[ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 28.516035] audit: type=1400 audit(1590737887.430:8): avc: denied { execmem } for pid=5972 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 28.759087] IPVS: ftp: loaded support on port[0] = 21 [ 29.867470] can: request_module (can-proto-0) failed. [ 29.876805] can: request_module (can-proto-0) failed. [ 29.902538] audit: type=1400 audit(1590737888.820:9): avc: denied { create } for pid=5953 comm="syz-fuzzer" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=dccp_socket permissive=1 Warning: Permanently added '10.128.0.75' (ECDSA) to the list of known hosts. 2020/05/29 07:38:17 parsed 1 programs 2020/05/29 07:38:17 executed programs: 0 [ 38.463339] audit: type=1400 audit(1590737897.383:10): avc: denied { execmem } for pid=6090 comm="syz-executor.4" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 38.715914] IPVS: ftp: loaded support on port[0] = 21 [ 39.493474] IPVS: ftp: loaded support on port[0] = 21 [ 39.547719] chnl_net:caif_netlink_parms(): no params data found [ 39.577324] IPVS: ftp: loaded support on port[0] = 21 [ 39.596796] bridge0: port 1(bridge_slave_0) entered blocking state [ 39.603677] bridge0: port 1(bridge_slave_0) entered disabled state [ 39.612385] device bridge_slave_0 entered promiscuous mode [ 39.619638] bridge0: port 2(bridge_slave_1) entered blocking state [ 39.627121] bridge0: port 2(bridge_slave_1) entered disabled state [ 39.634005] device bridge_slave_1 entered promiscuous mode [ 39.651897] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 39.666727] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 39.723248] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 39.732774] team0: Port device team_slave_0 added [ 39.747673] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 39.755368] team0: Port device team_slave_1 added [ 39.762352] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 39.770031] chnl_net:caif_netlink_parms(): no params data found [ 39.778459] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 39.826784] IPVS: ftp: loaded support on port[0] = 21 [ 39.837860] device hsr_slave_0 entered promiscuous mode [ 39.885876] device hsr_slave_1 entered promiscuous mode [ 39.990926] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 40.004356] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.012478] bridge0: port 1(bridge_slave_0) entered disabled state [ 40.021673] device bridge_slave_0 entered promiscuous mode [ 40.031819] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 40.041570] bridge0: port 2(bridge_slave_1) entered blocking state [ 40.049222] bridge0: port 2(bridge_slave_1) entered disabled state [ 40.056778] device bridge_slave_1 entered promiscuous mode [ 40.070330] chnl_net:caif_netlink_parms(): no params data found [ 40.097769] bridge0: port 2(bridge_slave_1) entered blocking state [ 40.104196] bridge0: port 2(bridge_slave_1) entered forwarding state [ 40.111325] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.117820] bridge0: port 1(bridge_slave_0) entered forwarding state [ 40.141344] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 40.150101] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 40.164229] IPVS: ftp: loaded support on port[0] = 21 [ 40.199553] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 40.207451] team0: Port device team_slave_0 added [ 40.212903] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.221075] bridge0: port 1(bridge_slave_0) entered disabled state [ 40.228615] device bridge_slave_0 entered promiscuous mode [ 40.241296] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 40.248768] team0: Port device team_slave_1 added [ 40.254161] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 40.263717] bridge0: port 2(bridge_slave_1) entered blocking state [ 40.270763] bridge0: port 2(bridge_slave_1) entered disabled state [ 40.278180] device bridge_slave_1 entered promiscuous mode [ 40.287892] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 40.338057] device hsr_slave_0 entered promiscuous mode [ 40.375080] device hsr_slave_1 entered promiscuous mode [ 40.421975] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 40.432460] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 40.440909] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 40.462620] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 40.469219] 8021q: adding VLAN 0 to HW filter on device bond0 [ 40.482550] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 40.496212] IPVS: ftp: loaded support on port[0] = 21 [ 40.514469] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 40.558997] chnl_net:caif_netlink_parms(): no params data found [ 40.580676] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 40.590701] team0: Port device team_slave_0 added [ 40.596895] bridge0: port 2(bridge_slave_1) entered blocking state [ 40.603261] bridge0: port 2(bridge_slave_1) entered forwarding state [ 40.610182] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.616601] bridge0: port 1(bridge_slave_0) entered forwarding state [ 40.624759] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 40.633113] bridge0: port 1(bridge_slave_0) entered disabled state [ 40.640331] bridge0: