[info] Using makefile-style concurrent boot in runlevel 2. [ 26.937027] audit: type=1800 audit(1544569441.531:21): pid=5905 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [....] 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. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.13' (ECDSA) to the list of known hosts. 2018/12/11 23:04:26 parsed 1 programs 2018/12/11 23:04:28 executed programs: 0 syzkaller login: [ 54.254595] IPVS: ftp: loaded support on port[0] = 21 [ 54.255538] IPVS: ftp: loaded support on port[0] = 21 [ 54.270391] IPVS: ftp: loaded support on port[0] = 21 [ 54.272246] IPVS: ftp: loaded support on port[0] = 21 [ 54.280621] IPVS: ftp: loaded support on port[0] = 21 [ 54.291318] IPVS: ftp: loaded support on port[0] = 21 [ 55.092559] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.104363] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.113206] device bridge_slave_0 entered promiscuous mode [ 55.120665] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.127032] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.134320] device bridge_slave_0 entered promiscuous mode [ 55.146779] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.153878] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.161048] device bridge_slave_0 entered promiscuous mode [ 55.173978] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.181570] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.189214] device bridge_slave_1 entered promiscuous mode [ 55.196587] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.205214] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.212706] device bridge_slave_0 entered promiscuous mode [ 55.219372] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.225716] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.233517] device bridge_slave_1 entered promiscuous mode [ 55.240101] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.246451] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.253932] device bridge_slave_0 entered promiscuous mode [ 55.268581] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 55.276816] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.283989] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.291032] device bridge_slave_1 entered promiscuous mode [ 55.298588] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 55.305759] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.313309] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.320876] device bridge_slave_1 entered promiscuous mode [ 55.327066] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.334743] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.341947] device bridge_slave_1 entered promiscuous mode [ 55.349494] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 55.356548] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.364693] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.371894] device bridge_slave_0 entered promiscuous mode [ 55.381112] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 55.391345] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 55.401482] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 55.410822] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.417192] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.424538] device bridge_slave_1 entered promiscuous mode [ 55.436317] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 55.452044] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 55.461219] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 55.474734] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 55.493627] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 55.528537] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 55.544742] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 55.558737] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 55.603773] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 55.619490] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 55.629697] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 55.649211] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 55.658749] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 55.687945] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 55.712886] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 55.730968] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 55.741165] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 55.773006] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 