[ 42.731173][ T23] audit: type=1800 audit(1575361358.023:26): pid=8071 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 42.774303][ T23] audit: type=1800 audit(1575361358.023:27): pid=8071 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 42.827243][ T23] audit: type=1800 audit(1575361358.023:28): pid=8071 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. [ 43.315725][ T23] audit: type=1800 audit(1575361358.633:29): pid=8071 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 '10.128.0.148' (ECDSA) to the list of known hosts. 2019/12/03 08:22:49 fuzzer started 2019/12/03 08:22:51 dialing manager at 10.128.0.26:38907 syzkaller login: [ 55.750889][ T8229] ld (8229) used greatest stack depth: 23416 bytes left 2019/12/03 08:22:51 syscalls: 2697 2019/12/03 08:22:51 code coverage: enabled 2019/12/03 08:22:51 comparison tracing: enabled 2019/12/03 08:22:51 extra coverage: extra coverage is not supported by the kernel 2019/12/03 08:22:51 setuid sandbox: enabled 2019/12/03 08:22:51 namespace sandbox: enabled 2019/12/03 08:22:51 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 08:22:51 fault injection: enabled 2019/12/03 08:22:51 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 08:22:51 net packet injection: enabled 2019/12/03 08:22:51 net device setup: enabled 2019/12/03 08:22:51 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 08:22:51 devlink PCI setup: PCI device 0000:00:10.0 is not available 08:22:52 executing program 0: mknod(&(0x7f00000000c0)='./bus\x00', 0x244, 0x0) socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) r1 = dup(r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) prctl$PR_SET_NO_NEW_PRIVS(0x26, 0x1) clone(0x7fd, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff) execve(&(0x7f0000000080)='./bus\x00', 0x0, 0x0) 08:22:52 executing program 1: r0 = socket(0x840000000002, 0x3, 0x6) getsockopt$inet_mreq(r0, 0x0, 0x12, 0x0, &(0x7f0000000080)) [ 57.061260][ T8234] IPVS: ftp: loaded support on port[0] = 21 08:22:52 executing program 2: r0 = socket$inet6(0xa, 0x803, 0x3) getsockopt$sock_cred(r0, 0x1, 0x11, &(0x7f0000000380)={0x0, 0x0}, &(0x7f00000003c0)=0xc) syz_mount_image$ntfs(&(0x7f0000000000)='ntfs\x00', &(0x7f0000000080)='./file0\x00', 0x0, 0x0, 0x0, 0x0, &(0x7f0000000740)={[], [{@uid_eq={'uid', 0x3d, r1}}]}) [ 57.183650][ T8234] chnl_net:caif_netlink_parms(): no params data found [ 57.184775][ T8236] IPVS: ftp: loaded support on port[0] = 21 [ 57.239764][ T8234] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.248857][ T8234] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.257858][ T8234] device bridge_slave_0 entered promiscuous mode [ 57.269397][ T8234] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.276837][ T8234] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.286411][ T8234] device bridge_slave_1 entered promiscuous mode [ 57.326135][ T8234] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.338819][ T8234] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.368451][ T8234] team0: Port device team_slave_0 added [ 57.376011][ T8234] team0: Port device team_slave_1 added [ 57.444566][ T8234] device hsr_slave_0 entered promiscuous mode 08:22:52 executing program 3: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000000)={0xffffffffffffffff, 0xffffffffffffffff}) io_setup(0x8, &(0x7f0000000100)=0x0) close(r0) syz_open_dev$admmidi(&(0x7f00000000c0)='/dev/admmidi#\x00', 0x7000000, 0x801) io_submit(r1, 0x1, &(0x7f0000000600)=[&(0x7f0000000180)={0x0, 0x0, 0x0, 0x5, 0x0, r0, 0x0}]) [ 57.493006][ T8234] device hsr_slave_1 entered promiscuous mode [ 57.631986][ T8239] IPVS: ftp: loaded support on port[0] = 21 08:22:53 executing program 4: socketpair$unix(0x1, 0x5, 0x0, &(0x7f00000000c0)={0xffffffffffffffff, 0xffffffffffffffff}) r1 = dup(r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) socketpair$unix(0x1, 0x1, 0x0, &(0x7f00000000c0)={0xffffffffffffffff, 0xffffffffffffffff}) fcntl$lock(r3, 0x7, &(0x7f0000000040)) fcntl$lock(r3, 0x26, &(0x7f0000000080)) dup3(r2, r3, 0x0) [ 57.693716][ T8236] chnl_net:caif_netlink_parms(): no params data found [ 57.703835][ T8234] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 57.728341][ T8234] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 57.768543][ T8234] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 57.820165][ T8242] IPVS: ftp: loaded support on port[0] = 21 [ 57.837832][ T8234] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 57.956681][ T8236] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.968886][ T8236] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.979354][ T8236] device bridge_slave_0 entered promiscuous mode [ 57.992095][ T8234] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.999283][ T8234] bridge0: port 2(bridge_slave_1) entered forwarding state 08:22:53 executing program 5: r0 = add_key$user(&(0x7f00000000c0)='user\x00', &(0x7f0000000440)={'syz'}, &(0x7f0000000380)='X', 0x1, 