syzkaller syzkaller login: [ 18.366191][ T322] sshd (322) used greatest stack depth: 23392 bytes left [ 18.471083][ T23] kauditd_printk_skb: 64 callbacks suppressed [ 18.471095][ T23] audit: type=1400 audit(1747134073.940:75): avc: denied { transition } for pid=323 comm="sshd" path="/bin/sh" dev="sda1" ino=89 scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 18.499198][ T23] audit: type=1400 audit(1747134073.940:76): avc: denied { noatsecure } for pid=323 comm="sshd" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 18.518645][ T23] audit: type=1400 audit(1747134073.940:77): avc: denied { write } for pid=323 comm="sh" path="pipe:[11098]" dev="pipefs" ino=11098 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1 [ 18.541071][ T23] audit: type=1400 audit(1747134073.940:78): avc: denied { rlimitinh } for pid=323 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 18.559710][ T23] audit: type=1400 audit(1747134073.940:79): avc: denied { siginh } for pid=323 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 18.578467][ T23] audit: type=1400 audit(1747134074.010:80): avc: denied { read } for pid=146 comm="syslogd" name="log" dev="sda1" ino=1915 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass=lnk_file permissive=1 Warning: Permanently added '10.128.0.89' (ED25519) to the list of known hosts. 2025/05/13 11:01:22 ignoring optional flag "sandboxArg"="0" 2025/05/13 11:01:23 parsed 1 programs [ 27.584419][ T23] audit: type=1400 audit(1747134083.060:81): avc: denied { node_bind } for pid=335 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 28.158164][ T23] audit: type=1400 audit(1747134083.630:82): avc: denied { mounton } for pid=343 comm="syz-executor" path="/syzcgroup/unified" dev="sda1" ino=1926 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:root_t tclass=dir permissive=1 [ 28.159482][ T343] cgroup1: Unknown subsys name 'net' [ 28.180805][ T23] audit: type=1400 audit(1747134083.630:83): avc: denied { mount } for pid=343 comm="syz-executor" name="/" dev="cgroup2" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 28.186382][ T343] cgroup1: Unknown subsys name 'net_prio' [ 28.214071][ T343] cgroup1: Unknown subsys name 'devices' [ 28.220404][ T23] audit: type=1400 audit(1747134083.690:84): avc: denied { unmount } for pid=343 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 28.386641][ T343] cgroup1: Unknown subsys name 'hugetlb' [ 28.392472][ T343] cgroup1: Unknown subsys name 'rlimit' [ 28.558215][ T23] audit: type=1400 audit(1747134084.030:85): avc: denied { setattr } for pid=343 comm="syz-executor" name="raw-gadget" dev="devtmpfs" ino=9792 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 [ 28.581687][ T23] audit: type=1400 audit(1747134084.030:86): avc: denied { create } for pid=343 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 28.602179][ T23] audit: type=1400 audit(1747134084.030:87): avc: denied { write } for pid=343 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 28.607833][ T346] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 28.622454][ T23] audit: type=1400 audit(1747134084.030:88): avc: denied { read } for pid=343 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 28.651157][ T23] audit: type=1400 audit(1747134084.030:89): avc: denied { module_request } for pid=343 comm="syz-executor" kmod="netdev-wpan0" scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:kernel_t tclass=system permissive=1 [ 28.672999][ T23] audit: type=1400 audit(1747134084.030:90): avc: denied { mounton } for pid=343 comm="syz-executor" path="/proc/sys/fs/binfmt_misc" dev="binfmt_misc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:binfmt_misc_fs_t tclass=dir permissive=1 [ 28.731457][ T343] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 29.154341][ T353] request_module fs-gadgetfs succeeded, but still no fs? [ 29.451398][ T360] syz-executor (360) used greatest stack depth: 21632 bytes left [ 29.596699][ T381] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.603810][ T381] bridge0: port 1(bridge_slave_0) entered disabled state [ 29.612151][ T381] device bridge_slave_0 entered promiscuous mode [ 29.620076][ T381] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.627164][ T381] bridge0: port 2(bridge_slave_1) entered disabled state [ 29.634576][ T381] device bridge_slave_1 entered promiscuous mode [ 29.753792][ T381] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.760896][ T381] bridge0: port 2(bridge_slave_1) entered forwarding state [ 29.768211][ T381] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.775261][ T381] bridge0: port 1(bridge_slave_0) entered forwarding state [ 29.803468][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 29.811627][ T7] bridge0: port 1(bridge_slave_0) entered disabled state [ 