[ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.146' (ECDSA) to the list of known hosts. 2021/07/12 09:52:45 parsed 1 programs syzkaller login: [ 71.085641][ T8460] [ 71.088136][ T8460] ====================================================== [ 71.095451][ T8460] WARNING: possible circular locking dependency detected [ 71.102540][ T8460] 5.14.0-rc1-syzkaller #0 Not tainted [ 71.107895][ T8460] ------------------------------------------------------ [ 71.115166][ T8460] syz-execprog/8460 is trying to acquire lock: [ 71.121442][ T8460] ffffffff8ba9c460 (fs_reclaim){+.+.}-{0:0}, at: fs_reclaim_acquire+0xf7/0x160 [ 71.130676][ T8460] [ 71.130676][ T8460] but task is already holding lock: [ 71.138036][ T8460] ffff8880b9d4d660 (lock#2){-.-.}-{2:2}, at: __alloc_pages_bulk+0x4ad/0x1870 [ 71.146982][ T8460] [ 71.146982][ T8460] which lock already depends on the new lock. [ 71.146982][ T8460] [ 71.157473][ T8460] [ 71.157473][ T8460] the existing dependency chain (in reverse order) is: [ 71.166476][ T8460] [ 71.166476][ T8460] -> #1 (lock#2){-.-.}-{2:2}: [ 71.173354][ T8460] free_unref_page+0x1bf/0x690 [ 71.178637][ T8460] __mmdrop+0xcb/0x3f0 [ 71.183228][ T8460] finish_task_switch.isra.0+0x6da/0xa50 [ 71.189493][ T8460] __schedule+0x942/0x26f0 [ 71.194437][ T8460] preempt_schedule_irq+0x4e/0x90 [ 71.200058][ T8460] irqentry_exit+0x31/0x80 [ 71.205452][ T8460] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 71.212316][ T8460] lock_release+0x3f1/0x720 [ 71.217446][ T8460] kmem_cache_alloc+0x3e/0x3a0 [ 71.222765][ T8460] prepare_creds+0x3f/0x7b0 [ 71.227888][ T8460] do_faccessat+0x3f4/0x850 [ 71.232933][ T8460] do_syscall_64+0x35/0xb0 [ 71.237974][ T8460] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 71.244955][ T8460] [ 71.244955][ T8460] -> #0 (fs_reclaim){+.+.}-{0:0}: [ 71.252330][ T8460] __lock_acquire+0x2a07/0x54a0 [ 71.257696][ T8460] lock_acquire+0x1ab/0x510 [ 71.262703][ T8460] fs_reclaim_acquire+0x117/0x160 [ 71.268236][ T8460] prepare_alloc_pages+0x15c/0x580 [ 71.273853][ T8460] __alloc_pages+0x12f/0x500 [ 71.278961][ T8460] alloc_pages+0x18c/0x2a0 [ 71.283883][ T8460] stack_depot_save+0x39d/0x4e0 [ 71.289245][ T8460] save_stack+0x15e/0x1e0 [ 71.294236][ T8460] __set_page_owner+0x50/0x290 [ 71.299575][ T8460] __alloc_pages_bulk+0x8b9/0x1870 [ 71.305223][ T8460] __vmalloc_node_range+0x39d/0x960 [ 71.311019][ T8460] vmalloc_user+0x67/0x80 [ 71.316018][ T8460] kcov_mmap+0x2b/0x140 [ 71.320842][ T8460] mmap_region+0xcde/0x1760 [ 71.326043][ T8460] do_mmap+0x86e/0x1180 [ 71.330771][ T8460] vm_mmap_pgoff+0x1b7/0x290 [ 71.335890][ T8460] ksys_mmap_pgoff+0x4a8/0x620 [ 71.341200][ T8460] do_syscall_64+0x35/0xb0 [ 71.346194][ T8460] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 71.352758][ T8460] [ 71.352758][ T8460] other info that might help us debug this: [ 71.352758][ T8460] [ 71.363173][ T8460] Possible unsafe locking scenario: [ 71.363173][ T8460] [ 71.370607][ T8460] CPU0 CPU1 [ 71.376061][ T8460] ---- ---- [ 71.382619][ T8460] lock(lock#2); [ 71.386240][ T8460] lock(fs_reclaim); [ 71.392807][ T8460] lock(lock#2); [ 71.399289][ T8460] lock(fs_reclaim); [ 71.403718][ T8460] [ 71.403718][ T8460] *** DEADLOCK *** [ 71.403718][ T8460] [ 71.412356][ T8460] 2 locks held by syz-execprog/8460: [ 71.417629][ T8460] #0: ffff88802c71ab28 (&mm->mmap_lock#2){++++}-{3:3}, at: vm_mmap_pgoff+0x15c/0x290 [ 71.427487][ T8460] #1: ffff8880b9d4d660 (lock#2){-.