[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 30.247329] kauditd_printk_skb: 9 callbacks suppressed [ 30.247340] audit: type=1400 audit(1542764031.231:35): avc: denied { map } for pid=6046 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.81' (ECDSA) to the list of known hosts. [ 47.778501] audit: type=1400 audit(1542764048.761:36): avc: denied { map } for pid=6062 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=16480 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2018/11/21 01:34:09 parsed 1 programs [ 48.301498] audit: type=1400 audit(1542764049.291:37): avc: denied { map } for pid=6062 comm="syz-execprog" path="/sys/kernel/debug/kcov" dev="debugfs" ino=1118 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:debugfs_t:s0 tclass=file permissive=1 2018/11/21 01:34:11 executed programs: 0 [ 50.377051] IPVS: ftp: loaded support on port[0] = 21 [ 50.388234] IPVS: ftp: loaded support on port[0] = 21 [ 50.410748] IPVS: ftp: loaded support on port[0] = 21 [ 50.437834] IPVS: ftp: loaded support on port[0] = 21 [ 50.444335] IPVS: ftp: loaded support on port[0] = 21 [ 50.462751] IPVS: ftp: loaded support on port[0] = 21 [ 51.105610] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.113890] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.121370] device bridge_slave_0 entered promiscuous mode [ 51.165427] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.177728] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.184894] device bridge_slave_0 entered promiscuous mode [ 51.193111] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.200479] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.207457] device bridge_slave_1 entered promiscuous mode [ 51.218335] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.225947] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.233682] device bridge_slave_0 entered promiscuous mode [ 51.241627] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.247954] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.255123] device bridge_slave_0 entered promiscuous mode [ 51.267948] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.275769] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.283261] device bridge_slave_1 entered promiscuous mode [ 51.293528] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 51.305223] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.316236] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.323835] device bridge_slave_0 entered promiscuous mode [ 51.331260] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.337784] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.344881] device bridge_slave_1 entered promiscuous mode [ 51.351454] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.357788] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.364980] device bridge_slave_1 entered promiscuous mode [ 51.372467] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 51.382771] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 51.392537] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.398888] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.408103] device bridge_slave_1 entered promiscuous mode [ 51.416384] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 51.433733] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 51.446816] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 51.468214] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 51.481080] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 51.490595] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 51.512128] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 51.560743] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.567193] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.582424] device bridge_slave_0 entered promiscuous mode [ 51.627810] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 51.636523] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.645135] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.652871] device bridge_slave_1 entered promiscuous mode [ 51.676707] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 51.691382] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 51.700484] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 51.712954] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 51.725719] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 51.746366] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 51.761042] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 51.777047] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 51.788562] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 51.800411] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 51.842184] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 51.902484] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 