[....] 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. [ 28.937088] kauditd_printk_skb: 7 callbacks suppressed [ 28.937102] audit: type=1800 audit(1543829717.978:29): 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 [ 28.963611] audit: type=1800 audit(1543829717.978:30): 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 syzkaller login: [ 32.931134] sshd (6015) used greatest stack depth: 15744 bytes left Warning: Permanently added '10.128.10.36' (ECDSA) to the list of known hosts. 2018/12/03 09:36:19 parsed 1 programs 2018/12/03 09:36:21 executed programs: 0 [ 92.479491] IPVS: ftp: loaded support on port[0] = 21 [ 92.482123] IPVS: ftp: loaded support on port[0] = 21 [ 92.527549] IPVS: ftp: loaded support on port[0] = 21 [ 92.537079] IPVS: ftp: loaded support on port[0] = 21 [ 92.583526] IPVS: ftp: loaded support on port[0] = 21 [ 92.621881] IPVS: ftp: loaded support on port[0] = 21 [ 93.267751] bridge0: port 1(bridge_slave_0) entered blocking state [ 93.280162] bridge0: port 1(bridge_slave_0) entered disabled state [ 93.287549] device bridge_slave_0 entered promiscuous mode [ 93.363437] bridge0: port 2(bridge_slave_1) entered blocking state [ 93.369842] bridge0: port 2(bridge_slave_1) entered disabled state [ 93.384839] device bridge_slave_1 entered promiscuous mode [ 93.406066] bridge0: port 1(bridge_slave_0) entered blocking state [ 93.415172] bridge0: port 1(bridge_slave_0) entered disabled state [ 93.422095] device bridge_slave_0 entered promiscuous mode [ 93.434712] bridge0: port 1(bridge_slave_0) entered blocking state [ 93.441085] bridge0: port 1(bridge_slave_0) entered disabled state [ 93.451332] device bridge_slave_0 entered promiscuous mode [ 93.459978] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 93.468508] bridge0: port 2(bridge_slave_1) entered blocking state [ 93.479621] bridge0: port 2(bridge_slave_1) entered disabled state [ 93.490131] device bridge_slave_1 entered promiscuous mode [ 93.501171] bridge0: port 1(bridge_slave_0) entered blocking state [ 93.509336] bridge0: port 1(bridge_slave_0) entered disabled state [ 93.517333] device bridge_slave_0 entered promiscuous mode [ 93.526122] bridge0: port 2(bridge_slave_1) entered blocking state [ 93.532889] bridge0: port 2(bridge_slave_1) entered disabled state [ 93.539826] device bridge_slave_1 entered promiscuous mode [ 93.547171] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 93.561197] bridge0: port 1(bridge_slave_0) entered blocking state [ 93.570105] bridge0: port 1(bridge_slave_0) entered disabled state [ 93.577329] device bridge_slave_0 entered promiscuous mode [ 93.585481] bridge0: port 1(bridge_slave_0) entered blocking state [ 93.591845] bridge0: port 1(bridge_slave_0) entered disabled state [ 93.599575] device bridge_slave_0 entered promiscuous mode [ 93.606529] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 93.621228] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 93.630057] bridge0: port 2(bridge_slave_1) entered blocking state [ 93.642455] bridge0: port 2(bridge_slave_1) entered disabled state [ 93.649342] device bridge_slave_1 entered promiscuous mode [ 93.656940] bridge0: port 2(bridge_slave_1) entered blocking state [ 93.663647] bridge0: port 2(bridge_slave_1) entered disabled state [ 93.670501] device bridge_slave_1 entered promiscuous mode [ 93.682994] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 93.691858] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 93.707264] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 93.719355] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 93.734814] bridge0: port 2(bridge_slave_1) entered blocking state [ 93.741197] bridge0: port 2(bridge_slave_1) entered disabled state [ 93.750429] device bridge_slave_1 entered promiscuous mode [ 93.761973] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 93.799439] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 93.807772] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 93.834571] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 93.872043] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 93.904682] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 93.970443] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 94.001696] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 94.026970] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 94.046608] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 