75.333801][ T8667] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 75.342914][ T8667] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 75.362138][ T8448] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 75.370923][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 75.379019][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 75.404040][ T8448] device veth0_vlan entered promiscuous mode [ 75.411980][ T8667] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 75.422175][ T8667] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 75.431172][ T8667] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 75.439885][ T8667] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 75.451639][ T8448] device veth1_vlan entered promiscuous mode [ 75.469555][ T8448] device veth0_macvtap entered promiscuous mode [ 75.478754][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 75.487599][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 75.496863][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 75.506206][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 75.517274][ T8448] device veth1_macvtap entered promiscuous mode [ 75.533104][ T8448] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 75.542102][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 75.555594][ T8448] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 75.564701][ T36] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 75.577422][ T8448] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.588596][ T8448] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.600805][ T8448] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.610437][ T8448] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 75.663153][ T131] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.675452][ T131] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.683298][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 75.709872][ T131] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 75.719785][ T131] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 75.729123][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/07/07 08:30:42 building call list... [ 76.047845][ T25] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 executing program [ 77.674929][ T8438] can: request_module (can-proto-0) failed. [ 77.687137][ T8438] can: request_module (can-proto-0) failed. [ 77.699132][ T8438] can: request_module (can-proto-0) failed.