51.909614] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 51.940068] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 51.948659] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 51.955965] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 51.964533] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 51.979391] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 51.996075] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 52.004777] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 52.015154] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 52.033519] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 52.089323] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 52.101851] team0: Port device team_slave_0 added [ 52.131758] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 52.154568] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 52.168616] team0: Port device team_slave_0 added [ 52.174983] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 52.186674] team0: Port device team_slave_0 added [ 52.195507] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 52.207572] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 52.215982] team0: Port device team_slave_0 added [ 52.222084] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 52.232406] team0: Port device team_slave_1 added [ 52.239607] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 52.254699] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 52.262254] team0: Port device team_slave_1 added [ 52.270295] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 52.277325] team0: Port device team_slave_0 added [ 52.294796] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 52.305674] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 52.317584] team0: Port device team_slave_1 added [ 52.324276] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 52.341580] team0: Port device team_slave_1 added [ 52.361302] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 52.369006] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 52.385186] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 52.393262] team0: Port device team_slave_1 added [ 52.401334] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 52.413132] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 52.425993] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 52.451194] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 52.459149] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 52.466891] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 52.486490] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 52.499281] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 52.513033] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 52.523439] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 52.532532] team0: Port device team_slave_0 added [ 52.539570] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 52.547536] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 52.560040] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 52.567924] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 52.575690] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 52.583422] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 52.593282] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 52.602912] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 52.612356] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 52.622749] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 52.635227] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 52.659791] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 52.667538] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 52.675470] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 52.683172] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 52.690857] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 52.700773] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 52.707827] team0: Port device team_slave_1 added [ 52.714947] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 52.729984] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 52.738278] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 52.748288] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 52.769119] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 52.777773] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 52.787572] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 52.801681] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 52.814423] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 52.823146] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 52.833053] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 52.844616] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 