29.819626][ T7] bridge0: port 2(bridge_slave_1) entered disabled state [ 29.844441][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 29.854786][ T7] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.861823][ T7] bridge0: port 1(bridge_slave_0) entered forwarding state [ 29.869206][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 29.877684][ T7] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.884724][ T7] bridge0: port 2(bridge_slave_1) entered forwarding state [ 29.893903][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 29.908753][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 29.919144][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 29.929854][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready 2025/05/13 11:01:25 executed programs: 0 [ 29.941539][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 29.952883][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 29.963349][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 30.027608][ T381] syz-executor (381) used greatest stack depth: 21184 bytes left [ 30.130191][ T409] bridge0: port 1(bridge_slave_0) entered blocking state [ 30.137570][ T409] bridge0: port 1(bridge_slave_0) entered disabled state [ 30.145473][ T409] device bridge_slave_0 entered promiscuous mode [ 30.152326][ T409] bridge0: port 2(bridge_slave_1) entered blocking state [ 30.159614][ T409] bridge0: port 2(bridge_slave_1) entered disabled state [ 30.166960][ T409] device bridge_slave_1 entered promiscuous mode [ 30.241840][ T413] bridge0: port 1(bridge_slave_0) entered blocking state [ 30.249060][ T413] bridge0: port 1(bridge_slave_0) entered disabled state [ 30.256548][ T413] device bridge_slave_0 entered promiscuous mode [ 30.266875][ T413] bridge0: port 2(bridge_slave_1) entered blocking state [ 30.273916][ T413] bridge0: port 2(bridge_slave_1) entered disabled state [ 30.281389][ T413] device bridge_slave_1 entered promiscuous mode [ 30.333849][ T416] bridge0: port 1(bridge_slave_0) entered blocking state [ 30.340996][ T416] bridge0: port 1(bridge_slave_0) entered disabled state [ 30.348453][ T416] device bridge_slave_0 entered promiscuous mode [ 30.374786][ T416] bridge0: port 2(bridge_slave_1) entered blocking state [ 30.381826][ T416] bridge0: port 2(bridge_slave_1) entered disabled state [ 30.389343][ T416] device bridge_slave_1 entered promiscuous mode [ 30.403315][ T411] bridge0: port 1(bridge_slave_0) entered blocking state [ 30.410628][ T411] bridge0: port 1(bridge_slave_0) entered disabled state [ 30.418054][ T411] device bridge_slave_0 entered promiscuous mode [ 30.434875][ T418] bridge0: port 1(bridge_slave_0) entered blocking state [ 30.441917][ T418] bridge0: port 1(bridge_slave_0) entered disabled state [ 30.449581][ T418] device bridge_slave_0 entered promiscuous mode [ 30.466062][ T411] bridge0: port 2(bridge_slave_1) entered blocking state [ 30.473111][ T411] bridge0: port 2(bridge_slave_1) entered disabled state [ 30.480726][ T411] device bridge_slave_1 entered promiscuous mode [ 30.494907][ T418] bridge0: port 2(bridge_slave_1) entered blocking state [ 30.501939][ T418] bridge0: port 2(bridge_slave_1) entered disabled state [ 30.509404][ T418] device bridge_slave_1 entered promiscuous mode [ 30.649536][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 30.657436][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 30.681362][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 30.689793][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 30.698046][ T368] bridge0: port 1(bridge_slave_0) entered blocking state [ 30.705163][ T368] bridge0: port 1(bridge_slave_0) entered forwarding state [ 30.712764][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 30.721183][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 30.729533][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 30.737678][ T368] bridge0: port 2(bridge_slave_1) entered blocking state [ 30.744719][ T368] bridge0: port 2(bridge_slave_1) entered forwarding state [ 30.773995][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 30.781647][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 30.791068][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 30.799356][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 30.826171][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 30.834737][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 30.842831][ T368] bridge0: port 1(bridge_slave_0) entered blocking state [ 30.849867][ T368] bridge0: port 1(bridge_slave_0) entered forwarding state [ 30.857822][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 30.865634][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 30.873057][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 30.881580][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 