[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 28.333018] kauditd_printk_skb: 8 callbacks suppressed [ 28.333030] audit: type=1800 audit(1544436195.171:29): pid=5877 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 28.359284] audit: type=1800 audit(1544436195.171:30): pid=5877 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.138' (ECDSA) to the list of known hosts. 2018/12/10 10:03:25 parsed 1 programs 2018/12/10 10:03:27 executed programs: 0 syzkaller login: [ 40.632137] IPVS: ftp: loaded support on port[0] = 21 [ 40.640271] IPVS: ftp: loaded support on port[0] = 21 [ 40.653418] IPVS: ftp: loaded support on port[0] = 21 [ 40.654187] IPVS: ftp: loaded support on port[0] = 21 [ 40.663914] IPVS: ftp: loaded support on port[0] = 21 [ 40.680507] IPVS: ftp: loaded support on port[0] = 21 [ 41.561491] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.573002] bridge0: port 1(bridge_slave_0) entered disabled state [ 41.581591] device bridge_slave_0 entered promiscuous mode [ 41.620027] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.633633] bridge0: port 2(bridge_slave_1) entered disabled state [ 41.643174] device bridge_slave_1 entered promiscuous mode [ 41.663007] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.671815] bridge0: port 1(bridge_slave_0) entered disabled state [ 41.679757] device bridge_slave_0 entered promiscuous mode [ 41.693389] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 41.708283] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.716938] bridge0: port 1(bridge_slave_0) entered disabled state [ 41.723856] device bridge_slave_0 entered promiscuous mode [ 41.732571] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.741133] bridge0: port 1(bridge_slave_0) entered disabled state [ 41.751755] device bridge_slave_0 entered promiscuous mode [ 41.760203] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.766930] bridge0: port 1(bridge_slave_0) entered disabled state [ 41.773876] device bridge_slave_0 entered promiscuous mode [ 41.780883] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.787359] bridge0: port 2(bridge_slave_1) entered disabled state [ 41.794301] device bridge_slave_1 entered promiscuous mode [ 41.802044] bridge0: port 1(bridge_slave_0) entered blocking state [ 41.808532] bridge0: port 1(bridge_slave_0) entered disabled state [ 41.815515] device bridge_slave_0 entered promiscuous mode [ 41.823744] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 41.833420] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.842514] bridge0: port 2(bridge_slave_1) entered disabled state [ 41.850039] device bridge_slave_1 entered promiscuous mode [ 41.859465] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 41.868883] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.877110] bridge0: port 2(bridge_slave_1) entered disabled state [ 41.885008] device bridge_slave_1 entered promiscuous mode [ 41.891325] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.899461] bridge0: port 2(bridge_slave_1) entered disabled state [ 41.906585] device bridge_slave_1 entered promiscuous mode [ 41.914513] bridge0: port 2(bridge_slave_1) entered blocking state [ 41.921005] bridge0: port 2(bridge_slave_1) entered disabled state [ 41.927949] device bridge_slave_1 entered promiscuous mode [ 41.940584] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 41.948848] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 41.959051] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 41.976077] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 41.983967] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 42.004547] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 42.021086] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 42.033659] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 42.044411] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 42.052626] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 42.096252] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 42.251065] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 42.264783] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 42.291312] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 42.316245] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 42.330661] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 42.353023] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 42.377043] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 42.394420] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 