52.857893] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 52.876023] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 52.930248] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 52.945526] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 52.958750] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 52.971602] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 52.986410] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 52.996605] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 53.327785] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.334375] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.341412] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.347772] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.356089] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 53.406279] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.412640] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.419271] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.425604] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.435966] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 53.454187] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.460692] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.467317] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.473710] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.481665] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 53.541163] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.547620] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.554223] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.560611] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.573972] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 53.591824] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.598154] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.604767] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.611135] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.620273] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 53.704404] bridge0: port 2(bridge_slave_1) entered blocking state [ 53.710858] bridge0: port 2(bridge_slave_1) entered forwarding state [ 53.717467] bridge0: port 1(bridge_slave_0) entered blocking state [ 53.723851] bridge0: port 1(bridge_slave_0) entered forwarding state [ 53.732261] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 53.909236] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 53.916588] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 53.937780] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 53.945957] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 53.953338] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 53.960728] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 55.659197] 8021q: adding VLAN 0 to HW filter on device bond0 [ 55.676403] 8021q: adding VLAN 0 to HW filter on device bond0 [ 55.835415] 8021q: adding VLAN 0 to HW filter on device bond0 [ 55.859959] 8021q: adding VLAN 0 to HW filter on device bond0 [ 55.920267] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 55.941564] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 55.969958] 8021q: adding VLAN 0 to HW filter on device bond0 [ 56.009871] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 56.038146] 8021q: adding VLAN 0 to HW filter on device bond0 [ 56.071843] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 56.108191] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 56.119891] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 56.126817] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 56.200838] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 56.210080] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 56.223196] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 56.242329] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 56.250486] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 56.259763] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 56.267132] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 56.282911] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 56.295853] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 56.303045] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 56.312710] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 56.400500] 8021q: adding VLAN 0 to HW filter on device team0 [ 56.455908] 8021q: adding VLAN 0 to HW filter on device team0 [ 56.466561] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 56.474085] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 56.482473] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 56.500778] 8021q: adding VLAN 0 to HW filter on device team0 [ 56.512222] 8021q: adding VLAN 0 to HW filter on device team0 [ 