rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-...!: (10499 ticks this GP) idle=3d2c/1/0x4000000000000000 softirq=9803/9803 fqs=4
rcu: (t=10502 jiffies g=11289 q=814 ncpus=2)
rcu: rcu_preempt kthread starved for 10484 jiffies! g11289 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R running task stack:28240 pid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0xee1/0x59f0 kernel/sched/core.c:6710
schedule+0xe7/0x1b0 kernel/sched/core.c:6786
schedule_timeout+0x157/0x2c0 kernel/time/timer.c:2167
rcu_gp_fqs_loop+0x1ec/0xa50 kernel/rcu/tree.c:1609
rcu_gp_kthread+0x249/0x380 kernel/rcu/tree.c:1808
kthread+0x33a/0x430 kernel/kthread.c:389
ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5104 Comm: kworker/1:5 Not tainted 6.5.0-rc4-syzkaller-01264-gb9b05381e5d7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Workqueue: events_power_efficient gc_worker
RIP: 0010:pie_calculate_probability+0x1fc/0x850 net/sched/sch_pie.c:340
Code: 00 4c 89 fe 48 8b 0c 24 48 89 44 24 10 4c 89 e8 48 29 c8 48 89 44 24 18 48 b8 98 99 99 99 99 99 19 00 48 89 c7 e8 a4 0a 2c f9 <48> b8 98 99 99 99 99 99 19 00 4c 39 f8 0f 82 06 03 00 00 e8 fc 0e
RSP: 0018:ffffc900001e0bc0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc90011175210 RCX: ffffffff885a10fc
RDX: ffff8880254fd940 RSI: 0000000000000100 RDI: 0000000000000007
RBP: ffff888069b31300 R08: 0000000000000007 R09: 0019999999999998
R10: 0000000000000000 R11: 000000000000004e R12: 00000015798ee228
R13: 0000000000000000 R14: 0000000225c17d04 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000080 CR3: 0000000072eae000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
fq_pie_timer+0x1da/0x4f0 net/sched/sch_fq_pie.c:387
call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700
expire_timers kernel/time/timer.c:1751 [inline]
__run_timers+0x764/0xb10 kernel/time/timer.c:2022
run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2035
__do_softirq+0x218/0x965 kernel/softirq.c:553
invoke_softirq kernel/softirq.c:427 [inline]
__irq_exit_rcu kernel/softirq.c:632 [inline]
irq_exit_rcu+0xb7/0x120 kernel/softirq.c:644
sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1109
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:__seqprop_spinlock_sequence include/linux/seqlock.h:275 [inline]
RIP: 0010:nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:343 [inline]
RIP: 0010:gc_worker+0x2e3/0x17f0 net/netfilter/nf_conntrack_core.c:1490
Code: 00 00 48 c7 c7 a8 bb ac 8e e8 49 8b fb f8 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 57 85 1a f9 48 85 db 58 0f 85 a4 10 00 00 b8 89 1a f9 eb 07 e8 b1 89 1a f9 f3 90 44 8b 35 38 25 41 06 31
RSP: 0018:ffffc90003d8fbf0 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff8880254fd940 RSI: ffffffff886ba233 RDI: 0000000000000007
RBP: ffff88801bc00000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 1ffffffff1936359 R12: 0000000000031da0
R13: dffffc0000000000 R14: 0000000000063b3f R15: 0000000000040000
process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2597
worker_thread+0x687/0x1110 kernel/workqueue.c:2748
kthread+0x33a/0x430 kernel/kthread.c:389
ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.649 msecs
CPU: 0 PID: 5379 Comm: syz-executor125 Not tainted 6.5.0-rc4-syzkaller-01264-gb9b05381e5d7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
RIP: 0010:pie_calculate_probability+0x421/0x850 net/sched/sch_pie.c:409
Code: 00 00 8b 44 24 28 4c 89 ee 89 43 3c 4c 8b 65 00 49 d1 ec 4c 89 e7 e8 0e 08 2c f9 4d 39 e5 73 57 e8 f4 0c 2c f9 48 8b 54 24 08 <48> b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 c9 03