55.853321] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 55.868951] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 55.883573] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 55.908911] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 55.917447] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 55.933987] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 55.945383] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 55.954774] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 55.993771] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 56.008614] team0: Port device team_slave_0 added [ 56.033716] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 56.045171] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 56.093970] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 56.101752] team0: Port device team_slave_0 added [ 56.110692] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 56.118495] team0: Port device team_slave_1 added [ 56.136326] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 56.149144] team0: Port device team_slave_0 added [ 56.175015] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 56.191382] team0: Port device team_slave_0 added [ 56.199682] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 56.207014] team0: Port device team_slave_1 added [ 56.230425] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 56.246105] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 56.261509] team0: Port device team_slave_1 added [ 56.269238] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 56.276667] team0: Port device team_slave_0 added [ 56.287781] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 56.295063] team0: Port device team_slave_0 added [ 56.311578] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 56.330144] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 56.337574] team0: Port device team_slave_1 added [ 56.349847] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 56.357619] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 56.369071] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 56.378250] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 56.386151] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 56.410228] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 56.417583] team0: Port device team_slave_1 added [ 56.423250] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 56.431836] team0: Port device team_slave_1 added [ 56.450207] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 56.458976] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 56.485860] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 56.506938] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 56.520996] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 56.534707] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 56.546292] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 56.554509] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 56.565022] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 56.580574] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 56.593737] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 56.604635] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 56.624886] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 56.637222] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 56.645744] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 56.653829] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 56.665691] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 56.681056] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 56.690001] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 56.701079] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 56.712727] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 56.729614] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 56.739534] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 56.748516] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 56.761243] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 56.769060] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 56.776722] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 56.784694] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 56.792386] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 56.804978] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 56.819238] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 