rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 GPs behind) idle=a9b/1/0x4000000000000000 softirq=46733/46734 fqs=3 
	(detected by 1, t=10505 jiffies, g=58353, q=293)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 15251 Comm: syz.8.2565 Not tainted 5.15.178-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:debug_lockdep_rcu_enabled+0x0/0x30 kernel/rcu/update.c:279
Code: 3d 66 cb 03 00 75 e7 48 c7 c7 20 2a ab 8a 48 c7 c6 e0 4e ab 8a e8 40 ca 0c f7 0f 0b eb d0 cc cc cc cc cc cc cc cc cc cc cc cc <31> c0 83 3d 7b 33 cb 03 00 74 1d 83 3d 02 66 cb 03 00 74 14 65 48
RSP: 0018:ffffc90000007cb8 EFLAGS: 00000046
RAX: 33138dc329902a00 RBX: 1ffff1100c439513 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffc90000007c40
RBP: ffff88807ef302e8 R08: dffffc0000000000 R09: 0000000000000003
R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff88807ef30000
R13: ffff88807ef30340 R14: dffffc0000000000 R15: ffff8880621ca898
FS:  00007f2dc38866c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2dc3444000 CR3: 0000000058ed7000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 advance_sched+0x4c/0x940 net/sched/sch_taprio.c:717
 __run_hrtimer kernel/time/hrtimer.c:1688 [inline]
 __hrtimer_run_queues+0x598/0xcf0 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline]
 __sysvec_apic_timer_interrupt+0x13b/0x4b0 arch/x86/kernel/apic/apic.c:1114
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:put_pid+0x1/0x120 kernel/pid.c:106
Code: 8e 80 e1 07 80 c1 03 38 c1 0f 8c 16 fe ff ff 48 c7 c7 78 89 0a 8e e8 7e ed 75 00 e9 05 fe ff ff e8 e4 ce ea 08 cc cc cc cc 55 <41> 57 41 56 53 48 89 fb e8 12 05 2c 00 48 85 db 0f 84 a8 00 00 00
RSP: 0018:ffffc900032af630 EFLAGS: 00000246
RAX: ffffffff891567b7 RBX: 1ffff92000655f00 RCX: 0000000000080000
RDX: ffffc9000ce32000 RSI: 000000000007ffff RDI: 0000000000000000
RBP: ffffc900032af730 R08: ffffffff891567ac R09: ffffed100446cd82
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc900032af800
R13: dffffc0000000000 R14: ffff888022366c08 R15: 1ffff1100446cd81
 scm_destroy_cred include/net/scm.h:67 [inline]
 scm_destroy include/net/scm.h:73 [inline]
 scm_recv+0x3fe/0x720 include/net/scm.h:130
 __unix_dgram_recvmsg+0xca6/0x1260 net/unix/af_unix.c:2381
 ____sys_recvmsg+0x286/0x530
 ___sys_recvmsg+0x1ec/0x690 net/socket.c:2697
 do_recvmmsg+0x36f/0x8f0 net/socket.c:2791
 __sys_recvmmsg net/socket.c:2870 [inline]
 __do_sys_recvmmsg net/socket.c:2893 [inline]
 __se_sys_recvmmsg net/socket.c:2886 [inline]
 __x64_sys_recvmmsg+0x195/0x240 net/socket.c:2886
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f2dc5a3e169
Code: 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 01 48
RSP: 002b:00007f2dc3886038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f2dc5c57080 RCX: 00007f2dc5a3e169
RDX: 0000000000010106 RSI: 00004000000000c0 RDI: 0000000000000006
RBP: 00007f2dc5abf2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f2dc5c57080 R15: 00007ffe60a796a8
 </TASK>
rcu: rcu_preempt kthread starved for 10460 jiffies! g58353 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:26712 pid:   15 ppid:     2 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5027 [inline]