42.410767] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 42.431609] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 42.442298] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 42.464152] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 42.476680] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 42.486307] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 42.493152] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 42.501532] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 42.516104] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 42.525897] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 42.538525] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 42.548589] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 42.561149] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 42.570844] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 42.588499] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 42.600812] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 42.608488] team0: Port device team_slave_0 added [ 42.616573] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 42.634435] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 42.647292] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 42.675560] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 42.684180] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 42.701141] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 42.709175] team0: Port device team_slave_1 added [ 42.743413] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 42.755798] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 42.793586] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 42.810626] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 42.820558] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 42.840538] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 42.849247] team0: Port device team_slave_0 added [ 42.873160] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 42.882973] team0: Port device team_slave_0 added [ 42.897831] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 42.915234] team0: Port device team_slave_0 added [ 42.948778] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 42.957985] team0: Port device team_slave_1 added [ 42.964812] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 42.975195] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 42.982619] team0: Port device team_slave_0 added [ 42.990061] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 42.999162] team0: Port device team_slave_1 added [ 43.007731] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 43.021723] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 43.036376] team0: Port device team_slave_0 added [ 43.041661] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 43.052711] team0: Port device team_slave_1 added [ 43.062359] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 43.071011] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 43.090999] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 43.100533] team0: Port device team_slave_1 added [ 43.114279] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 43.122610] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 43.130407] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 43.145360] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 43.172354] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 43.185880] team0: Port device team_slave_1 added [ 43.192483] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 43.211456] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 43.233397] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 43.241220] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 43.265392] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 43.273175] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 43.292293] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 43.310552] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 43.320156] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 43.335514] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 43.343196] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 43.353720] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 43.370909] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 43.385544] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 43.393464] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 43.404472] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 