0xfffffffffffffffe) perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x41c1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_bp={0x0}}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) r1 = add_key$user(&(0x7f0000000200)='user\x00', &(0x7f0000000040)={'syz', 0x1}, &(0x7f0000000100)="01", 0x1, 0xfffffffffffffffd) r2 = add_key$user(&(0x7f00000000c0)='user\x00', &(0x7f0000000440)={'syz'}, &(0x7f0000000380)="585ccbe4ed83b836c1a6474914dc55e72206297b6895b66147b3c7218a9169a85ea0bdc9e1587a050000000000000042e33089754c8107c3cd3923dd4a71c2ff06007b6b4816122d2550829eaa9435c99926022b8753a188748c569f435fb3bae96efb74b50ec93c152f5e8e198a29e5c0d0c60000ce0637ce0000b4ec24c53d3d661ff5ff70e48884ca000018cea71fcfacf40d32e4b58a8d2725561f6110fd7b06f90b5274cc5c1e298a16324fe27da2a9d5ba9ff3c009d308bd73f4772539", 0xc0, 0xfffffffffffffffe) keyctl$dh_compute(0x17, &(0x7f0000000240)={r2, r0, r1}, 0x0, 0x0, &(0x7f0000000580)={&(0x7f0000000080)={'poly1305\x00'}}) [ 58.007235][ T8234] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.014365][ T8234] bridge0: port 1(bridge_slave_0) entered forwarding state [ 58.032186][ T8236] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.039703][ T8236] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.053356][ T8244] IPVS: ftp: loaded support on port[0] = 21 [ 58.073638][ T8236] device bridge_slave_1 entered promiscuous mode [ 58.116442][ T8236] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.171347][ T8236] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.189515][ T8247] IPVS: ftp: loaded support on port[0] = 21 [ 58.203926][ T8239] chnl_net:caif_netlink_parms(): no params data found [ 58.219367][ T5] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.231389][ T5] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.295608][ T8236] team0: Port device team_slave_0 added [ 58.333409][ T8242] chnl_net:caif_netlink_parms(): no params data found [ 58.343281][ T8236] team0: Port device team_slave_1 added [ 58.349116][ T8239] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.356757][ T8239] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.366167][ T8239] device bridge_slave_0 entered promiscuous mode [ 58.375386][ T8239] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.383029][ T8239] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.390672][ T8239] device bridge_slave_1 entered promiscuous mode [ 58.436890][ T8239] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.474263][ T8239] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.502894][ T8247] chnl_net:caif_netlink_parms(): no params data found [ 58.563457][ T8236] device hsr_slave_0 entered promiscuous mode [ 58.602427][ T8236] device hsr_slave_1 entered promiscuous mode [ 58.651813][ T8236] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.661211][ T8239] team0: Port device team_slave_0 added [ 58.680588][ T8242] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.688117][ T8242] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.695814][ T8242] device bridge_slave_0 entered promiscuous mode [ 58.707170][ T8239] team0: Port device team_slave_1 added [ 58.718730][ T8242] bridge0: port 2(bridge_slave_1) entered blocking state [ 58.726330][ T8242] bridge0: port 2(bridge_slave_1) entered disabled state [ 58.734969][ T8242] device bridge_slave_1 entered promiscuous mode [ 58.758452][ T8242] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 58.777602][ T8234] 8021q: adding VLAN 0 to HW filter on device bond0 [ 58.789172][ T8242] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 58.884031][ T8239] device hsr_slave_0 entered promiscuous mode [ 58.921978][ T8239] device hsr_slave_1 entered promiscuous mode [ 58.971784][ T8239] debugfs: Directory 'hsr0' with parent '/' already present! [ 58.979465][ T8247] bridge0: port 1(bridge_slave_0) entered blocking state [ 58.986731][ T8247] bridge0: port 1(bridge_slave_0) entered disabled state [ 58.994868][ T8247] device bridge_slave_0 entered promiscuous mode [ 59.028173][ T8236] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 59.085240][ T8242] team0: Port device team_slave_0 added [ 59.091110][ T8236] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 59.136736][ T8236] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 59.183544][ T8247] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.190630][ T8247] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.198822][ T8247] device bridge_slave_1 entered promiscuous mode [ 59.209628][ T8242] team0: Port device team_slave_1 added [ 59.222483][ T8236] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 59.274424][ T8244] chnl_net:caif_netlink_parms(): no params data found [ 59.299838][ T8251] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 59.308578][ T8251] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 59.323564][ T8234] 8021q: adding VLAN 0 to HW filter on device team0 [ 59.353516][ T8247] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.369436][ T8247] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 59.400611][ T8247] team0: Port device team_slave_0 added [ 59.408043][ T8244] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.415832][ T8244] bridge0: port 1(bridge_slave_0) entered disabled state [ 59.424131][ T8244] device bridge_slave_0 entered promiscuous mode [ 59.431864][ T8244] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.438904][ T8244] bridge0: port 2(bridge_slave_1) entered disabled state [ 59.446719][ T8244] device bridge_slave_1 entered promiscuous mode [ 59.455629][ T8251] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 59.464333][ T8251] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 59.472840][ T8251] bridge0: port 1(bridge_slave_0) entered blocking state [ 59.479884][ T8251] bridge0: port 1(bridge_slave_0) entered forwarding state [ 59.489561][ T8239] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 59.603491][ T8242] device hsr_slave_0 entered promiscuous mode [ 59.642007][ T8242] device hsr_slave_1 entered promiscuous mode [ 59.681880][ T8242] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.691053][ T8247] team0: Port device team_slave_1 added [ 59.754335][ T8247] device hsr_slave_0 entered promiscuous mode [ 59.801965][ T8247] device hsr_slave_1 entered promiscuous mode [ 59.831969][ T8247] debugfs: Directory 'hsr0' with parent '/' already present! [ 59.841743][ T8239] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 59.893886][ T8239] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 59.941236][ T8244] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 59.956191][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 59.964928][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 59.976936][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 59.984176][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.018065][ T8239] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 60.089498][ T8244] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 60.106180][ T8247] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 60.155636][ T8247] netdevsim netdevsim5 netdevsim1: renamed from eth1 [ 60.203864][ T8247] netdevsim netdevsim5 netdevsim2: renamed from eth2 [ 60.263719][ T8251] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 60.273225][ T8251] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 60.281866][ T8251] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 60.290661][ T8251] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 60.299132][ T8251] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 60.308444][ T8251] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 60.316890][ T8251] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 60.325255][ T8251] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 60.333945][ T8251] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 60.342515][ T8251] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 60.350953][ T8251] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 60.377945][ T8242] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 60.434157][ T8247] netdevsim netdevsim5 netdevsim3: renamed from eth3 [ 60.479253][ T8244] team0: Port device team_slave_0 added [ 60.493148][ T8242] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 60.533519][ T8242] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 60.575320][ T8242] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 60.635037][ T8244] team0: Port device team_slave_1 added [ 60.646438][ T8236] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.695348][ T8244] device hsr_slave_0 entered promiscuous mode [ 60.772097][ T8244] device hsr_slave_1 entered promiscuous mode [ 60.811865][ T8244] debugfs: Directory 'hsr0' with parent '/' already present! [ 60.830755][ T8236] 8021q: adding VLAN 0 to HW filter on device team0 [ 60.854401][ T8251] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 60.862601][ T8251] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.870293][ T8251] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 60.879193][ T8251] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 60.887990][ T8251] bridge0: port 1(bridge_slave_0) entered blocking state [ 60.895074][ T8251] bridge0: port 1(bridge_slave_0) entered forwarding state [ 60.903229][ T8251] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 60.910652][ T8251] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 60.918246][ T8251] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 60.946510][ T8234] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 60.964490][ T8245] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 60.974535][ T8245] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 60.983427][ T8245] bridge0: port 2(bridge_slave_1) entered blocking state [ 60.990512][ T8245] bridge0: port 2(bridge_slave_1) entered forwarding state [ 60.999576][ T8244] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 61.054957][ T8244] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 61.104773][ T8244] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 61.153255][ T8244] netdevsim netdevsim4 netdevsim3: renamed from eth3 [ 61.230500][ T2772] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 61.242474][ T2772] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 61.275276][ T8242] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.293563][ T8247] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.301270][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 61.310741][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 61.319690][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 61.328365][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 61.336963][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 61.345371][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 61.353688][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 61.362250][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 61.370458][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 61.417568][ T8242] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.441203][ T8239] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.473484][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 61.487801][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 166.491555][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 166.498330][ C1] rcu: 1-...!: (1 GPs behind) idle=d82/1/0x4000000000000002 softirq=10856/10857 fqs=0 [ 166.508197][ C1] (t=10500 jiffies g=6405 q=193) [ 166.513217][ C1] rcu: rcu_preempt kthread starved for 10500 jiffies! g6405 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0 [ 166.524487][ C1] rcu: RCU grace-period kthread stack dump: [ 166.530370][ C1] rcu_preempt I29032 10 2 0x80004000 [ 166.536706][ C1] Call Trace: [ 166.540005][ C1] __schedule+0x9a0/0xcc0 [ 166.544780][ C1] schedule+0x181/0x210 [ 166.548934][ C1] schedule_timeout+0x14f/0x240 [ 166.553795][ C1] ? run_local_timers+0x120/0x120 [ 166.558824][ C1] rcu_gp_kthread+0xed8/0x1770 [ 166.563589][ C1] kthread+0x332/0x350 [ 166.567646][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 166.572765][ C1] ? kthread_blkcg+0xe0/0xe0 [ 166.577438][ C1] ret_from_fork+0x24/0x30 [ 166.581971][ C1] NMI backtrace for cpu 1 [ 166.586293][ C1] CPU: 1 PID: 8257 Comm: syz-executor.0 Not tainted 5.4.0-syzkaller #0 [ 166.594603][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 166.604649][ C1] Call Trace: [ 166.607927][ C1] [ 166.610775][ C1] dump_stack+0x1fb/0x318 [ 166.615187][ C1] nmi_cpu_backtrace+0xaf/0x1a0 [ 166.620028][ C1] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 166.626175][ C1] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 166.632235][ C1] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 166.638236][ C1] arch_trigger_cpumask_backtrace+0x10/0x20 [ 166.644126][ C1] rcu_dump_cpu_stacks+0x15a/0x220 [ 166.649237][ C1] rcu_sched_clock_irq+0xe25/0x1ad0 [ 166.654437][ C1] ? trace_hardirqs_off+0x74/0x80 [ 166.659649][ C1] update_process_times+0x12d/0x180 [ 166.664842][ C1] tick_sched_timer+0x263/0x420 [ 166.669698][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 166.675237][ C1] __hrtimer_run_queues+0x403/0x840 [ 166.680446][ C1] hrtimer_interrupt+0x38c/0xda0 [ 166.685399][ C1] ? debug_smp_processor_id+0x9/0x20 [ 166.690681][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 166.696222][ C1] apic_timer_interrupt+0xf/0x20 [ 166.701145][ C1] [ 166.704100][ C1] RIP: 0010:free_thread_stack+0x151/0x590 [ 166.709815][ C1] Code: 31 f6 e8 42 af 6e 00 43 80 3c 2e 00 74 08 4c 89 e7 e8 43 a4 69 00 49 8b 1c 24 48 83 c3 08 48 89 d8 48 c1 e8 03 42 80 3c 28 00 <74> 08 48 89 df e8 25 a4 69 00 48 8b 3b be fc ff ff ff e8 28 04 00 [ 166.729495][ C1] RSP: 0018:ffffc90002267e40 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 166.737899][ C1] RAX: 1ffff11013f6b061 RBX: ffff88809fb58308 RCX: 0000000000000000 [ 166.745864][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea00027b4280 [ 166.753921][ C1] RBP: ffffc90002267e78 R08: 000000000003a768 R09: ffffed10132a2eb7 [ 166.761967][ C1] R10: ffffed10132a2eb7 R11: 0000000000000000 R12: ffff88809fb583a0 [ 166.769928][ C1] R13: dffffc0000000000 R14: 1ffff11013f6b074 R15: ffff8880995175a8 [ 166.777925][ C1] put_task_stack+0xa3/0x130 [ 166.782681][ C1] finish_task_switch+0x3f1/0x550 [ 166.787703][ C1] schedule_tail+0x20/0x1a0 [ 166.792248][ C1] ret_from_fork+0x8/0x30 [ 166.796570][ C1] RIP: 0033:0x45d049 [ 166.800454][ C1] Code: ff 48 85 f6 0f 84 d7 8c fb ff 48 83 ee 10 48 89 4e 08 48 89 3e 48 89 d7 4c 89 c2 4d 89 c8 4c 8b 54 24 08 b8 38 00 00 00 0f 05 <48> 85 c0 0f 8c ae 8c fb ff 74 01 c3 31 ed 48 f7 c7 00 00 01 00 75 [ 166.820138][ C1] RSP: 002b:00007fd328a90db0 EFLAGS: 00000202 ORIG_RAX: 0000000000000038 [ 166.828537][ C1] RAX: 0000000000000000 RBX: 00007fd328a91700 RCX: 000000000045d049 [ 166.836582][ C1] RDX: 00007fd328a919d0 RSI: 00007fd328a90db0 RDI: 00000000003d0f00 [ 166.844555][ C1] RBP: 00007ffe0aade4b0 R08: 00007fd328a91700 R09: 00007fd328a91700 [ 166.852524][ C1] R10: 00007fd328a919d0 R11: 0000000000000202 R12: 0000000000000000 [ 166.860486][ C1] R13: 00007ffe0aade34f R14: 00007fd328a919c0 R15: 000000000075bf2c