-.}-{2:2}, at: __alloc_pages_bulk+0x4ad/0x1870 [ 71.437053][ T8460] [ 71.437053][ T8460] stack backtrace: [ 71.443049][ T8460] CPU: 1 PID: 8460 Comm: syz-execprog Not tainted 5.14.0-rc1-syzkaller #0 [ 71.451625][ T8460] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.462201][ T8460] Call Trace: [ 71.465698][ T8460] dump_stack_lvl+0xcd/0x134 [ 71.470406][ T8460] check_noncircular+0x25f/0x2e0 [ 71.475512][ T8460] ? print_circular_bug+0x1e0/0x1e0 [ 71.480937][ T8460] ? mark_lock+0xef/0x17b0 [ 71.485360][ T8460] ? lockdep_lock+0xc6/0x200 [ 71.490516][ T8460] ? call_rcu_zapped+0xb0/0xb0 [ 71.495281][ T8460] __lock_acquire+0x2a07/0x54a0 [ 71.500160][ T8460] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 71.506485][ T8460] lock_acquire+0x1ab/0x510 [ 71.511599][ T8460] ? fs_reclaim_acquire+0xf7/0x160 [ 71.516890][ T8460] ? lock_release+0x720/0x720 [ 71.521660][ T8460] ? find_held_lock+0x2d/0x110 [ 71.527124][ T8460] fs_reclaim_acquire+0x117/0x160 [ 71.532960][ T8460] ? fs_reclaim_acquire+0xf7/0x160 [ 71.538412][ T8460] prepare_alloc_pages+0x15c/0x580 [ 71.543517][ T8460] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 71.549577][ T8460] __alloc_pages+0x12f/0x500 [ 71.554160][ T8460] ? __alloc_pages_slowpath.constprop.0+0x21b0/0x21b0 [ 71.561010][ T8460] ? __kernel_text_address+0x9/0x30 [ 71.566202][ T8460] alloc_pages+0x18c/0x2a0 [ 71.570789][ T8460] stack_depot_save+0x39d/0x4e0 [ 71.575676][ T8460] save_stack+0x15e/0x1e0 [ 71.580146][ T8460] ? register_early_stack+0xb0/0xb0 [ 71.585497][ T8460] ? __alloc_pages_bulk+0x8b9/0x1870 [ 71.590775][ T8460] ? __vmalloc_node_range+0x39d/0x960 [ 71.596145][ T8460] ? vmalloc_user+0x67/0x80 [ 71.600748][ T8460] ? kcov_mmap+0x2b/0x140 [ 71.605240][ T8460] ? mmap_region+0xcde/0x1760 [ 71.610093][ T8460] ? do_mmap+0x86e/0x1180 [ 71.614508][ T8460] ? vm_mmap_pgoff+0x1b7/0x290 [ 71.619353][ T8460] ? ksys_mmap_pgoff+0x4a8/0x620 [ 71.624890][ T8460] ? do_syscall_64+0x35/0xb0 [ 71.629655][ T8460] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 71.635726][ T8460] ? lock_release+0x720/0x720 [ 71.640401][ T8460] ? preempt_count_add+0x74/0x140 [ 71.646276][ T8460] __set_page_owner+0x50/0x290 [ 71.651048][ T8460] ? post_alloc_hook+0x145/0x1e0 [ 71.656091][ T8460] __alloc_pages_bulk+0x8b9/0x1870 [ 71.661370][ T8460] ? __alloc_pages+0x500/0x500 [ 71.666117][ T8460] ? rcu_read_lock_sched_held+0x3a/0x70 [ 71.671652][ T8460] ? trace_kmalloc_node+0x32/0x100 [ 71.676751][ T8460] __vmalloc_node_range+0x39d/0x960 [ 71.682118][ T8460] ? vfree_atomic+0xe0/0xe0 [ 71.686607][ T8460] ? kcov_mmap+0x2b/0x140 [ 71.690947][ T8460] vmalloc_user+0x67/0x80 [ 71.695551][ T8460] ? kcov_mmap+0x2b/0x140 [ 71.700408][ T8460] kcov_mmap+0x2b/0x140 [ 71.704562][ T8460] ? memset+0x20/0x40 [ 71.708681][ T8460] mmap_region+0xcde/0x1760 [ 71.713274][ T8460] do_mmap+0x86e/0x1180 [ 71.717524][ T8460] vm_mmap_pgoff+0x1b7/0x290 [ 71.722307][ T8460] ? randomize_stack_top+0x100/0x100 [ 71.727589][ T8460] ? __fget_files+0x23d/0x3e0 [ 71.732350][ T8460] ksys_mmap_pgoff+0x4a8/0x620 [ 71.737475][ T8460] ? mlock_future_check+0x120/0x120 [ 71.742876][ T8460] ? syscall_enter_from_user_mode+0x21/0x70 [ 71.748888][ T8460] do_syscall_64+0x35/0xb0 [ 71.753323][ T8460] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 