43.414143] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 43.430904] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 43.449696] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 43.456942] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 43.468712] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 43.477465] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 43.486321] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 43.494239] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 43.502216] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 43.515377] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 43.523165] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 43.531566] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 43.541160] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 43.560719] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 43.574463] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 43.590880] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 43.599394] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 43.607662] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 43.623807] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 43.644956] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 43.652979] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 43.666817] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 43.685551] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 44.102544] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.109117] bridge0: port 2(bridge_slave_1) entered forwarding state [ 44.116185] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.122560] bridge0: port 1(bridge_slave_0) entered forwarding state [ 44.143782] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 44.345631] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.352057] bridge0: port 2(bridge_slave_1) entered forwarding state [ 44.358783] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.365208] bridge0: port 1(bridge_slave_0) entered forwarding state [ 44.375249] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 44.389708] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.396110] bridge0: port 2(bridge_slave_1) entered forwarding state [ 44.402769] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.409195] bridge0: port 1(bridge_slave_0) entered forwarding state [ 44.428607] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 44.437711] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.444072] bridge0: port 2(bridge_slave_1) entered forwarding state [ 44.450814] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.457237] bridge0: port 1(bridge_slave_0) entered forwarding state [ 44.466661] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 44.474451] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 44.482207] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 44.490044] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 44.497274] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 44.507332] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.513698] bridge0: port 2(bridge_slave_1) entered forwarding state [ 44.520386] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.526786] bridge0: port 1(bridge_slave_0) entered forwarding state [ 44.534061] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 44.543461] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.549876] bridge0: port 2(bridge_slave_1) entered forwarding state [ 44.556564] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.562931] bridge0: port 1(bridge_slave_0) entered forwarding state [ 44.572505] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 45.505499] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 45.515403] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 47.090263] 8021q: adding VLAN 0 to HW filter on device bond0 [ 47.207132] 8021q: adding VLAN 0 to HW filter on device bond0 [ 47.279175] 8021q: adding VLAN 0 to HW filter on device bond0 [ 47.339839] 8021q: adding VLAN 0 to HW filter on device bond0 [ 47.354143] 8021q: adding VLAN 0 to HW filter on device bond0 [ 47.376479] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 47.404863] 8021q: adding VLAN 0 to HW filter on device bond0 [ 47.478724] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 47.528271] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 47.605880] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 47.613517] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 