[ 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... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.77' (ECDSA) to the list of known hosts. 2022/07/17 06:35:35 parsed 1 programs 2022/07/17 06:35:35 executed programs: 0 syzkaller login: [ 40.597863] IPVS: ftp: loaded support on port[0] = 21 [ 40.702595] chnl_net:caif_netlink_parms(): no params data found [ 40.823959] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.830829] bridge0: port 1(bridge_slave_0) entered disabled state [ 40.838391] device bridge_slave_0 entered promiscuous mode [ 40.846580] bridge0: port 2(bridge_slave_1) entered blocking state [ 40.852968] bridge0: port 2(bridge_slave_1) entered disabled state [ 40.860245] device bridge_slave_1 entered promiscuous mode [ 40.878478] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 40.887358] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 40.904805] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 40.912325] team0: Port device team_slave_0 added [ 40.918047] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 40.925395] team0: Port device team_slave_1 added [ 40.939865] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 40.946188] 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. [ 40.971563] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 40.983018] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 40.989381] 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. [ 41.014807] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 41.025858] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 41.033839] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 41.053594] device hsr_slave_0 entered promiscuous mode [ 41.059362] device hsr_slave_1 entered promiscuous mode [ 41.065483] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 41.072522] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 41.136388] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.142812] bridge0: port 2(bridge_slave_1) entered forwarding state [ 41.149757] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.156163] bridge0: port 1(bridge_slave_0) entered forwarding state [ 41.185804] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 41.191889] 8021q: adding VLAN 0 to HW filter on device bond0 [ 41.200897] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 41.209772] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 41.218302] bridge0: port 1(bridge_slave_0) entered disabled state [ 41.226673] bridge0: port 2(bridge_slave_1) entered disabled state [ 41.233571] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 41.245930] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 41.252002] 8021q: adding VLAN 0 to HW filter on device team0 [ 41.261152] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 41.268862] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.275263] bridge0: port 1(bridge_slave_0) entered forwarding state [ 41.284203] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 41.292986] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.299382] bridge0: port 2(bridge_slave_1) entered forwarding state [ 41.316988] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 41.324761] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 41.333231] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 41.343302] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 41.354952] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 41.361103] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 41.368451] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 41.376315] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 41.388518] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 41.397687] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 41.404328] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 41.414624] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 41.429192] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 41.438782] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 41.471036] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 41.478795] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 41.486818] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 41.496398] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 41.503992] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 41.512365] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 41.521029] device veth0_vlan entered promiscuous mode [ 41.530410] device veth1_vlan entered promiscuous mode [ 41.537552] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 41.543915] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 41.553888] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 41.564858] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 41.574242] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 41.582242] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 41.591223] device