port 2(bridge_slave_1) entered disabled state [ 40.647391] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 40.654728] bridge0: port 1(bridge_slave_0) entered disabled state [ 40.661377] bridge0: port 2(bridge_slave_1) entered disabled state [ 40.672334] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 40.679159] 8021q: adding VLAN 0 to HW filter on device team0 [ 40.698468] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 40.707673] team0: Port device team_slave_1 added [ 40.713213] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 40.723566] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 40.737484] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 40.744836] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 40.752693] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 40.760891] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.767395] bridge0: port 1(bridge_slave_0) entered forwarding state [ 40.781977] bridge0: port 1(bridge_slave_0) entered blocking state [ 40.790330] bridge0: port 1(bridge_slave_0) entered disabled state [ 40.797812] device bridge_slave_0 entered promiscuous mode [ 40.804405] bridge0: port 2(bridge_slave_1) entered blocking state [ 40.810908] bridge0: port 2(bridge_slave_1) entered disabled state [ 40.818034] device bridge_slave_1 entered promiscuous mode [ 40.837967] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 40.937052] device hsr_slave_0 entered promiscuous mode [ 40.974831] device hsr_slave_1 entered promiscuous mode [ 41.015153] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 41.022244] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 41.030405] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 41.038444] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.044851] bridge0: port 2(bridge_slave_1) entered forwarding state [ 41.053515] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 41.068871] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 41.076710] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 41.084818] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 41.093318] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 41.106906] chnl_net:caif_netlink_parms(): no params data found [ 41.117658] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 41.141319] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 41.156193] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 41.168870] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 41.177700] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 41.191120] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 41.198325] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 41.205879] team0: Port device team_slave_0 added [ 41.221307] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 41.229326] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 41.236509] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 41.244000] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 41.259193] 8021q: adding VLAN 0 to HW filter on device bond0 [ 41.267237] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 41.276457] team0: Port device team_slave_1 added [ 41.294225] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 41.301530] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 41.319426] IPv6: ADDRCONF(NETDEV_UP): veth0_to_hsr: link is not ready [ 41.328111] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 41.336918] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 41.344062] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.351157] bridge0: port 1(bridge_slave_0) entered disabled state [ 41.358638] device bridge_slave_0 entered promiscuous mode [ 41.365998] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.372361] bridge0: port 2(bridge_slave_1) entered disabled state [ 41.379683] device bridge_slave_1 entered promiscuous mode [ 41.387652] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 41.395495] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 41.402969] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 41.410731] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 41.455397] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 41.461506] 8021q: adding VLAN 0 to HW filter on device team0 [ 41.489105] IPv6: ADDRCONF(NETDEV_UP): veth1_to_hsr: link is not ready [ 41.497188] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 41.507018] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 41.519212] chnl_net:caif_netlink_parms(): no params data found [ 41.567409] device hsr_slave_0 entered promiscuous mode [ 41.585012] device hsr_slave_1 entered promiscuous mode [ 41.660933] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 41.669461] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 41.682708] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 41.691604] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 41.699654] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 41.708730] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.715117] bridge0: port 1(bridge_slave_0) entered forwarding state [ 41.722259] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 41.732250] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 