94.056928] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 94.087312] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 94.108431] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 94.128038] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 94.140187] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 94.156337] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 94.169525] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 94.186668] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 94.200549] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 94.224955] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 94.246730] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 94.257743] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 94.272184] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 94.291929] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 94.301498] team0: Port device team_slave_0 added [ 94.307419] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 94.319372] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 94.333417] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 94.342991] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 94.359418] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 94.374049] team0: Port device team_slave_1 added [ 94.382742] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 94.405868] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 94.416156] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 94.434078] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 94.444000] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 94.455312] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 94.480765] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 94.493369] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 94.544731] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 94.552135] team0: Port device team_slave_0 added [ 94.563989] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 94.584249] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 94.593410] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 94.603779] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 94.611078] team0: Port device team_slave_0 added [ 94.624172] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 94.641198] team0: Port device team_slave_1 added [ 94.656634] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 94.664971] team0: Port device team_slave_0 added [ 94.673309] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 94.698437] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 94.715235] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 94.732755] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 94.739966] team0: Port device team_slave_1 added [ 94.755878] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 94.766699] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 94.776869] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 94.788016] team0: Port device team_slave_0 added [ 94.793437] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 94.800811] team0: Port device team_slave_1 added [ 94.808997] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 94.823488] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 94.843983] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 94.855340] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 94.872383] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 94.891723] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 94.909360] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 94.918886] team0: Port device team_slave_1 added [ 94.928938] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 94.942534] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 94.954602] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 94.969725] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 94.980867] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 94.991725] team0: Port device team_slave_0 added [ 95.003462] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 95.010909] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 95.039104] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 95.050606] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 95.059102] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 95.067772] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 95.076339] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 