veth0_macvtap entered promiscuous mode [ 41.597817] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 41.607090] device veth1_macvtap entered promiscuous mode [ 41.615961] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 41.624705] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 41.636015] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 41.642667] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 41.651530] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 41.661973] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 41.669166] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 41.781225] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 41.788145] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 41.805419] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 41.808663] IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready [ 41.819381] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 41.829152] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 41.837765] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 41.845096] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 41.892330] BUG: sleeping function called from invalid context at mm/page_alloc.c:4344 [ 41.901583] in_atomic(): 1, irqs_disabled(): 1, pid: 8382, name: syz-executor.0 [ 41.909015] 2 locks held by syz-executor.0/8382: [ 41.913748] #0: 00000000cb8bcfb5 (&dev->dev_mutex){+.+.}, at: v4l2_m2m_fop_poll+0x91/0x110 [ 41.922232] #1: 00000000b6ddc267 (&(&q->done_lock)->rlock){....}, at: v4l2_m2m_poll+0x199/0x720 [ 41.931145] irq event stamp: 18662 [ 41.934670] hardirqs last enabled at (18661): [] _raw_spin_unlock_irqrestore+0x79/0xe0 [ 41.944363] hardirqs last disabled at (18662): [] _raw_spin_lock_irqsave+0x66/0xc0 [ 41.953620] softirqs last enabled at (11228): [] __do_softirq+0x678/0x980 [ 41.962356] softirqs last disabled at (11023): [] irq_exit+0x215/0x260 [ 41.970567] Preemption disabled at: [ 41.970573] [<0000000000000000>] (null) [ 41.979010] CPU: 1 PID: 8382 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0 [ 41.986782] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 [ 41.996124] Call Trace: [ 41.998718] dump_stack+0x1fc/0x2ef [ 42.002330] ___might_sleep.cold+0x235/0x250 [ 42.006732] __alloc_pages_nodemask+0x593/0x2890 [ 42.011480] ? mark_held_locks+0xf0/0xf0 [ 42.015540] ? __lock_acquire+0x6de/0x3ff0 [ 42.019786] ? gfp_pfmemalloc_allowed+0x150/0x150 [ 42.024621] ? mark_held_locks+0xf0/0xf0 [ 42.028691] ? __pollwait+0x255/0x430 [ 42.032512] ? v4l2_m2m_poll+0x18a/0x720 [ 42.036569] alloc_pages_current+0x193/0x2a0 [ 42.040965] __get_free_pages+0x8/0x40 [ 42.044838] __pollwait+0x279/0x430 [ 42.048452] v4l2_m2m_poll+0x583/0x720 [ 42.052321] ? poll_initwait+0x170/0x170 [ 42.056373] ? v4l2_m2m_ctx_release+0x30/0x30 [ 42.060859] v4l2_m2m_fop_poll+0xa4/0x110 [ 42.064998] v4l2_poll+0x146/0x1f0 [ 42.068527] ? v4l2_mmap+0x1f0/0x1f0 [ 42.072222] do_sys_poll+0x501/0xd30 [ 42.075937] ? compat_core_sys_select+0x710/0x710 [ 42.080841] ? setup_fault_attr+0x200/0x200 [ 42.085179] ? __mutex_unlock_slowpath+0xea/0x610 [ 42.090049] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 42.094730] ? futex_lock_pi_atomic+0x3c0/0x3c0 [ 42.099404] ? lock_downgrade+0x720/0x720 [ 42.103547] ? lock_acquire+0x170/0x3c0 [ 42.107503] ? hash_futex+0x12/0x200 [ 42.111198] ? drop_futex_key_refs+0x6f/0xe0 [ 42.115599] ? futex_wake+0x159/0x480 [ 42.119392] ? poll_initwait+0x170/0x170 [ 42.123440] ? poll_schedule_timeout.constprop.0+0x1e0/0x1e0 [ 42.129223] ? poll_schedule_timeout.constprop.0+0x1e0/0x1e0 [ 42.135016] ? poll_schedule_timeout.constprop.0+0x1e0/0x1e0 [ 42.140805] ? poll_schedule_timeout.constprop.0+0x1e0/0x1e0 [ 42.146592] ? poll_schedule_timeout.constprop.0+0x1e0/0x1e0 [ 42.152375] ? poll_schedule_timeout.constprop.0+0x1e0/0x1e0 [ 42.158454] ? poll_schedule_timeout.constprop.0+0x1e0/0x1e0 [ 42.164237] ? poll_schedule_timeout.constprop.0+0x1e0/0x1e0 [ 42.170020] ? poll_schedule_timeout.constprop.0+0x1e0/0x1e0 [ 42.175810] ? nsec_to_clock_t+0x30/0x30 [ 42.179868] ? ktime_get_ts64+0x2c3/0x3e0 [ 42.184006] __se_sys_poll+0x12e/0x3f0 [ 42.187873] ? poll_select_set_timeout+0x130/0x130 [ 42.192786] ? trace_hardirqs_off_caller+0x6e/0x210 [ 42.197786] ? do_syscall_64+0x21/0x620 [ 42.201746] do_syscall_64+0xf9/0x620 [ 42.205552] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 42.210731] RIP: 0033:0x7fd99f74f199 [ 42.214425] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 42.233310] RSP: 002b:00007ffde8ec4f78 EFLAGS: 00000246 ORIG_RAX: 0000000000000007 [ 42.241003] RAX: ffffffffffffffda RBX: 00007fd99f861f60 RCX: 00007fd99f74f199 [ 42.248256] RDX: 000000000000009f RSI: 000000000000000a RDI: 00000000200003c0 [ 42.255515] RBP: 00007fd99f7a913b R08: 0000000000000000 R09: 0000000000000000 [ 42.262774] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 42.270023] R13: 00007fd99f866c28 R14: 00007fd99f861f60 R15: 0000000000000000