RSP: 0018:ffffc90000007bc0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc900117c9370 RCX: 0000000000000100
RDX: ffffc900117c9378 RSI: ffffffff885a131c RDI: 0000000000000006
RBP: ffff888069b32b00 R08: 0000000000000006 R09: 000000000001c9c3
R10: 0000000000000000 R11: 0000000000094000 R12: 000000000001c9c3
R13: 0000000000000000 R14: fffffff0a3da8872 R15: 0000000000000001
FS: 0000555555b35380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555555b35ca8 CR3: 000000002fbff000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
fq_pie_timer+0x1da/0x4f0 net/sched/sch_fq_pie.c:387
call_timer_fn+0x1a0/0x580 kernel/time/timer.c:1700
expire_timers kernel/time/timer.c:1751 [inline]
__run_timers+0x764/0xb10 kernel/time/timer.c:2022
run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2035
__do_softirq+0x218/0x965 kernel/softirq.c:553
invoke_softirq kernel/softirq.c:427 [inline]
__irq_exit_rcu kernel/softirq.c:632 [inline]
irq_exit_rcu+0xb7/0x120 kernel/softirq.c:644
sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1109
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:preempt_latency_start kernel/sched/core.c:5833 [inline]
RIP: 0010:preempt_count_add+0x5e/0x140 kernel/sched/core.c:5859
Code: 08 84 d2 0f 85 d4 00 00 00 8b 15 0d fc ba 10 85 d2 75 0b 65 8b 05 ca 3f aa 7e 3c f4 77 64 65 8b 05 bf 3f aa 7e 25 ff ff ff 7f <39> c3 74 03 5b 5d c3 48 8b 5c 24 10 48 89 df e8 ce 09 0e 00 85 c0
RSP: 0018:ffffc9000317ef18 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 0000000000000001 RCX: 1ffffffff2428eb8
RDX: 0000000000000000 RSI: ffffffff8846ca12 RDI: 0000000000000001
RBP: ffffc9000317efe8 R08: ffffc9000317efd4 R09: ffffffff8fb7b526
R10: ffffc9000317efa0 R11: 000000000007467e R12: ffffffff8173f480
R13: ffffc9000317efa0 R14: 0000000000000000 R15: ffff888069480000
unwind_next_frame+0xad/0x2020 arch/x86/kernel/unwind_orc.c:479
arch_stack_walk+0x8b/0xf0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x96/0xd0 kernel/stacktrace.c:122
save_stack+0x160/0x1f0 mm/page_owner.c:128
__reset_page_owner+0x5a/0x190 mm/page_owner.c:149
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1161 [inline]
free_unref_page_prepare+0x508/0xb90 mm/page_alloc.c:2348
free_unref_page+0x33/0x3b0 mm/page_alloc.c:2443
vfree+0x181/0x7a0 mm/vmalloc.c:2842
kvfree+0x33/0x50 mm/util.c:648
__qdisc_destroy+0xc4/0x450 net/sched/sch_generic.c:1063
qdisc_put+0xd1/0xf0 net/sched/sch_generic.c:1090
notify_and_destroy net/sched/sch_api.c:1047 [inline]
qdisc_graft+0x1122/0x1680 net/sched/sch_api.c:1144
tc_modify_qdisc+0xcd2/0x1bf0 net/sched/sch_api.c:1731
rtnetlink_rcv_msg+0x439/0xd30 net/core/rtnetlink.c:6427
netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2575
netlink_unicast_kernel net/netlink/af_netlink.c:1344 [inline]
netlink_unicast+0x539/0x800 net/netlink/af_netlink.c:1370
netlink_sendmsg+0x93c/0xe40 net/netlink/af_netlink.c:1939
sock_sendmsg_nosec net/socket.c:725 [inline]
sock_sendmsg+0xd9/0x180 net/socket.c:748
____sys_sendmsg+0x6ac/0x940 net/socket.c:2494
___sys_sendmsg+0x135/0x1d0 net/socket.c:2548
__sys_sendmsg+0x117/0x1e0 net/socket.c:2577
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fc1d9b05b09
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 1c 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc367813b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fc1d9b05b09
RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000003
RBP: 00000000000f4240 R08: 00007ffc36781420 R09: 00007ffc36781420
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc367813f0
R13: 0000000000042226 R14: 00007ffc367813e4 R15: 00007ffc36781420