47.620662] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 47.631161] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 47.653582] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 47.678576] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 47.782913] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 47.790172] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 47.797749] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 47.815306] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 47.823262] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 47.832774] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 47.908961] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 47.921453] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 47.933241] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 47.942608] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 47.957399] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 47.966034] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 47.977586] 8021q: adding VLAN 0 to HW filter on device team0 [ 47.996774] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 48.009411] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 48.029707] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 48.105094] 8021q: adding VLAN 0 to HW filter on device team0 [ 48.118909] 8021q: adding VLAN 0 to HW filter on device team0 [ 48.238260] 8021q: adding VLAN 0 to HW filter on device team0 [ 48.251016] 8021q: adding VLAN 0 to HW filter on device team0 [ 48.275587] 8021q: adding VLAN 0 to HW filter on device team0 2018/12/10 10:03:37 executed programs: 6 2018/12/10 10:03:43 executed programs: 42 2018/12/10 10:03:48 executed programs: 78 2018/12/10 10:03:54 executed programs: 114 2018/12/10 10:03:59 executed programs: 150 2018/12/10 10:04:05 executed programs: 186 2018/12/10 10:04:10 executed programs: 222 [ 88.535068] [ 88.536848] ===================================================== [ 88.543059] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 88.549793] 4.20.0-rc5+ #369 Not tainted [ 88.553832] ----------------------------------------------------- [ 88.560043] syz-executor5/8868 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire: [ 88.567209] 0000000080a24fb2 (&ctx->fd_wqh){....}, at: aio_poll+0x760/0x1420 [ 88.574523] [ 88.574523] and this task is already holding: [ 88.580477] 000000004bf1add8 (&(&ctx->ctx_lock)->rlock){..-.}, at: aio_poll+0x738/0x1420 [ 88.588700] which would create a new lock dependency: [ 88.593869] (&(&ctx->ctx_lock)->rlock){..-.} -> (&ctx->fd_wqh){....} [ 88.600431] [ 88.600431] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 88.608466] (&(&ctx->ctx_lock)->rlock){..-.} [ 88.608471] [ 88.608471] ... which became SOFTIRQ-irq-safe at: [ 88.619250] lock_acquire+0x1ed/0x520 [ 88.623123] _raw_spin_lock_irq+0x61/0x80 [ 88.627344] free_ioctx_users+0xbc/0x710 [ 88.631477] percpu_ref_switch_to_atomic_rcu+0x563/0x730 [ 88.636995] rcu_process_callbacks+0x100a/0x1ac0 [ 88.641820] __do_softirq+0x308/0xb7e [ 88.645696] irq_exit+0x17f/0x1c0 [ 88.649219] smp_apic_timer_interrupt+0x1cb/0x760 [ 88.654134] apic_timer_interrupt+0xf/0x20 [ 88.658435] lock_acquire+0x23/0x520 [ 88.662214] down_read_trylock+0xda/0x140 [ 88.666429] __do_page_fault+0x3da/0xe60 [ 88.670558] do_page_fault+0xf2/0x7e0 [ 88.674441] page_fault+0x1e/0x30 [ 88.677954] [ 88.677954] to a SOFTIRQ-irq-unsafe lock: [ 88.683553] (&ctx->fault_pending_wqh){+.+.} [ 88.683560] [ 88.683560] ... which became SOFTIRQ-irq-unsafe at: [ 88.694510] ... [ 88.694524] lock_acquire+0x1ed/0x520 [ 88.700283] _raw_spin_lock+0x2d/0x40 [ 88.704153] userfaultfd_release+0x63e/0x8d0 [ 88.708652] __fput+0x385/0xa30 [ 88.712021] ____fput+0x15/0x20 [ 88.715378] task_work_run+0x1e8/0x2a0 [ 88.719347] get_signal+0x1558/0x1980 [ 88.723227] do_signal+0x9c/0x21c0 [ 88.726836] exit_to_usermode_loop+0x2e5/0x380 [ 88.731486] do_syscall_64+0x6be/0x820 [ 88.735441] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 88.740695] [ 88.740695] other info that might help us debug this: [ 88.740695] [ 88.748813] Chain exists of: [ 88.748813] &(&ctx->ctx_lock)->rlock --> &ctx->fd_wqh --> &ctx->fault_pending_wqh [ 88.748813] [ 88.760935] Possible interrupt unsafe locking scenario: [ 88.760935] [ 88.767838] CPU0 CPU1 [ 88.772479] ---- ---- [ 88.777118] lock(&ctx->fault_pending_wqh); [ 88.781545] local_irq_disable(); [ 88.787575] lock(&(&ctx->ctx_lock)->rlock); [ 88.794689] lock(&ctx->fd_wqh); [ 88.800659] [ 88.803403] lock(&(&ctx->ctx_lock)->rlock); [ 88.808047] [ 88.808047] *** DEADLOCK *** [ 88.808047] [ 88.814089] 1 lock held by syz-executor5/8868: [ 88.818642] #0: 000000004bf1add8 (&(&ctx->ctx_lock)->rlock){..