Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.97' (ECDSA) to the list of known hosts. 2022/07/17 06:54:55 parsed 1 programs 2022/07/17 06:54:55 executed programs: 0 syzkaller login: [ 28.570407] IPVS: ftp: loaded support on port[0] = 21 [ 28.669746] chnl_net:caif_netlink_parms(): no params data found [ 28.769516] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.776062] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.783654] device bridge_slave_0 entered promiscuous mode [ 28.791181] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.798238] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.805072] device bridge_slave_1 entered promiscuous mode [ 28.821084] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 28.829874] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 28.846510] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 28.853881] team0: Port device team_slave_0 added [ 28.859443] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 28.866549] team0: Port device team_slave_1 added [ 28.880867] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 28.887189] 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. [ 28.912410] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 28.923590] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 28.929882] 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. [ 28.955179] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 28.966152] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 28.973928] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 28.991672] device hsr_slave_0 entered promiscuous mode [ 28.997293] device hsr_slave_1 entered promiscuous mode [ 29.003082] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 29.010848] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 29.070398] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.076793] bridge0: port 2(bridge_slave_1) entered forwarding state [ 29.083484] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.089867] bridge0: port 1(bridge_slave_0) entered forwarding state [ 29.116123] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 29.122337] 8021q: adding VLAN 0 to HW filter on device bond0 [ 29.131252] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 29.140478] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 29.158925] bridge0: port 1(bridge_slave_0) entered disabled state [ 29.165813] bridge0: port 2(bridge_slave_1) entered disabled state [ 29.175305] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 29.181992] 8021q: adding VLAN 0 to HW filter on device team0 [ 29.190610] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 29.198355] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.204685] bridge0: port 1(bridge_slave_0) entered forwarding state [ 29.223293] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 29.233480] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 29.244915] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 29.251807] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 29.259609] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.265959] bridge0: port 2(bridge_slave_1) entered forwarding state [ 29.273520] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 29.281276] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 29.288829] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 29.296288] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 29.303921] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 29.310735] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 29.321874] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 29.330007] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 29.337341] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 29.348400] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 29.400051] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 29.409205] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 29.439579] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 29.447967] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 29.454394] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 29.463358] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 29.471277] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 29.478535] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 29.487593] device veth0_vlan entered promiscuous mode [ 29.495524] device veth1_vlan entered promiscuous mode [ 29.501884] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 