[ 43.911075][ T25] audit: type=1800 audit(1575440996.837:26): pid=7993 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 43.939470][ T25] audit: type=1800 audit(1575440996.837:27): pid=7993 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 43.939490][ T25] audit: type=1800 audit(1575440996.837:28): pid=7993 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 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. [ 44.690838][ T25] audit: type=1800 audit(1575440997.637:29): pid=7993 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.34' (ECDSA) to the list of known hosts. 2019/12/04 06:30:07 fuzzer started 2019/12/04 06:30:09 dialing manager at 10.128.0.26:42111 2019/12/04 06:30:09 syscalls: 2689 2019/12/04 06:30:09 code coverage: enabled 2019/12/04 06:30:09 comparison tracing: enabled 2019/12/04 06:30:09 extra coverage: extra coverage is not supported by the kernel 2019/12/04 06:30:09 setuid sandbox: enabled 2019/12/04 06:30:09 namespace sandbox: enabled 2019/12/04 06:30:09 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/04 06:30:09 fault injection: enabled 2019/12/04 06:30:09 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/04 06:30:09 net packet injection: enabled 2019/12/04 06:30:09 net device setup: enabled 2019/12/04 06:30:09 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/04 06:30:09 devlink PCI setup: PCI device 0000:00:10.0 is not available 06:30:10 executing program 0: perf_event_open(&(0x7f0000000100)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3c43, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_bp={0x0}}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) r0 = socket$can_bcm(0x1d, 0x2, 0x2) io_setup(0x9, &(0x7f0000000240)=0x0) connect$can_bcm(r0, &(0x7f0000000140), 0x10) io_submit(r1, 0x2, &(0x7f0000000080)=[&(0x7f00000000c0)={0x0, 0x0, 0x0, 0x1, 0x0, r0, &(0x7f0000000200)="0500000093c21faf16da39de706f646800580f02000000003f420f000000000000580f02000000003f420f000000000000ffffffff000000", 0x20000238}]) io_submit(r1, 0x2000000000000072, &(0x7f0000000080)) 06:30:10 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000200)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_ENABLE_CAP_CPU(r2, 0xc008ae88, &(0x7f00000000c0)={0xfffffdfd, 0x4, [], [0x3a]}) syzkaller login: [ 57.550628][ T8155] IPVS: ftp: loaded support on port[0] = 21 06:30:10 executing program 2: r0 = socket$inet_udplite(0x2, 0x2, 0x88) r1 = dup2(r0, 0xffffffffffffffff) ioctl$PIO_UNISCRNMAP(r1, 0x4b6a, &(0x7f0000000380)="2d190c33c132bb64c1417f0b7d49035e6cc3737ae314319f4b4d") perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7f, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_bp={0x0}}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) getresuid(&(0x7f00000000c0), &(0x7f0000000100)=0x0, &(0x7f0000000140)) mount$overlay(0x0, &(0x7f0000000000)='./file0\x00', &(0x7f0000000040)='overlay\x00', 0x1, &(0x7f0000000180)={[{@workdir={'workdir', 0x3d, './file0'}}], [{@fsname={'fsname', 0x3d, 'TIPCv2\x00'}}, {@uid_gt={'uid>', r2}}, {@smackfshat={'smackfshat', 0x3d, 'TIPCv2\x00'}}]}) unshare(0x20000) r3 = syz_open_procfs$namespace(0x0, &(0x7f00000003c0)='ns/mnt\x00\x84<1\x03\x9c+]\xb1t\xf45\x9f\x1b\x85\x15\xde\xd8\xe0\x17\xd9\xae\x1d8\x88\xa1\x9c\x9bc\xde_\xddf\xdc\xf0z2\xf1\x9e\xef\xadsx]\x92N\x92$\x8b\xf7\xe0n\x1e\xd5[\xb2P\xbe\x0f[.\x97\xed\xf4\xc9A\xa2#8\x81\x9ff\xba\x8c;\x14\xc4\x84\xc0t\xcf\xbake\x14tr/f\xdb\xd4\x0fc#\xa1\xe0\x80\x12\x92\x98q\xa2\x8b\xact\x03N\xfd?I\xbc\x1f\x1c\xd9U\xd7\x19N\xb5j@\xff\xb7\xe8I\b\a\xaf;]\a') creat(&(0x7f0000000080)='./file0\x00', 0x0) syz_genetlink_get_family_id$SEG6(0x0) pivot_root(0x0, 0x0) setsockopt$inet6_MCAST_JOIN_GROUP(0xffffffffffffffff, 0x29, 0x2a, 0x0, 0x0) syz_genetlink_get_family_id$tipc(0x0) ioctl$sock_ifreq(0xffffffffffffffff, 0x0, &(0x7f0000000080)={'ip_vti0\x00', @ifru_flags}) syz_genetlink_get_family_id$tipc2(&(0x7f00000005c0)='TIPCv2\x00') r4 = socket$inet6(0xa, 0x2, 0x0) getsockopt$inet_sctp6_SCTP_I_WANT_MAPPED_V4_ADDR(r4, 0x84, 