95.089762] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 95.099915] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 95.108349] team0: Port device team_slave_1 added [ 95.115813] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 95.127029] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 95.138383] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 95.147549] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 95.159878] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 95.174735] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 95.182299] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 95.193666] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 95.201487] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 95.209312] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 95.217005] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 95.234735] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 95.250082] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 95.259275] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 95.283380] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 95.291471] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 95.299786] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 95.319641] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 95.343318] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 95.354668] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 95.371005] IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready [ 95.390552] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 95.403109] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 95.458799] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 95.473013] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 95.483180] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 95.569695] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 95.580166] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 95.598763] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 95.776047] bridge0: port 2(bridge_slave_1) entered blocking state [ 95.782574] bridge0: port 2(bridge_slave_1) entered forwarding state [ 95.789561] bridge0: port 1(bridge_slave_0) entered blocking state [ 95.796018] bridge0: port 1(bridge_slave_0) entered forwarding state [ 95.804332] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 95.991997] bridge0: port 2(bridge_slave_1) entered blocking state [ 95.998422] bridge0: port 2(bridge_slave_1) entered forwarding state [ 96.005123] bridge0: port 1(bridge_slave_0) entered blocking state [ 96.011482] bridge0: port 1(bridge_slave_0) entered forwarding state [ 96.020350] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 96.032652] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 96.045239] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 96.054926] bridge0: port 2(bridge_slave_1) entered blocking state [ 96.061287] bridge0: port 2(bridge_slave_1) entered forwarding state [ 96.068026] bridge0: port 1(bridge_slave_0) entered blocking state [ 96.074435] bridge0: port 1(bridge_slave_0) entered forwarding state [ 96.084850] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 96.102386] bridge0: port 2(bridge_slave_1) entered blocking state [ 96.108746] bridge0: port 2(bridge_slave_1) entered forwarding state [ 96.115467] bridge0: port 1(bridge_slave_0) entered blocking state [ 96.121853] bridge0: port 1(bridge_slave_0) entered forwarding state [ 96.129225] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 96.357193] bridge0: port 2(bridge_slave_1) entered blocking state [ 96.363678] bridge0: port 2(bridge_slave_1) entered forwarding state [ 96.370359] bridge0: port 1(bridge_slave_0) entered blocking state [ 96.376789] bridge0: port 1(bridge_slave_0) entered forwarding state [ 96.385548] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 96.528320] bridge0: port 2(bridge_slave_1) entered blocking state [ 96.534775] bridge0: port 2(bridge_slave_1) entered forwarding state [ 96.541443] bridge0: port 1(bridge_slave_0) entered blocking state [ 96.547874] bridge0: port 1(bridge_slave_0) entered forwarding state [ 96.564511] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 97.119798] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 97.128741] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 97.136728] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 97.144187] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 