[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 49.071490][ T25] audit: type=1800 audit(1575433133.407:25): pid=8357 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 49.097125][ T25] audit: type=1800 audit(1575433133.407:26): pid=8357 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 49.139581][ T25] audit: type=1800 audit(1575433133.417:27): pid=8357 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.1.28' (ECDSA) to the list of known hosts. 2019/12/04 04:19:04 fuzzer started 2019/12/04 04:19:06 dialing manager at 10.128.0.26:42111 2019/12/04 04:19:06 syscalls: 2689 2019/12/04 04:19:06 code coverage: enabled 2019/12/04 04:19:06 comparison tracing: enabled 2019/12/04 04:19:06 extra coverage: extra coverage is not supported by the kernel 2019/12/04 04:19:06 setuid sandbox: enabled 2019/12/04 04:19:06 namespace sandbox: enabled 2019/12/04 04:19:06 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/04 04:19:06 fault injection: enabled 2019/12/04 04:19:06 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/04 04:19:06 net packet injection: enabled 2019/12/04 04:19:06 net device setup: enabled 2019/12/04 04:19:06 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/04 04:19:06 devlink PCI setup: PCI device 0000:00:10.0 is not available 04:19:07 executing program 0: r0 = openat$ptmx(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/ptmx\x00', 0x0, 0x0) ioctl$TIOCSETD(r0, 0x5423, &(0x7f0000000100)=0x14) ioctl$TCSETSF(r0, 0x5437, 0x0) 04:19:07 executing program 1: r0 = memfd_create(&(0x7f00000001c0)='ppp0+,selfppp0vmnet1proc\']\x00', 0x0) r1 = syz_open_dev$sndseq(&(0x7f0000000400)='/dev/snd/seq\x00', 0x0, 0x41) r2 = dup2(r1, r0) ioctl$SNDRV_SEQ_IOCTL_CREATE_QUEUE(r2, 0xc08c5332, &(0x7f00000000c0)={0x0, 0x0, 0x0, '\x9e\xdez\x8cZ\xe9^\xc8g,\x934\x0fd:fO\x13\xee\xabe\xc02)\x01\xdck\xd3l\xde,Q\xf0\x1b\x7f\v\x01O\x9f\x91\xee\xb7\xc3|r@\xf4v\xc8\xd7S\xd0\x00\xaa\x8f\xaf\x8f\xb5t\xdb\xcf\xa6\xdcM'}) ioctl$SNDRV_SEQ_IOCTL_SET_CLIENT_INFO(r2, 0x40bc5311, &(0x7f0000000000)={0x80, 0x1, 'clien\x00\x00\x00\x00\x00\x00\x04\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\b\x00', 0xffffffff90000004, "7fd82d5e02ca3901", "88e7ed00007fff051eae961ef6c6992b7e6e560000f9fff77711be18a3d918e0"}) write$sndseq(r0, &(0x7f0000042f70)=[{0x0, 0x0, 0x0, 0x0, @time={0x77359400}, {}, {}, @connect}, {0x0, 0x0, 0x0, 0x0, @tick, {0x26}, {}, @control}], 0x60) syzkaller login: [ 63.066696][ T8522] IPVS: ftp: loaded support on port[0] = 21 [ 63.247540][ T8522] chnl_net:caif_netlink_parms(): no params data found [ 63.289510][ T8522] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.298656][ T8522] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.307493][ T8522] device bridge_slave_0 entered promiscuous mode [ 63.328174][ T8522] bridge0: port 2(bridge_slave_1) entered blocking state 04:19:07 executing program 2: syz_mount_image$ext4(&(0x7f0000000040)='ext3\x00', &(0x7f00000000c0)='./file0\x00', 0x0, 0x1, &(0x7f0000000340)=[{&(0x7f0000000240)="25bca274769e620aa734fa0095e0612687ecb86a5c8802a9d8aea872943afd02000000b579a7186270146d0e0206e73ba8c63cd7dcc6760253ef", 0x3a, 0x400}], 0x0, &(0x7f0000000100)={[{@nodelalloc='nodelalloc'}]}) [ 63.335361][ T8522] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.357996][ T8522] device bridge_slave_1 entered promiscuous mode [ 63.393136][ T8525] IPVS: ftp: loaded support on port[0] = 21 [ 63.400182][ T8522] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 63.415832][ T8522] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 63.472344][ T8522] team0: Port device team_slave_0 added [ 63.492136][ T8522] team0: Port device team_slave_1 added 04:19:07 executing program 3: r0 = epoll_create1(0x0) r1 = syz_open_dev$sndseq(&(0x7f00000003c0)='/dev/snd/seq\x00', 0x0, 0x20401) epoll_ctl$EPOLL_CTL_ADD(r0, 0x1, r1, &(0x7f0000000040)) epoll_ctl$EPOLL_CTL_MOD(r0, 0x3, r1, &(0x7f0000000080)={0xe}) epoll_pwait(r0, &(0x7f0000000000)=[{}], 0x1, 0x0, 0x0, 0x0) [ 63.601412][ T8522] device hsr_slave_0 entered promiscuous mode [ 63.649797][ T8522] device hsr_slave_1 entered promiscuous mode [ 63.704629][ T8529] IPVS: ftp: loaded support on port[0] = 21 [ 63.741825][ T8525] chnl_net:caif_netlink_parms(): no params data found [ 63.801545][ T8522] netdevsim netdevsim0 netdevsim0: renamed from eth0 04:19:08 executing program 4: bpf$BPF_BTF_LOAD(0x12, &(0x7f0000004700)={&(0x7f0000000080)=ANY=[@ANYBLOB="9feb0100180000000000000030000000300000000700000000000000000000060400000000000000000000090100000000000000010000840000000200000000020000000000000000300000612e00"], &(0x7f0000004600)=""/210, 