56.567353] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 56.584929] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 56.594800] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 56.728145] 8021q: adding VLAN 0 to HW filter on device team0 [ 56.801904] 8021q: adding VLAN 0 to HW filter on device team0 [ 57.597426] audit: type=1400 audit(1542764058.581:38): avc: denied { associate } for pid=6090 comm="syz-executor4" name="syz4" scontext=unconfined_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=filesystem permissive=1 2018/11/21 01:34:19 executed programs: 6 2018/11/21 01:34:25 executed programs: 42 2018/11/21 01:34:30 executed programs: 77 2018/11/21 01:34:35 executed programs: 108 2018/11/21 01:34:41 executed programs: 144 2018/11/21 01:34:46 executed programs: 179 2018/11/21 01:34:51 executed programs: 213 [ 90.781287] [ 90.783135] ===================================================== [ 90.789336] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 90.796057] 4.20.0-rc3+ #122 Not tainted [ 90.800088] ----------------------------------------------------- [ 90.806292] syz-executor0/8707 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire: [ 90.813448] 00000000bf276aed (&ctx->fd_wqh){....}, at: aio_poll+0x760/0x1420 [ 90.820621] [ 90.820621] and this task is already holding: [ 90.826572] 000000001ffee7c3 (&(&ctx->ctx_lock)->rlock){..-.}, at: aio_poll+0x738/0x1420 [ 90.834784] which would create a new lock dependency: [ 90.839944] (&(&ctx->ctx_lock)->rlock){..-.} -> (&ctx->fd_wqh){....} [ 90.846499] [ 90.846499] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 90.854653] (&(&ctx->ctx_lock)->rlock){..-.} [ 90.854659] [ 90.854659] ... which became SOFTIRQ-irq-safe at: [ 90.865427] lock_acquire+0x1ed/0x520 [ 90.869288] _raw_spin_lock_irq+0x61/0x80 [ 90.873516] free_ioctx_users+0xbc/0x710 [ 90.877642] percpu_ref_switch_to_atomic_rcu+0x563/0x730 [ 90.883154] rcu_process_callbacks+0x100a/0x1ac0 [ 90.888173] __do_softirq+0x308/0xb7e [ 90.892033] irq_exit+0x17f/0x1c0 [ 90.895542] smp_apic_timer_interrupt+0x1cb/0x760 [ 90.900443] apic_timer_interrupt+0xf/0x20 [ 90.904740] native_safe_halt+0x6/0x10 [ 90.908687] default_idle+0xbf/0x490 [ 90.912458] arch_cpu_idle+0x10/0x20 [ 90.916248] default_idle_call+0x6d/0x90 [ 90.920376] do_idle+0x49b/0x5c0 [ 90.923801] cpu_startup_entry+0x18/0x20 [ 90.928026] rest_init+0x243/0x372 [ 90.931823] arch_call_rest_init+0xe/0x1b [ 90.936033] start_kernel+0x9f0/0xa2b [ 90.939897] x86_64_start_reservations+0x2e/0x30 [ 90.944717] x86_64_start_kernel+0x76/0x79 [ 90.949014] secondary_startup_64+0xa4/0xb0 [ 90.953394] [ 90.953394] to a SOFTIRQ-irq-unsafe lock: [ 90.958990] (&ctx->fault_pending_wqh){+.+.} [ 90.958996] [ 90.958996] ... which became SOFTIRQ-irq-unsafe at: [ 90.969831] ... [ 90.969840] lock_acquire+0x1ed/0x520 [ 90.975561] _raw_spin_lock+0x2d/0x40 [ 90.979425] userfaultfd_release+0x63e/0x8d0 [ 90.983894] __fput+0x385/0xa30 [ 90.987234] ____fput+0x15/0x20 [ 90.990572] task_work_run+0x1e8/0x2a0 [ 90.994525] exit_to_usermode_loop+0x318/0x380 [ 90.999167] do_syscall_64+0x6be/0x820 [ 91.003126] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 91.008369] [ 91.008369] other info that might help us debug this: [ 91.008369] [ 91.016628] Chain exists of: [ 91.016628] &(&ctx->ctx_lock)->rlock --> &ctx->fd_wqh --> &ctx->fault_pending_wqh [ 91.016628] [ 91.028743] Possible interrupt unsafe locking scenario: [ 91.028743] [ 91.035644] CPU0 CPU1 [ 91.040278] ---- ---- [ 91.044920] lock(&ctx->fault_pending_wqh); [ 91.049299] local_irq_disable(); [ 91.055322] lock(&(&ctx->ctx_lock)->rlock); [ 91.062303] lock(&ctx->fd_wqh); [ 91.068243] [ 91.070971] lock(&(&ctx->ctx_lock)->rlock); [ 91.075611] [ 91.075611] *** DEADLOCK *** [ 91.075611] [ 91.081645] 1 lock held by syz-executor0/8707: [ 91.086195] #0: 000000001ffee7c3 (&(&ctx->ctx_lock)->rlock){..-.}, at: aio_poll+0x738/0x1420 [ 91.094848] [ 91.094848] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 91.103840] -> (&(&ctx->ctx_lock)->rlock){..-.} { [ 91.108661] IN-SOFTIRQ-W at: [ 91.111936] lock_acquire+0x1ed/0x520 [ 91.117365] _raw_spin_lock_irq+0x61/0x80 [ 91.123166] free_ioctx_users+0xbc/0x710 [ 91.128854] percpu_ref_switch_to_atomic_rcu+0x563/0x730 [ 91.135928] rcu_process_callbacks+0x100a/0x1ac0 [ 91.142312] __do_softirq+0x308/0xb7e [ 91.147735] irq_exit+0x17f/0x1c0 [ 91.152831] smp_apic_timer_interrupt+0x1cb/0x760 [ 91.159298] apic_timer_interrupt+0xf/0x20 [ 91.165161] native_safe_halt+0x6/0x10 [ 91.170673] default_idle+0xbf/0x490 [ 91.176191] arch_cpu_idle+0x10/0x20 [ 91.181532] default_idle_call+0x6d/0x90 [ 91.187217] do_idle+0x49b/0x5c0 [ 91.192258] cpu_startup_entry+0x18/0x20 [ 91.197945] rest_init+0x243/0x372 [ 91.203128] arch_call_rest_init+0xe/0x1b [ 91.208899] start_kernel+0x9f0/0xa2b [ 91.214323] x86_64_start_reservations+0x2e/0x30 [ 91.220701] x86_64_start_kernel+0x76/0x79 [ 91.226556] secondary_startup_64+0xa4/0xb0 [ 91.232494] INITIAL USE at: [ 91.235661] lock_acquire+0x1ed/0x520 [ 91.241008] _raw_spin_lock_irq+0x61/0x80 [ 91.246790] free_ioctx_users+0xbc/0x710 [ 91.252395] percpu_ref_switch_to_atomic_rcu+0x563/0x730 [ 91.259614] rcu_process_callbacks+0x100a/0x1ac0 [ 91.265906] __do_softirq+0x308/0xb7e [ 91.271240] irq_exit+0x17f/0x1c0 [ 91.276239] smp_apic_timer_interrupt+0x1cb/0x760 [ 91.282622] apic_timer_interrupt+0xf/0x20 [ 91.288389] native_safe_halt+0x6/0x10 [ 91.293812] default_idle+0xbf/0x490 [ 91.299059] arch_cpu_idle+0x10/0x20 [ 91.304308] default_idle_call+0x6d/0x90 [ 91.309921] do_idle+0x49b/0x5c0 [ 91.314822] cpu_startup_entry+0x18/0x20 [ 91.320418] rest_init+0x243/0x372 [ 91.325491] arch_call_rest_init+0xe/0x1b [ 91.331169] start_kernel+0x9f0/0xa2b [ 91.336505] x86_64_start_reservations+0x2e/0x30 [ 91.342794] x86_64_start_kernel+0x76/0x79 [ 91.348563] secondary_startup_64+0xa4/0xb0 [ 91.354420] } [ 91.356216] ... key at: [] __key.51004+0x0/0x40 [ 91.362941] ... acquired at: [ 91.366019] lock_acquire+0x1ed/0x520 [ 91.369974] _raw_spin_lock+0x2d/0x40 [ 91.373919] aio_poll+0x760/0x1420 [ 91.377607] io_submit_one+0xa49/0xf80 [ 91.381640] __x64_sys_io_submit+0x1b7/0x580 [ 91.386201] do_syscall_64+0x1b9/0x820 [ 91.390247] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 91.395584] [ 91.397197] [ 91.397197] the dependencies between the lock to be acquired [ 91.397200] and SOFTIRQ-irq-unsafe lock: [ 91.408849] -> (&ctx->fault_pending_wqh){+.+.} { [ 91.413668] HARDIRQ-ON-W at: [ 91.417012] lock_acquire+0x1ed/0x520 [ 91.422611] _raw_spin_lock+0x2d/0x40 [ 91.428205] userfaultfd_release+0x63e/0x8d0 [ 91.434413] __fput+0x385/0xa30 [ 91.439501] ____fput+0x15/0x20 [ 91.444578] task_work_run+0x1e8/0x2a0 [ 91.450262] exit_to_usermode_loop+0x318/0x380 [ 91.456639] do_syscall_64+0x6be/0x820 [ 91.462320] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 91.469299] SOFTIRQ-ON-W at: [ 91.472638] lock_acquire+0x1ed/0x520 [ 91.478232] _raw_spin_lock+0x2d/0x40 [ 91.483826] userfaultfd_release+0x63e/0x8d0 [ 91.490028] __fput+0x385/0xa30 [ 91.495102] ____fput+0x15/0x20 [ 91.500178] task_work_run+0x1e8/0x2a0 [ 91.505862] exit_to_usermode_loop+0x318/0x380 [ 91.512237] do_syscall_64+0x6be/0x820 [ 91.517921] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 91.524908] INITIAL USE at: [ 91.528175] lock_acquire+0x1ed/0x520 [ 91.533686] _raw_spin_lock+0x2d/0x40 [ 91.539192] userfaultfd_ctx_read+0x4f3/0x2180 [ 91.545481] userfaultfd_read+0x1e2/0x2c0 [ 91.551337] __vfs_read+0x117/0x9b0 [ 91.556669] vfs_read+0x17f/0x3c0 [ 91.561942] ksys_read+0x101/0x260 [ 91.567197] __x64_sys_read+0x73/0xb0 [ 91.572706] do_syscall_64+0x1b9/0x820 [ 91.578440] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 91.585426] } [ 91.587297] ... key at: [] __key.44608+0x0/0x40 [ 91.594102] ... acquired at: [ 91.597268] _raw_spin_lock+0x2d/0x40 [ 91.601222] userfaultfd_ctx_read+0x4f3/0x2180 [ 91.606271] userfaultfd_read+0x1e2/0x2c0 [ 91.610574] __vfs_read+0x117/0x9b0 [ 91.614350] vfs_read+0x17f/0x3c0 [ 91.617949] ksys_read+0x101/0x260 [ 91.621638] __x64_sys_read+0x73/0xb0 [ 91.625586] do_syscall_64+0x1b9/0x820 [ 91.629616] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 91.634947] [ 91.636546] -> (&ctx->fd_wqh){....} { [ 91.640318] INITIAL USE at: [ 91.643700] lock_acquire+0x1ed/0x520 [ 91.649364] _raw_spin_lock_irq+0x61/0x80 [ 91.655286] userfaultfd_ctx_read+0x2e4/0x2180 [ 91.661406] userfaultfd_read+0x1e2/0x2c0 [ 91.667113] __vfs_read+0x117/0x9b0 [ 91.672274] vfs_read+0x17f/0x3c0 [ 91.677260] ksys_read+0x101/0x260 [ 91.682333] __x64_sys_read+0x73/0xb0 [ 91.687869] do_syscall_64+0x1b9/0x820 [ 91.693298] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 91.700020] } [ 91.701799] ... key at: [] __key.44611+0x0/0x40 [ 91.708645] ... acquired at: [ 91.711742] lock_acquire+0x1ed/0x520 [ 91.715688] _raw_spin_lock+0x2d/0x40 [ 91.719640] aio_poll+0x760/0x1420 [ 91.723324] io_submit_one+0xa49/0xf80 [ 91.727354] __x64_sys_io_submit+0x1b7/0x580 [ 91.731917] do_syscall_64+0x1b9/0x820 [ 91.735952] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 91.741286] [ 91.742884] [ 91.742884] stack backtrace: [ 91.747356] CPU: 1 PID: 8707 Comm: syz-executor0 Not tainted 4.20.0-rc3+ #122 [ 91.754599] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 91.763921] Call Trace: [ 91.766484] dump_stack+0x244/0x39d [ 91.770084] ? dump_stack_print_info.cold.1+0x20/0x20 [ 91.775257] ? print_shortest_lock_dependencies.cold.55+0x18e/0x211 [ 91.781635] ? vprintk_func+0x85/0x181 [ 91.785494] check_usage.cold.58+0x6d5/0xad1 [ 91.789881] ? check_usage_forwards+0x3d0/0x3d0 [ 91.794537] ? __lock_acquire+0x62f/0x4c20 [ 91.798749] ? __switch_to_asm+0x34/0x70 [ 