56.829234] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 56.837135] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 56.873270] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 56.881417] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 56.889898] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 56.897950] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 56.905819] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 56.937288] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 56.961050] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 56.979536] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 57.391229] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.397816] bridge0: port 2(bridge_slave_1) entered forwarding state [ 57.404724] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.411160] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.425567] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 57.547384] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.553807] bridge0: port 2(bridge_slave_1) entered forwarding state [ 57.560569] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.566946] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.576836] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 57.585297] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.591689] bridge0: port 2(bridge_slave_1) entered forwarding state [ 57.598377] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.604744] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.615142] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 57.642799] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.649431] bridge0: port 2(bridge_slave_1) entered forwarding state [ 57.656103] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.662544] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.683166] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 57.703973] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.710374] bridge0: port 2(bridge_slave_1) entered forwarding state [ 57.717135] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.723567] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.750215] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 57.804276] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.810676] bridge0: port 2(bridge_slave_1) entered forwarding state [ 57.817315] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.823731] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.833074] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 57.859112] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 57.866595] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 57.877467] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 57.885978] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 57.894613] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 57.902240] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 60.151159] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.199095] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.328048] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.358519] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.410945] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 60.437822] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.473660] 8021q: adding VLAN 0 to HW filter on device bond0 [ 60.484967] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 60.597381] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 60.613076] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 60.677000] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 60.689819] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 60.696825] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 60.710804] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 60.719534] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.735937] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 60.750310] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 60.757315] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.870154] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 60.876310] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 60.886041] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.910800] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 60.918000] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 60.924158] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 