[ 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. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.19' (ECDSA) to the list of known hosts. 2020/11/11 08:22:55 fuzzer started 2020/11/11 08:22:56 connecting to host at 10.128.0.26:33653 2020/11/11 08:22:56 checking machine... 2020/11/11 08:22:56 checking revisions... 2020/11/11 08:22:56 testing simple program... syzkaller login: [ 47.928598][ T8457] IPVS: ftp: loaded support on port[0] = 21 [ 48.057780][ T8457] chnl_net:caif_netlink_parms(): no params data found [ 48.107557][ T8457] bridge0: port 1(bridge_slave_0) entered blocking state [ 48.115805][ T8457] bridge0: port 1(bridge_slave_0) entered disabled state [ 48.124969][ T8457] device bridge_slave_0 entered promiscuous mode [ 48.134890][ T8457] bridge0: port 2(bridge_slave_1) entered blocking state [ 48.142408][ T8457] bridge0: port 2(bridge_slave_1) entered disabled state [ 48.150441][ T8457] device bridge_slave_1 entered promiscuous mode [ 48.169837][ T8457] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 48.181767][ T8457] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 48.204042][ T8457] team0: Port device team_slave_0 added [ 48.211258][ T8457] team0: Port device team_slave_1 added [ 48.229726][ T8457] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 48.237094][ T8457] 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. [ 48.263752][ T8457] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 48.276515][ T8457] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 48.284236][ T8457] 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. [ 48.310849][ T8457] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 48.336228][ T8457] device hsr_slave_0 entered promiscuous mode [ 48.343284][ T8457] device hsr_slave_1 entered promiscuous mode [ 48.434977][ T8457] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 48.445265][ T8457] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 48.455464][ T8457] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 48.465364][ T8457] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 48.489224][ T8457] bridge0: port 2(bridge_slave_1) entered blocking state [ 48.496429][ T8457] bridge0: port 2(bridge_slave_1) entered forwarding state [ 48.504509][ T8457] bridge0: port 1(bridge_slave_0) entered blocking state [ 48.511673][ T8457] bridge0: port 1(bridge_slave_0) entered forwarding state [ 48.555284][ T8457] 8021q: adding VLAN 0 to HW filter on device bond0 [ 48.567949][ T4894] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 48.581579][ T4894] bridge0: port 1(bridge_slave_0) entered disabled state [ 48.591358][ T4894] bridge0: port 2(bridge_slave_1) entered disabled state [ 48.599238][ T4894] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 48.614146][ T8457] 8021q: adding VLAN 0 to HW filter on device team0 [ 48.624561][ T3181] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 48.635005][ T3181] bridge0: port 1(bridge_slave_0) entered blocking state [ 48.642355][ T3181] bridge0: port 1(bridge_slave_0) entered forwarding state [ 48.654996][ T4894] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 48.664109][ T4894] bridge0: port 2(bridge_slave_1) entered blocking state [ 48.671242][ T4894] bridge0: port 2(bridge_slave_1) entered forwarding state [ 48.692521][ T2990] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 48.702318][ T2990] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 48.712027][ T2990] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 48.725189][ T3181] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 48.737555][ T8457] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 48.750820][ T8457] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 48.758815][ T3192] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 48.779246][ T8457] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 48.788753][ T3181] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 48.797325][ T3181] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 48.822489][ T3192] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 48.836109][ T3181] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 48.844691][ T3181] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 