[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 43.261803][ T23] audit: type=1800 audit(1575444280.539:25): pid=7984 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 43.281126][ T23] audit: type=1800 audit(1575444280.539:26): pid=7984 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 43.301575][ T23] audit: type=1800 audit(1575444280.539:27): pid=7984 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.173' (ECDSA) to the list of known hosts. 2019/12/04 07:24:50 fuzzer started 2019/12/04 07:24:52 dialing manager at 10.128.0.26:42111 2019/12/04 07:24:52 syscalls: 2689 2019/12/04 07:24:52 code coverage: enabled 2019/12/04 07:24:52 comparison tracing: enabled 2019/12/04 07:24:52 extra coverage: extra coverage is not supported by the kernel 2019/12/04 07:24:52 setuid sandbox: enabled 2019/12/04 07:24:52 namespace sandbox: enabled 2019/12/04 07:24:52 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/04 07:24:52 fault injection: enabled 2019/12/04 07:24:52 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/04 07:24:52 net packet injection: enabled 2019/12/04 07:24:52 net device setup: enabled 2019/12/04 07:24:52 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/04 07:24:52 devlink PCI setup: PCI device 0000:00:10.0 is not available 07:24:53 executing program 0: r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0) getsockopt$bt_BT_POWER(r0, 0x112, 0x9, 0x0, &(0x7f0000000080)) 07:24:53 executing program 1: r0 = socket$inet6(0xa, 0x80003, 0xff) ioctl(r0, 0x1000008912, &(0x7f0000000080)="0800b5055e0bcfe87b2071") r1 = socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_genetlink_get_family_id$fou(&(0x7f00000001c0)='fou\x00') sendmsg$FOU_CMD_GET(r1, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f00000001c0)={0x14, r2, 0x1}, 0x14}}, 0x0) syzkaller login: [ 56.538231][ T8147] IPVS: ftp: loaded support on port[0] = 21 07:24:53 executing program 2: r0 = socket$alg(0x26, 0x5, 0x0) bind$alg(r0, &(0x7f0000000280)={0x26, 'hash\x00', 0x0, 0x0, 'sha512-generic\x00'}, 0x58) r1 = accept$alg(r0, 0x0, 0x0) recvmmsg(r1, &(0x7f0000000680)=[{{0x0, 0x0, 0x0}}], 0x1, 0x0, 0x0) [ 56.685089][ T8150] IPVS: ftp: loaded support on port[0] = 21 [ 56.696045][ T8147] chnl_net:caif_netlink_parms(): no params data found [ 56.789866][ T8147] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.798130][ T8147] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.807883][ T8147] device bridge_slave_0 entered promiscuous mode [ 56.828888][ T8147] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.836546][ T8147] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.846575][ T8147] device bridge_slave_1 entered promiscuous mode [ 56.892859][ T8147] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.917585][ T8147] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.942517][ T8150] chnl_net:caif_netlink_parms(): no params data found [ 56.951437][ T8154] IPVS: ftp: loaded support on port[0] = 21 [ 56.969166][ T8147] team0: Port device team_slave_0 added 07:24:54 executing program 3: r0 = socket(0xa, 0x802, 0x88) connect$inet6(r0, &(0x7f0000000000)={0xa, 0x0, 0x0, @empty}, 0x1c) r1 = socket(0xa, 0x802, 0x88) connect$inet6(r1, &(0x7f0000000000)={0xa, 0x0, 0x0, @ipv4={[], [], @multicast1}}, 0x1c) r2 = socket(0xa, 0x802, 0x88) connect$inet6(r2, &(0x7f0000000000)={0xa, 0x0, 0x0, @dev}, 0x1c) r3 = socket(0xa, 0x802, 0x88) connect$inet6(r3, &(0x7f0000000080)={0xa, 0x0, 0x0, @local}, 0x1c) r4 = socket(0xa, 0x802, 0x88) connect$inet6(r4, &(0x7f0000000000)={0xa, 0x0, 0x0, @ipv4={[], [], @loopback}}, 0x1c) r5 = socket(0xa, 0x802, 0x88) connect$inet6(r5, &(0x7f0000000040)={0xa, 0x0, 0x0, @ipv4={[], [], @loopback}}, 0x1c) r6 = socket(0xa, 0x802, 0x88) connect$inet6(r6, &(0x7f0000000000)={0xa, 0x0, 0x0, @ipv4={[], [], @loopback}}, 0x1c) r7 = socket(0xa, 0x802, 0x88) connect$inet6(r7, &(0x7f0000000000)={0xa, 0x0, 0x0, @ipv4={[], [], @loopback}}, 0x1c) r8 = socket(0xa, 0x802, 0x88) connect$inet6(r8, &(0x7f0000000000)={0xa, 0x0, 0x0, @ipv4={[], [], @loopback}}, 0x1c) r9 = socket(0xa, 0x802, 0x88) connect$inet6(r9, &(0x7f0000000000)={0xa, 0x0, 0x0, @ipv4={[], [], @loopback}}, 