60.934845] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 60.945807] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 60.955248] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 61.025062] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.038601] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.066089] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 61.074571] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 61.085483] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 61.150883] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.205563] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.216055] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.281281] 8021q: adding VLAN 0 to HW filter on device team0 2018/12/11 23:04:38 executed programs: 6 2018/12/11 23:04:43 executed programs: 42 2018/12/11 23:04:49 executed programs: 78 2018/12/11 23:04:54 executed programs: 114 2018/12/11 23:05:00 executed programs: 150 2018/12/11 23:05:05 executed programs: 186 2018/12/11 23:05:11 executed programs: 222 2018/12/11 23:05:17 executed programs: 258 [ 103.297710] [ 103.299362] ===================================================== [ 103.305785] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 103.312519] 4.20.0-rc6+ #150 Not tainted [ 103.316554] ----------------------------------------------------- [ 103.322766] syz-executor3/8964 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire: [ 103.329945] 00000000bf8b8621 (&ctx->fd_wqh){....}, at: aio_poll+0x760/0x1420 [ 103.337133] [ 103.337133] and this task is already holding: [ 103.343083] 0000000074ede814 (&(&ctx->ctx_lock)->rlock){..-.}, at: aio_poll+0x738/0x1420 [ 103.351562] which would create a new lock dependency: [ 103.356746] (&(&ctx->ctx_lock)->rlock){..-.} -> (&ctx->fd_wqh){....} [ 103.363355] [ 103.363355] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 103.371792] (&(&ctx->ctx_lock)->rlock){..-.} [ 103.371799] [ 103.371799] ... which became SOFTIRQ-irq-safe at: [ 103.382855] lock_acquire+0x1ed/0x520 [ 103.386877] _raw_spin_lock_irq+0x61/0x80 [ 103.391132] free_ioctx_users+0xbc/0x710 [ 103.395340] percpu_ref_switch_to_atomic_rcu+0x563/0x730 [ 103.401048] rcu_process_callbacks+0x100a/0x1ac0 [ 103.406018] __do_softirq+0x308/0xb7e [ 103.409883] irq_exit+0x17f/0x1c0 [ 103.413506] smp_apic_timer_interrupt+0x1cb/0x760 [ 103.418519] apic_timer_interrupt+0xf/0x20 [ 103.422873] _raw_spin_unlock_irqrestore+0xaf/0xd0 [ 103.427920] __debug_object_init+0x57d/0x1290 [ 103.432490] debug_object_init_on_stack+0x19/0x20 [ 103.437611] hrtimer_nanosleep+0x16b/0x620 [ 103.442023] __x64_sys_nanosleep+0x1e7/0x280 [ 103.446616] do_syscall_64+0x1b9/0x820 [ 103.450741] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 103.456077] [ 103.456077] to a SOFTIRQ-irq-unsafe lock: [ 103.461903] (&ctx->fault_pending_wqh){+.+.} [ 103.461910] [ 103.461910] ... which became SOFTIRQ-irq-unsafe at: [ 103.472990] ... [ 103.473016] lock_acquire+0x1ed/0x520 [ 103.478760] _raw_spin_lock+0x2d/0x40 [ 103.482634] userfaultfd_release+0x63e/0x8d0 [ 103.487224] __fput+0x385/0xa30 [ 103.490578] ____fput+0x15/0x20 [ 103.494015] task_work_run+0x1e8/0x2a0 [ 103.497979] get_signal+0x1558/0x1980 [ 103.501947] do_signal+0x9c/0x21c0 [ 103.505575] exit_to_usermode_loop+0x2e5/0x380 [ 103.510536] do_syscall_64+0x6be/0x820 [ 103.514652] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 103.519906] [ 103.519906] other info that might help us debug this: [ 103.519906] [ 103.528161] Chain exists of: [ 103.528161] &(&ctx->ctx_lock)->rlock --> &ctx->fd_wqh --> &ctx->fault_pending_wqh [ 103.528161] [ 103.540392] Possible interrupt unsafe locking scenario: [ 103.540392] [ 103.547301] CPU0 CPU1 [ 103.551947] ---- ---- [ 103.556596] lock(&ctx->fault_pending_wqh); [ 103.560984] local_irq_disable(); [ 103.567138] lock(&(&ctx->ctx_lock)->rlock); [ 103.574341] lock(&ctx->fd_wqh); [ 103.580300] [ 103.583066] lock(&(&ctx->ctx_lock)->rlock); [ 103.587860] [ 103.587860] *** DEADLOCK *** [ 103.587860] [ 103.593901] 1 lock held by syz-executor3/8964: [ 103.598575] #0: 0000000074ede814 (&(&ctx->ctx_lock)->rlock){..-.}, at: aio_poll+0x738/0x1420 [ 103.607426] [ 103.607426] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 103.616516] -> (&(&ctx->ctx_lock)->rlock){..-.