-.}, at: aio_poll+0x738/0x1420 [ 88.827422] [ 88.827422] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 88.836419] -> (&(&ctx->ctx_lock)->rlock){..-.} { [ 88.841242] IN-SOFTIRQ-W at: [ 88.844510] lock_acquire+0x1ed/0x520 [ 88.849941] _raw_spin_lock_irq+0x61/0x80 [ 88.855719] free_ioctx_users+0xbc/0x710 [ 88.861413] percpu_ref_switch_to_atomic_rcu+0x563/0x730 [ 88.868498] rcu_process_callbacks+0x100a/0x1ac0 [ 88.874894] __do_softirq+0x308/0xb7e [ 88.880345] irq_exit+0x17f/0x1c0 [ 88.885709] smp_apic_timer_interrupt+0x1cb/0x760 [ 88.892320] apic_timer_interrupt+0xf/0x20 [ 88.898219] lock_acquire+0x23/0x520 [ 88.903565] down_read_trylock+0xda/0x140 [ 88.909345] __do_page_fault+0x3da/0xe60 [ 88.915032] do_page_fault+0xf2/0x7e0 [ 88.920467] page_fault+0x1e/0x30 [ 88.925548] INITIAL USE at: [ 88.928728] lock_acquire+0x1ed/0x520 [ 88.934073] _raw_spin_lock_irq+0x61/0x80 [ 88.939765] free_ioctx_users+0xbc/0x710 [ 88.945377] percpu_ref_switch_to_atomic_rcu+0x563/0x730 [ 88.952375] rcu_process_callbacks+0x100a/0x1ac0 [ 88.958675] __do_softirq+0x308/0xb7e [ 88.964032] irq_exit+0x17f/0x1c0 [ 88.969034] smp_apic_timer_interrupt+0x1cb/0x760 [ 88.975418] apic_timer_interrupt+0xf/0x20 [ 88.981201] lock_acquire+0x23/0x520 [ 88.986610] down_read_trylock+0xda/0x140 [ 88.992305] __do_page_fault+0x3da/0xe60 [ 88.997916] do_page_fault+0xf2/0x7e0 [ 89.003263] page_fault+0x1e/0x30 [ 89.008255] } [ 89.010040] ... key at: [] __key.51053+0x0/0x40 [ 89.016769] ... acquired at: [ 89.019889] lock_acquire+0x1ed/0x520 [ 89.023901] _raw_spin_lock+0x2d/0x40 [ 89.027870] aio_poll+0x760/0x1420 [ 89.031564] io_submit_one+0xa49/0xf80 [ 89.035619] __x64_sys_io_submit+0x1b7/0x580 [ 89.040181] do_syscall_64+0x1b9/0x820 [ 89.044223] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 89.049562] [ 89.051166] [ 89.051166] the dependencies between the lock to be acquired [ 89.051169] and SOFTIRQ-irq-unsafe lock: [ 89.062740] -> (&ctx->fault_pending_wqh){+.+.} { [ 89.067595] HARDIRQ-ON-W at: [ 89.070957] lock_acquire+0x1ed/0x520 [ 89.076698] _raw_spin_lock+0x2d/0x40 [ 89.082415] userfaultfd_release+0x63e/0x8d0 [ 89.088630] __fput+0x385/0xa30 [ 89.093728] ____fput+0x15/0x20 [ 89.098811] task_work_run+0x1e8/0x2a0 [ 89.104748] get_signal+0x1558/0x1980 [ 89.110354] do_signal+0x9c/0x21c0 [ 89.115703] exit_to_usermode_loop+0x2e5/0x380 [ 89.122098] do_syscall_64+0x6be/0x820 [ 89.127790] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 89.134782] SOFTIRQ-ON-W at: [ 89.138139] lock_acquire+0x1ed/0x520 [ 89.143745] _raw_spin_lock+0x2d/0x40 [ 89.149348] userfaultfd_release+0x63e/0x8d0 [ 89.155562] __fput+0x385/0xa30 [ 89.160670] ____fput+0x15/0x20 [ 89.165768] task_work_run+0x1e8/0x2a0 [ 89.171457] get_signal+0x1558/0x1980 [ 89.177070] do_signal+0x9c/0x21c0 [ 89.182421] exit_to_usermode_loop+0x2e5/0x380 [ 89.188816] do_syscall_64+0x6be/0x820 [ 89.194508] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 89.201511] INITIAL USE at: [ 89.204810] lock_acquire+0x1ed/0x520 [ 89.210338] _raw_spin_lock+0x2d/0x40 [ 89.215983] userfaultfd_ctx_read+0x4f3/0x2180 [ 89.222285] userfaultfd_read+0x1e2/0x2c0 [ 89.228148] do_iter_read+0x4a3/0x650 [ 89.233674] vfs_readv+0x175/0x1c0 [ 89.238943] do_readv+0x11a/0x310 [ 89.244113] __x64_sys_readv+0x75/0xb0 [ 89.249734] do_syscall_64+0x1b9/0x820 [ 89.255358] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 89.262258] } [ 89.264136] ... key at: [] __key.44661+0x0/0x40 [ 89.271097] ... acquired at: [ 89.274285] _raw_spin_lock+0x2d/0x40 [ 89.278260] userfaultfd_ctx_read+0x4f3/0x2180 [ 89.282994] userfaultfd_read+0x1e2/0x2c0 [ 89.287398] do_iter_read+0x4a3/0x650 [ 89.291385] vfs_readv+0x175/0x1c0 [ 89.295083] do_readv+0x11a/0x310 [ 89.298697] __x64_sys_readv+0x75/0xb0 [ 89.302739] do_syscall_64+0x1b9/0x820 [ 89.306894] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 89.312372] [ 89.313991] -> (&ctx->fd_wqh){....