98.652024] 8021q: adding VLAN 0 to HW filter on device bond0 [ 98.853955] 8021q: adding VLAN 0 to HW filter on device bond0 [ 98.861814] 8021q: adding VLAN 0 to HW filter on device bond0 [ 98.926998] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 99.009441] 8021q: adding VLAN 0 to HW filter on device bond0 [ 99.086874] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 99.151550] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 99.170194] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 99.183076] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 99.193542] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 99.267521] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 99.298401] 8021q: adding VLAN 0 to HW filter on device bond0 [ 99.348399] 8021q: adding VLAN 0 to HW filter on device bond0 [ 99.370931] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 99.383744] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 99.394828] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 99.423773] 8021q: adding VLAN 0 to HW filter on device team0 [ 99.470344] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 99.483459] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 99.493956] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 99.583869] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 99.594082] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 99.608450] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 99.618798] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 99.635561] 8021q: adding VLAN 0 to HW filter on device team0 [ 99.651265] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 99.748270] 8021q: adding VLAN 0 to HW filter on device team0 [ 99.841489] 8021q: adding VLAN 0 to HW filter on device team0 [ 99.893199] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 99.899498] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 99.907758] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 99.931697] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 99.947279] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 99.958612] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 100.180830] 8021q: adding VLAN 0 to HW filter on device team0 [ 100.220708] 8021q: adding VLAN 0 to HW filter on device team0 2018/12/03 09:36:31 executed programs: 6 2018/12/03 09:36:36 executed programs: 40 2018/12/03 09:36:41 executed programs: 72 2018/12/03 09:36:46 executed programs: 107 2018/12/03 09:36:51 executed programs: 138 2018/12/03 09:36:56 executed programs: 172 2018/12/03 09:37:01 executed programs: 204 2018/12/03 09:37:07 executed programs: 238 2018/12/03 09:37:12 executed programs: 270 2018/12/03 09:37:17 executed programs: 304 2018/12/03 09:37:22 executed programs: 336 2018/12/03 09:37:27 executed programs: 370 2018/12/03 09:37:32 executed programs: 404 2018/12/03 09:37:37 executed programs: 436 [ 173.161647] [ 173.163452] ===================================================== [ 173.169660] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 173.176387] 4.20.0-rc4+ #360 Not tainted [ 173.180418] ----------------------------------------------------- [ 173.186754] syz-executor5/9954 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire: [ 173.194024] 000000005577adde (&ctx->fd_wqh){....}, at: aio_poll+0x760/0x1420 [ 173.201211] [ 173.201211] and this task is already holding: [ 173.207280] 000000000be7238d (&(&ctx->ctx_lock)->rlock){..-.}, at: aio_poll+0x738/0x1420 [ 173.215514] which would create a new lock dependency: [ 173.220698] (&(&ctx->ctx_lock)->rlock){..-.} -> (&ctx->fd_wqh){....} [ 173.227377] [ 173.227377] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 173.235409] (&(&ctx->ctx_lock)->rlock){..-.} [ 173.235416] [ 173.235416] ... which became SOFTIRQ-irq-safe at: [ 173.246356] lock_acquire+0x1ed/0x520 [ 173.250243] _raw_spin_lock_irq+0x61/0x80 [ 173.254464] free_ioctx_users+0xbc/0x710 [ 173.258600] percpu_ref_switch_to_atomic_rcu+0x563/0x730 [ 173.264120] rcu_process_callbacks+0x100a/0x1ac0 [ 173.268944] __do_softirq+0x308/0xb7e [ 173.272889] irq_exit+0x17f/0x1c0 [ 173.276442] smp_apic_timer_interrupt+0x1cb/0x760 [ 173.281367] apic_timer_interrupt+0xf/0x20 [ 173.285669] native_safe_halt+0x6/0x10 [ 173.289638] default_idle+0xbf/0x490 [ 173.293417] arch_cpu_idle+0x10/0x20 [ 173.297197] default_idle_call+0x6d/0x90 [ 173.301324] do_idle+0x49b/0x5c0 [ 173.304755] cpu_startup_entry+0x18/0x20 [ 173.308879] rest_init+0x243/0x372 [ 173.312488] arch_call_rest_init+0xe/0x1b [ 173.316700] start_kernel+0x9f5/0xa30 [ 173.320578] x86_64_start_reservations+0x29/0x2b [ 173.325399] x86_64_start_kernel+0x76/0x79 [ 173.329697] secondary_startup_64+0xa4/0xb0 [ 173.334085] [ 173.334085] to a SOFTIRQ-irq-unsafe lock: [ 173.339681] (&ctx->fault_pending_wqh){+.