41.743297] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 41.759336] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 41.766769] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 41.775743] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 41.797465] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 41.805610] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 41.813258] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.819715] bridge0: port 2(bridge_slave_1) entered forwarding state [ 41.833944] 8021q: adding VLAN 0 to HW filter on device bond0 [ 41.844681] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 41.858829] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 41.867101] team0: Port device team_slave_0 added [ 41.873011] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 41.896835] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 41.904115] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 41.913674] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 41.922568] team0: Port device team_slave_1 added [ 41.927943] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 41.937729] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 41.945398] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.951766] bridge0: port 1(bridge_slave_0) entered disabled state [ 41.963112] device bridge_slave_0 entered promiscuous mode [ 41.969958] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.976761] bridge0: port 2(bridge_slave_1) entered disabled state [ 41.983620] device bridge_slave_1 entered promiscuous mode [ 41.990453] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 42.006171] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 42.015318] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 42.022768] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 42.031619] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 42.053840] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 42.062582] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 42.070752] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 42.078116] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 42.087369] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 42.102559] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 42.110168] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 42.118955] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 42.156097] [ 42.157141] device hsr_slave_0 entered promiscuous mode [ 42.157743] ====================================================== [ 42.169398] WARNING: possible circular locking dependency detected [ 42.175708] 4.14.182-syzkaller #0 Not tainted [ 42.180307] ------------------------------------------------------ [ 42.186603] syz-executor.0/6956 is trying to acquire lock: [ 42.192202] (&cpuctx_mutex/1){+.+.}, at: [] SYSC_perf_event_open+0x110d/0x21b0 [ 42.201382] [ 42.201382] but task is already holding lock: [ 42.207327] (&cpuctx_mutex){+.+.}, at: [] SYSC_perf_event_open+0x10fc/0x21b0 [ 42.216179] [ 42.216179] which lock already depends on the new lock. [ 42.216179] [ 42.224477] [ 42.224477] the existing dependency chain (in reverse order) is: [ 42.232094] [ 42.232094] -> #5 (&cpuctx_mutex){+.+.}: [ 42.237636] lock_acquire+0x173/0x400 [ 42.241951] __mutex_lock+0xef/0x14c0 [ 42.246268] mutex_lock_nested+0x16/0x20 [ 42.250837] perf_event_init_cpu+0xb6/0x160 [ 42.255660] perf_event_init+0x2cd/0x301 [ 42.260339] start_kernel+0x365/0x645 [ 42.264646] x86_64_start_reservations+0x29/0x2b [ 42.269905] x86_64_start_kernel+0x76/0x79 [ 42.274635] secondary_startup_64+0xa5/0xb0 [ 42.279447] [ 42.279447] -> #4 (pmus_lock){+.+.}: [ 42.284620] lock_acquire+0x173/0x400 [ 42.288922] __mutex_lock+0xef/0x14c0 [ 42.293215] mutex_lock_nested+0x16/0x20 [ 42.297774] perf_event_init_cpu+0x2a/0x160 [ 42.302591] cpuhp_invoke_callback+0x191/0x1610 [ 42.308194] _cpu_up+0x21e/0x540 [ 42.312065] do_cpu_up+0xf1/0x110 [ 42.316018] cpu_up+0xe/0x10 [ 42.319537] smp_init+0x69/0x10c [ 42.323401] kernel_init_freeable+0x2d2/0x4ae [ 42.328397] kernel_init+0xc/0x105 [ 42.332447] ret_from_fork+0x24/0x30 [ 42.336658] [ 42.336658] -> #3 (cpu_hotplug_lock.rw_sem){++++}: [ 42.343058] lock_acquire+0x173/0x400 [ 42.347373] cpus_read_lock+0x38/0xa0 [ 42.351664] static_key_slow_inc+0xd/0x20 [ 42.356307] tracepoint_probe_register_prio+0x4de/0x6e0 [ 42.362179] tracepoint_probe_register+0xe/0x10 [ 42.367346] trace_event_reg+0x14d/0x340 [ 42.371986] perf_trace_init+0x3ce/0x9d0 [ 42.376543] perf_tp_event_init+0x68/0xd0 [ 42.381184] perf_try_init_event+0x138/0x1c0 [ 42.386106] perf_event_alloc+0xe0b/0x2220 [ 42.390846] SYSC_perf_event_open+0x447/0x21b0 [ 42.395926] SyS_perf_event_open+0x9/0x10 [ 42.400583] do_syscall_64+0x1c7/0x5b0 [ 42.404970] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 42.410657] [ 42.410657] -> #2 (tracepoints_mutex){+.+.}: [ 42.416524] lock_acquire+0x173/0x400 [ 42.420835] __mutex_lock+0xef/0x14c0 [ 42.425134] mutex_lock_nested+0x16/0x20 [ 42.429699] tracepoint_probe_register_prio+0x30/0x6e0 [ 42.435469] tracepoint_probe_register+0xe/0x10 [ 42.440633] trace_event_reg+0x14d/0x340 [ 42.445190] perf_trace_init+0x3ce/0x9d0 [ 42.449752] perf_tp_event_init+0x68/0xd0 [ 42.454397] perf_try_init_event+0x138/0x1c0 [ 42.459304] perf_event_alloc+0xe0b/0x2220 [ 42.464033] SYSC_perf_event_open+0x447/0x21b0 [ 42.469126] SyS_perf_event_open+0x9/0x10 [ 42.473769] do_syscall_64+0x1c7/0x5b0 [ 42.478173] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 42.483853] [ 42.483853] -> #1 (event_mutex){+.