0x4f, 0x193, 0x1}, 0x20) [ 63.902606][ T8522] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 63.961582][ T8525] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.976535][ T8531] IPVS: ftp: loaded support on port[0] = 21 [ 63.977139][ T8525] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.998779][ T8525] device bridge_slave_0 entered promiscuous mode [ 64.040047][ T8522] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 64.099316][ T8522] netdevsim netdevsim0 netdevsim3: renamed from eth3 04:19:08 executing program 5: unshare(0x2a000400) syz_open_dev$evdev(&(0x7f0000000000)='/dev/input/event#\x00', 0x0, 0x0) r0 = syz_open_dev$evdev(0x0, 0x0, 0x221000) fcntl$dupfd(r0, 0x0, r0) [ 64.144444][ T8525] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.155930][ T8525] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.164211][ T8525] device bridge_slave_1 entered promiscuous mode [ 64.194712][ T8534] IPVS: ftp: loaded support on port[0] = 21 [ 64.247632][ T8525] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 64.284187][ T8525] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 64.318127][ T8522] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.325374][ T8522] bridge0: port 2(bridge_slave_1) entered forwarding state [ 64.333388][ T8522] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.340649][ T8522] bridge0: port 1(bridge_slave_0) entered forwarding state [ 64.356815][ T3037] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.366078][ T3037] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.383837][ T8537] IPVS: ftp: loaded support on port[0] = 21 [ 64.426264][ T8525] team0: Port device team_slave_0 added [ 64.433653][ T8525] team0: Port device team_slave_1 added [ 64.493725][ T8529] chnl_net:caif_netlink_parms(): no params data found [ 64.579881][ T8525] device hsr_slave_0 entered promiscuous mode [ 64.647382][ T8525] device hsr_slave_1 entered promiscuous mode [ 64.717228][ T8525] debugfs: Directory 'hsr0' with parent '/' already present! [ 64.811783][ T8529] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.819949][ T8529] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.828883][ T8529] device bridge_slave_0 entered promiscuous mode [ 64.838953][ T8529] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.846049][ T8529] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.854296][ T8529] device bridge_slave_1 entered promiscuous mode [ 64.879268][ T8531] chnl_net:caif_netlink_parms(): no params data found [ 64.902657][ T8529] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 64.915040][ T8529] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 64.978698][ T8534] chnl_net:caif_netlink_parms(): no params data found [ 65.002747][ T8529] team0: Port device team_slave_0 added [ 65.019492][ T8525] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 65.068361][ T8529] team0: Port device team_slave_1 added [ 65.098166][ T8522] 8021q: adding VLAN 0 to HW filter on device bond0 [ 65.105834][ T8525] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 65.161436][ T8525] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 65.229096][ T8525] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 65.268604][ T8531] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.275691][ T8531] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.286012][ T8531] device bridge_slave_0 entered promiscuous mode [ 65.325715][ T8531] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.333287][ T8531] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.341745][ T8531] device bridge_slave_1 entered promiscuous mode [ 65.362036][ T8537] chnl_net:caif_netlink_parms(): no params data found [ 65.419528][ T8529] device hsr_slave_0 entered promiscuous mode [ 65.459146][ T8529] device hsr_slave_1 entered promiscuous mode [ 65.497237][ T8529] debugfs: Directory 'hsr0' with parent '/' already present! [ 65.512084][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 65.520663][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 65.531699][ T8531] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 65.544017][ T8534] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.552417][ T8534] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.561855][ T8534] device bridge_slave_0 entered promiscuous mode [ 65.584075][ T8531] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 65.609389][ T8522] 8021q: adding VLAN 0 to HW filter on device team0 [ 65.617419][ T8534] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.624634][ T8534] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.634038][ T8534] device bridge_slave_1 entered promiscuous mode [ 65.654604][ T8534] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 65.686588][ T8529] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 65.740790][ T8529] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 65.780759][ T8534] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 65.790732][ T8537] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.798299][ T8537] bridge0: port 1(bridge_slave_0) entered disabled state [ 65.806024][ T8537] device bridge_slave_0 entered promiscuous mode [ 65.821002][ T3037] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 65.829842][ T3037] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 65.838670][ T3037] bridge0: port 1(bridge_slave_0) entered blocking state [ 65.845712][ T3037] bridge0: port 1(bridge_slave_0) entered forwarding state [ 65.855561][ T8529] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 65.904713][ T8529] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 65.960878][ T8537] bridge0: port 2(bridge_slave_1) entered blocking state [ 65.968038][ T8537] bridge0: port 2(bridge_slave_1) entered disabled state [ 65.975779][ T8537] device bridge_slave_1 entered promiscuous mode [ 65.985018][ T8531] team0: Port device team_slave_0 added [ 65.997689][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 66.006318][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 66.014947][ T5] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.022111][ T5] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.029966][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 66.059856][ T8531] team0: Port device team_slave_1 added [ 66.071720][ T8534] team0: Port device team_slave_0 added [ 66.090687][ T8537] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 66.102092][ T8537] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 66.122165][ T8534] team0: Port device team_slave_1 added [ 66.170259][ T8531] device hsr_slave_0 entered promiscuous mode [ 66.197496][ T8531] device hsr_slave_1 entered promiscuous mode [ 66.237122][ T8531] debugfs: Directory 'hsr0' with parent '/' already present! [ 66.252397][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 66.278829][ T8525] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.295173][ T8537] team0: Port device team_slave_0 added [ 66.303074][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 66.312814][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 66.321944][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 66.330938][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 66.340572][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 66.349114][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 66.358128][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 66.369555][ T8522] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 66.382526][ T8522] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 66.439014][ T8534] device hsr_slave_0 entered promiscuous mode [ 66.508999][ T8534] device hsr_slave_1 entered promiscuous mode [ 66.547458][ T8534] debugfs: Directory 'hsr0' with parent '/' already present! [ 66.565544][ T8537] team0: Port device team_slave_1 added [ 66.579860][ T3037] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 66.588851][ T3037] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 66.607624][ T8522] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 66.642625][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 66.650862][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 66.658940][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 66.666783][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 66.690236][ T8525] 8021q: adding VLAN 0 to HW filter on device team0 [ 66.720119][ T8534] netdevsim netdevsim4 netdevsim0: renamed from eth0 [ 66.799355][ T8531] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 66.910140][ T8537] device hsr_slave_0 entered promiscuous mode [ 66.948410][ T8537] device hsr_slave_1 entered promiscuous mode [ 66.987286][ T8537] debugfs: Directory 'hsr0' with parent '/' already present! [ 66.996000][ T8534] netdevsim netdevsim4 netdevsim1: renamed from eth1 [ 67.049458][ T8534] netdevsim netdevsim4 netdevsim2: renamed from eth2 [ 172.037002][ C1] rcu: INFO: rcu_preempt self-detected stall on CPU [ 172.044154][ C1] rcu: 1-...!: (10499 ticks this GP) idle=8f2/1/0x4000000000000002 softirq=12713/12713 