30.889705][ T368] bridge0: port 2(bridge_slave_1) entered blocking state [ 30.896733][ T368] bridge0: port 2(bridge_slave_1) entered forwarding state [ 30.904118][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 30.912610][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 30.920783][ T368] bridge0: port 1(bridge_slave_0) entered blocking state [ 30.927800][ T368] bridge0: port 1(bridge_slave_0) entered forwarding state [ 30.935290][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 30.943535][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 30.951777][ T368] bridge0: port 2(bridge_slave_1) entered blocking state [ 30.958797][ T368] bridge0: port 2(bridge_slave_1) entered forwarding state [ 30.966520][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 30.974772][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 30.982836][ T368] bridge0: port 1(bridge_slave_0) entered blocking state [ 30.989861][ T368] bridge0: port 1(bridge_slave_0) entered forwarding state [ 30.997435][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 31.005978][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 31.014047][ T368] bridge0: port 2(bridge_slave_1) entered blocking state [ 31.021073][ T368] bridge0: port 2(bridge_slave_1) entered forwarding state [ 31.028457][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 31.036741][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 31.044687][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 31.052643][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 31.060672][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 31.068372][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 31.076086][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 31.102064][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 31.110254][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 31.118763][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 31.127648][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 31.135602][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 31.143456][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 31.176992][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 31.186369][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 31.194437][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 31.202817][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 31.210543][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 31.218815][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 31.227371][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 31.235584][ T368] bridge0: port 1(bridge_slave_0) entered blocking state [ 31.242598][ T368] bridge0: port 1(bridge_slave_0) entered forwarding state [ 31.250020][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 31.258561][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 31.266784][ T368] bridge0: port 2(bridge_slave_1) entered blocking state [ 31.273800][ T368] bridge0: port 2(bridge_slave_1) entered forwarding state [ 31.292192][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 31.338175][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 31.347555][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 31.355916][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 31.364230][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 31.372563][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 31.381029][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 31.389186][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 31.397236][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 31.405265][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 31.447259][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 31.455860][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 31.464678][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 31.472974][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 31.482983][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 31.491662][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 31.501870][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 31.510701][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 31.519205][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 31.527759][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 31.536347][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 31.546615][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 31.554920][ T368] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 31.595330][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 31.605306][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 31.613683][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 31.622141][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 