91.802783] ? lockdep_on+0x50/0x50 [ 91.806383] ? mark_held_locks+0x130/0x130 [ 91.810588] ? __lock_acquire+0x62f/0x4c20 [ 91.814795] ? trace_event_raw_event_lock_acquire+0x440/0x440 [ 91.820656] __lock_acquire+0x238a/0x4c20 [ 91.824794] ? __lock_acquire+0x238a/0x4c20 [ 91.829091] ? mark_held_locks+0x130/0x130 [ 91.833296] ? zap_class+0x640/0x640 [ 91.836981] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 91.842062] ? find_held_lock+0x36/0x1c0 [ 91.846099] ? add_wait_queue+0x1b9/0x2b0 [ 91.850392] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 91.855465] ? _raw_spin_unlock_irqrestore+0x82/0xd0 [ 91.860539] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 91.865094] ? trace_hardirqs_on+0xbd/0x310 [ 91.869659] ? kasan_check_read+0x11/0x20 [ 91.873785] ? add_wait_queue+0x1b9/0x2b0 [ 91.878070] ? trace_hardirqs_off_caller+0x310/0x310 [ 91.883173] ? rcu_softirq_qs+0x20/0x20 [ 91.887125] ? _raw_spin_unlock_irqrestore+0x6d/0xd0 [ 91.892204] ? add_wait_queue+0x1b9/0x2b0 [ 91.896332] ? __wake_up_locked_key_bookmark+0x20/0x20 [ 91.901581] lock_acquire+0x1ed/0x520 [ 91.905353] ? aio_poll+0x760/0x1420 [ 91.909044] ? lock_release+0xa00/0xa00 [ 91.912992] ? kasan_check_read+0x11/0x20 [ 91.917112] ? do_raw_spin_lock+0x14f/0x350 [ 91.921407] ? __ia32_sys_eventfd+0x40/0x40 [ 91.925705] ? rwlock_bug.part.2+0x90/0x90 [ 91.929910] ? trace_hardirqs_on+0x310/0x310 [ 91.934308] ? __save_stack_trace+0x8d/0xf0 [ 91.938602] _raw_spin_lock+0x2d/0x40 [ 91.942373] ? aio_poll+0x760/0x1420 [ 91.946057] aio_poll+0x760/0x1420 [ 91.949574] ? free_ioctx_users+0x710/0x710 [ 91.953872] ? kmem_cache_alloc+0x12e/0x730 [ 91.958167] ? aio_setup_rw+0x170/0x170 [ 91.962114] ? zap_class+0x640/0x640 [ 91.965802] ? mark_held_locks+0x130/0x130 [ 91.970009] ? zap_class+0x640/0x640 [ 91.973707] ? find_held_lock+0x36/0x1c0 [ 91.977743] ? find_held_lock+0x36/0x1c0 [ 91.981781] ? __might_fault+0x12b/0x1e0 [ 91.985815] ? lock_downgrade+0x900/0x900 [ 91.989934] ? lock_release+0xa00/0xa00 [ 91.993882] ? perf_trace_sched_process_exec+0x860/0x860 [ 91.999304] ? kasan_check_read+0x11/0x20 [ 92.003424] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170 [ 92.008681] io_submit_one+0xa49/0xf80 [ 92.012550] ? io_submit_one+0xa49/0xf80 [ 92.016587] ? aio_poll+0x1420/0x1420 [ 92.020360] ? __might_fault+0x12b/0x1e0 [ 92.024392] ? lock_downgrade+0x900/0x900 [ 92.028512] ? perf_trace_sched_process_exec+0x860/0x860 [ 92.033943] __x64_sys_io_submit+0x1b7/0x580 [ 92.038322] ? __ia32_sys_io_destroy+0x580/0x580 [ 92.043051] ? trace_hardirqs_on+0xbd/0x310 [ 92.047348] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 92.052856] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 92.058191] ? trace_hardirqs_off_caller+0x310/0x310 [ 92.063274] do_syscall_64+0x1b9/0x820 [ 92.067135] ? __ia32_sys_io_destroy+0x580/0x580 [ 92.071863] ? do_syscall_64+0x1b9/0x820 [ 92.075896] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 92.081235] ? syscall_return_slowpath+0x5e0/0x5e0 [ 92.086140] ? trace_hardirqs_on_caller+0x310/0x310 [ 92.091133] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 92.096129] ? post_copy_siginfo_from_user.isra.25.part.26+0x250/0x250 [ 92.102768] ? __switch_to_asm+0x40/0x70 [ 92.106811] ? __switch_to_asm+0x34/0x70 [ 92.110846] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 92.115662] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 92.121003] RIP: 0033:0x457569 [ 92.124213] 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 [ 92.143174] RSP: 002b:00007fd5e5135c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 [ 92.151037] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 [ 92.158283] RDX: 0000000020000b00 RSI: 0000000000000001 RDI: 00007fd5e5158000 [ 92.165647] RBP: 000000000072c040 R08: 0000000000000000 R09: 0000000000000000 [ 92.172898] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd5e51366d4 [ 92.180402] R13: 00000000004be7ed R14: 00000000004ced68 R15: 00000000ffffffff [ 92.272917] kobject: 'loop4' (0000000080cf1901): kobject_uevent_env [ 92.279775] kobject: 'loop4' (0000000080cf1901): fill_kobj_path: path = '/devices/virtual/block/loop4' [ 92.292223] kobject: 'loop1' (00000000ae979820): kobject_uevent_env [ 92.299683] kobject: 'loop1' (00000000ae979820): fill_kobj_path: path = '/devices/virtual/block/loop1' [ 92.313974] kobject: 'loop0' (000000004a2c7ffd): kobject_uevent_env [ 92.322087] kobject: 'loop0' (000000004a2c7ffd): fill_kobj_path: path = '/devices/virtual/block/loop0' [ 92.332207] kobject: 'loop3' (00000000f996c7e0): kobject_uevent_env [ 92.338614] kobject: 'loop3' (00000000f996c7e0): fill_kobj_path: path = '/devices/virtual/block/loop3' [ 92.348566] kobject: 'loop2' (000000007e9f7fcf): kobject_uevent_env [ 92.355067] kobject: 'loop2' (000000007e9f7fcf): fill_kobj_path: path = '/devices/virtual/block/loop2' [ 