fqs=39 [ 172.054927][ C1] (t=10500 jiffies g=7041 q=55) [ 172.059875][ C1] rcu: rcu_preempt kthread starved for 10418 jiffies! g7041 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 172.070982][ C1] rcu: RCU grace-period kthread stack dump: [ 172.076911][ C1] rcu_preempt R running task 29032 10 2 0x80004000 [ 172.084830][ C1] Call Trace: [ 172.088141][ C1] __schedule+0x9a0/0xcc0 [ 172.092477][ C1] schedule+0x181/0x210 [ 172.096797][ C1] schedule_timeout+0x14f/0x240 [ 172.101697][ C1] ? run_local_timers+0x120/0x120 [ 172.106786][ C1] rcu_gp_kthread+0xed8/0x1770 [ 172.111566][ C1] kthread+0x332/0x350 [ 172.115873][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 172.121094][ C1] ? kthread_blkcg+0xe0/0xe0 [ 172.125724][ C1] ret_from_fork+0x24/0x30 [ 172.130374][ C1] NMI backtrace for cpu 1 [ 172.134747][ C1] CPU: 1 PID: 8535 Comm: kworker/1:3 Not tainted 5.4.0-syzkaller #0 [ 172.142997][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 172.153109][ C1] Workqueue: rcu_gp process_srcu [ 172.158084][ C1] Call Trace: [ 172.161371][ C1] [ 172.164298][ C1] dump_stack+0x1fb/0x318 [ 172.168680][ C1] nmi_cpu_backtrace+0xaf/0x1a0 [ 172.173536][ C1] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 172.179684][ C1] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 172.185786][ C1] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 172.191794][ C1] arch_trigger_cpumask_backtrace+0x10/0x20 [ 172.197835][ C1] rcu_dump_cpu_stacks+0x15a/0x220 [ 172.203176][ C1] rcu_sched_clock_irq+0xe25/0x1ad0 [ 172.208419][ C1] ? trace_hardirqs_off+0x74/0x80 [ 172.213648][ C1] update_process_times+0x12d/0x180 [ 172.219092][ C1] tick_sched_timer+0x263/0x420 [ 172.224087][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 172.229766][ C1] __hrtimer_run_queues+0x403/0x840 [ 172.235177][ C1] hrtimer_interrupt+0x38c/0xda0 [ 172.240186][ C1] ? debug_smp_processor_id+0x9/0x20 [ 172.245551][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 172.251118][ C1] apic_timer_interrupt+0xf/0x20 [ 172.256114][ C1] [ 172.259065][ C1] RIP: 0010:mod_memcg_page_state+0x123/0x190 [ 172.265443][ C1] Code: e8 f2 9e 69 00 48 83 3d 12 22 c2 07 00 74 70 e8 e3 27 2e 00 4c 89 ff 57 9d 0f 1f 44 00 00 e8 f4 c2 33 00 eb 43 e8 cd 27 2e 00 3c e8 86 c0 33 00 48 c7 c0 28 96 0a 89 48 c1 e8 03 42 80 3c 20 [ 172.285153][ C1] RSP: 0018:ffffc90001ef78c8 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 [ 172.295337][ C1] RAX: ffffffff81487433 RBX: 0000000000000000 RCX: ffff8880a7456300 [ 172.303471][ C1] RDX: 0000000000000000 RSI: 00000000fffffffc RDI: ffffea0002509880 [ 172.311951][ C1] RBP: ffffc90001ef78e8 R08: 000000000003a768 R09: fffffbfff120248a [ 172.320100][ C1] R10: fffffbfff120248a R11: 0000000000000000 R12: dffffc0000000000 [ 172.328122][ C1] R13: dffffc0000000000 R14: 00000000fffffffc R15: ffff8880a80119a8 [ 172.336122][ C1] ? mod_memcg_page_state+0x123/0x190 [ 172.341488][ C1] ? mod_memcg_page_state+0x123/0x190 [ 172.346849][ C1] free_thread_stack+0x168/0x590 [ 172.351779][ C1] put_task_stack+0xa3/0x130 [ 172.356358][ C1] finish_task_switch+0x3f1/0x550 [ 172.361384][ C1] __schedule+0x9a8/0xcc0 [ 172.365962][ C1] preempt_schedule_irq+0xc1/0x140 [ 172.371100][ C1] retint_kernel+0x1b/0x2b [ 172.375575][ C1] RIP: 0010:delay_tsc+0x96/0xf0 [ 172.380739][ C1] Code: fb 41 89 c7 0f 01 f9 66 90 49 89 d4 49 c1 e4 20 49 09 c4 eb 29 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 a8 01 75 ca f3 90 01 00 00 00 e8 10 cb 67 f9 e8 1b a3 a8 fb 41 39 c7 75 bb 0f 01 [ 172.400939][ C1] RSP: 0018:ffffc90001ef7b48 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff02 [ 172.409377][ C1] RAX: 0000000080000000 RBX: 0000000000002b0a RCX: 0000000000000001 [ 172.417351][ C1] RDX: 0000000000000026 RSI: 0000000000000001 RDI: 0000000000000001 [ 172.425350][ C1] RBP: ffffc90001ef7b68 R08: ffffffff8393da27 R09: fffffbfff1455efd [ 172.433325][ C1] R10: fffffbfff1455efd R11: 0000000000000000 R12: 000000266302947b [ 172.441404][ C1] R13: 0000000000000000 R14: 0000000000002ced R15: 0000000000000001 [ 172.449417][ C1] ? check_preemption_disabled+0x37/0x260 [ 172.455151][ C1] ? delay_tsc+0xc6/0xf0 [ 172.459426][ C1] __const_udelay+0x5e/0x70 [ 172.463986][ C1] try_check_zero+0x6e/0x380 [ 172.469810][ C1] process_srcu+0x1b7/0xd20 [ 172.474418][ C1] process_one_work+0x7ef/0x10d0 [ 172.479385][ C1] worker_thread+0xc01/0x1630 [ 172.484109][ C1] kthread+0x332/0x350 [ 172.488307][ C1] ? rcu_lock_release+0x30/0x30 [ 172.493304][ C1] ? kthread_blkcg+0xe0/0xe0 [ 172.497904][ C1] ret_from_fork+0x24/0x30