+.} [ 173.339687] [ 173.339687] ... which became SOFTIRQ-irq-unsafe at: [ 173.350579] ... [ 173.350591] lock_acquire+0x1ed/0x520 [ 173.356333] _raw_spin_lock+0x2d/0x40 [ 173.360278] userfaultfd_release+0x63e/0x8d0 [ 173.364764] __fput+0x385/0xa30 [ 173.368114] ____fput+0x15/0x20 [ 173.371466] task_work_run+0x1e8/0x2a0 [ 173.375428] exit_to_usermode_loop+0x318/0x380 [ 173.380096] do_syscall_64+0x6be/0x820 [ 173.384059] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 173.389314] [ 173.389314] other info that might help us debug this: [ 173.389314] [ 173.397450] Chain exists of: [ 173.397450] &(&ctx->ctx_lock)->rlock --> &ctx->fd_wqh --> &ctx->fault_pending_wqh [ 173.397450] [ 173.409580] Possible interrupt unsafe locking scenario: [ 173.409580] [ 173.416478] CPU0 CPU1 [ 173.421118] ---- ---- [ 173.425756] lock(&ctx->fault_pending_wqh); [ 173.430160] local_irq_disable(); [ 173.436190] lock(&(&ctx->ctx_lock)->rlock); [ 173.443196] lock(&ctx->fd_wqh); [ 173.449148] [ 173.451878] lock(&(&ctx->ctx_lock)->rlock); [ 173.456553] [ 173.456553] *** DEADLOCK *** [ 173.456553] [ 173.462621] 1 lock held by syz-executor5/9954: [ 173.467333] #0: 000000000be7238d (&(&ctx->ctx_lock)->rlock){..-.}, at: aio_poll+0x738/0x1420 [ 173.476034] [ 173.476034] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 173.485022] -> (&(&ctx->ctx_lock)->rlock){..-.} { [ 173.489842] IN-SOFTIRQ-W at: [ 173.493113] lock_acquire+0x1ed/0x520 [ 173.498562] _raw_spin_lock_irq+0x61/0x80 [ 173.504337] free_ioctx_users+0xbc/0x710 [ 173.510032] percpu_ref_switch_to_atomic_rcu+0x563/0x730 [ 173.517114] rcu_process_callbacks+0x100a/0x1ac0 [ 173.523500] __do_softirq+0x308/0xb7e [ 173.528929] irq_exit+0x17f/0x1c0 [ 173.534183] smp_apic_timer_interrupt+0x1cb/0x760 [ 173.540670] apic_timer_interrupt+0xf/0x20 [ 173.546539] native_safe_halt+0x6/0x10 [ 173.552053] default_idle+0xbf/0x490 [ 173.557395] arch_cpu_idle+0x10/0x20 [ 173.562744] default_idle_call+0x6d/0x90 [ 173.568439] do_idle+0x49b/0x5c0 [ 173.573438] cpu_startup_entry+0x18/0x20 [ 173.579124] rest_init+0x243/0x372 [ 173.584304] arch_call_rest_init+0xe/0x1b [ 173.590077] start_kernel+0x9f5/0xa30 [ 173.595507] x86_64_start_reservations+0x29/0x2b [ 173.601917] x86_64_start_kernel+0x76/0x79 [ 173.607785] secondary_startup_64+0xa4/0xb0 [ 173.613739] INITIAL USE at: [ 173.616935] lock_acquire+0x1ed/0x520 [ 173.622285] _raw_spin_lock_irq+0x61/0x80 [ 173.627975] free_ioctx_users+0xbc/0x710 [ 173.633598] percpu_ref_switch_to_atomic_rcu+0x563/0x730 [ 173.640592] rcu_process_callbacks+0x100a/0x1ac0 [ 173.646894] __do_softirq+0x308/0xb7e [ 173.652258] irq_exit+0x17f/0x1c0 [ 173.657279] smp_apic_timer_interrupt+0x1cb/0x760 [ 173.663669] apic_timer_interrupt+0xf/0x20 [ 173.669454] native_safe_halt+0x6/0x10 [ 173.674888] default_idle+0xbf/0x490 [ 173.680166] arch_cpu_idle+0x10/0x20 [ 173.685427] default_idle_call+0x6d/0x90 [ 173.691038] do_idle+0x49b/0x5c0 [ 173.695968] cpu_startup_entry+0x18/0x20 [ 173.701604] rest_init+0x243/0x372 [ 173.706701] arch_call_rest_init+0xe/0x1b [ 173.712391] start_kernel+0x9f5/0xa30 [ 173.717737] x86_64_start_reservations+0x29/0x2b [ 173.724039] x86_64_start_kernel+0x76/0x79 [ 173.729815] secondary_startup_64+0xa4/0xb0 [ 173.735846] } [ 173.737631] ... key at: [] __key.51053+0x0/0x40 [ 173.744355] ... acquired at: [ 173.747442] lock_acquire+0x1ed/0x520 [ 173.751394] _raw_spin_lock+0x2d/0x40 [ 173.755349] aio_poll+0x760/0x1420 [ 173.759039] io_submit_one+0xa49/0xf80 [ 173.763077] __x64_sys_io_submit+0x1b7/0x580 [ 173.767636] do_syscall_64+0x1b9/0x820 [ 173.771677] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 173.777026] [ 173.778629] [ 173.778629] the dependencies between the lock to be acquired [ 173.778632] and SOFTIRQ-irq-unsafe lock: [ 173.790006] -> (&ctx->fault_pending_wqh){+.+.