rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...!: (2 ticks this GP) idle=a624/1/0x4000000000000000 softirq=6586/6586 fqs=6
rcu: (detected by 1, t=10506 jiffies, g=7657, q=722 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4810 Comm: kworker/0:3 Not tainted 6.8.0-rc6-syzkaller-00120-g87adedeba51a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Workqueue: events_power_efficient gc_worker
RIP: 0010:raw_atomic_try_cmpxchg_acquire include/linux/atomic/atomic-arch-fallback.h:2164 [inline]
RIP: 0010:atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1296 [inline]
RIP: 0010:queued_spin_lock include/asm-generic/qspinlock.h:111 [inline]
RIP: 0010:do_raw_spin_lock+0x16e/0x370 kernel/locking/spinlock_debug.c:116
Code: be 04 00 00 00 e8 32 15 83 00 41 0f b6 44 1d 00 84 c0 48 89 da 0f 85 8d 01 00 00 8b 44 24 60 b9 01 00 00 00 f0 41 0f b1 0c 24 <0f> 85 df 00 00 00 65 8b 1d 71 46 91 7e 41 0f b6 04 17 84 c0 0f 85
RSP: 0018:ffffc90000007ba0 EFLAGS: 00000046
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffc90000007c00
RBP: ffffc90000007c80 R08: 0000000000000003 R09: fffff52000000f80
R10: dffffc0000000000 R11: fffff52000000f80 R12: ffff8880704422e8
R13: 1ffff92000000f80 R14: ffffc90000007c00 R15: 1ffff1100e08845e
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3f4adf4110 CR3: 00000000111da000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
spin_lock include/linux/spinlock.h:351 [inline]
advance_sched+0xab/0xca0 net/sched/sch_taprio.c:935
__run_hrtimer kernel/time/hrtimer.c:1689 [inline]
__hrtimer_run_queues+0x594/0xd00 kernel/time/hrtimer.c:1753
hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1815
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline]
__sysvec_apic_timer_interrupt+0x107/0x3a0 arch/x86/kernel/apic/apic.c:1082
sysvec_apic_timer_interrupt+0x92/0xb0 arch/x86/kernel/apic/apic.c:1076
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:seqcount_lockdep_reader_access+0x1e0/0x220 include/linux/seqlock.h:75
Code: f8 4d 85 ed 75 16 e8 ff b9 0c f8 eb 15 e8 f8 b9 0c f8 e8 63 8b e0 01 4d 85 ed 74 ea e8 e9 b9 0c f8 fb 48 c7 04 24 0e 36 e0 45 <4b> c7 04 3c 00 00 00 00 66 43 c7 44 3c 09 00 00 43 c6 44 3c 0b 00
RSP: 0018:ffffc900036079e0 EFLAGS: 00000293
RAX: ffffffff8986b367 RBX: 0000000000000000 RCX: ffff88807daed940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90003607a90 R08: ffffffff8986b33d R09: 1ffffffff2591a96
R10: dffffc0000000000 R11: fffffbfff2591a97 R12: dffffc0000000000
R13: 0000000000000200 R14: 0000000000000046 R15: 1ffff920006c0f3c
nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:345 [inline]
gc_worker+0x316/0x15a0 net/netfilter/nf_conntrack_core.c:1490
process_one_work kernel/workqueue.c:2633 [inline]
process_scheduled_works+0x913/0x1420 kernel/workqueue.c:2706
worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787
kthread+0x2ef/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.261 msecs
rcu: rcu_preempt kthread starved for 9127 jiffies! g7657 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:24176 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x17d1/0x49f0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
schedule_timeout+0x1bd/0x310 kernel/time/timer.c:2183
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:1663
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:1862
kthread+0x2ef/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 PID: 5124 Comm: syz-executor333 Not tainted 6.8.0-rc6-syzkaller-00120-g87adedeba51a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0010:csd_lock_wait kernel/smp.c:311 [inline]
RIP: 0010:smp_call_function_many_cond+0x1850/0x2960 kernel/smp.c:855
Code: 45 8b 65 00 44 89 e6 83 e6 01 31 ff e8 99 d4 0b 00 41 83 e4 01 49 bc 00 00 00 00 00 fc ff df 75 07 e8 44 d0 0b 00 eb 38 f3 90 <42> 0f b6 04 23 84 c0 75 11 41 f7 45 00 01 00 00 00 74 1e e8 28 d0
RSP: 0018:ffffc90003e47420 EFLAGS: 00000293
RAX: ffffffff81879d28 RBX: 1ffff11017288899 RCX: ffff88807e5dd940
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90003e47620 R08: ffffffff81879cf7 R09: 1ffffffff2591a8a
R10: dffffc0000000000 R11: fffffbfff2591a8b R12: dffffc0000000000
R13: ffff8880b94444c8 R14: ffff8880b953da80 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055dc12ee61b0 CR3: 000000000df32000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1023
__flush_tlb_multi arch/x86/include/asm/paravirt.h:91 [inline]
flush_tlb_multi arch/x86/mm/tlb.c:944 [inline]
flush_tlb_mm_range+0x330/0x5c0 arch/x86/mm/tlb.c:1030
tlb_flush arch/x86/include/asm/tlb.h:20 [inline]
tlb_flush_mmu_tlbonly include/asm-generic/tlb.h:458 [inline]
tlb_flush_mmu+0x1a6/0x4e0 mm/mmu_gather.c:299
tlb_finish_mmu+0xd4/0x200 mm/mmu_gather.c:392
exit_mmap+0x4b6/0xd40 mm/mmap.c:3292
__mmput+0x115/0x3c0 kernel/fork.c:1343
exit_mm+0x21f/0x310 kernel/exit.c:569
do_exit+0x9af/0x2740 kernel/exit.c:858
do_group_exit+0x206/0x2c0 kernel/exit.c:1020
get_signal+0x176d/0x1850 kernel/signal.c:2893
arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
syscall_exit_to_user_mode+0xc8/0x360 kernel/entry/common.c:212
do_syscall_64+0x108/0x240 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f3f4ad6c8f9
Code: Unable to access opcode bytes at 0x7f3f4ad6c8cf.
RSP: 002b:00007f3f4ad26218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f3f4adfc1c8 RCX: 00007f3f4ad6c8f9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f3f4adfc1c8
RBP: 00007f3f4adfc1c0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3f4adfc1cc
R13: 00007f3f4adc2670 R14: 0000000800000003 R15: 0400088001000c80