} { [ 89.317790] INITIAL USE at: [ 89.320970] lock_acquire+0x1ed/0x520 [ 89.326389] _raw_spin_lock_irq+0x61/0x80 [ 89.332088] userfaultfd_ctx_read+0x2e4/0x2180 [ 89.338212] userfaultfd_read+0x1e2/0x2c0 [ 89.343914] do_iter_read+0x4a3/0x650 [ 89.349265] vfs_readv+0x175/0x1c0 [ 89.354367] do_readv+0x11a/0x310 [ 89.359376] __x64_sys_readv+0x75/0xb0 [ 89.364809] do_syscall_64+0x1b9/0x820 [ 89.370249] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 89.376981] } [ 89.378771] ... key at: [] __key.44664+0x0/0x40 [ 89.385504] ... acquired at: [ 89.388607] lock_acquire+0x1ed/0x520 [ 89.392571] _raw_spin_lock+0x2d/0x40 [ 89.396578] aio_poll+0x760/0x1420 [ 89.400357] io_submit_one+0xa49/0xf80 [ 89.404417] __x64_sys_io_submit+0x1b7/0x580 [ 89.408985] do_syscall_64+0x1b9/0x820 [ 89.413039] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 89.418391] [ 89.419996] [ 89.419996] stack backtrace: [ 89.424609] CPU: 0 PID: 8868 Comm: syz-executor5 Not tainted 4.20.0-rc5+ #369 [ 89.431861] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 89.441266] Call Trace: [ 89.443853] dump_stack+0x244/0x39d [ 89.447484] ? dump_stack_print_info.cold.1+0x20/0x20 [ 89.452687] ? print_shortest_lock_dependencies.cold.55+0x18e/0x211 [ 89.459076] ? vprintk_func+0x85/0x181 [ 89.462985] check_usage.cold.58+0x6d5/0xad1 [ 89.467500] ? check_usage_forwards+0x3d0/0x3d0 [ 89.472165] ? __lock_acquire+0x62f/0x4c20 [ 89.476384] ? __switch_to_asm+0x34/0x70 [ 89.480502] ? lockdep_on+0x50/0x50 [ 89.484121] ? mark_held_locks+0x130/0x130 [ 89.488340] ? __lock_acquire+0x62f/0x4c20 [ 89.492701] ? trace_event_raw_event_lock_acquire+0x440/0x440 [ 89.498573] __lock_acquire+0x238a/0x4c20 [ 89.502924] ? __lock_acquire+0x238a/0x4c20 [ 89.507237] ? mark_held_locks+0x130/0x130 [ 89.511456] ? zap_class+0x640/0x640 [ 89.515347] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 89.520438] ? find_held_lock+0x36/0x1c0 [ 89.524485] ? add_wait_queue+0x1b9/0x2b0 [ 89.528637] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 89.533731] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 89.538831] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 89.543403] ? trace_hardirqs_on+0xbd/0x310 [ 89.547709] ? kasan_check_read+0x11/0x20 [ 89.551844] ? trace_hardirqs_off_caller+0x310/0x310 [ 89.556939] ? rcu_softirq_qs+0x20/0x20 [ 89.560901] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 89.565992] ? add_wait_queue+0x1b9/0x2b0 [ 89.570149] ? __wake_up_locked_key_bookmark+0x20/0x20 [ 89.575448] lock_acquire+0x1ed/0x520 [ 89.579239] ? aio_poll+0x760/0x1420 [ 89.582978] ? lock_release+0xa00/0xa00 [ 89.586948] ? kasan_check_read+0x11/0x20 [ 89.591078] ? do_raw_spin_lock+0x14f/0x350 [ 89.595401] ? __ia32_sys_eventfd+0x40/0x40 [ 89.599765] ? rwlock_bug.part.2+0x90/0x90 [ 89.603994] ? trace_hardirqs_on+0x310/0x310 [ 89.608392] ? __save_stack_trace+0x8d/0xf0 [ 89.612706] _raw_spin_lock+0x2d/0x40 [ 89.616499] ? aio_poll+0x760/0x1420 [ 89.620199] aio_poll+0x760/0x1420 [ 89.623797] ? free_ioctx_users+0x710/0x710 [ 89.628107] ? kmem_cache_alloc+0x12e/0x730 [ 89.632454] ? aio_setup_rw+0x170/0x170 [ 89.636464] ? zap_class+0x640/0x640 [ 89.640171] ? zap_class+0x640/0x640 [ 89.643870] ? find_held_lock+0x36/0x1c0 [ 89.647914] ? find_held_lock+0x36/0x1c0 [ 89.651959] ? __might_fault+0x12b/0x1e0 [ 89.656001] ? lock_downgrade+0x900/0x900 [ 89.660139] ? lock_release+0xa00/0xa00 [ 89.664147] ? perf_trace_sched_process_exec+0x860/0x860 [ 89.669585] ? kasan_check_read+0x11/0x20 [ 89.673723] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 89.678988] io_submit_one+0xa49/0xf80 [ 89.682857] ? io_submit_one+0xa49/0xf80 [ 89.686908] ? aio_poll+0x1420/0x1420 [ 89.690706] ? __might_fault+0x12b/0x1e0 [ 89.694757] ? lock_downgrade+0x900/0x900 [ 89.698898] ? perf_trace_sched_process_exec+0x860/0x860 [ 89.704348] __x64_sys_io_submit+0x1b7/0x580 [ 89.708744] ? __ia32_sys_io_destroy+0x580/0x580 [ 89.713486] ? trace_hardirqs_on+0xbd/0x310 [ 89.717791] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 89.723318] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 89.728669] ? trace_hardirqs_off_caller+0x310/0x310 [ 89.733769] do_syscall_64+0x1b9/0x820 [ 89.737642] ? __ia32_sys_io_destroy+0x580/0x580 [ 89.742385] ? do_syscall_64+0x1b9/0x820 [ 89.746438] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 89.751798] ? syscall_return_slowpath+0x5e0/0x5e0 [ 89.756718] ? trace_hardirqs_on_caller+0x310/0x310 [ 89.761723] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 89.766731] ? post_copy_siginfo_from_user.isra.25.part.26+0x250/0x250 [ 89.773381] ? __switch_to_asm+0x40/0x70 [ 89.777421] ? __switch_to_asm+0x34/0x70 [ 89.781485] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 89.786451] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 89.791622] RIP: 0033:0x457659 [ 89.794798] Code: fd b3 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 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 89.813795] RSP: 