48.852954][ T3181] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 48.864540][ T8457] device veth0_vlan entered promiscuous mode [ 48.876041][ T8457] device veth1_vlan entered promiscuous mode [ 48.896733][ T2990] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 48.905921][ T2990] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 48.914878][ T2990] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 48.926333][ T8457] device veth0_macvtap entered promiscuous mode [ 48.936647][ T8457] device veth1_macvtap entered promiscuous mode [ 48.953584][ T8457] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 48.961868][ T3181] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 48.972397][ T3181] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 48.984600][ T8457] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 48.992689][ T3181] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 49.004029][ T8457] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 49.013028][ T8457] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 49.022149][ T8457] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 49.032228][ T8457] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 49.096894][ T79] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 49.138791][ T79] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 49.149737][ T21] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 49.157718][ T21] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 49.165603][ T2990] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 49.175347][ T2990] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 49.233396][ T21] BUG: sleeping function called from invalid context at net/mac80211/sta_info.c:1962 [ 49.290991][ T21] in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 21, name: kworker/u4:1 [ 49.306160][ T21] 4 locks held by kworker/u4:1/21: [ 49.312768][ T21] #0: ffff88802cc7c138 ((wq_completion)phy3){+.+.}-{0:0}, at: process_one_work+0x6f4/0xfc0 [ 49.324890][ T21] #1: ffffc90000dbfd80 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x733/0xfc0 2020/11/11 08:22:58 building call list... [ 49.338248][ T21] #2: ffff888021120d00 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x4e/0x1450 [ 49.349469][ T21] #3: ffffffff8bae6840 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 [ 49.359072][ T21] Preemption disabled at: [ 49.361593][ T21] [] __mutex_lock_common+0x15c/0x2f20 [ 49.375097][ T21] CPU: 1 PID: 21 Comm: kworker/u4:1 Not tainted 5.10.0-rc3-syzkaller #0 [ 49.383432][ T21] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.393499][ T21] Workqueue: phy3 ieee80211_iface_work [ 49.398981][ T21] Call Trace: [ 49.402281][ T21] dump_stack+0x137/0x1be [ 49.406612][ T21] ? wake_up_klogd+0xb2/0xf0 [ 49.411216][ T21] ___might_sleep+0x3ef/0x530 [ 49.415903][ T21] ? __mutex_lock_common+0x15c/0x2f20 [ 49.421818][ T21] sta_info_move_state+0x35/0x830 [ 49.426860][ T21] sta_info_free+0xcb/0x330 [ 49.431375][ T21] sta_info_insert_rcu+0x1462/0x1fb0 [ 49.436786][ T21] ? rcu_lock_release+0x5/0x20 executing program [ 49.441566][ T21] ? minstrel_ht_alloc_sta+0x3b0/0x3b0 [ 49.447028][ T21] ? rate_control_rate_init+0x4c6/0x560 [ 49.452708][ T21] ieee80211_ibss_finish_sta+0x21c/0x2e0 [ 49.458793][ T21] ieee80211_ibss_work+0x218/0x1450 [ 49.464007][ T21] ? ieee80211_iface_work+0x949/0xa80 [ 49.469393][ T21] process_one_work+0x789/0xfc0 [ 49.474305][ T21] worker_thread+0xaa4/0x1460 [ 49.479014][ T21] kthread+0x36b/0x390 [ 49.483081][ T21] ? rcu_lock_release+0x20/0x20 [ 49.488124][ T21] ? kthread_blkcg+0xd0/0xd0 [ 49.492726][ T21] ret_from_fork+0x1f/0x30 [ 49.511005][ T21] [ 49.513362][ T21] ============================= [ 49.518208][ T21] [ BUG: Invalid wait context ] [ 49.523118][ T21] 5.10.0-rc3-syzkaller #0 Tainted: G W [ 49.529873][ T21] ----------------------------- [ 49.534707][ T21] kworker/u4:1/21 is trying to lock: [ 49.539988][ T21] ffff888029dfa9d0 (&local->chanctx_mtx){+.+.}-{3:3}, at: ieee80211_recalc_min_chandef+0x4d/0x120 [ 49.550582][ T21] other info that might help us debug this: [ 49.556459][ T21] context-{4:4} [ 49.559915][ T21] 4 locks held by kworker/u4:1/21: [ 49.565007][ T21] #0: ffff88802cc7c138 ((wq_completion)phy3){+.