0x1c) r10 = socket(0xa, 0x802, 0x88) connect$inet6(r10, &(0x7f0000000000)={0xa, 0x0, 0x0, @ipv4={[], [], @loopback}}, 0x1c) r11 = socket(0xa, 0x802, 0x88) connect$inet6(r11, &(0x7f0000000000)={0xa, 0x0, 0x0, @ipv4={[], [], @loopback}}, 0x1c) r12 = socket(0xa, 0x802, 0x88) connect$inet6(r12, &(0x7f0000000000)={0xa, 0x0, 0x0, @ipv4={[], [], @loopback}}, 0x1c) r13 = socket(0xa, 0x802, 0x88) connect$inet6(r13, &(0x7f0000000000)={0xa, 0x0, 0x0, @mcast2}, 0x1c) r14 = socket(0xa, 0x802, 0x88) connect$inet6(r14, &(0x7f0000000000)={0xa, 0x0, 0x0, @ipv4={[], [], @multicast2}}, 0x1c) r15 = socket(0xa, 0x802, 0x88) connect$inet6(r15, &(0x7f0000000000)={0xa, 0x0, 0x0, @remote}, 0x1c) r16 = socket(0xa, 0x802, 0x88) connect$inet6(r16, &(0x7f0000000000)={0xa, 0x0, 0x0, @mcast2}, 0x1c) r17 = socket(0xa, 0x802, 0x88) connect$inet6(r17, &(0x7f0000000000)={0xa, 0x0, 0x0, @ipv4={[], [], @multicast2}}, 0x1c) r18 = socket(0xa, 0x802, 0x88) connect$inet6(r18, &(0x7f0000000000)={0xa, 0x0, 0x0, @ipv4={[], [], @multicast2}}, 0x1c) r19 = socket(0xa, 0x802, 0x88) connect$inet6(r19, &(0x7f0000000000)={0xa, 0x0, 0x0, @ipv4={[], [], @loopback}}, 0x1c) r20 = socket(0xa, 0x802, 0x88) connect$inet6(r20, &(0x7f0000000000)={0xa, 0x0, 0x0, @ipv4={[], [], @loopback}}, 0x1c) r21 = socket$netlink(0x10, 0x3, 0x4) writev(r21, &(0x7f0000fb1000)=[{&(0x7f0000000180)="480000001400197f09004b0101048c590a88ffffff010001000000000028213ee20600d4ff5bffff00c7e5ed5e00000000000000000000eaf60d18125d4b18857a9eace3dbe8b12c", 0x48}], 0x1) [ 56.994805][ T8147] team0: Port device team_slave_1 added [ 57.092665][ T8147] device hsr_slave_0 entered promiscuous mode [ 57.130245][ T8147] device hsr_slave_1 entered promiscuous mode [ 57.183144][ T8150] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.200023][ T8150] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.207702][ T8150] device bridge_slave_0 entered promiscuous mode [ 57.234095][ T8156] IPVS: ftp: loaded support on port[0] = 21 [ 57.261261][ T8150] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.268460][ T8150] bridge0: port 2(bridge_slave_1) entered disabled state 07:24:54 executing program 4: timer_create(0xfbfffffffffffffd, 0x0, &(0x7f0000000100)) timer_settime(0x0, 0x0, &(0x7f0000000040)={{0x77359400}, {0x0, 0x1c9c380}}, 0x0) timer_settime(0x0, 0x0, &(0x7f0000000000), &(0x7f0000d43000)) [ 57.291154][ T8150] device bridge_slave_1 entered promiscuous mode [ 57.414041][ T8147] netdevsim netdevsim0 netdevsim0: renamed from eth0 07:24:54 executing program 5: setresgid(0x0, 0xee01, 0x0) setgroups(0x0, 0x0) r0 = socket$inet_udplite(0x2, 0x2, 0x88) getsockopt$sock_cred(r0, 0x1, 0x11, &(0x7f0000000240)={0x0, 0x0}, &(0x7f0000000280)=0x5) setuid(r1) shmget$private(0x0, 0x3000, 0x900, &(0x7f0000ffd000/0x3000)=nil) [ 57.502127][ T8147] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 57.557323][ T8150] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.571076][ T8150] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.589573][ T8147] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 57.663871][ T8147] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 57.716142][ T8150] team0: Port device team_slave_0 added [ 57.723330][ T8150] team0: Port device team_slave_1 added [ 57.735130][ T8154] chnl_net:caif_netlink_parms(): no params data found [ 57.763467][ T8159] IPVS: ftp: loaded support on port[0] = 21 [ 57.812981][ T8150] device hsr_slave_0 entered promiscuous mode [ 57.880334][ T8150] device hsr_slave_1 entered promiscuous mode [ 57.931491][ T8150] debugfs: Directory 'hsr0' with parent '/' already present! [ 57.947677][ T8161] IPVS: ftp: loaded support on port[0] = 21 [ 57.968419][ T8154] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.975608][ T8154] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.983622][ T8154] device bridge_slave_0 entered promiscuous mode [ 58.007108][ T8154] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.015103][ T8154] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.022991][ T8154] device bridge_slave_1 entered promiscuous mode [ 58.085970][ T8150] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 