0xc, &(0x7f0000000200), &(0x7f0000000240)=0x4) sendmsg$TIPC_NL_MEDIA_SET(0xffffffffffffffff, 0x0, 0x0) setns(r3, 0x0) write$binfmt_script(0xffffffffffffffff, 0x0, 0x0) alarm(0x0) ioctl$int_in(r0, 0x5421, &(0x7f0000000280)=0xfffffffffffffff8) socket$nl_route(0x10, 0x3, 0x0) [ 57.712952][ T8157] IPVS: ftp: loaded support on port[0] = 21 [ 57.731161][ T8155] chnl_net:caif_netlink_parms(): no params data found [ 57.798805][ T8155] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.809368][ T8155] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.821111][ T8155] device bridge_slave_0 entered promiscuous mode [ 57.840611][ T8155] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.848168][ T8155] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.856227][ T8155] device bridge_slave_1 entered promiscuous mode [ 57.896540][ T8155] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.907196][ T8155] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.934015][ T8155] team0: Port device team_slave_0 added [ 57.941462][ T8155] team0: Port device team_slave_1 added [ 57.969419][ T8157] chnl_net:caif_netlink_parms(): no params data found 06:30:11 executing program 3: r0 = socket$netlink(0x10, 0x3, 0x4) write(r0, &(0x7f0000000440)="2700000014000710030e0000120f0e002c000300f5fe887bad6875501bddc9efa73c5da71a151f", 0x27) [ 58.043627][ T8155] device hsr_slave_0 entered promiscuous mode [ 58.092209][ T8155] device hsr_slave_1 entered promiscuous mode [ 58.187665][ T8163] IPVS: ftp: loaded support on port[0] = 21 [ 58.214974][ T8161] IPVS: ftp: loaded support on port[0] = 21 06:30:11 executing program 4: r0 = socket$nl_generic(0x10, 0x3, 0x10) r1 = syz_genetlink_get_family_id$SEG6(&(0x7f0000000340)='SEG6\x00') sendmsg$SEG6_CMD_GET_TUNSRC(r0, &(0x7f0000000440)={0x0, 0x0, &(0x7f00000003c0)={&(0x7f00000001c0)={0x14, r1, 0xfc373bf004be72e5}, 0x14}}, 0x0) [ 58.243668][ T8155] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 58.302298][ T8157] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.309366][ T8157] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.334767][ T8157] device bridge_slave_0 entered promiscuous mode [ 58.355240][ T8155] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 58.414507][ T8155] netdevsim netdevsim0 netdevsim2: renamed from eth2 06:30:11 executing program 5: r0 = socket$alg(0x26, 0x5, 0x0) bind$alg(r0, &(0x7f0000000240)={0x26, 'skcipher\x00', 0x0, 0x0, 'ecb-twofish-3way\x00'}, 0x58) setsockopt$ALG_SET_KEY(r0, 0x117, 0x1, &(0x7f00000001c0)="0483b846d80fe7305d8c78ac91ec5e63", 0x10) r1 = accept(r0, 0x0, 0x0) sendto$unix(r1, &(0x7f0000000000)="55644677af5cf8d7e38f652dc8ec5bace3c478e7028f5fc1cdb8e7a4b5dc6c97", 0x20, 0x0, 0x0, 0x0) recvfrom$inet6(r1, &(0x7f00000000c0)=""/222, 0x21, 0x0, 0x0, 0x0) [ 58.469805][ T8157] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.478782][ T8157] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.487210][ T8157] device bridge_slave_1 entered promiscuous mode [ 58.501181][ T8155] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 58.503319][ T8166] IPVS: ftp: loaded support on port[0] = 21 [ 58.608569][ T8157] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.619224][ T8157] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.653911][ T8157] team0: Port device team_slave_0 added [ 58.676552][ T8157] team0: Port device team_slave_1 added [ 58.677899][ T8168] IPVS: ftp: loaded support on port[0] = 21 [ 58.753564][ T8157] device hsr_slave_0 entered promiscuous mode [ 58.781251][ T8157] device hsr_slave_1 entered promiscuous mode [ 58.831126][ T8157] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.848438][ T8155] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.855601][ T8155] bridge0: port 2(bridge_slave_1) entered forwarding state [ 58.863328][ T8155] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.870369][ T8155] bridge0: port 1(bridge_slave_0) entered forwarding state [ 58.883673][ T8165] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.891916][ T8165] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.009588][ T8161] chnl_net:caif_netlink_parms(): no params data found [ 59.072183][ T8157] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 59.114210][ T8157] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 59.174209][ T8157] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 59.233547][ T8157] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 59.283188][ T8161] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.290261][ T8161] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.299275][ T8161] device bridge_slave_0 entered promiscuous mode [ 59.306919][ T8161] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.314035][ T8161] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.322081][ T8161] device bridge_slave_1 entered promiscuous mode [ 59.329059][ T8166] chnl_net:caif_netlink_parms(): no params data found [ 59.337843][ T8163] chnl_net:caif_netlink_parms(): no params data found [ 59.394935][ T8163] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.402955][ T8163] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.410522][ T8163] device bridge_slave_0 entered promiscuous mode [ 59.420882][ T8163] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.428008][ T8163] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.436027][ T8163] device bridge_slave_1 entered promiscuous mode [ 59.445089][ T8161] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.456297][ T8161] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.515369][ T8155] 8021q: adding VLAN 0 to HW filter on device bond0 [ 59.541878][ T8161] team0: Port device team_slave_0 added [ 59.548603][ T8166] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.555828][ T8166] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.563749][ T8166] device bridge_slave_0 entered promiscuous mode [ 59.572506][ T8166] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.579555][ T8166] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.587720][ T8166] device bridge_slave_1 entered promiscuous mode [ 59.596813][ T8163] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.613063][ T8168] chnl_net:caif_netlink_parms(): no params data found [ 59.625425][ T8161] team0: Port device team_slave_1 added [ 59.637518][ T3692] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 59.647104][ T3692] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.657455][ T8163] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.668111][ T8155] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.688168][ T8166] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.722737][ T8165] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 59.732195][ T8165] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.740771][ T8165] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.748133][ T8165] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.757480][ T8166] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.790825][ T8163] team0: Port device team_slave_0 added [ 59.801449][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 59.810392][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.819171][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.826264][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 59.835110][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 59.843913][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 59.913608][ T8161] device hsr_slave_0 entered promiscuous mode [ 59.941245][ T8161] device hsr_slave_1 entered promiscuous mode [ 59.991131][ T8161] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.010865][ T8163] team0: Port device team_slave_1 added [ 60.026326][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 60.035315][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 60.046584][ T8166] team0: Port device team_slave_0 added [ 60.055623][ T8166] team0: Port device team_slave_1 added [ 60.070598][ T8168] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.078624][ T8168] bridge0: port 