} { [ 103.621475] IN-SOFTIRQ-W at: [ 103.624752] lock_acquire+0x1ed/0x520 [ 103.630398] _raw_spin_lock_irq+0x61/0x80 [ 103.636413] free_ioctx_users+0xbc/0x710 [ 103.642349] percpu_ref_switch_to_atomic_rcu+0x563/0x730 [ 103.649813] rcu_process_callbacks+0x100a/0x1ac0 [ 103.656201] __do_softirq+0x308/0xb7e [ 103.661760] irq_exit+0x17f/0x1c0 [ 103.667094] smp_apic_timer_interrupt+0x1cb/0x760 [ 103.673843] apic_timer_interrupt+0xf/0x20 [ 103.679724] _raw_spin_unlock_irqrestore+0xaf/0xd0 [ 103.686697] __debug_object_init+0x57d/0x1290 [ 103.692926] debug_object_init_on_stack+0x19/0x20 [ 103.699396] hrtimer_nanosleep+0x16b/0x620 [ 103.705511] __x64_sys_nanosleep+0x1e7/0x280 [ 103.711671] do_syscall_64+0x1b9/0x820 [ 103.717195] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 103.724023] INITIAL USE at: [ 103.727242] lock_acquire+0x1ed/0x520 [ 103.732599] _raw_spin_lock_irq+0x61/0x80 [ 103.738530] free_ioctx_users+0xbc/0x710 [ 103.744137] percpu_ref_switch_to_atomic_rcu+0x563/0x730 [ 103.751403] rcu_process_callbacks+0x100a/0x1ac0 [ 103.757830] __do_softirq+0x308/0xb7e [ 103.763193] irq_exit+0x17f/0x1c0 [ 103.768205] smp_apic_timer_interrupt+0x1cb/0x760 [ 103.774604] apic_timer_interrupt+0xf/0x20 [ 103.780557] _raw_spin_unlock_irqrestore+0xaf/0xd0 [ 103.787028] __debug_object_init+0x57d/0x1290 [ 103.793183] debug_object_init_on_stack+0x19/0x20 [ 103.799572] hrtimer_nanosleep+0x16b/0x620 [ 103.805466] __x64_sys_nanosleep+0x1e7/0x280 [ 103.811654] do_syscall_64+0x1b9/0x820 [ 103.817363] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 103.824201] } [ 103.826104] ... key at: [] __key.51068+0x0/0x40 [ 103.832966] ... acquired at: [ 103.836399] lock_acquire+0x1ed/0x520 [ 103.840594] _raw_spin_lock+0x2d/0x40 [ 103.844643] aio_poll+0x760/0x1420 [ 103.848469] io_submit_one+0xa49/0xf80 [ 103.852521] __x64_sys_io_submit+0x1b7/0x580 [ 103.857081] do_syscall_64+0x1b9/0x820 [ 103.861362] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 103.866716] [ 103.868338] [ 103.868338] the dependencies between the lock to be acquired [ 103.868341] and SOFTIRQ-irq-unsafe lock: [ 103.879739] -> (&ctx->fault_pending_wqh){+.+.} { [ 103.884796] HARDIRQ-ON-W at: [ 103.888154] lock_acquire+0x1ed/0x520 [ 103.893761] _raw_spin_lock+0x2d/0x40 [ 103.899380] userfaultfd_release+0x63e/0x8d0 [ 103.905808] __fput+0x385/0xa30 [ 103.911013] ____fput+0x15/0x20 [ 103.916219] task_work_run+0x1e8/0x2a0 [ 103.922184] get_signal+0x1558/0x1980 [ 103.927793] do_signal+0x9c/0x21c0 [ 103.933155] exit_to_usermode_loop+0x2e5/0x380 [ 103.939556] do_syscall_64+0x6be/0x820 [ 103.945244] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 103.952336] SOFTIRQ-ON-W at: [ 103.955815] lock_acquire+0x1ed/0x520 [ 103.961598] _raw_spin_lock+0x2d/0x40 [ 103.967434] userfaultfd_release+0x63e/0x8d0 [ 103.973700] __fput+0x385/0xa30 [ 103.978785] ____fput+0x15/0x20 [ 103.983865] task_work_run+0x1e8/0x2a0 [ 103.989559] get_signal+0x1558/0x1980 [ 103.995309] do_signal+0x9c/0x21c0 [ 104.000656] exit_to_usermode_loop+0x2e5/0x380 [ 104.007038] do_syscall_64+0x6be/0x820 [ 104.012740] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 104.020002] INITIAL USE at: [ 104.023319] lock_acquire+0x1ed/0x520 [ 104.028865] _raw_spin_lock+0x2d/0x40 [ 104.034401] userfaultfd_ctx_read+0x4f3/0x2180 [ 104.040910] userfaultfd_read+0x1e2/0x2c0 [ 104.046909] __vfs_read+0x117/0x9b0 [ 104.052362] vfs_read+0x17f/0x3c0 [ 104.057563] ksys_read+0x101/0x260 [ 104.062940] __x64_sys_read+0x73/0xb0 [ 104.068499] do_syscall_64+0x1b9/0x820 [ 104.074149] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 104.081186] } [ 104.083071] ... key at: [] __key.44676+0x0/0x40 [ 104.089883] ... acquired at: [ 104.093059] _raw_spin_lock+0x2d/0x40 [ 104.097010] userfaultfd_ctx_read+0x4f3/0x2180 [ 104.101754] userfaultfd_read+0x1e2/0x2c0 [ 104.106187] __vfs_read+0x117/0x9b0 [ 104.109988] vfs_read+0x17f/0x3c0 [ 104.113699] ksys_read+0x101/0x260 [ 104.117392] __x64_sys_read+0x73/0xb0 [ 104.121359] do_syscall_64+0x1b9/0x820 [ 104.125512] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 104.130948] [ 104.132589] -> (&ctx->fd_wqh){....