+.}: [ 42.489198] lock_acquire+0x173/0x400 [ 42.493534] __mutex_lock+0xef/0x14c0 [ 42.497857] mutex_lock_nested+0x16/0x20 [ 42.502418] perf_trace_init+0x50/0x9d0 [ 42.506887] perf_tp_event_init+0x68/0xd0 [ 42.511541] perf_try_init_event+0xcf/0x1c0 [ 42.516366] perf_event_alloc+0xe0b/0x2220 [ 42.521106] SYSC_perf_event_open+0x447/0x21b0 [ 42.526198] SyS_perf_event_open+0x9/0x10 [ 42.530849] do_syscall_64+0x1c7/0x5b0 [ 42.535252] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 42.540952] [ 42.540952] -> #0 (&cpuctx_mutex/1){+.+.}: [ 42.546652] __lock_acquire+0x2e94/0x4500 [ 42.551741] lock_acquire+0x173/0x400 [ 42.556045] __mutex_lock+0xef/0x14c0 [ 42.560343] mutex_lock_nested+0x16/0x20 [ 42.564922] SYSC_perf_event_open+0x110d/0x21b0 [ 42.570182] SyS_perf_event_open+0x9/0x10 [ 42.574999] do_syscall_64+0x1c7/0x5b0 [ 42.579394] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 42.585078] [ 42.585078] other info that might help us debug this: [ 42.585078] [ 42.593197] Chain exists of: [ 42.593197] &cpuctx_mutex/1 --> pmus_lock --> &cpuctx_mutex [ 42.593197] [ 42.603403] Possible unsafe locking scenario: [ 42.603403] [ 42.609430] CPU0 CPU1 [ 42.614077] ---- ---- [ 42.618713] lock(&cpuctx_mutex); [ 42.622226] lock(pmus_lock); [ 42.627918] lock(&cpuctx_mutex); [ 42.633966] lock(&cpuctx_mutex/1); [ 42.637662] [ 42.637662] *** DEADLOCK *** [ 42.637662] [ 42.643692] 1 lock held by syz-executor.0/6956: [ 42.648509] #0: (&cpuctx_mutex){+.+.}, at: [] SYSC_perf_event_open+0x10fc/0x21b0 [ 42.657998] [ 42.657998] stack backtrace: [ 42.662493] CPU: 1 PID: 6956 Comm: syz-executor.0 Not tainted 4.14.182-syzkaller #0 [ 42.671150] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.680645] Call Trace: [ 42.683213] dump_stack+0xf7/0x13b [ 42.686742] print_circular_bug.isra.40.cold.67+0x1bd/0x27d [ 42.692466] ? save_trace+0xe0/0x290 [ 42.696200] __lock_acquire+0x2e94/0x4500 [ 42.700335] ? trace_hardirqs_on+0x10/0x10 [ 42.704987] ? trace_hardirqs_off+0x10/0x10 [ 42.709290] ? SYSC_perf_event_open+0x110d/0x21b0 [ 42.714121] lock_acquire+0x173/0x400 [ 42.717919] ? SYSC_perf_event_open+0x110d/0x21b0 [ 42.722747] ? SYSC_perf_event_open+0x110d/0x21b0 [ 42.727563] ? SYSC_perf_event_open+0x110d/0x21b0 [ 42.732510] __mutex_lock+0xef/0x14c0 [ 42.736389] ? SYSC_perf_event_open+0x110d/0x21b0 [ 42.741208] ? trace_hardirqs_on+0x10/0x10 [ 42.745421] ? SYSC_perf_event_open+0x110d/0x21b0 [ 42.750257] ? trace_hardirqs_off+0x10/0x10 [ 42.754574] ? mutex_lock_io_nested+0x1380/0x1380 [ 42.759391] ? find_held_lock+0x36/0x1d0 [ 42.763443] ? SYSC_perf_event_open+0x10bd/0x21b0 [ 42.768272] ? lock_downgrade+0x7f0/0x7f0 [ 42.772403] mutex_lock_nested+0x16/0x20 [ 42.776456] ? mutex_lock_nested+0x16/0x20 [ 42.780661] SYSC_perf_event_open+0x110d/0x21b0 [ 42.785328] ? perf_event_set_output+0x400/0x400 [ 42.790086] ? do_syscall_64+0x4c/0x5b0 [ 42.794044] ? perf_bp_event+0x150/0x150 [ 42.798118] SyS_perf_event_open+0x9/0x10 [ 42.802252] do_syscall_64+0x1c7/0x5b0 [ 42.806134] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 42.811058] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 42.816221] RIP: 0033:0x4592c9 [ 42.819394] RSP: 002b:00007fd5c4f27c78 EFLAGS: 00000246 ORIG_RAX: 000000000000012a [ 42.827078] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00000000004592c9 [ 42.834326] RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 0000000020000200 [ 42.841576] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 42.848933] R10: 0000000000000004 R11: 0000000000000246 R12: 00007fd5c4f286d4 [ 42.856179] R13: 00000000004c5f2a R14: 00000000004da8c8 R15: 00000000ffffffff [ 42.884547] device hsr_slave_1 entered promiscuous mode [ 42.925226] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 42.932681] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 42.946388] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 42.952545] 8021q: adding VLAN 0 to HW filter on device team0 [ 42.960713] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 42.970476] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 42.995120] 8021q: adding VLAN 0 to HW filter on device bond0 [ 43.001810] IPv6: ADDRCONF(NETDEV_UP): veth0_to_hsr: link is not ready [ 43.009560] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 43.018838] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 43.027398] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 43.035638] team0: Port device team_slave_0 added [ 43.040907] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 43.048449] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 43.056093] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 43.064027] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 43.071655] bridge0: port 1(bridge_slave_0) entered blocking state [ 43.078004] bridge0: port 1(bridge_slave_0) entered forwarding state [ 43.084720] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 