} { [ 173.794845] HARDIRQ-ON-W at: [ 173.798269] lock_acquire+0x1ed/0x520 [ 173.803900] _raw_spin_lock+0x2d/0x40 [ 173.809505] userfaultfd_release+0x63e/0x8d0 [ 173.815717] __fput+0x385/0xa30 [ 173.820797] ____fput+0x15/0x20 [ 173.825878] task_work_run+0x1e8/0x2a0 [ 173.831566] exit_to_usermode_loop+0x318/0x380 [ 173.837947] do_syscall_64+0x6be/0x820 [ 173.843634] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 173.850622] SOFTIRQ-ON-W at: [ 173.853974] lock_acquire+0x1ed/0x520 [ 173.859594] _raw_spin_lock+0x2d/0x40 [ 173.865198] userfaultfd_release+0x63e/0x8d0 [ 173.871413] __fput+0x385/0xa30 [ 173.876497] ____fput+0x15/0x20 [ 173.881680] task_work_run+0x1e8/0x2a0 [ 173.887379] exit_to_usermode_loop+0x318/0x380 [ 173.893768] do_syscall_64+0x6be/0x820 [ 173.899457] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 173.906440] INITIAL USE at: [ 173.909707] lock_acquire+0x1ed/0x520 [ 173.915226] _raw_spin_lock+0x2d/0x40 [ 173.920747] userfaultfd_ctx_read+0x4f3/0x2180 [ 173.927056] userfaultfd_read+0x1e2/0x2c0 [ 173.932916] __vfs_read+0x117/0x9b0 [ 173.938276] vfs_read+0x17f/0x3c0 [ 173.943442] ksys_read+0x101/0x260 [ 173.948695] __x64_sys_read+0x73/0xb0 [ 173.954209] do_syscall_64+0x1b9/0x820 [ 173.959820] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 173.966724] } [ 173.968600] ... key at: [] __key.44661+0x0/0x40 [ 173.975423] ... acquired at: [ 173.978709] _raw_spin_lock+0x2d/0x40 [ 173.982672] userfaultfd_ctx_read+0x4f3/0x2180 [ 173.987414] userfaultfd_read+0x1e2/0x2c0 [ 173.991718] __vfs_read+0x117/0x9b0 [ 173.995499] vfs_read+0x17f/0x3c0 [ 173.999105] ksys_read+0x101/0x260 [ 174.002806] __x64_sys_read+0x73/0xb0 [ 174.006759] do_syscall_64+0x1b9/0x820 [ 174.010804] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 174.016139] [ 174.017756] -> (&ctx->fd_wqh){....} { [ 174.021535] INITIAL USE at: [ 174.024729] lock_acquire+0x1ed/0x520 [ 174.030133] _raw_spin_lock_irq+0x61/0x80 [ 174.035829] userfaultfd_ctx_read+0x2e4/0x2180 [ 174.041993] userfaultfd_read+0x1e2/0x2c0 [ 174.047679] __vfs_read+0x117/0x9b0 [ 174.052857] vfs_read+0x17f/0x3c0 [ 174.057856] ksys_read+0x101/0x260 [ 174.063075] __x64_sys_read+0x73/0xb0 [ 174.068555] do_syscall_64+0x1b9/0x820 [ 174.074031] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 174.080758] } [ 174.082582] ... key at: [] __key.44664+0x0/0x40 [ 174.089343] ... acquired at: [ 174.092430] lock_acquire+0x1ed/0x520 [ 174.096382] _raw_spin_lock+0x2d/0x40 [ 174.100337] aio_poll+0x760/0x1420 [ 174.104041] io_submit_one+0xa49/0xf80 [ 174.108081] __x64_sys_io_submit+0x1b7/0x580 [ 174.112887] do_syscall_64+0x1b9/0x820 [ 174.116945] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 174.122302] [ 174.123906] [ 174.123906] stack backtrace: [ 174.128383] CPU: 1 PID: 9954 Comm: syz-executor5 Not tainted 4.20.0-rc4+ #360 [ 174.135635] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 174.145072] Call Trace: [ 174.147659] dump_stack+0x244/0x39d [ 174.151286] ? dump_stack_print_info.cold.1+0x20/0x20 [ 174.156584] ? print_shortest_lock_dependencies.cold.55+0x18e/0x211 [ 174.163129] ? vprintk_func+0x85/0x181 [ 174.167020] check_usage.cold.58+0x6d5/0xad1 [ 174.171614] ? check_usage_forwards+0x3d0/0x3d0 [ 174.176293] ? __lock_acquire+0x62f/0x4c20 [ 174.180508] ? __switch_to_asm+0x34/0x70 [ 174.184556] ? lockdep_on+0x50/0x50 [ 174.188352] ? mark_held_locks+0x130/0x130 [ 174.192582] ? __lock_acquire+0x62f/0x4c20 [ 174.196809] ? trace_event_raw_event_lock_acquire+0x440/0x440 [ 174.202682] __lock_acquire+0x238a/0x4c20 [ 174.206915] ? __lock_acquire+0x238a/0x4c20 [ 174.211220] ? mark_held_locks+0x130/0x130 [ 174.215557] ? zap_class+0x640/0x640 [ 174.219265] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 174.224472] ? find_held_lock+0x36/0x1c0 [ 174.228522] ? add_wait_queue+0x1b9/0x2b0 [ 174.232652] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 174.237734] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 174.242828] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 174.247396] ? trace_hardirqs_on+0xbd/0x310 [ 174.251818] ? kasan_check_read+0x11/0x20 [ 174.255965] ? add_wait_queue+0x1b9/0x2b0 [ 174.260107] ? trace_hardirqs_off_caller+0x310/0x310 [ 174.265194] ? rcu_softirq_qs+0x20/0x20 [ 174.269159] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 174.274363] ? add_wait_queue+0x1b9/0x2b0 [ 174.278494] ? __wake_up_locked_key_bookmark+0x20/0x20 [ 174.283764] lock_acquire+0x1ed/0x520 [ 174.287544] ? aio_poll+0x760/0x1420 [ 174.291267] ? lock_release+0xa00/0xa00 [ 174.295223] ? kasan_check_read+0x11/0x20 [ 174.299351] ? do_raw_spin_lock+0x14f/0x350 [ 174.303650] ? __ia32_sys_eventfd+0x40/0x40 [ 174.307955] ? rwlock_bug.part.2+0x90/0x90 [ 174.312191] ? trace_hardirqs_on+0x310/0x310 [ 174.316595] ? __save_stack_trace+0x8d/0xf0 [ 