29.510263] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 29.520575] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 29.529947] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 29.537636] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 29.544806] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 29.554513] device veth0_macvtap entered promiscuous mode [ 29.560657] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 29.568810] device veth1_macvtap entered promiscuous mode [ 29.577520] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 29.586485] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 29.596884] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 29.603552] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 29.611894] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 29.621081] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 29.628585] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 29.667692] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 29.753873] BUG: sleeping function called from invalid context at mm/page_alloc.c:4129 [ 29.762132] in_atomic(): 1, irqs_disabled(): 1, pid: 8236, name: syz-executor.0 [ 29.769566] 2 locks held by syz-executor.0/8236: [ 29.774299] #0: (&dev->dev_mutex){+.+.}, at: [] v4l2_m2m_fop_poll+0x91/0x110 [ 29.783218] #1: (&(&q->done_lock)->rlock){....}, at: [] v4l2_m2m_poll+0x16f/0x670 [ 29.792573] irq event stamp: 17684 [ 29.796110] hardirqs last enabled at (17683): [] _raw_spin_unlock_irqrestore+0x79/0xe0 [ 29.805796] hardirqs last disabled at (17684): [] _raw_spin_lock_irqsave+0x66/0xc0 [ 29.815047] softirqs last enabled at (7742): [] __do_softirq+0x68b/0x9ff [ 29.823521] softirqs last disabled at (7575): [] irq_exit+0x193/0x240 [ 29.831727] Preemption disabled at: [ 29.831732] [< (null)>] (null) [ 29.840152] CPU: 0 PID: 8236 Comm: syz-executor.0 Not tainted 4.14.288-syzkaller #0 [ 29.847928] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 [ 29.857263] Call Trace: [ 29.859873] dump_stack+0x1b2/0x281 [ 29.863491] ___might_sleep.cold+0x235/0x250 [ 29.867897] __alloc_pages_nodemask+0x56a/0x2720 [ 29.872640] ? gfp_pfmemalloc_allowed+0x150/0x150 [ 29.877509] ? trace_hardirqs_on+0x10/0x10 [ 29.881727] ? lock_acquire+0x170/0x3f0 [ 29.885713] ? __pollwait+0x20f/0x3f0 [ 29.889494] ? v4l2_m2m_poll+0x160/0x670 [ 29.893532] alloc_pages_current+0x155/0x260 [ 29.897916] ? v4l2_m2m_poll+0x16f/0x670 [ 29.901952] __get_free_pages+0xb/0x40 [ 29.905815] __pollwait+0x233/0x3f0 [ 29.909429] v4l2_m2m_poll+0x4d2/0x670 [ 29.913299] ? poll_initwait+0x170/0x170 [ 29.917336] ? v4l2_m2m_ctx_release+0x30/0x30 [ 29.921811] v4l2_m2m_fop_poll+0xa4/0x110 [ 29.925935] v4l2_poll+0x133/0x1d0 [ 29.929459] do_sys_poll+0x522/0xc50 [ 29.933157] ? v4l2_mmap+0x1d0/0x1d0 [ 29.936851] ? compat_core_sys_select+0x5c0/0x5c0 [ 29.941670] ? vim2m_release+0x120/0x120 [ 29.945708] ? should_fail+0x327/0x3f0 [ 29.949578] ? get_futex_key_refs+0x64/0x90 [ 29.953873] ? get_futex_key+0x574/0x11b0 [ 29.957998] ? futex_lock_pi_atomic+0x2e0/0x2e0 [ 29.962645] ? __might_fault+0x104/0x1b0 [ 29.966697] ? hash_futex+0x12/0x200 [ 29.970389] ? drop_futex_key_refs+0x2e/0xa0 [ 29.974780] ? poll_initwait+0x170/0x170 [ 29.978819] ? compat_get_fd_set+0x70/0x70 [ 29.983028] ? compat_get_fd_set+0x70/0x70 [ 29.987239] ? compat_get_fd_set+0x70/0x70 [ 29.991450] ? compat_get_fd_set+0x70/0x70 [ 29.995699] ? compat_get_fd_set+0x70/0x70 [ 29.999911] ? compat_get_fd_set+0x70/0x70 [ 30.004120] ? compat_get_fd_set+0x70/0x70 [ 30.008331] ? compat_get_fd_set+0x70/0x70 [ 30.012541] ? compat_get_fd_set+0x70/0x70 [ 30.016753] ? timespec_add_safe+0x1c0/0x1c0 [ 30.021142] ? kvm_clock_read+0x1f/0x30 [ 30.025092] ? ktime_get_ts64+0x261/0x3a0 [ 30.029216] SyS_poll+0xf4/0x390 [ 30.032559] ? SyS_pselect6+0x3c0/0x3c0 [ 30.036519] ? do_syscall_64+0x4c/0x640 [ 30.040483] ? SyS_pselect6+0x3c0/0x3c0 [ 30.044435] do_syscall_64+0x1d5/0x640 [ 30.048309] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 30.053486] RIP: 0033:0x7f4c649cc199 [ 30.057176] RSP: 002b:00007fff20265c58 EFLAGS: 00000246 ORIG_RAX: 0000000000000007 [ 30.064869] RAX: ffffffffffffffda RBX: 00007f4c64adef60 RCX: 00007f4c649cc199 [ 30.072114] RDX: 000000000000009f RSI: 000000000000000a RDI: 00000000200003c0 [ 30.079443] RBP: 00007f4c64a2613b R08: 0000000000000000 R09: 0000000000000000 [ 30.086690] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 30.093937] R13: 00007f4c64ae3c28 R14: 00007f4c64adef60 R15: 0000000000000000