58.144339][ T8150] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 58.195616][ T8154] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.207572][ T8154] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.219638][ T8150] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 58.281622][ T8154] team0: Port device team_slave_0 added [ 58.289376][ T8154] team0: Port device team_slave_1 added [ 58.295327][ T8150] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 58.422626][ T8154] device hsr_slave_0 entered promiscuous mode [ 58.470907][ T8154] device hsr_slave_1 entered promiscuous mode [ 58.510374][ T8154] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.529811][ T8156] chnl_net:caif_netlink_parms(): no params data found [ 58.625928][ T8156] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.633220][ T8156] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.643217][ T8156] device bridge_slave_0 entered promiscuous mode [ 58.658849][ T8159] chnl_net:caif_netlink_parms(): no params data found [ 58.674880][ T8161] chnl_net:caif_netlink_parms(): no params data found [ 58.683610][ T8156] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.691978][ T8156] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.699592][ T8156] device bridge_slave_1 entered promiscuous mode [ 58.724336][ T8156] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.746268][ T8147] 8021q: adding VLAN 0 to HW filter on device bond0 [ 58.754063][ T8154] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 58.795522][ T8154] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 58.853055][ T8156] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.885530][ T8154] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 58.945818][ T8154] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 59.002752][ T8161] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.010827][ T8161] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.018593][ T8161] device bridge_slave_0 entered promiscuous mode [ 59.026789][ T8161] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.034271][ T8161] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.042166][ T8161] device bridge_slave_1 entered promiscuous mode [ 59.057477][ T8156] team0: Port device team_slave_0 added [ 59.064675][ T8159] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.072006][ T8159] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.079750][ T8159] device bridge_slave_0 entered promiscuous mode [ 59.087742][ T8159] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.095310][ T8159] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.103456][ T8159] device bridge_slave_1 entered promiscuous mode [ 59.123906][ T8156] team0: Port device team_slave_1 added [ 59.135566][ T8147] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.155136][ T8161] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.169169][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 59.177806][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.185983][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 59.194694][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.203092][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.210278][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.219099][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 59.244607][ T8159] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.257305][ T8161] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.286884][ T8159] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.304568][ T8161] team0: Port device team_slave_0 added [ 59.316575][ T8150] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.327763][ T2958] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 59.337161][ T2958] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.345970][ T2958] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.353254][ T2958] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.413059][ T8156] device hsr_slave_0 entered promiscuous mode [ 59.450738][ T8156] device hsr_slave_1 entered promiscuous mode [ 59.500068][ T8156] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.508936][ T8161] team0: Port device team_slave_1 added [ 59.523271][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 59.532087][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 59.542156][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 59.551274][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 59.559549][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 59.568339][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 59.577699][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 59.586227][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 59.595101][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 59.603584][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 59.616096][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 59.625576][ T8147] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 59.641153][ T3900] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 59.648704][ T3900] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.659074][ T8159] team0: Port device team_slave_0 added [ 59.668380][ T8159] team0: Port device team_slave_1 added [ 59.677498][ T8150] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.687484][ T8154] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.751773][ T8159] device hsr_slave_0 entered promiscuous mode [ 59.800405][ T8159] device hsr_slave_1 entered promiscuous mode [ 59.840283][ T8159] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.858686][ T8154] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.913556][ T8161] device hsr_slave_0 entered promiscuous mode [ 59.960350][ T8161] device hsr_slave_1 entered promiscuous mode [ 60.010173][ T8161] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.021394][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 60.028771][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 60.036436][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 60.044563][ T45] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.054034][ T8147] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 60.082393][ T3900] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 60.099213][ T3900] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 60.108081][ T3900] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.115289][ T3900] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.124220][ T3900] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 60.132949][ T3900] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 60.141578][ T3900] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.148612][ T3900] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.156236][ T3900] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 60.165568][ T3900] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 60.174105][ T3900] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.181190][ T3900] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.188787][ T3900] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 60.236779][ T3900] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 60.251396][ T3900] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 60.263848][ T3900] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 60.276771][ T3900] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 60.289181][ T3900] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.296343][ T3900] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.311206][ T3900] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 60.351690][ T8156] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 165.279879][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 165.286667][ C1] rcu: 1-...!: (10499 ticks this GP) idle=456/1/0x4000000000000002 softirq=10236/10236 fqs=3 [ 165.297141][ C1] (t=10501 jiffies g=6161 q=132) [ 165.302160][ C1] rcu: rcu_preempt kthread starved for 10494 jiffies! g6161 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 165.313239][ C1] rcu: RCU grace-period kthread stack dump: [ 165.319894][ C1] rcu_preempt R running task 29032 10 2 0x80004000 [ 165.327786][ C1] Call Trace: [ 165.331069][ C1] __schedule+0x9a0/0xcc0 [ 165.335393][ C1] schedule+0x181/0x210 [ 165.339547][ C1] schedule_timeout+0x14f/0x240 [ 165.344381][ C1] ? run_local_timers+0x120/0x120 [ 165.349393][ C1] rcu_gp_kthread+0xed8/0x1770 [ 165.354151][ C1] kthread+0x332/0x350 [ 165.358203][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 165.363310][ C1] ? kthread_blkcg+0xe0/0xe0 [ 165.367886][ C1] ret_from_fork+0x24/0x30 [ 165.372300][ C1] NMI backtrace for cpu 1 [ 165.376617][ C1] CPU: 1 PID: 8169 Comm: syz-executor.0 Not tainted 5.4.0-syzkaller #0 [ 165.384834][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 165.394869][ C1] Call Trace: [ 165.398135][ C1] [ 165.400981][ C1] dump_stack+0x1fb/0x318 [ 165.405297][ C1] nmi_cpu_backtrace+0xaf/0x1a0 [ 165.410134][ C1] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 165.416275][ C1] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 165.422327][ C1] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 165.428814][ C1] arch_trigger_cpumask_backtrace+0x10/0x20 [ 165.434718][ C1] rcu_dump_cpu_stacks+0x15a/0x220 [ 165.439827][ C1] rcu_sched_clock_irq+0xe25/0x1ad0 [ 165.445012][ C1] ? trace_hardirqs_off+0x74/0x80 [ 165.450023][ C1] update_process_times+0x12d/0x180 [ 165.455206][ C1] tick_sched_timer+0x263/0x420 [ 165.460056][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 165.465589][ C1] __hrtimer_run_queues+0x403/0x840 [ 165.470786][ C1] hrtimer_interrupt+0x38c/0xda0 [ 165.475728][ C1] ? debug_smp_processor_id+0x9/0x20 [ 165.481001][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 165.486533][ C1] apic_timer_interrupt+0xf/0x20 [ 165.491448][ C1] [ 165.494376][ C1] RIP: 0010:mod_memcg_page_state+0xe/0x190 [ 165.500166][ C1] Code: 00 eb 05 e8 04 29 2e 00 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 1f 44 00 00 55 48 89 e5 41 57 41 56 41 54 53 41 89 f6 <48> 89 fb e8 da 28 2e 00 48 83 c3 38 48 89 d8 48 c1 e8 03 49 bc 00 [ 165.519752][ C1] RSP: 0018:ffffc90002b97818 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 165.529970][ C1] RAX: 1ffff11015268321 RBX: ffff8880a9341908 RCX: 0000000000000000 [ 165.537938][ C1] RDX: ffffc90001df9000 RSI: 00000000fffffffc RDI: ffffea00024bbfc0 [ 165.545908][ C1] RBP: ffffc90002b97838 R08: dffffc0000000000 R09: fffffbfff12877ed [ 165.553883][ C1] R10: fffffbfff12877ed R11: 0000000000000000 R12: ffff8880a93419a0 [ 165.561852][ C1] R13: dffffc0000000000 R14: 00000000fffffffc R15: ffff8880a86a79e8 [ 165.569943][ C1] free_thread_stack+0x168/0x590 [ 165.574869][ C1] put_task_stack+0xa3/0x130 [ 165.579461][ C1] finish_task_switch+0x3f1/0x550 [ 165.584490][ C1] __schedule+0x9a8/0xcc0 [ 165.588815][ C1] schedule+0x181/0x210 [ 165.592962][ C1] futex_wait_queue_me+0x2a3/0x4b0 [ 165.598064][ C1] futex_wait+0x252/0x770 [ 165.602419][ C1] do_futex+0x437/0x3d60 [ 165.606651][ C1] ? __lock_acquire+0xc75/0x1be0 [ 165.611586][ C1] ? trace_hardirqs_on+0x74/0x80 [ 165.616516][ C1] ? task_work_run+0x139/0x1b0 [ 165.621265][ C1] ? __might_fault+0xf9/0x160 [ 165.625933][ C1] ? __might_fault+0xf9/0x160 [ 165.630599][ C1] ? check_preemption_disabled+0xb4/0x260 [ 165.636299][ C1] ? debug_smp_processor_id+0x9/0x20 [ 165.641572][ C1] __se_sys_futex+0x28c/0x360 [ 165.646235][ C1] ? prepare_exit_to_usermode+0x221/0x5b0 [ 165.651938][ C1] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 165.657639][ C1] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 165.663083][ C1] __x64_sys_futex+0xe5/0x100 [ 165.667754][ C1] do_syscall_64+0xf7/0x1c0 [ 165.672248][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 165.678125][ C1] RIP: 0033:0x45a679 [ 165.682014][ C1] Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 165.702227][ C1] RSP: 002b:00007fe35df34cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 165.710633][ C1] RAX: ffffffffffffffda RBX: 000000000075bf28 RCX: 000000000045a679 [ 165.718589][ C1] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000075bf28 [ 165.726543][ C1] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 165.734500][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000075bf2c [ 165.742455][ C1] R13: 00007ffc82a7af4f R14: 00007fe35df359c0 R15: 000000000075bf2c