Warning: Permanently added '[localhost]:19181' (ECDSA) to the list of known hosts. syzkaller login: [ 968.827195][ T3085] cgroup: Unknown subsys name 'net' [ 969.496921][ T3085] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 971.093255][ T3085] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS executing program executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory executing program executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory executing program [ 1276.019575][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 1276.020194][ C0] rcu: 0-....: (1 GPs behind) idle=6ccc/1/0x4000000000000000 softirq=10291/10292 fqs=5682 [ 1276.020803][ C0] rcu: (t=30000 jiffies g=22041 q=40 ncpus=2) [ 1276.021443][ C0] CPU: 0 PID: 3097 Comm: syz-executor281 Not tainted 6.4.0-syzkaller-04247-g3a8a670eeeaa #0 [ 1276.022224][ C0] Hardware name: linux,dummy-virt (DT) [ 1276.022968][ C0] pstate: 20400009 (nzCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 1276.023616][ C0] pc : pie_calculate_probability+0x158/0x228 [ 1276.024378][ C0] lr : fq_pie_timer+0x6c/0xbc [ 1276.024686][ C0] sp : ffff800080003e30 [ 1276.024943][ C0] x29: ffff800080003e30 x28: fbff000002ca2f40 x27: 00000000000000a0 [ 1276.025556][ C0] x26: 0000000000000005 x25: 0000000000000001 x24: fdff0000052158ac [ 1276.026091][ C0] x23: fdff000005215a10 x22: 0000000000000070 x21: fdff0000052159c0 [ 1276.026698][ C0] x20: fdff000005215980 x19: 0000000000006958 x18: 000000000000001c [ 1276.027231][ C0] x17: 00000000b8b642da x16: ffff80008252bf98 x15: 00000000275f388f [ 1276.027747][ C0] x14: 0000000000000000 x13: 00ffffffffffffff x12: 00000000000f4240 [ 1276.028265][ C0] x11: 0000000000000001 x10: 0000000000000000 x9 : 0000000000000000 [ 1276.028818][ C0] x8 : 00000001ad7f29ab x7 : 0000000000000000 x6 : fffffffffffc6c79 [ 1276.029402][ C0] x5 : 00000000003b9aca x4 : 0000000000000000 x3 : 0000000000000000 [ 1276.029992][ C0] x2 : 000000000001c9c3 x1 : f9ff80008a8e1610 x0 : fdff0000052159c0 [ 1276.030671][ C0] Call trace: [ 1276.030961][ C0] pie_calculate_probability+0x158/0x228 [ 1276.031394][ C0] call_timer_fn.constprop.0+0x24/0x80 [ 1276.031744][ C0] expire_timers+0x9c/0xd4 [ 1276.032047][ C0] run_timer_softirq+0xf4/0x254 [ 1276.032430][ C0] __do_softirq+0x124/0x290 [ 1276.032787][ C0] ____do_softirq+0x10/0x1c [ 1276.033125][ C0] call_on_irq_stack+0x24/0x4c [ 1276.033485][ C0] do_softirq_own_stack+0x1c/0x2c [ 1276.033857][ C0] irq_exit_rcu+0xd8/0xf4 [ 1276.034163][ C0] el1_interrupt+0x38/0x64 [ 1276.034530][ C0] el1h_64_irq_handler+0x18/0x24 [ 1276.034865][ C0] el1h_64_irq+0x64/0x68 [ 1276.035157][ C0] arch_stack_walk+0xf4/0x270 [ 1276.035507][ C0] stack_trace_save+0x4c/0x78 [ 1276.035848][ C0] kasan_save_stack+0x2c/0x54 [ 1276.036173][ C0] save_stack_info+0x38/0x118 [ 1276.036477][ C0] kasan_save_alloc_info+0x14/0x20 [ 1276.036805][ C0] __kasan_kmalloc+0x9c/0xa8 [ 1276.037151][ C0] __kmalloc_node_track_caller+0x64/0xa8 [ 1276.037529][ C0] kmalloc_reserve+0x90/0x12c [ 1276.037847][ C0] pskb_expand_head+0x84/0x404 [ 1276.038170][ C0] netlink_trim+0x9c/0xe0 [ 1276.038542][ C0] netlink_unicast+0x5c/0x33c [ 1276.038865][ C0] nlmsg_notify+0x70/0x15c [ 1276.039150][ C0] rtnetlink_send+0x20/0x2c [ 1276.039741][ C0] qdisc_notify.isra.0+0xa8/0x12c [ 1276.040096][ C0] qdisc_graft+0x37c/0x5a0 [ 1276.040429][ C0] tc_modify_qdisc+0x388/0x6e8 [ 1276.040775][ C0] rtnetlink_rcv_msg+0x124/0x390 [ 1276.041133][ C0] netlink_rcv_skb+0x5c/0x140 [ 1276.041459][ C0] rtnetlink_rcv+0x18/0x24 [ 1276.041802][ C0] netlink_unicast+0x270/0x33c [ 1276.042144][ C0] netlink_sendmsg+0x1d8/0x444 [ 1276.042509][ C0] sock_sendmsg+0x54/0x60 [ 1276.042805][ C0] ____sys_sendmsg+0x270/0x2ac [ 1276.043138][ C0] ___sys_sendmsg+0x80/0xdc [ 1276.043500][ C0] __sys_sendmsg+0x68/0xc4 [ 1276.043802][ C0] __arm64_sys_sendmsg+0x24/0x30 [ 1276.044101][ C0] invoke_syscall+0x48/0x114 [ 1276.044429][ C0] el0_svc_common.constprop.0+0x44/0xe4 [ 1276.044747][ C0] do_el0_svc+0x38/0xa4 [ 1276.045025][ C0] el0_svc+0x2c/0xb0 [ 1276.045337][ C0] el0t_64_sync_handler+0xc0/0xc4 [ 1276.045671][ C0] el0t_64_sync+0x19c/0x1a0 VM DIAGNOSIS: 00:27:08 Registers: info registers vcpu 0 PC=ffff8000807bcca4 X00=fdff000002ed6880 X01=0000000000000002 X02=ffff8000827dd030 X03=0000000000000030 X04=ffff80008000342f X05=ffff80008263eccf X06=ffff8000807bd4ac X07=205b5d3432323232 X08=6d75642c78756e69 X09=20747269762d796d X10=6d616e2065726177 X11=78756e696c203a65 X12=5b5d343232323230 X13=205d304320202020 X14=0000000000000000 X15=0000000000000020 X16=302e342e36206465 X17=6c6c616b7a79732d X18=00000000fffffffe X19=fdff000002ed6880 X20=ffff80008263ecb8 X21=0000000000000000 X22=0000000000000001 X23=00000000000000c0 X24=000000000000003c X25=ffff8000823be008 X26=0000000000000000 X27=0000000000000001 X28=ffff80008252b368 X29=ffff8000800034f0 X30=ffff8000807bd5e0 SP=ffff8000800034f0 PSTATE=804000c9 N--- EL2h BTYPE=0 FPCR=00000000 FPSR=00000000 P00=0000 P01=0000 P02=0000 P03=0000 P04=0000 P05=0000 P06=0000 P07=0000 P08=0000 P09=0000 P10=0000 P11=0000 P12=0000 P13=0000 P14=0000 P15=0000 FFR=0000 Z00=2525252525252525:2525252525252525 Z01=70756f7267632f2e:0000000064252f2e Z02=70756f7267632f2e:0000000000000000 Z03=0000000000000000:ffffffff00000000 Z04=0000000000000000:ffffffffffffffff Z05=0000000000000000:4010040100100000 Z06=0000000000000000:4010040140100401 Z07=4010040140100401:4010040140100401 Z08=0000000000000000:0000000000000000 Z09=0000000000000000:0000000000000000 Z10=0000000000000000:0000000000000000 Z11=0000000000000000:0000000000000000 Z12=0000000000000000:0000000000000000 Z13=0000000000000000:0000000000000000 