92.365176] kobject: 'loop5' (000000006a800e09): kobject_uevent_env [ 92.375525] kobject: 'loop5' (000000006a800e09): fill_kobj_path: path = '/devices/virtual/block/loop5' [ 93.201646] kobject: 'loop4' (0000000080cf1901): kobject_uevent_env [ 93.208220] kobject: 'loop4' (0000000080cf1901): fill_kobj_path: path = '/devices/virtual/block/loop4' [ 93.224000] kobject: 'loop1' (00000000ae979820): kobject_uevent_env [ 93.232362] kobject: 'loop1' (00000000ae979820): fill_kobj_path: path = '/devices/virtual/block/loop1' [ 93.242341] kobject: 'loop0' (000000004a2c7ffd): kobject_uevent_env [ 93.248791] kobject: 'loop0' (000000004a2c7ffd): fill_kobj_path: path = '/devices/virtual/block/loop0' [ 93.263598] kobject: 'loop3' (00000000f996c7e0): kobject_uevent_env [ 93.270384] kobject: 'loop3' (00000000f996c7e0): fill_kobj_path: path = '/devices/virtual/block/loop3' [ 93.280234] kobject: 'loop5' (000000006a800e09): kobject_uevent_env [ 93.286671] kobject: 'loop5' (000000006a800e09): fill_kobj_path: path = '/devices/virtual/block/loop5' [ 93.296390] kobject: 'loop2' (000000007e9f7fcf): kobject_uevent_env [ 93.302829] kobject: 'loop2' (000000007e9f7fcf): fill_kobj_path: path = '/devices/virtual/block/loop2' [ 94.131926] kobject: 'loop4' (0000000080cf1901): kobject_uevent_env [ 94.139193] kobject: 'loop4' (0000000080cf1901): fill_kobj_path: path = '/devices/virtual/block/loop4' [ 94.162253] kobject: 'loop0' (000000004a2c7ffd): kobject_uevent_env [ 94.168915] kobject: 'loop0' (000000004a2c7ffd): fill_kobj_path: path = '/devices/virtual/block/loop0' [ 94.178884] kobject: 'loop1' (00000000ae979820): kobject_uevent_env [ 94.187060] kobject: 'loop1' (00000000ae979820): fill_kobj_path: path = '/devices/virtual/block/loop1' [ 94.200614] kobject: 'loop2' (000000007e9f7fcf): kobject_uevent_env [ 94.207918] kobject: 'loop2' (000000007e9f7fcf): fill_kobj_path: path = '/devices/virtual/block/loop2' [ 94.220215] kobject: 'loop3' (00000000f996c7e0): kobject_uevent_env [ 94.226697] kobject: 'loop3' (00000000f996c7e0): fill_kobj_path: path = '/devices/virtual/block/loop3' [ 94.236684] kobject: 'loop5' (000000006a800e09): kobject_uevent_env [ 94.243399] kobject: 'loop5' (000000006a800e09): fill_kobj_path: path = '/devices/virtual/block/loop5' [ 95.061438] kobject: 'loop4' (0000000080cf1901): kobject_uevent_env [ 95.069002] kobject: 'loop4' (0000000080cf1901): fill_kobj_path: path = '/devices/virtual/block/loop4' [ 95.106120] kobject: 'loop0' (000000004a2c7ffd): kobject_uevent_env [ 95.120972] kobject: 'loop0' (000000004a2c7ffd): fill_kobj_path: path = '/devices/virtual/block/loop0' [ 95.132013] kobject: 'loop1' (00000000ae979820): kobject_uevent_env [ 95.138470] kobject: 'loop1' (00000000ae979820): fill_kobj_path: path = '/devices/virtual/block/loop1' [ 95.148818] kobject: 'loop3' (00000000f996c7e0): kobject_uevent_env [ 95.155750] kobject: 'loop3' (00000000f996c7e0): fill_kobj_path: path = '/devices/virtual/block/loop3' [ 95.165654] kobject: 'loop2' (000000007e9f7fcf): kobject_uevent_env [ 95.172156] kobject: 'loop2' (000000007e9f7fcf): fill_kobj_path: path = '/devices/virtual/block/loop2' [ 95.181937] kobject: 'loop5' (000000006a800e09): kobject_uevent_env [ 95.188370] kobject: 'loop5' (000000006a800e09): fill_kobj_path: path = '/devices/virtual/block/loop5' 2018/11/21 01:34:56 executed programs: 239 [ 95.992442] kobject: 'loop4' (0000000080cf1901): kobject_uevent_env [ 95.998983] kobject: 'loop4' (0000000080cf1901): fill_kobj_path: path = '/devices/virtual/block/loop4' [ 96.051033] kobject: 'loop3' (00000000f996c7e0): kobject_uevent_env [ 96.061642] kobject: 'loop3' (00000000f996c7e0): fill_kobj_path: path = '/devices/virtual/block/loop3' [ 96.071858] kobject: 'loop0' (000000004a2c7ffd): kobject_uevent_env [ 96.078331] kobject: 'loop0' (000000004a2c7ffd): fill_kobj_path: path = '/devices/virtual/block/loop0' [ 96.088145] kobject: 'loop1' (00000000ae979820): kobject_uevent_env [ 96.095186] kobject: 'loop1' (00000000ae979820): fill_kobj_path: path = '/devices/virtual/block/loop1' [ 96.105171] kobject: 'loop2' (000000007e9f7fcf): kobject_uevent_env [ 96.116959] kobject: 'loop2' (000000007e9f7fcf): fill_kobj_path: path = '/devices/virtual/block/loop2' [ 96.126751] kobject: 'loop5' (000000006a800e09): kobject_uevent_env [ 96.133220] kobject: 'loop5' (000000006a800e09): fill_kobj_path: path = '/devices/virtual/block/loop5' [ 96.921979] kobject: 'loop0' (000000004a2c7ffd): kobject_uevent_env [ 96.929172] kobject: 'loop0' (000000004a2c7ffd): fill_kobj_path: path = '/devices/virtual/block/loop0' [ 96.943505] kobject: 'loop4' (0000000080cf1901): kobject_uevent_env [ 96.951584] kobject: 'loop4' (0000000080cf1901): fill_kobj_path: path = '/devices/virtual/block/loop4' [ 96.963462] kobject: 'loop3' (00000000f996c7e0): kobject_uevent_env [ 96.980781] kobject: 'loop3' (00000000f996c7e0): fill_kobj_path: path = '/devices/virtual/block/loop3' [ 96.991276] kobject: 'loop1' (00000000ae979820): kobject_uevent_env [ 96.997969] kobject: 'loop1' (00000000ae979820): fill_kobj_path: path = '/devices/virtual/block/loop1' [ 97.008027] kobject: 'loop2' (000000007e9f7fcf): kobject_uevent_env [ 97.014505] kobject: 'loop2' (000000007e9f7fcf): fill_kobj_path: path = '/devices/virtual/block/loop2' [ 97.024293] kobject: 'loop5' (000000006a800e09): kobject_uevent_env [ 97.030766] kobject: 'loop5' (000000006a800e09): fill_kobj_path: path = '/devices/virtual/block/loop5' [ 97.851631] kobject: 'loop1' (00000000ae979820): kobject_uevent_env [ 97.858976] kobject: 'loop1' (00000000ae979820): fill_kobj_path: path = '/devices/virtual/block/loop1' [ 97.873425] kobject: 'loop4' (0000000080cf1901): kobject_uevent_env [ 97.886382] kobject: 'loop4' (0000000080cf1901): fill_kobj_path: path = '/devices/virtual/block/loop4' [ 97.897193] kobject: 'loop0' (000000004a2c7ffd): kobject_uevent_env [ 97.904988] kobject: 'loop0' (000000004a2c7ffd): fill_kobj_path: path = '/devices/virtual/block/loop0' [ 97.920985] kobject: 'loop3' (00000000f996c7e0): kobject_uevent_env [ 97.930025] kobject: 'loop3' (00000000f996c7e0): fill_kobj_path: path = '/devices/virtual/block/loop3' [ 97.939870] kobject: 'loop2' (000000007e9f7fcf): kobject_uevent_env [ 97.946287] kobject: 'loop2' (000000007e9f7fcf): fill_kobj_path: path = '/devices/virtual/block/loop2' [ 97.956688] kobject: 'loop5' (000000006a800e09): kobject_uevent_env [ 97.967367] kobject: 'loop5' (000000006a800e09): fill_kobj_path: path = '/devices/virtual/block/loop5' [ 98.781870] kobject: 'loop1' (00000000ae979820): kobject_uevent_env [ 98.788470] kobject: 'loop1' (00000000ae979820): fill_kobj_path: path = '/devices/virtual/block/loop1' [ 98.803653] kobject: 'loop2' (000000007e9f7fcf): kobject_uevent_env [ 98.811692] kobject: 'loop2' (000000007e9f7fcf): fill_kobj_path: path = '/devices/virtual/block/loop2' [ 98.823997] kobject: 'loop4' (0000000080cf1901): kobject_uevent_env [ 98.833204] kobject: 'loop4' (0000000080cf1901): fill_kobj_path: path = '/devices/virtual/block/loop4' [ 98.848294] kobject: 'loop0' (000000004a2c7ffd): kobject_uevent_env [ 98.857559] kobject: 'loop0' (000000004a2c7ffd): fill_kobj_path: path = '/devices/virtual/block/loop0' [ 98.867695] kobject: 'loop3' (00000000f996c7e0): kobject_uevent_env [ 98.874197] kobject: 'loop3' (00000000f996c7e0): fill_kobj_path: path = '/devices/virtual/block/loop3' [ 98.884148] kobject: 'loop5' (000000006a800e09): kobject_uevent_env [ 98.890581] kobject: 'loop5' (000000006a800e09): fill_kobj_path: path = '/devices/virtual/block/loop5' [ 99.712072] kobject: 'loop1' (00000000ae979820): kobject_uevent_env [ 99.718639] kobject: 'loop1' (00000000ae979820): fill_kobj_path: path = '/devices/virtual/block/loop1' [ 99.732692] kobject: 'loop2' (000000007e9f7fcf): kobject_uevent_env [ 99.740422] kobject: 'loop2' (000000007e9f7fcf): fill_kobj_path: path = '/devices/virtual/block/loop2' [ 99.752337] kobject: 'loop4' (0000000080cf1901): kobject_uevent_env [ 99.759520] kobject: 'loop4' (0000000080cf1901): fill_kobj_path: path = '/devices/virtual/block/loop4' [ 99.772880] kobject: 'loop5' (000000006a800e09): kobject_uevent_env [ 99.783799] kobject: 'loop5' (000000006a800e09): fill_kobj_path: path = '/devices/virtual/block/loop5' [ 99.795596] kobject: 'loop3' (00000000f996c7e0): kobject_uevent_env [ 99.802360] kobject: 'loop3' (00000000f996c7e0): fill_kobj_path: path = '/devices/virtual/block/loop3' [ 99.812239] kobject: 'loop0' (000000004a2c7ffd): kobject_uevent_env [ 99.818736] kobject: 'loop0' (000000004a2c7ffd): fill_kobj_path: path = '/devices/virtual/block/loop0' [ 100.621538] kobject: 'loop2' (000000007e9f7fcf): kobject_uevent_env [ 100.628087] kobject: 'loop2' (000000007e9f7fcf): fill_kobj_path: path = '/devices/virtual/block/loop2' [ 100.643908] kobject: 'loop1' (00000000ae979820): kobject_uevent_env [ 100.650866] kobject: 'loop1' (00000000ae979820): fill_kobj_path: path = '/devices/virtual/block/loop1' [ 100.665920] kobject: 'loop4' (0000000080cf1901): kobject_uevent_env [ 100.673927] kobject: 'loop4' (0000000080cf1901): fill_kobj_path: path = '/devices/virtual/block/loop4' [ 100.688660] kobject: 'loop5' (000000006a800e09): kobject_uevent_env [ 100.699184] kobject: 'loop5' (000000006a800e09): fill_kobj_path: path = '/devices/virtual/block/loop5' [ 100.709488] kobject: 'loop0' (000000004a2c7ffd): kobject_uevent_env [ 100.715987] kobject: 'loop0' (000000004a2c7ffd): fill_kobj_path: path = '/devices/virtual/block/loop0' [ 100.730803] kobject: 'loop3' (00000000f996c7e0): kobject_uevent_env [ 100.738113] kobject: 'loop3' (00000000f996c7e0): fill_kobj_path: path = '/devices/virtual/block/loop3'