174.320919] _raw_spin_lock+0x2d/0x40 [ 174.324704] ? aio_poll+0x760/0x1420 [ 174.328422] aio_poll+0x760/0x1420 [ 174.331945] ? free_ioctx_users+0x710/0x710 [ 174.336244] ? kmem_cache_alloc+0x12e/0x730 [ 174.340557] ? aio_setup_rw+0x170/0x170 [ 174.344515] ? zap_class+0x640/0x640 [ 174.348208] ? mark_held_locks+0x130/0x130 [ 174.352424] ? zap_class+0x640/0x640 [ 174.356127] ? find_held_lock+0x36/0x1c0 [ 174.360174] ? find_held_lock+0x36/0x1c0 [ 174.364278] ? __might_fault+0x12b/0x1e0 [ 174.368321] ? lock_downgrade+0x900/0x900 [ 174.372457] ? lock_release+0xa00/0xa00 [ 174.376421] ? perf_trace_sched_process_exec+0x860/0x860 [ 174.381963] ? kasan_check_read+0x11/0x20 [ 174.386110] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 174.391410] io_submit_one+0xa49/0xf80 [ 174.395282] ? io_submit_one+0xa49/0xf80 [ 174.399325] ? aio_poll+0x1420/0x1420 [ 174.403106] ? __might_fault+0x12b/0x1e0 [ 174.407145] ? lock_downgrade+0x900/0x900 [ 174.411394] ? perf_trace_sched_process_exec+0x860/0x860 [ 174.416832] __x64_sys_io_submit+0x1b7/0x580 [ 174.421239] ? __ia32_sys_io_destroy+0x580/0x580 [ 174.426125] ? trace_hardirqs_on+0xbd/0x310 [ 174.430431] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 174.435956] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 174.441319] ? trace_hardirqs_off_caller+0x310/0x310 [ 174.446415] do_syscall_64+0x1b9/0x820 [ 174.450287] ? __ia32_sys_io_destroy+0x580/0x580 [ 174.455188] ? do_syscall_64+0x1b9/0x820 [ 174.459241] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 174.464598] ? syscall_return_slowpath+0x5e0/0x5e0 [ 174.469512] ? trace_hardirqs_on_caller+0x310/0x310 [ 174.474528] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 174.479533] ? post_copy_siginfo_from_user.isra.25.part.26+0x250/0x250 [ 174.486182] ? __switch_to_asm+0x40/0x70 [ 174.490220] ? __switch_to_asm+0x34/0x70 [ 174.494268] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 174.499191] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 174.504358] RIP: 0033:0x457569 [ 174.507529] 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 [ 174.526409] RSP: 002b:00007f5b303b1c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 [ 174.534218] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 [ 174.541486] RDX: 0000000020000b00 RSI: 0000000000000001 RDI: 00007f5b303d4000 [ 174.548744] RBP: 000000000072c040 R08: 0000000000000000 R09: 0000000000000000 [ 174.556000] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5b303b26d4 [ 174.563264] R13: 00000000004be7ed R14: 00000000004ced68 R15: 00000000ffffffff 2018/12/03 09:37:43 executed programs: 466 [ 174.646101] kobject: 'loop0' (00000000865dc908): kobject_uevent_env [ 174.652652] kobject: 'loop0' (00000000865dc908): fill_kobj_path: path = '/devices/virtual/block/loop0' [ 174.674151] kobject: 'loop5' (00000000c4e670a8): kobject_uevent_env [ 174.680713] kobject: 'loop5' (00000000c4e670a8): fill_kobj_path: path = '/devices/virtual/block/loop5' [ 174.690545] kobject: 'loop3' (00000000563265db): kobject_uevent_env [ 174.698864] kobject: 'loop3' (00000000563265db): fill_kobj_path: path = '/devices/virtual/block/loop3' [ 174.709830] kobject: 'loop2' (000000002a6ee370): kobject_uevent_env [ 174.716831] kobject: 'loop2' (000000002a6ee370): fill_kobj_path: path = '/devices/virtual/block/loop2' [ 174.727313] kobject: 'loop1' (00000000e615a5c3): kobject_uevent_env [ 174.733936] kobject: 'loop1' (00000000e615a5c3): fill_kobj_path: path = '/devices/virtual/block/loop1' [ 174.743818] kobject: 'loop4' (00000000e5560d1a): kobject_uevent_env [ 174.750341] kobject: 'loop4' (00000000e5560d1a): fill_kobj_path: path = '/devices/virtual/block/loop4' [ 175.575265] kobject: 'loop0' (00000000865dc908): kobject_uevent_env [ 175.582436] kobject: 'loop0' (00000000865dc908): fill_kobj_path: path = '/devices/virtual/block/loop0' [ 175.596371] kobject: 'loop5' (00000000c4e670a8): kobject_uevent_env [ 175.602907] kobject: 'loop5' (00000000c4e670a8): fill_kobj_path: path = '/devices/virtual/block/loop5' [ 175.619014] kobject: 'loop2' (000000002a6ee370): kobject_uevent_env [ 175.626078] kobject: 'loop2' (000000002a6ee370): fill_kobj_path: path = '/devices/virtual/block/loop2' [ 175.637147] kobject: 'loop3' (00000000563265db): kobject_uevent_env [ 175.644452] kobject: 'loop3' (00000000563265db): fill_kobj_path: path = '/devices/virtual/block/loop3' [ 175.655459] kobject: 'loop4' (00000000e5560d1a): kobject_uevent_env [ 175.661868] kobject: 