 __schedule+0x12c4/0x45b0 kernel/sched/core.c:6373
 schedule+0x11b/0x1f0 kernel/sched/core.c:6456
 schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1914
 rcu_gp_fqs_loop+0x2bf/0x1080 kernel/rcu/tree.c:1972
 rcu_gp_kthread+0xa4/0x360 kernel/rcu/tree.c:2145
 kthread+0x3f6/0x4f0 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
NMI backtrace for cpu 1
CPU: 1 PID: 15257 Comm: syz.2.2567 Not tainted 5.15.178-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline]
 rcu_check_gp_kthread_starvation+0x1d2/0x240 kernel/rcu/tree_stall.h:487
 print_other_cpu_stall+0x137a/0x14d0 kernel/rcu/tree_stall.h:592
 check_cpu_stall kernel/rcu/tree_stall.h:745 [inline]
 rcu_pending kernel/rcu/tree.c:3932 [inline]
 rcu_sched_clock_irq+0xa38/0x1150 kernel/rcu/tree.c:2619
 update_process_times+0x196/0x200 kernel/time/timer.c:1818
 tick_sched_handle kernel/time/tick-sched.c:254 [inline]
 tick_sched_timer+0x386/0x550 kernel/time/tick-sched.c:1473
 __run_hrtimer kernel/time/hrtimer.c:1688 [inline]
 __hrtimer_run_queues+0x55b/0xcf0 kernel/time/hrtimer.c:1752
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1814
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline]
 __sysvec_apic_timer_interrupt+0x13b/0x4b0 arch/x86/kernel/apic/apic.c:1114
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:csd_lock_wait kernel/smp.c:440 [inline]
RIP: 0010:smp_call_function_many_cond+0xaa1/0xd90 kernel/smp.c:969
Code: 44 89 fe 83 e6 01 31 ff e8 3c d6 0b 00 41 83 e7 01 75 07 e8 d1 d2 0b 00 eb 41 f3 90 48 b8 00 00 00 00 00 fc ff df 0f b6 04 03 <84> c0 75 11 41 f7 45 00 01 00 00 00 74 1e e8 ac d2 0b 00 eb db 44
RSP: 0018:ffffc90002f6f220 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 1ffff110171c8541 RCX: 0000000000080000
RDX: ffffc9000f720000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc90002f6f360 R08: ffffffff8174b2b4 R09: fffffbfff2131822
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: ffff8880b8e42a08 R14: ffff8880b8f3b380 R15: 0000000000000001
 on_each_cpu_cond_mask+0x3b/0x80 kernel/smp.c:1135
 __purge_vmap_area_lazy+0x294/0x1740 mm/vmalloc.c:1683
 _vm_unmap_aliases+0x453/0x4e0 mm/vmalloc.c:2107
 change_page_attr_set_clr+0x308/0x1050 arch/x86/mm/pat/set_memory.c:1740
 change_page_attr_clear arch/x86/mm/pat/set_memory.c:1797 [inline]
 set_memory_ro+0xa1/0xe0 arch/x86/mm/pat/set_memory.c:1943
 bpf_jit_binary_lock_ro include/linux/filter.h:892 [inline]
 bpf_int_jit_compile+0xbf36/0xc6c0 arch/x86/net/bpf_jit_comp.c:2422
 bpf_prog_select_runtime+0x701/0x9f0 kernel/bpf/core.c:1934
 bpf_prog_load+0x131c/0x1b60 kernel/bpf/syscall.c:2357
 __sys_bpf+0x343/0x670 kernel/bpf/syscall.c:4656
 __do_sys_bpf kernel/bpf/syscall.c:4760 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:4758 [inline]
 __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4758
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f79ed80e169
Code: 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 01 48
RSP: 002b:00007f79eb635038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f79eda27160 RCX: 00007f79ed80e169
RDX: 0000000000000080 RSI: 0000400000000680 RDI: 0000000000000005
RBP: 00007f79ed88f2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f79eda27160 R15: 00007ffea754b448
 </TASK>