43.092285] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 43.099883] bridge0: port 2(bridge_slave_1) entered blocking state [ 43.106254] bridge0: port 2(bridge_slave_1) entered forwarding state [ 43.113196] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 43.121434] IPv6: ADDRCONF(NETDEV_UP): veth1_to_hsr: link is not ready [ 43.134945] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 43.142436] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 43.159833] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 43.165923] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 43.173599] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 43.182131] team0: Port device team_slave_1 added [ 43.188179] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 43.196729] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 43.204065] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 43.211479] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 43.220175] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 43.228081] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 43.237527] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 43.245428] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 43.251763] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 43.266431] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 43.283785] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 43.290678] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 43.298150] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 43.306656] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 43.313975] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 43.321367] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 43.329121] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 43.387085] device hsr_slave_0 entered promiscuous mode [ 43.434420] device hsr_slave_1 entered promiscuous mode 2020/05/29 07:38:22 executed programs: 9 [ 43.475809] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 43.481874] 8021q: adding VLAN 0 to HW filter on device team0 [ 43.489637] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 43.498313] IPv6: ADDRCONF(NETDEV_UP): veth0_to_hsr: link is not ready [ 43.508518] 8021q: adding VLAN 0 to HW filter on device bond0 [ 43.515589] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 43.523484] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 43.532452] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 43.541471] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 43.549880] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 43.560138] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 43.567748] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 43.576008] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 43.583386] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 43.591395] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 43.599093] bridge0: port 1(bridge_slave_0) entered blocking state [ 43.605458] bridge0: port 1(bridge_slave_0) entered forwarding state [ 43.612386] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 43.621033] IPv6: ADDRCONF(NETDEV_UP): veth1_to_hsr: link is not ready [ 43.629181] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 43.643259] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 43.651888] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 43.661288] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 43.670100] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 43.676306] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 43.685097] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 43.703262] 8021q: adding VLAN 0 to HW filter on device bond0 [ 43.711315] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 43.720160] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 43.727982] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 43.738334] bridge0: port 2(bridge_slave_1) entered blocking state [ 43.744723] bridge0: port 2(bridge_slave_1) entered forwarding state [ 43.752344] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 43.759928] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 43.770311] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 43.779074] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 43.787196] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 43.800053] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 43.808062] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 43.816878] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 43.822960] 8021q: adding VLAN 0 to HW filter on device team0 [ 43.833318] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 43.840255] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 43.849409] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 43.859283] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 43.867500] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 43.877202] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 43.886260] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 43.893376] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 43.902660] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 43.910763] bridge0: port 