+.}-{0:0}, at: process_one_work+0x6f4/0xfc0 [ 49.575089][ T21] #1: ffffc90000dbfd80 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x733/0xfc0 [ 49.586209][ T21] #2: ffff888021120d00 (&wdev->mtx){+.+.}-{3:3}, at: ieee80211_ibss_work+0x4e/0x1450 [ 49.595759][ T21] #3: ffffffff8bae6840 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x5/0x30 [ 49.605051][ T21] stack backtrace: [ 49.608763][ T21] CPU: 1 PID: 21 Comm: kworker/u4:1 Tainted: G W 5.10.0-rc3-syzkaller #0 [ 49.618462][ T21] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.628536][ T21] Workqueue: phy3 ieee80211_iface_work [ 49.633986][ T21] Call Trace: [ 49.637265][ T21] dump_stack+0x137/0x1be [ 49.641592][ T21] ? wake_up_klogd+0xb2/0xf0 [ 49.646359][ T21] __lock_acquire+0x25be/0x6250 [ 49.651358][ T21] ? rcu_read_lock_sched_held+0x41/0xb0 [ 49.656903][ T21] ? rcu_read_lock_sched_held+0x41/0xb0 [ 49.662442][ T21] lock_acquire+0x114/0x5e0 [ 49.666943][ T21] ? ieee80211_recalc_min_chandef+0x4d/0x120 [ 49.672922][ T21] __mutex_lock_common+0x189/0x2f20 [ 49.678107][ T21] ? ieee80211_recalc_min_chandef+0x4d/0x120 [ 49.684081][ T21] ? ieee80211_clear_fast_rx+0x6f/0xb0 [ 49.689529][ T21] ? ieee80211_clear_fast_rx+0x6f/0xb0 [ 49.694974][ T21] ? rcu_read_lock_sched_held+0x41/0xb0 [ 49.700511][ T21] ? ieee80211_recalc_min_chandef+0x4d/0x120 [ 49.706490][ T21] mutex_lock_nested+0x1a/0x20 [ 49.711246][ T21] ieee80211_recalc_min_chandef+0x4d/0x120 [ 49.717042][ T21] sta_info_move_state+0x38a/0x830 [ 49.722141][ T21] sta_info_free+0xcb/0x330 [ 49.726632][ T21] sta_info_insert_rcu+0x1462/0x1fb0 [ 49.731906][ T21] ? rcu_lock_release+0x5/0x20 [ 49.736667][ T21] ? minstrel_ht_alloc_sta+0x3b0/0x3b0 [ 49.742116][ T21] ? rate_control_rate_init+0x4c6/0x560 [ 49.747651][ T21] ieee80211_ibss_finish_sta+0x21c/0x2e0 [ 49.753273][ T21] ieee80211_ibss_work+0x218/0x1450 [ 49.758461][ T21] ? ieee80211_iface_work+0x949/0xa80 [ 49.763837][ T21] process_one_work+0x789/0xfc0 [ 49.768698][ T21] worker_thread+0xaa4/0x1460 [ 49.773381][ T21] kthread+0x36b/0x390 [ 49.777441][ T21] ? rcu_lock_release+0x20/0x20 [ 49.782627][ T21] ? kthread_blkcg+0xd0/0xd0 [ 49.787206][ T21] ret_from_fork+0x1f/0x30 [ 49.947373][ T79] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 49.977743][ T8457] syz-executor.0 (8457) used greatest stack depth: 23768 bytes left [ 50.053382][ T79] netdevsim netdevsim0 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 50.152246][ T79] netdevsim netdevsim0 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 50.233972][ T79] netdevsim netdevsim0 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 51.443328][ T79] device hsr_slave_0 left promiscuous mode [ 51.451187][ T79] device hsr_slave_1 left promiscuous mode [ 51.457622][ T79] batman_adv: batadv0: Interface deactivated: batadv_slave_0 [ 51.466205][ T79] batman_adv: batadv0: Removing interface: batadv_slave_0 [ 51.475233][ T79] batman_adv: batadv0: Interface deactivated: batadv_slave_1 [ 51.483966][ T79] batman_adv: batadv0: Removing interface: batadv_slave_1 [ 51.492649][ T79] device bridge_slave_1 left promiscuous mode [ 51.499085][ T79] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.507070][ T79] device bridge_slave_0 left promiscuous mode [ 51.514114][ T79] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.523313][ T79] device veth1_macvtap left promiscuous mode [ 51.529713][ T79] device veth0_macvtap left promiscuous mode [ 51.535935][ T79] device veth1_vlan left promiscuous mode [ 51.541724][ T79] device veth0_vlan left promiscuous mode [ 52.302730][ T79] team0 (unregistering): Port device team_slave_1 removed [ 52.312333][ T79] team0 (unregistering): Port device team_slave_0 removed [ 52.322761][ T79] bond0 (unregistering): (slave bond_slave_1): Releasing backup interface [ 52.336075][ T79] bond0 (unregistering): (slave bond_slave_0): Releasing backup interface [ 52.361107][ T79] bond0 (unregistering): Released all slaves [ 52.424081][ T8701] can: request_module (can-proto-0) failed. executing program [ 52.874328][ T8701] can: request_module (can-proto-0) failed. [ 52.884137][ T8701] can: request_module (can-proto-0) failed. [ 53.017734][ T8701] base_sock_release(0000000035399a1a) sk=0000000029105479