} { [ 104.136380] INITIAL USE at: [ 104.139703] lock_acquire+0x1ed/0x520 [ 104.145049] _raw_spin_lock_irq+0x61/0x80 [ 104.150760] userfaultfd_ctx_read+0x2e4/0x2180 [ 104.157018] userfaultfd_read+0x1e2/0x2c0 [ 104.162749] __vfs_read+0x117/0x9b0 [ 104.168021] vfs_read+0x17f/0x3c0 [ 104.173023] ksys_read+0x101/0x260 [ 104.178217] __x64_sys_read+0x73/0xb0 [ 104.183679] do_syscall_64+0x1b9/0x820 [ 104.189301] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 104.196135] } [ 104.197921] ... key at: [] __key.44679+0x0/0x40 [ 104.204650] ... acquired at: [ 104.207758] lock_acquire+0x1ed/0x520 [ 104.211805] _raw_spin_lock+0x2d/0x40 [ 104.215955] aio_poll+0x760/0x1420 [ 104.219658] io_submit_one+0xa49/0xf80 [ 104.223798] __x64_sys_io_submit+0x1b7/0x580 [ 104.228468] do_syscall_64+0x1b9/0x820 [ 104.232517] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 104.237886] [ 104.239669] [ 104.239669] stack backtrace: [ 104.244288] CPU: 1 PID: 8964 Comm: syz-executor3 Not tainted 4.20.0-rc6+ #150 [ 104.251655] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 104.261290] Call Trace: [ 104.263860] dump_stack+0x244/0x39d [ 104.267589] ? dump_stack_print_info.cold.1+0x20/0x20 [ 104.272935] ? print_shortest_lock_dependencies.cold.55+0x18e/0x211 [ 104.279429] ? vprintk_func+0x85/0x181 [ 104.283404] check_usage.cold.58+0x6d5/0xad1 [ 104.288062] ? check_usage_forwards+0x3d0/0x3d0 [ 104.292726] ? __lock_acquire+0x62f/0x4c20 [ 104.296939] ? __switch_to_asm+0x34/0x70 [ 104.300992] ? lockdep_on+0x50/0x50 [ 104.304618] ? mark_held_locks+0x130/0x130 [ 104.308833] ? __lock_acquire+0x62f/0x4c20 [ 104.313056] ? trace_event_raw_event_lock_acquire+0x440/0x440 [ 104.318962] __lock_acquire+0x238a/0x4c20 [ 104.323214] ? __lock_acquire+0x238a/0x4c20 [ 104.327533] ? mark_held_locks+0x130/0x130 [ 104.331747] ? zap_class+0x640/0x640 [ 104.335591] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 104.340685] ? find_held_lock+0x36/0x1c0 [ 104.344736] ? add_wait_queue+0x1b9/0x2b0 [ 104.348861] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 104.353952] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 104.359033] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 104.363970] ? trace_hardirqs_on+0xbd/0x310 [ 104.368282] ? kasan_check_read+0x11/0x20 [ 104.372437] ? add_wait_queue+0x1b9/0x2b0 [ 104.376598] ? trace_hardirqs_off_caller+0x310/0x310 [ 104.381820] ? rcu_softirq_qs+0x20/0x20 [ 104.385787] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 104.390992] ? add_wait_queue+0x1b9/0x2b0 [ 104.395130] ? __wake_up_locked_key_bookmark+0x20/0x20 [ 104.400506] lock_acquire+0x1ed/0x520 [ 104.404427] ? aio_poll+0x760/0x1420 [ 104.408239] ? lock_release+0xa00/0xa00 [ 104.412328] ? kasan_check_read+0x11/0x20 [ 104.416622] ? do_raw_spin_lock+0x14f/0x350 [ 104.420937] ? __ia32_sys_eventfd+0x40/0x40 [ 104.425246] ? rwlock_bug.part.2+0x90/0x90 [ 104.429557] ? trace_hardirqs_on+0x310/0x310 [ 104.434053] ? __save_stack_trace+0x8d/0xf0 [ 104.438543] _raw_spin_lock+0x2d/0x40 [ 104.442346] ? aio_poll+0x760/0x1420 [ 104.446044] aio_poll+0x760/0x1420 [ 104.449849] ? free_ioctx_users+0x710/0x710 [ 104.454159] ? kmem_cache_alloc+0x12e/0x730 [ 104.458516] ? aio_setup_rw+0x170/0x170 [ 104.462476] ? zap_class+0x640/0x640 [ 104.466172] ? mark_held_locks+0x130/0x130 [ 104.470406] ? zap_class+0x640/0x640 [ 104.474253] ? find_held_lock+0x36/0x1c0 [ 104.478431] ? find_held_lock+0x36/0x1c0 [ 104.482478] ? __might_fault+0x12b/0x1e0 [ 104.486515] ? lock_downgrade+0x900/0x900 [ 104.490649] ? lock_release+0xa00/0xa00 [ 104.494789] ? perf_trace_sched_process_exec+0x860/0x860 [ 104.500230] ? kasan_check_read+0x11/0x20 [ 104.504554] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 104.509922] io_submit_one+0xa49/0xf80 [ 104.513793] ? io_submit_one+0xa49/0xf80 [ 104.518124] ? aio_poll+0x1420/0x1420 [ 104.522013] ? __might_fault+0x12b/0x1e0 [ 104.526056] ? lock_downgrade+0x900/0x900 [ 104.530194] ? perf_trace_sched_process_exec+0x860/0x860 [ 104.535634] __x64_sys_io_submit+0x1b7/0x580 [ 104.540125] ? __ia32_sys_io_destroy+0x580/0x580 [ 104.545008] ? trace_hardirqs_on+0xbd/0x310 [ 104.549317] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 104.554840] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 104.560326] ? trace_hardirqs_off_caller+0x310/0x310 [ 104.565437] do_syscall_64+0x1b9/0x820 [ 104.569364] ? __ia32_sys_io_destroy+0x580/0x580 [ 104.574227] ? do_syscall_64+0x1b9/0x820 [ 104.578291] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 104.583636] ? syscall_return_slowpath+0x5e0/0x5e0 [ 104.588555] ? trace_hardirqs_on_caller+0x310/0x310 [ 104.593558] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 104.598704] ? post_copy_siginfo_from_user.isra.25.part.26+0x250/0x250 [ 104.605367] ? __switch_to_asm+0x40/0x70 [ 104.609421] ? __switch_to_asm+0x34/0x70 [ 104.613482] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 104.618408] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 104.623710] RIP: 0033:0x457679 [ 104.626908] 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 [ 104.646086] RSP: 002b:00007fe3940f3c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 [ 104.653991] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457679 [ 104.661594] RDX: 0000000020000b00 RSI: 0000000000000001 RDI: 00007fe394116000 [ 104.668948] RBP: 000000000072c040 R08: 0000000000000000 R09: 0000000000000000 [ 104.676209] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe3940f46d4 [ 104.683552] R13: 00000000004be9c4 R14: 00000000004cf5a8 R15: 00000000ffffffff [ 104.730859] kobject: 'loop0' (00000000bcd12d8d): kobject_uevent_env [ 104.737383] kobject: 'loop0' (00000000bcd12d8d): fill_kobj_path: path = '/devices/virtual/block/loop0' [ 104.777013] kobject: 'loop2' (00000000578982d2): kobject_uevent_env [ 104.784894] kobject: 'loop2' (00000000578982d2): fill_kobj_path: path = '/devices/virtual/block/loop2' [ 104.795196] kobject: 'loop5' (0000000017420b4f): kobject_uevent_env [ 104.801715] kobject: 'loop5' (0000000017420b4f): fill_kobj_path: path = '/devices/virtual/block/loop5' [ 104.811797] kobject: 'loop3' (00000000ce5b33cf): kobject_uevent_env [ 104.818416] kobject: 'loop3' (00000000ce5b33cf): fill_kobj_path: path = '/devices/virtual/block/loop3' [ 104.828263] kobject: 'loop4' (0000000016f41f9d): kobject_uevent_env [ 104.834708] kobject: 'loop4' (0000000016f41f9d): fill_kobj_path: path = '/devices/virtual/block/loop4' [ 104.844539] kobject: 'loop1' (0000000097110ab5): kobject_uevent_env [ 104.854922] kobject: 'loop1' (0000000097110ab5): fill_kobj_path: path = '/devices/virtual/block/loop1' [ 105.660502] kobject: 'loop0' (00000000bcd12d8d): kobject_uevent_env [ 105.667002] kobject: 'loop0' (00000000bcd12d8d): fill_kobj_path: path = '/devices/virtual/block/loop0' [ 105.676923] kobject: 'loop4' (0000000016f41f9d): kobject_uevent_env [ 105.683364] kobject: 'loop4' (0000000016f41f9d): fill_kobj_path: path = '/devices/virtual/block/loop4' [ 105.693066] kobject: 'loop5' (0000000017420b4f): kobject_uevent_env [ 105.699634] kobject: 'loop5' (0000000017420b4f): fill_kobj_path: path = '/devices/virtual/block/loop5' [ 105.710314] kobject: 'loop2' (00000000578982d2): kobject_uevent_env [ 105.716736] kobject: 'loop2' (00000000578982d2): fill_kobj_path: path = '/devices/virtual/block/loop2' [ 105.729212] kobject: 'loop3' (00000000ce5b33cf): kobject_uevent_env [ 105.737129] kobject: 'loop3' (00000000ce5b33cf): fill_kobj_path: path = '/devices/virtual/block/loop3' [ 105.755580] kobject: 'loop1' (0000000097110ab5): kobject_uevent_env [ 105.762552] kobject: 'loop1' (0000000097110ab5): fill_kobj_path: path = '/devices/virtual/block/loop1' [ 106.601234] kobject: 'loop4' (0000000016f41f9d): kobject_uevent_env [ 106.611923] kobject: 'loop4' (0000000016f41f9d): fill_kobj_path: path = '/devices/virtual/block/loop4' [ 106.627464] kobject: 'loop5' (0000000017420b4f): kobject_uevent_env [ 106.635084] kobject: 'loop5' (0000000017420b4f): fill_kobj_path: path = '/devices/virtual/block/loop5' [ 106.645296] kobject: 'loop0' (00000000bcd12d8d): kobject_uevent_env [ 106.652279] kobject: 'loop0' (00000000bcd12d8d): fill_kobj_path: path = '/devices/virtual/block/loop0' [ 106.662259] kobject: 'loop3' (00000000ce5b33cf): kobject_uevent_env [ 106.668834] kobject: 'loop3' (00000000ce5b33cf): fill_kobj_path: path = '/devices/virtual/block/loop3' [ 106.678869] kobject: 'loop2' (00000000578982d2): kobject_uevent_env [ 106.685374] kobject: 'loop2' (00000000578982d2): fill_kobj_path: path = '/devices/virtual/block/loop2' [ 106.695404] kobject: 'loop1' (0000000097110ab5): kobject_uevent_env [ 106.701898] kobject: 'loop1' (0000000097110ab5): fill_kobj_path: path = '/devices/virtual/block/loop1' 2018/12/11 23:05:22 executed programs: 282 [ 107.531511] kobject: 'loop5' (0000000017420b4f): kobject_uevent_env [ 107.538087] kobject: 'loop5' (0000000017420b4f): fill_kobj_path: path = '/devices/virtual/block/loop5' [ 107.550028] kobject: 'loop4' (0000000016f41f9d): kobject_uevent_env [ 107.563105] kobject: 'loop4' (0000000016f41f9d): fill_kobj_path: path = '/devices/virtual/block/loop4' [ 107.578859] kobject: 'loop0' (00000000bcd12d8d): kobject_uevent_env [ 107.586086] kobject: 'loop0' (00000000bcd12d8d): fill_kobj_path: path = '/devices/virtual/block/loop0' [ 107.596127] kobject: 'loop3' (00000000ce5b33cf): kobject_uevent_env [ 107.602784] kobject: 'loop3' (00000000ce5b33cf): fill_kobj_path: path = '/devices/virtual/block/loop3' [ 107.612636] kobject: 'loop1' (0000000097110ab5): kobject_uevent_env [ 107.619656] kobject: 