31.630698][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 31.639102][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 31.647557][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 31.656001][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 131.684231][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 131.691194][ C0] (detected by 0, t=10002 jiffies, g=993, q=1366) [ 131.697688][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10003 (4294950395-4294940392), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 131.711043][ C0] syz.6.18 R running task 29824 467 413 0x00000006 [ 131.719036][ C0] Call Trace: [ 131.722315][ C0] [ 131.725164][ C0] sched_show_task+0x35b/0x520 [ 131.729921][ C0] ? __ia32_sys_sched_rr_get_interval_time32+0x100/0x100 [ 131.736932][ C0] ? check_preemption_disabled+0x9b/0x300 [ 131.742659][ C0] ? find_next_bit+0xc9/0x100 [ 131.747340][ C0] ? cpumask_next+0x12/0x30 [ 131.751842][ C0] print_other_cpu_stall+0x803/0x9d0 [ 131.757126][ C0] rcu_sched_clock_irq+0x73e/0x1450 [ 131.762318][ C0] update_process_times+0x148/0x1b0 [ 131.767507][ C0] tick_sched_timer+0x250/0x3e0 [ 131.772345][ C0] ? tick_setup_sched_timer+0x450/0x450 [ 131.777879][ C0] __hrtimer_run_queues+0x37a/0xad0 [ 131.783070][ C0] ? hrtimer_interrupt+0xdc0/0xdc0 [ 131.788174][ C0] hrtimer_interrupt+0x3a6/0xdc0 [ 131.793105][ C0] smp_apic_timer_interrupt+0x113/0x490 [ 131.798639][ C0] apic_timer_interrupt+0xf/0x20 [ 131.803560][ C0] [ 131.806578][ C0] RIP: 0010:preempt_count_sub+0x66/0x170 [ 131.812206][ C0] Code: ff ff ff 7f 39 cf 7f 27 81 ff ff 00 00 00 0f 93 c1 84 c0 0f 95 c0 08 c8 74 55 65 8b 05 bf 18 c1 7e f7 df 65 01 3d b6 18 c1 7e <5b> 41 5e 5d c3 e8 10 64 d8 00 85 c0 74 f2 48 c7 c0 b4 e1 2b 86 48 [ 131.831802][ C0] RSP: 0018:ffff8881e7d17b00 EFLAGS: 00000297 ORIG_RAX: ffffffffffffff13 [ 131.840213][ C0] RAX: 0000000080000001 RBX: dffffc0000000000 RCX: 0000000000000000 [ 131.848292][ C0] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff [ 131.856267][ C0] RBP: ffff8881e7d17b10 R08: dffffc0000000000 R09: ffffed103cf659d9 [ 131.864265][ C0] R10: ffffed103cf659d9 R11: 1ffff1103cf659d8 R12: ffff8881e7b2cec0 [ 131.872226][ C0] R13: 00007f5af62f6d00 R14: 0000000000000000 R15: 00000000ffffff01 [ 131.880202][ C0] copy_fpstate_to_sigframe+0x3d5/0xb00 [ 131.885737][ C0] ? apic_timer_interrupt+0xa/0x20 [ 131.890838][ C0] ? asan.module_ctor+0x10/0x10 [ 131.895679][ C0] ? _raw_spin_unlock_irq+0x4e/0x70 [ 131.900875][ C0] ? get_signal+0x1330/0x13d0 [ 131.905547][ C0] ? fpu__alloc_mathframe+0x88/0x150 [ 131.910821][ C0] do_signal+0x5ac/0xda0 [ 131.915054][ C0] ? signal_fault+0x1d0/0x1d0 [ 131.919839][ C0] ? __ia32_sys_rt_sigreturn+0x67f/0x780 [ 131.925462][ C0] exit_to_usermode_loop+0xc4/0x1b0 [ 131.930648][ C0] prepare_exit_to_usermode+0x18e/0x1f0 [ 131.936183][ C0] do_syscall_64+0x13e/0x170 [ 131.940762][ C0] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 131.946641][ C0] RIP: 0033:0x7f5af6886967 [ 131.951047][ C0] Code: ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 [ 131.970640][ C0] RSP: 002b:00007f5af62f70e8 EFLAGS: 00000246 [ 131.976715][ C0] RAX: 00000000000000ca RBX: 00007f5af6aadfa8 RCX: 00007f5af6886969 [ 131.984675][ C0] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f5af6aadfa8 [ 131.992808][ C0] RBP: 00007f5af6aadfa0 R08: 0000000000000000 R09: 0000000000000000 [ 132.000769][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5af6aadfac [ 132.008734][ C0] R13: 0000000000000000 R14: 00007ffc4bce6810 R15: 00007ffc4bce68f8 [ 132.016707][ C0] rcu: rcu_preempt kthread starved for 10035 jiffies! g993 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 132.027797][ C0] rcu: RCU grace-period kthread stack dump: [ 132.033674][ C0] rcu_preempt R running task 29120 11 2 0x80004000 [ 132.041562][ C0] Call Trace: [ 132.044846][ C0] __schedule+0xa4f/0x12a0 [ 132.049271][ C0] ? enqueue_timer+0x150/0x2c0 [ 132.054043][ C0] ? __sched_text_start+0x8/0x8 [ 132.058881][ C0] ? _raw_spin_unlock_irqrestore+0x5b/0x80 [ 132.064680][ C0] schedule+0x12d/0x1c0 [ 132.068824][ C0] schedule_timeout+0x12c/0x340 [ 132.073690][ C0] ? schedule_preempt_disabled+0x20/0x20 [ 132.079314][ C0] ? console_conditional_schedule+0x10/0x10 [ 132.085197][ C0] ? run_local_timers+0x160/0x160 [ 132.090240][ C0] ? prepare_to_swait_event+0x316/0x330 [ 132.095775][ C0] rcu_gp_kthread+0xe26/0x1bf0 [ 132.100528][ C0] ? rcu_cleanup_dead_rnp+0x170/0x170 [ 132.105891][ C0] ? rcu_barrier_callback+0x50/0x50 [ 132.111082][ C0] ? __kasan_check_read+0x11/0x20 [ 132.116101][ C0] ? __kthread_parkme+0xb9/0x1c0 [ 132.121030][ C0] kthread+0x31e/0x3a0 [ 132.125087][ C0] ? rcu_barrier_callback+0x50/0x50 [ 132.130272][ C0] ? kthread_blkcg+0xd0/0xd0 [ 132.134851][ C0] ret_from_fork+0x1f/0x30