002b:00007f1933919c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 [ 89.821499] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457659 [ 89.828804] RDX: 0000000020000b00 RSI: 0000000000000001 RDI: 00007f193393c000 2018/12/10 10:04:16 executed programs: 252 [ 89.836077] RBP: 000000000072c040 R08: 0000000000000000 R09: 0000000000000000 [ 89.843360] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f193391a6d4 [ 89.850614] R13: 00000000004be9a4 R14: 00000000004cf588 R15: 00000000ffffffff [ 89.897636] kobject: 'loop0' (0000000056a34720): kobject_uevent_env [ 89.904323] kobject: 'loop0' (0000000056a34720): fill_kobj_path: path = '/devices/virtual/block/loop0' [ 89.927034] kobject: 'loop4' (00000000958192da): kobject_uevent_env [ 89.933523] kobject: 'loop4' (00000000958192da): fill_kobj_path: path = '/devices/virtual/block/loop4' [ 89.946484] kobject: 'loop2' (00000000ec3ab255): kobject_uevent_env [ 89.954457] kobject: 'loop2' (00000000ec3ab255): fill_kobj_path: path = '/devices/virtual/block/loop2' [ 89.967105] kobject: 'loop5' (00000000c7341185): kobject_uevent_env [ 89.973723] kobject: 'loop5' (00000000c7341185): fill_kobj_path: path = '/devices/virtual/block/loop5' [ 89.983487] kobject: 'loop3' (00000000245fc40e): kobject_uevent_env [ 89.990012] kobject: 'loop3' (00000000245fc40e): fill_kobj_path: path = '/devices/virtual/block/loop3' [ 90.000482] kobject: 'loop1' (000000007c986016): kobject_uevent_env [ 90.006970] kobject: 'loop1' (000000007c986016): fill_kobj_path: path = '/devices/virtual/block/loop1' [ 90.847740] kobject: 'loop0' (0000000056a34720): kobject_uevent_env [ 90.854249] kobject: 'loop0' (0000000056a34720): fill_kobj_path: path = '/devices/virtual/block/loop0' [ 90.868130] kobject: 'loop4' (00000000958192da): kobject_uevent_env [ 90.876449] kobject: 'loop4' (00000000958192da): fill_kobj_path: path = '/devices/virtual/block/loop4' [ 90.899913] kobject: 'loop5' (00000000c7341185): kobject_uevent_env [ 90.912910] kobject: 'loop5' (00000000c7341185): fill_kobj_path: path = '/devices/virtual/block/loop5' [ 90.922945] kobject: 'loop1' (000000007c986016): kobject_uevent_env [ 90.929862] kobject: 'loop1' (000000007c986016): fill_kobj_path: path = '/devices/virtual/block/loop1' [ 90.939711] kobject: 'loop2' (00000000ec3ab255): kobject_uevent_env [ 90.946226] kobject: 'loop2' (00000000ec3ab255): fill_kobj_path: path = '/devices/virtual/block/loop2' [ 90.956103] kobject: 'loop3' (00000000245fc40e): kobject_uevent_env [ 90.962544] kobject: 'loop3' (00000000245fc40e): fill_kobj_path: path = '/devices/virtual/block/loop3' [ 91.798719] kobject: 'loop0' (0000000056a34720): kobject_uevent_env [ 91.806973] kobject: 'loop0' (0000000056a34720): fill_kobj_path: path = '/devices/virtual/block/loop0' [ 91.818583] kobject: 'loop3' (00000000245fc40e): kobject_uevent_env [ 91.830154] kobject: 'loop3' (00000000245fc40e): fill_kobj_path: path = '/devices/virtual/block/loop3' [ 91.845103] kobject: 'loop4' (00000000958192da): kobject_uevent_env [ 91.851574] kobject: 'loop4' (00000000958192da): fill_kobj_path: path = '/devices/virtual/block/loop4' [ 91.862342] kobject: 'loop1' (000000007c986016): kobject_uevent_env [ 91.868841] kobject: 'loop1' (000000007c986016): fill_kobj_path: path = '/devices/virtual/block/loop1' [ 91.878909] kobject: 'loop2' (00000000ec3ab255): kobject_uevent_env [ 91.885390] kobject: 'loop2' (00000000ec3ab255): fill_kobj_path: path = '/devices/virtual/block/loop2' [ 91.895246] kobject: 'loop5' (00000000c7341185): kobject_uevent_env [ 91.901707] kobject: 'loop5' (00000000c7341185): fill_kobj_path: path = '/devices/virtual/block/loop5' [ 92.728505] kobject: 'loop3' (00000000245fc40e): kobject_uevent_env [ 92.735954] kobject: 'loop3' (00000000245fc40e): fill_kobj_path: path = '/devices/virtual/block/loop3' [ 92.753185] kobject: 'loop0' (0000000056a34720): kobject_uevent_env [ 92.760230] kobject: 'loop0' (0000000056a34720): fill_kobj_path: path = '/devices/virtual/block/loop0' [ 92.770102] kobject: 'loop4' (00000000958192da): kobject_uevent_env [ 92.779268] kobject: 'loop4' (00000000958192da): fill_kobj_path: path = '/devices/virtual/block/loop4' [ 92.791180] kobject: 'loop2' (00000000ec3ab255): kobject_uevent_env [ 92.798088] kobject: 'loop2' (00000000ec3ab255): fill_kobj_path: path = '/devices/virtual/block/loop2' [ 92.808667] kobject: 'loop5' (00000000c7341185): kobject_uevent_env [ 92.815293] kobject: 'loop5' (00000000c7341185): fill_kobj_path: path = '/devices/virtual/block/loop5' [ 92.825179] kobject: 