'loop1' (0000000097110ab5): fill_kobj_path: path = '/devices/virtual/block/loop1' [ 107.629455] kobject: 'loop2' (00000000578982d2): kobject_uevent_env [ 107.635862] kobject: 'loop2' (00000000578982d2): fill_kobj_path: path = '/devices/virtual/block/loop2' [ 108.471142] kobject: 'loop5' (0000000017420b4f): kobject_uevent_env [ 108.477813] kobject: 'loop5' (0000000017420b4f): fill_kobj_path: path = '/devices/virtual/block/loop5' [ 108.495980] kobject: 'loop4' (0000000016f41f9d): kobject_uevent_env [ 108.503572] kobject: 'loop4' (0000000016f41f9d): fill_kobj_path: path = '/devices/virtual/block/loop4' [ 108.526826] kobject: 'loop0' (00000000bcd12d8d): kobject_uevent_env [ 108.534381] kobject: 'loop0' (00000000bcd12d8d): fill_kobj_path: path = '/devices/virtual/block/loop0' [ 108.546610] kobject: 'loop3' (00000000ce5b33cf): kobject_uevent_env [ 108.553250] kobject: 'loop3' (00000000ce5b33cf): fill_kobj_path: path = '/devices/virtual/block/loop3' [ 108.563338] kobject: 'loop1' (0000000097110ab5): kobject_uevent_env [ 108.569829] kobject: 'loop1' (0000000097110ab5): fill_kobj_path: path = '/devices/virtual/block/loop1' [ 108.579569] kobject: 'loop2' (00000000578982d2): kobject_uevent_env [ 108.585996] kobject: 'loop2' (00000000578982d2): fill_kobj_path: path = '/devices/virtual/block/loop2' [ 109.400526] kobject: 'loop5' (0000000017420b4f): kobject_uevent_env [ 109.407843] kobject: 'loop5' (0000000017420b4f): fill_kobj_path: path = '/devices/virtual/block/loop5' [ 109.423447] kobject: 'loop4' (0000000016f41f9d): kobject_uevent_env [ 109.431765] kobject: 'loop4' (0000000016f41f9d): fill_kobj_path: path = '/devices/virtual/block/loop4' [ 109.454671] kobject: 'loop0' (00000000bcd12d8d): kobject_uevent_env [ 109.461957] kobject: 'loop0' (00000000bcd12d8d): fill_kobj_path: path = '/devices/virtual/block/loop0' [ 109.473430] kobject: 'loop2' (00000000578982d2): kobject_uevent_env [ 109.480332] kobject: 'loop2' (00000000578982d2): fill_kobj_path: path = '/devices/virtual/block/loop2' [ 109.490133] kobject: 'loop3' (00000000ce5b33cf): kobject_uevent_env [ 109.496536] kobject: 'loop3' (00000000ce5b33cf): fill_kobj_path: path = '/devices/virtual/block/loop3' [ 109.507435] kobject: 'loop1' (0000000097110ab5): kobject_uevent_env [ 109.517731] kobject: 'loop1' (0000000097110ab5): fill_kobj_path: path = '/devices/virtual/block/loop1' [ 110.330971] kobject: 'loop5' (0000000017420b4f): kobject_uevent_env [ 110.337885] kobject: 'loop5' (0000000017420b4f): fill_kobj_path: path = '/devices/virtual/block/loop5' [ 110.352210] kobject: 'loop4' (0000000016f41f9d): kobject_uevent_env [ 110.361785] kobject: 'loop4' (0000000016f41f9d): fill_kobj_path: path = '/devices/virtual/block/loop4' [ 110.382981] kobject: 'loop2' (00000000578982d2): kobject_uevent_env [ 110.392639] kobject: 'loop2' (00000000578982d2): fill_kobj_path: path = '/devices/virtual/block/loop2' [ 110.405081] kobject: 'loop0' (00000000bcd12d8d): kobject_uevent_env [ 110.411716] kobject: 'loop0' (00000000bcd12d8d): fill_kobj_path: path = '/devices/virtual/block/loop0' [ 110.421540] kobject: 'loop3' (00000000ce5b33cf): kobject_uevent_env [ 110.428209] kobject: 'loop3' (00000000ce5b33cf): fill_kobj_path: path = '/devices/virtual/block/loop3' [ 110.439194] kobject: 'loop1' (0000000097110ab5): kobject_uevent_env [ 110.445632] kobject: 'loop1' (0000000097110ab5): fill_kobj_path: path = '/devices/virtual/block/loop1' [ 111.260722] kobject: 'loop5' (0000000017420b4f): kobject_uevent_env [ 111.267314] kobject: 'loop5' (0000000017420b4f): fill_kobj_path: path = '/devices/virtual/block/loop5' [ 111.281499] kobject: 'loop2' (00000000578982d2): kobject_uevent_env [ 111.292212] kobject: 'loop2' (00000000578982d2): fill_kobj_path: path = '/devices/virtual/block/loop2' [ 111.315204] kobject: 'loop4' (0000000016f41f9d): kobject_uevent_env [ 111.323566] kobject: 'loop4' (0000000016f41f9d): fill_kobj_path: path = '/devices/virtual/block/loop4' [ 111.333989] kobject: 'loop1' (0000000097110ab5): kobject_uevent_env [ 111.340643] kobject: 'loop1' (0000000097110ab5): fill_kobj_path: path = '/devices/virtual/block/loop1' [ 111.350537] kobject: 'loop3' (00000000ce5b33cf): kobject_uevent_env [ 111.356974] kobject: 'loop3' (00000000ce5b33cf): fill_kobj_path: path = '/devices/virtual/block/loop3' [ 111.367461] kobject: 'loop0' (00000000bcd12d8d): kobject_uevent_env [ 111.378531] kobject: 'loop0' (00000000bcd12d8d): fill_kobj_path: path = '/devices/virtual/block/loop0'