'loop4' (00000000e5560d1a): fill_kobj_path: path = '/devices/virtual/block/loop4' [ 175.672716] kobject: 'loop1' (00000000e615a5c3): kobject_uevent_env [ 175.680270] kobject: 'loop1' (00000000e615a5c3): fill_kobj_path: path = '/devices/virtual/block/loop1' [ 176.504974] kobject: 'loop0' (00000000865dc908): kobject_uevent_env [ 176.511439] kobject: 'loop0' (00000000865dc908): fill_kobj_path: path = '/devices/virtual/block/loop0' [ 176.535560] kobject: 'loop3' (00000000563265db): kobject_uevent_env [ 176.544055] kobject: 'loop3' (00000000563265db): fill_kobj_path: path = '/devices/virtual/block/loop3' [ 176.561446] kobject: 'loop5' (00000000c4e670a8): kobject_uevent_env [ 176.568536] kobject: 'loop5' (00000000c4e670a8): fill_kobj_path: path = '/devices/virtual/block/loop5' [ 176.579728] kobject: 'loop1' (00000000e615a5c3): kobject_uevent_env [ 176.586507] kobject: 'loop1' (00000000e615a5c3): fill_kobj_path: path = '/devices/virtual/block/loop1' [ 176.596396] kobject: 'loop2' (000000002a6ee370): kobject_uevent_env [ 176.602886] kobject: 'loop2' (000000002a6ee370): fill_kobj_path: path = '/devices/virtual/block/loop2' [ 176.612747] kobject: 'loop4' (00000000e5560d1a): kobject_uevent_env [ 176.619223] kobject: 'loop4' (00000000e5560d1a): fill_kobj_path: path = '/devices/virtual/block/loop4' [ 177.454956] kobject: 'loop0' (00000000865dc908): kobject_uevent_env [ 177.461425] kobject: 'loop0' (00000000865dc908): fill_kobj_path: path = '/devices/virtual/block/loop0' [ 177.475537] kobject: 'loop3' (00000000563265db): kobject_uevent_env [ 177.488469] kobject: 'loop3' (00000000563265db): fill_kobj_path: path = '/devices/virtual/block/loop3' [ 177.500968] kobject: 'loop2' (000000002a6ee370): kobject_uevent_env [ 177.516530] kobject: 'loop2' (000000002a6ee370): fill_kobj_path: path = '/devices/virtual/block/loop2' [ 177.527790] kobject: 'loop5' (00000000c4e670a8): kobject_uevent_env [ 177.534545] kobject: 'loop5' (00000000c4e670a8): fill_kobj_path: path = '/devices/virtual/block/loop5' [ 177.545796] kobject: 'loop1' (00000000e615a5c3): kobject_uevent_env [ 177.553152] kobject: 'loop1' (00000000e615a5c3): fill_kobj_path: path = '/devices/virtual/block/loop1' [ 177.563072] kobject: 'loop4' (00000000e5560d1a): kobject_uevent_env [ 177.569558] kobject: 'loop4' (00000000e5560d1a): fill_kobj_path: path = '/devices/virtual/block/loop4' [ 178.385597] kobject: 'loop0' (00000000865dc908): kobject_uevent_env [ 178.392091] kobject: 'loop0' (00000000865dc908): fill_kobj_path: path = '/devices/virtual/block/loop0' [ 178.406897] kobject: 'loop3' (00000000563265db): kobject_uevent_env [ 178.424589] kobject: 'loop3' (00000000563265db): fill_kobj_path: path = '/devices/virtual/block/loop3' [ 178.438985] kobject: 'loop2' (000000002a6ee370): kobject_uevent_env [ 178.446596] kobject: 'loop2' (000000002a6ee370): fill_kobj_path: path = '/devices/virtual/block/loop2' [ 178.457004] kobject: 'loop5' (00000000c4e670a8): kobject_uevent_env [ 178.463967] kobject: 'loop5' (00000000c4e670a8): fill_kobj_path: path = '/devices/virtual/block/loop5' [ 178.474309] kobject: 'loop1' (00000000e615a5c3): kobject_uevent_env [ 178.480764] kobject: 'loop1' (00000000e615a5c3): fill_kobj_path: path = '/devices/virtual/block/loop1' [ 178.491059] kobject: 'loop4' (00000000e5560d1a): kobject_uevent_env [ 178.498240] kobject: 'loop4' (00000000e5560d1a): fill_kobj_path: path = '/devices/virtual/block/loop4' [ 179.305596] kobject: 'loop5' (00000000c4e670a8): kobject_uevent_env [ 179.313294] kobject: 'loop5' (00000000c4e670a8): fill_kobj_path: path = '/devices/virtual/block/loop5' [ 179.327486] kobject: 'loop0' (00000000865dc908): kobject_uevent_env [ 179.338579] kobject: 'loop0' (00000000865dc908): fill_kobj_path: path = '/devices/virtual/block/loop0' [ 179.360513] kobject: 'loop3' (00000000563265db): kobject_uevent_env [ 179.367061] kobject: 'loop3' (00000000563265db): fill_kobj_path: path = '/devices/virtual/block/loop3' [ 179.376983] kobject: 'loop2' (000000002a6ee370): kobject_uevent_env [ 179.383482] kobject: 'loop2' (000000002a6ee370): fill_kobj_path: path = '/devices/virtual/block/loop2' [ 179.394284] kobject: 'loop1' (00000000e615a5c3): kobject_uevent_env [ 179.400753] kobject: 'loop1' (00000000e615a5c3): fill_kobj_path: path = '/devices/virtual/block/loop1' [ 179.413333] kobject: 'loop4' (00000000e5560d1a): kobject_uevent_env [ 179.420014] kobject: 'loop4' (00000000e5560d1a): fill_kobj_path: path = '/devices/virtual/block/loop4'