71.759384][ T8460] RIP: 0033:0x4b132a [ 71.763269][ T8460] Code: e8 db 57 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 [ 71.783372][ T8460] RSP: 002b:000000c0004efa10 EFLAGS: 00000202 ORIG_RAX: 0000000000000009 [ 71.791786][ T8460] RAX: ffffffffffffffda RBX: 000000c000020800 RCX: 00000000004b132a [ 71.800026][ T8460] RDX: 0000000000000003 RSI: 0000000000080000 RDI: 0000000000000000 [ 71.808274][ T8460] RBP: 000000c0004efa70 R08: 0000000000000006 R09: 0000000000000000 [ 71.816516][ T8460] R10: 0000000000000001 R11: 0000000000000202 R12: 0000000000727f1a [ 71.824485][ T8460] R13: 000000000000010a R14: 0000000000000200 R15: 0000000000000100 [ 71.832851][ T8460] BUG: sleeping function called from invalid context at mm/page_alloc.c:5167 [ 71.841652][ T8460] in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid: 8460, name: syz-execprog [ 71.851043][ T8460] INFO: lockdep is turned off. [ 71.855806][ T8460] irq event stamp: 21990 [ 71.860027][ T8460] hardirqs last enabled at (21989): [] _raw_spin_unlock_irqrestore+0x50/0x70 [ 71.870610][ T8460] hardirqs last disabled at (21990): [] __alloc_pages_bulk+0x1017/0x1870 [ 71.880582][ T8460] softirqs last enabled at (21198): [] __irq_exit_rcu+0x16e/0x1c0 [ 71.890216][ T8460] softirqs last disabled at (21129): [] __irq_exit_rcu+0x16e/0x1c0 [ 71.899810][ T8460] CPU: 1 PID: 8460 Comm: syz-execprog Not tainted 5.14.0-rc1-syzkaller #0 [ 71.908551][ T8460] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 71.918821][ T8460] Call Trace: [ 71.922182][ T8460] dump_stack_lvl+0xcd/0x134 [ 71.927048][ T8460] ___might_sleep.cold+0x1f1/0x237 [ 71.932186][ T8460] prepare_alloc_pages+0x3da/0x580 [ 71.937387][ T8460] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 71.943452][ T8460] __alloc_pages+0x12f/0x500 [ 71.948057][ T8460] ? __alloc_pages_slowpath.constprop.0+0x21b0/0x21b0 [ 71.954899][ T8460] ? __kernel_text_address+0x9/0x30 [ 71.960087][ T8460] alloc_pages+0x18c/0x2a0 [ 71.964491][ T8460] stack_depot_save+0x39d/0x4e0 [ 71.969328][ T8460] save_stack+0x15e/0x1e0 [ 71.973646][ T8460] ? register_early_stack+0xb0/0xb0 [ 71.978825][ T8460] ? __alloc_pages_bulk+0x8b9/0x1870 [ 71.984094][ T8460] ? __vmalloc_node_range+0x39d/0x960 [ 71.989448][ T8460] ? vmalloc_user+0x67/0x80 [ 71.993935][ T8460] ? kcov_mmap+0x2b/0x140 [ 71.998269][ T8460] ? mmap_region+0xcde/0x1760 [ 72.002934][ T8460] ? do_mmap+0x86e/0x1180 [ 72.007246][ T8460] ? vm_mmap_pgoff+0x1b7/0x290 [ 72.011993][ T8460] ? ksys_mmap_pgoff+0x4a8/0x620 [ 72.016913][ T8460] ? do_syscall_64+0x35/0xb0 [ 72.021508][ T8460] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 72.027648][ T8460] ? lock_release+0x720/0x720 [ 72.032520][ T8460] ? preempt_count_add+0x74/0x140 [ 72.037553][ T8460] __set_page_owner+0x50/0x290 [ 72.042316][ T8460] ? post_alloc_hook+0x145/0x1e0 [ 72.047256][ T8460] __alloc_pages_bulk+0x8b9/0x1870 [ 72.052364][ T8460] ? __alloc_pages+0x500/0x500 [ 72.057134][ T8460] ? rcu_read_lock_sched_held+0x3a/0x70 [ 72.062870][ T8460] ? trace_kmalloc_node+0x32/0x100 [ 72.067998][ T8460] __vmalloc_node_range+0x39d/0x960 [ 72.073205][ T8460] ? vfree_atomic+0xe0/0xe0 [ 72.077720][ T8460] ? kcov_mmap+0x2b/0x140 [ 72.082037][ T8460] vmalloc_user+0x67/0x80 [ 72.086525][ T8460] ? kcov_mmap+0x2b/0x140 [ 72.091793][ T8460] kcov_mmap+0x2b/0x140 [ 72.095939][ T8460] ? memset+0x20/0x40 [ 72.099931][ T8460] mmap_region+0xcde/0x1760 [ 72.104426][ T8460] do_mmap+0x86e/0x1180 [ 72.108656][ T8460] vm_mmap_pgoff+0x1b7/0x290 [ 72.113264][ T8460] ? randomize_stack_top+0x100/0x100 [ 72.118620][ T8460] ? __fget_files+0x23d/0x3e0 [ 72.123501][ T8460] ksys_mmap_pgoff+0x4a8/0x620 [ 72.128537][ T8460] ? mlock_future_check+0x120/0x120 [ 72.133740][ T8460] ? syscall_enter_from_user_mode+0x21/0x70 [ 72.139719][ T8460] do_syscall_64+0x35/0xb0 [ 72.144151][ T8460] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 72.150036][ T8460] RIP: 0033:0x4b132a [ 72.154413][ T8460] Code: e8 db 57 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 [ 72.175389][ T8460] RSP: 002b:000000c0004efa10 EFLAGS: 00000202 ORIG_RAX: 0000000000000009 [ 72.184915][ T8460] RAX: ffffffffffffffda RBX: 000000c000020800 RCX: 00000000004b132a [ 72.192891][ T8460] RDX: 0000000000000003 RSI: 0000000000080000 RDI: 0000000000000000 [ 72.201204][ T8460] RBP: 000000c0004efa70 R08: 0000000000000006 R09: 0000000000000000 [ 72.209319][ T8460] R10: 0000000000000001 R11: 0000000000000202 R12: 0000000000727f1a [ 72.217877][ T8460] R13: 000000000000010a R14: 0000000000000200 R15: 0000000000000100 2021/07/12 09:52:47 executed programs: 0 [ 73.695616][ T8487] chnl_net:caif_netlink_parms(): no params data found [ 73.735475][ T8487] bridge0: port 1(bridge_slave_0) entered blocking state [ 73.744299][ T8487] bridge0: port 1(bridge_slave_0) entered disabled state [ 73.752979][ T8487] device bridge_slave_0 entered promiscuous mode [ 73.760989][ T8487] bridge0: port 2(bridge_slave_1) entered blocking state [ 73.768822][ T8487] bridge0: port 2(bridge_slave_1) entered disabled state [ 73.776831][ T8487] device bridge_slave_1 entered promiscuous mode [ 73.792153][ T8487] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 73.803028][ T8487] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 73.820788][ T8487] team0: Port device team_slave_0 added [ 73.827556][ T8487] team0: Port device team_slave_1 added [ 73.841207][ T8487] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 73.848424][ T8487] 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. [ 73.875548][ T8487] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 73.888660][ T8487] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 73.895680][ T8487] 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. [ 73.922864][ T8487] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 73.945261][ T8487] device hsr_slave_0 entered promiscuous mode [ 73.951925][ T8487] device hsr_slave_1 entered promiscuous mode [ 74.022648][ T8487] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 74.031609][ T8487] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 74.048416][ T8487] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 74.059780][ T8487] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 74.078789][ T8487] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.085839][ T8487] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.093180][ T8487] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.100295][ T8487] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.129694][ T8487] 8021q: adding VLAN 0 to HW filter on device bond0 [ 74.141321][ T4855] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 74.150431][ T4855] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.158518][ T4855] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.167178][ T4855] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 74.177688][ T8487] 8021q: adding VLAN 0 to HW filter on device team0 [ 74.187905][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 74.196300][ T7] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.203428][ T7] bridge0: port 1(bridge_slave_0) entered forwarding state [ 74.214152][ T3979] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 74.222827][ T3979] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.230084][ T3979] bridge0: port 2(bridge_slave_1) entered forwarding state [ 74.244353][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 74.253032][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 74.266527][ T3979] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 74.275482][ T3979] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 74.287611][ T8487] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 74.298708][ T8487] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 74.307873][ T3981] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 74.326596][ T8487] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 74.334087][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 74.342535][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 74.366543][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 74.375552][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 74.384595][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 74.392928][ T26] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 74.402525][ T8487] device veth0_vlan entered promiscuous mode [ 74.413188][ T8487] device veth1_vlan entered promiscuous mode [ 74.436155][ T3981] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 74.444500][ T3981] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 74.453638][ T3981] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 74.468461][ T8487] device veth0_macvtap entered promiscuous mode [ 74.477951][ T8487] device veth1_macvtap entered promiscuous mode [ 74.492089][ T8487] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 74.499768][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 74.509267][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 74.520203][ T8487] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 74.528475][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 74.539679][ T8487] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.549687][ T8487] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.558798][ T8487] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.568296][ T8487] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 74.607399][ T155] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.619837][ T155] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.644593][ T4855] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 74.656046][ T155] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 74.663882][ T155] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 74.673191][ T3981] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 75.616644][ T3981] Bluetooth: hci0: command 0x0409 tx timeout 2021/07/12 09:52:52 executed programs: 50 [ 77.706079][ T8698] Bluetooth: hci0: command 0x041b tx timeout [ 79.776849][ T8698] Bluetooth: hci0: command 0x040f tx timeout