1(bridge_slave_0) entered blocking state [ 43.917147] bridge0: port 1(bridge_slave_0) entered forwarding state [ 43.924675] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 43.932153] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 43.940668] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 43.947667] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 43.957073] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 43.965963] IPv6: ADDRCONF(NETDEV_UP): veth0_to_hsr: link is not ready [ 43.973532] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 43.984296] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 43.992321] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 44.000512] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 44.009906] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 44.018925] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 44.025732] 8021q: adding VLAN 0 to HW filter on device team0 [ 44.032916] IPv6: ADDRCONF(NETDEV_UP): veth1_to_hsr: link is not ready [ 44.041192] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 44.048960] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 44.058883] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.065273] bridge0: port 2(bridge_slave_1) entered forwarding state [ 44.072245] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 44.079746] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 44.088592] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 44.097127] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 44.108043] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 44.119262] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 44.126825] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 44.135689] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 44.143343] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 44.151448] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.157822] bridge0: port 1(bridge_slave_0) entered forwarding state [ 44.164972] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 44.172722] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 44.178786] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 44.187064] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 44.194812] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 44.203290] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 44.212620] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 44.220923] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 44.228450] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 44.237044] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 44.245117] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.251440] bridge0: port 2(bridge_slave_1) entered forwarding state [ 44.258614] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 44.266971] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 44.276580] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 44.287946] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 44.296323] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 44.306077] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 44.313653] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 44.329552] IPv6: ADDRCONF(NETDEV_UP): veth0_to_hsr: link is not ready [ 44.336840] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 44.345698] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 44.353047] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 44.361270] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 44.369041] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 44.376896] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 44.384798] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 44.394657] IPv6: ADDRCONF(NETDEV_UP): veth1_to_hsr: link is not ready [ 44.402106] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 44.413488] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 44.419666] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 44.431653] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 44.439682] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 44.449932] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 44.457505] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 44.465515] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 44.476749] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 44.486518] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 44.493670] IPv6: ADDRCONF(NETDEV_UP): veth0_to_hsr: link is not ready [ 44.502610] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 44.510633] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 44.518469] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 44.528573] IPv6: ADDRCONF(NETDEV_UP): veth1_to_hsr: link is not ready [ 44.536510] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 44.546913] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 44.557879] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 44.565055] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 44.576689] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 44.586242] 8021q: adding VLAN 0 to HW filter on device batadv0 2020/05/29 07:38:27 executed programs: 103