'loop1' (000000007c986016): kobject_uevent_env [ 92.831665] kobject: 'loop1' (000000007c986016): fill_kobj_path: path = '/devices/virtual/block/loop1' [ 93.657466] kobject: 'loop3' (00000000245fc40e): kobject_uevent_env [ 93.664045] kobject: 'loop3' (00000000245fc40e): fill_kobj_path: path = '/devices/virtual/block/loop3' [ 93.683694] kobject: 'loop4' (00000000958192da): kobject_uevent_env [ 93.690312] kobject: 'loop4' (00000000958192da): fill_kobj_path: path = '/devices/virtual/block/loop4' [ 93.700172] kobject: 'loop0' (0000000056a34720): kobject_uevent_env [ 93.708415] kobject: 'loop0' (0000000056a34720): fill_kobj_path: path = '/devices/virtual/block/loop0' [ 93.720611] kobject: 'loop5' (00000000c7341185): kobject_uevent_env [ 93.727455] kobject: 'loop5' (00000000c7341185): fill_kobj_path: path = '/devices/virtual/block/loop5' [ 93.740330] kobject: 'loop2' (00000000ec3ab255): kobject_uevent_env [ 93.746932] kobject: 'loop2' (00000000ec3ab255): fill_kobj_path: path = '/devices/virtual/block/loop2' [ 93.757317] kobject: 'loop1' (000000007c986016): kobject_uevent_env [ 93.763758] kobject: 'loop1' (000000007c986016): fill_kobj_path: path = '/devices/virtual/block/loop1' [ 94.558096] kobject: 'loop0' (0000000056a34720): kobject_uevent_env [ 94.565461] kobject: 'loop0' (0000000056a34720): fill_kobj_path: path = '/devices/virtual/block/loop0' [ 94.590442] kobject: 'loop3' (00000000245fc40e): kobject_uevent_env [ 94.597719] kobject: 'loop3' (00000000245fc40e): fill_kobj_path: path = '/devices/virtual/block/loop3' [ 94.607916] kobject: 'loop4' (00000000958192da): kobject_uevent_env [ 94.614413] kobject: 'loop4' (00000000958192da): fill_kobj_path: path = '/devices/virtual/block/loop4' [ 94.637708] kobject: 'loop2' (00000000ec3ab255): kobject_uevent_env [ 94.644772] kobject: 'loop2' (00000000ec3ab255): fill_kobj_path: path = '/devices/virtual/block/loop2' [ 94.661093] kobject: 'loop5' (00000000c7341185): kobject_uevent_env [ 94.667961] kobject: 'loop5' (00000000c7341185): fill_kobj_path: path = '/devices/virtual/block/loop5' [ 94.685475] kobject: 'loop1' (000000007c986016): kobject_uevent_env [ 94.692696] kobject: 'loop1' (000000007c986016): fill_kobj_path: path = '/devices/virtual/block/loop1' 2018/12/10 10:04:22 executed programs: 288 [ 95.498344] kobject: 'loop0' (0000000056a34720): kobject_uevent_env [ 95.505500] kobject: 'loop0' (0000000056a34720): fill_kobj_path: path = '/devices/virtual/block/loop0' [ 95.524373] kobject: 'loop3' (00000000245fc40e): kobject_uevent_env [ 95.531584] kobject: 'loop3' (00000000245fc40e): fill_kobj_path: path = '/devices/virtual/block/loop3' [ 95.542227] kobject: 'loop4' (00000000958192da): kobject_uevent_env [ 95.549093] kobject: 'loop4' (00000000958192da): fill_kobj_path: path = '/devices/virtual/block/loop4' [ 95.578429] kobject: 'loop5' (00000000c7341185): kobject_uevent_env [ 95.585115] kobject: 'loop5' (00000000c7341185): fill_kobj_path: path = '/devices/virtual/block/loop5' [ 95.601422] kobject: 'loop2' (00000000ec3ab255): kobject_uevent_env [ 95.607983] kobject: 'loop2' (00000000ec3ab255): fill_kobj_path: path = '/devices/virtual/block/loop2' [ 95.623270] kobject: 'loop1' (000000007c986016): kobject_uevent_env [ 95.630044] kobject: 'loop1' (000000007c986016): fill_kobj_path: path = '/devices/virtual/block/loop1' [ 96.457994] kobject: 'loop0' (0000000056a34720): kobject_uevent_env [ 96.464449] kobject: 'loop0' (0000000056a34720): fill_kobj_path: path = '/devices/virtual/block/loop0' [ 96.477103] kobject: 'loop3' (00000000245fc40e): kobject_uevent_env [ 96.484590] kobject: 'loop3' (00000000245fc40e): fill_kobj_path: path = '/devices/virtual/block/loop3' [ 96.495046] kobject: 'loop4' (00000000958192da): kobject_uevent_env [ 96.501577] kobject: 'loop4' (00000000958192da): fill_kobj_path: path = '/devices/virtual/block/loop4' [ 96.513886] kobject: 'loop5' (00000000c7341185): kobject_uevent_env [ 96.525362] kobject: 'loop5' (00000000c7341185): fill_kobj_path: path = '/devices/virtual/block/loop5' [ 96.539890] kobject: 'loop2' (00000000ec3ab255): kobject_uevent_env [ 96.548302] kobject: 'loop2' (00000000ec3ab255): fill_kobj_path: path = '/devices/virtual/block/loop2' [ 96.558408] kobject: 'loop1' (000000007c986016): kobject_uevent_env [ 96.564937] kobject: 'loop1' (000000007c986016): fill_kobj_path: path = '/devices/virtual/block/loop1' [ 97.358387] kobject: 'loop0' (0000000056a34720): kobject_uevent_env [ 97.365181] kobject: 'loop0' (0000000056a34720): fill_kobj_path: path = '/devices/virtual/block/loop0' [