Z14=0000000000000000:0000000000000000 Z15=0000000000000000:0000000000000000 Z16=0000555500005510:0000555500005510 Z17=ff00ff0000000000:ff00ff0000000000 Z18=0000000000000000:0000000000000000 Z19=0000000000000000:0000000000000000 Z20=0000000000000000:0000000000000000 Z21=0000000000000000:0000000000000000 Z22=0000000000000000:0000000000000000 Z23=0000000000000000:0000000000000000 Z24=0000000000000000:0000000000000000 Z25=0000000000000000:0000000000000000 Z26=0000000000000000:0000000000000000 Z27=0000000000000000:0000000000000000 Z28=0000000000000000:0000000000000000 Z29=0000000000000000:0000000000000000 Z30=0000000000000000:0000000000000000 Z31=0000000000000000:0000000000000000 info registers vcpu 1 PC=ffff8000814a8cbc X00=fcff0000052161c0 X01=f4ff800089f467f0 X02=0000000000000000 X03=fffffff0a3da8872 X04=0000000000000000 X05=00000000003b9aca X06=fffffffffffc6c79 X07=0000000000000000 X08=00000001ad7f29ab X09=0000000000000000 X10=0000000000000000 X11=0000000000000001 X12=00000000000f4240 X13=00ffffffffffffff X14=0000000000000000 X15=0000000000000002 X16=ffff800080008000 X17=ffff7ffffd60e000 X18=0000000000000378 X19=00000000000077d2 X20=fcff000005216180 X21=fcff0000052161c0 X22=0000000000000070 X23=fcff000005216210 X24=ffff00007ffe80ac X25=0000000000000001 X26=0000000000000005 X27=0000000000000020 X28=f7ff000002d70fc0 X29=ffff80008000be30 X30=ffff8000814a9f20 SP=ffff80008000be30 PSTATE=20400009 --C- EL2h BTYPE=0 FPCR=00000000 FPSR=00000010 P00=0000 P01=0000 P02=0000 P03=0000 P04=0000 P05=0000 P06=0000 P07=0000 P08=0000 P09=0000 P10=0000 P11=0000 P12=0000 P13=0000 P14=0000 P15=0000 FFR=0000 Z00=0000000000000000:0000000000000000 Z01=f00ff00ff00ff00f:f00ff00ff00f0000 Z02=f00ff00ff00ff00f:f00ff00ff00ff00f Z03=ffffffffffffff00:ffffffffffffff00 Z04=f00ff00ff00ff00f:f00ff00ff00ff00f Z05=00ff000000000000:00ff000000000000 Z06=000c0000cccccccc:000c0000cccccccc Z07=0000000000000000:0000000000000000 Z08=0000000000000000:0000000000000000 Z09=0000000000000000:0000000000000000 Z10=0000000000000000:0000000000000000 Z11=0000000000000000:0000000000000000 Z12=0000000000000000:0000000000000000 Z13=0000000000000000:0000000000000000 Z14=0000000000000000:0000000000000000 Z15=0000000000000000:0000000000000000 Z16=0000000000000000:0000000000000000 Z17=0000000000000000:0000000000000000 Z18=0000000000000000:0000000000000000 Z19=0000000000000000:0000000000000000 Z20=0000000000000000:0000000000000000 Z21=0000000000000000:0000000000000000 Z22=0000000000000000:0000000000000000 Z23=0000000000000000:0000000000000000 Z24=0000000000000000:0000000000000000 Z25=0000000000000000:0000000000000000 Z26=0000000000000000:0000000000000000 Z27=0000000000000000:0000000000000000 Z28=0000000000000000:0000000000000000 Z29=0000000000000000:0000000000000000 Z30=0000000000000000:0000000000000000 Z31=0000000000000000:0000000000000000