1(bridge_slave_0) entered disabled state [ 60.086583][ T8168] device bridge_slave_0 entered promiscuous mode [ 60.094387][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 60.102706][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 60.111678][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 60.126884][ T8168] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.134687][ T8168] bridge0: port 2(bridge_slave_1) entered disabled state [ 60.145234][ T8168] device bridge_slave_1 entered promiscuous mode [ 60.223534][ T8166] device hsr_slave_0 entered promiscuous mode [ 60.261399][ T8166] device hsr_slave_1 entered promiscuous mode [ 60.311072][ T8166] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.319072][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 60.328258][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 60.336929][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 60.345226][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 60.353843][ T8161] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 60.406285][ T8161] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 60.463129][ T8161] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 60.526556][ T8161] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 60.587146][ T8157] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.632742][ T8163] device hsr_slave_0 entered promiscuous mode [ 60.702015][ T8163] device hsr_slave_1 entered promiscuous mode [ 60.741182][ T8163] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.749728][ T8155] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 60.759668][ T8168] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 60.770851][ T8168] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.798314][ T8168] team0: Port device team_slave_0 added [ 60.821507][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 60.829206][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.845170][ T8168] team0: Port device team_slave_1 added [ 60.874740][ T8157] 8021q: adding VLAN 0 to HW filter on device team0 [ 60.892853][ T8163] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 60.922530][ T8166] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 60.977041][ T8166] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 61.082822][ T8168] device hsr_slave_0 entered promiscuous mode [ 61.131311][ T8168] device hsr_slave_1 entered promiscuous mode [ 61.181114][ T8168] debugfs: Directory 'hsr0' with parent '/' already present! [ 61.189751][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 61.197211][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 61.211249][ T8163] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 61.243695][ T8166] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 61.286083][ T8155] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 61.299746][ T8163] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 61.345251][ T8166] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 61.402796][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 61.411631][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 61.419915][ T43] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.427008][ T43] bridge0: port 1(bridge_slave_0) entered forwarding state [ 61.435167][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 61.467931][ T8163] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 166.500924][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 166.507705][ C1] rcu: 1-....: (1 GPs behind) idle=e62/1/0x4000000000000002 softirq=11504/11505 fqs=2798 [ 166.518298][ C1] (t=10500 jiffies g=6393 q=206) [ 166.523316][ C1] rcu: rcu_preempt kthread starved for 4897 jiffies! g6393 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 166.534314][ C1] rcu: RCU grace-period kthread stack dump: [ 166.540368][ C1] rcu_preempt R running task 29104 10 2 0x80004000 [ 166.548264][ C1] Call Trace: [ 166.551556][ C1] __schedule+0x9a0/0xcc0 [ 166.555885][ C1] schedule+0x181/0x210 [ 166.560059][ C1] schedule_timeout+0x14f/0x240 [ 166.564908][ C1] ? run_local_timers+0x120/0x120 [ 166.570019][ C1] rcu_gp_kthread+0xed8/0x1770 [ 166.574783][ C1] kthread+0x332/0x350 [ 166.578840][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 166.583942][ C1] ? kthread_blkcg+0xe0/0xe0 [ 166.588530][ C1] ret_from_fork+0x24/0x30 [ 166.592954][ C1] NMI backtrace for cpu 1 [ 166.597279][ C1] CPU: 1 PID: 8176 Comm: syz-executor.0 Not tainted 5.4.0-syzkaller #0 [ 166.606199][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 166.616343][ C1] Call Trace: [ 166.619619][ C1] [ 166.622468][ C1] dump_stack+0x1fb/0x318 [ 166.626787][ C1] nmi_cpu_backtrace+0xaf/0x1a0 [ 166.631634][ C1] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 166.637782][ C1] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 166.643845][ C1] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 166.649815][ C1] arch_trigger_cpumask_backtrace+0x10/0x20 [ 166.655702][ C1] rcu_dump_cpu_stacks+0x15a/0x220 [ 166.660811][ C1] rcu_sched_clock_irq+0xe25/0x1ad0 [ 166.666012][ C1] ? trace_hardirqs_off+0x74/0x80 [ 166.671057][ C1] update_process_times+0x12d/0x180 [ 166.676426][ C1] tick_sched_timer+0x263/0x420 [ 166.681270][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 166.686805][ C1] __hrtimer_run_queues+0x403/0x840 [ 166.692031][ C1] hrtimer_interrupt+0x38c/0xda0 [ 166.696987][ C1] ? debug_smp_processor_id+0x9/0x20 [ 166.702272][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 166.707808][ C1] apic_timer_interrupt+0xf/0x20 [ 166.712748][ C1] [ 166.715689][ C1] RIP: 0010:__sanitizer_cov_trace_pc+0x48/0x50 [ 166.721986][ C1] Code: 80 13 00 00 83 fa 02 75 21 48 8b 91 88 13 00 00 48 8b 32 48 8d 7e 01 8b 89 84 13 00 00 48 39 cf 73 08 48 89 44 f2 08 48 89 3a 0f 1f 80 00 00 00 00 4c 8b 04 24 65 48 8b 04 25 c0 1d 02 00 65 [ 166.741674][ C1] RSP: 0018:ffffc90002137880 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 [ 166.750077][ C1] RAX: ffffffff81486ea4 RBX: ffffea00026a52c0 RCX: ffff88809976c500 [ 166.758048][ C1] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea00026a52c0 [ 166.766010][ C1] RBP: ffffc900021378c0 R08: dffffc0000000000 R09: fffffbfff120248a [ 166.773973][ C1] R10: fffffbfff120248a R11: 0000000000000000 R12: ffff88809801a9a0 [ 166.781935][ C1] R13: dffffc0000000000 R14: 1ffff11013003534 R15: ffff88809532d8e8 [ 166.790268][ C1] ? free_thread_stack+0x124/0x590 [ 166.795375][ C1] ? free_thread_stack+0x124/0x590 [ 166.800481][ C1] put_task_stack+0xa3/0x130 [ 166.805071][ C1] finish_task_switch+0x3f1/0x550 [ 166.810093][ C1] __schedule+0x9a8/0xcc0 [ 166.814426][ C1] ? ___preempt_schedule+0x16/0x18 [ 166.819528][ C1] preempt_schedule+0xdb/0x120 [ 166.824453][ C1] ___preempt_schedule+0x16/0x18 [ 166.829401][ C1] ? page_poisoning_enabled+0x1c/0x30 [ 166.834767][ C1] prep_new_page+0x161/0x2e0 [ 166.839359][ C1] get_page_from_freelist+0x850/0xaa0 [ 166.844733][ C1] __alloc_pages_nodemask+0x264/0x5d0 [ 166.850107][ C1] alloc_pages_vma+0x94a/0xd50 [ 166.854866][ C1] do_huge_pmd_anonymous_page+0x883/0xe50 [ 166.860586][ C1] handle_mm_fault+0x2017/0x2890 [ 166.865537][ C1] do_user_addr_fault+0x589/0xaf0 [ 166.870998][ C1] __do_page_fault+0xd3/0x1f0 [ 166.875669][ C1] do_page_fault+0x99/0xb0 [ 166.880076][ C1] page_fault+0x39/0x40 [ 166.884227][ C1] RIP: 0033:0x400644 [ 166.888112][ C1] Code: 06 e9 49 01 00 00 48 8b 44 24 10 48 0b 44 24 28 75 1f 48 8b 14 24 48 8b 7c 24 20 be 04 00 00 00 e8 91 55 00 00 48 8b 74 24 08 <89> 06 e9 1e 01 00 00 48 8b 44 24 08 48 8b 14 24 be 04 00 00 00 8b [ 166.907708][ C1] RSP: 002b:00007ffce5695c30 EFLAGS: 00010206 [ 166.913851][ C1] RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000000 [ 166.921808][ C1] RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000001 [ 166.929773][ C1] RBP: 0000000000760000 R08: 0000000000000000 R09: 0000000000000000 [ 166.937734][ C1] R10: 0000000000000075 R11: 0000000000000246 R12: 0000000000000001 [ 166.945786][ C1] R13: 00007ffce5695e50 R14: 0000000000760008 R15: 00007ffce5695e60