rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
	(detected by 1, t=10502 jiffies, g=39345, q=437)
rcu: All QSes seen, last rcu_preempt kthread activity 10496 (4294983382-4294972886), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10496 jiffies! g39345 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
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:27360 pid:   15 ppid:     2 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5049 [inline]
 __schedule+0x11bb/0x4390 kernel/sched/core.c:6395
 schedule+0x11b/0x1e0 kernel/sched/core.c:6478
 schedule_timeout+0x15c/0x280 kernel/time/timer.c:1914
 rcu_gp_fqs_loop+0x29e/0x11b0 kernel/rcu/tree.c:1972
 rcu_gp_kthread+0x98/0x350 kernel/rcu/tree.c:2145
 kthread+0x436/0x520 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:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 12452 Comm: syz.1.2137 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:trace_irq_work_entry arch/x86/include/asm/trace/irq_vectors.h:64 [inline]
RIP: 0010:__sysvec_irq_work+0x81/0x240 arch/x86/kernel/irq_work.c:20
Code: 8b 05 3b c5 d7 7e 83 f8 08 73 75 89 c3 c1 e8 06 48 8d 3c c5 a8 35 69 8d be 08 00 00 00 e8 07 e6 91 00 48 0f a3 1d 67 e5 3e 0c <73> 09 e8 e8 60 39 00 84 c0 74 53 65 ff 05 d5 48 d9 7e e8 28 48 59
RSP: 0018:ffffc90000007928 EFLAGS: 00000057
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff812a5039
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8d6935a8
RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff1ad26b6
R10: fffffbfff1ad26b6 R11: 1ffffffff1ad26b5 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
FS:  00007f948f1b46c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001120 CR3: 00000000739cb000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
 sysvec_irq_work+0x4a/0xc0 arch/x86/kernel/irq_work.c:17
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:rcu_read_unlock_special+0x84/0x480 kernel/rcu/tree_plugin.h:674
Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 ed 11 9e 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc90000007a00 EFLAGS: 00000206
RAX: f8848444a3a13200 RBX: 1ffff92000000f44 RCX: f8848444a3a13200
RDX: dffffc0000000000 RSI: ffffffff8a0b1be0 RDI: ffffffff8a59e800
RBP: ffffc90000007ad8 R08: dffffc0000000000 R09: fffffbfff1ff5438
R10: fffffbfff1ff5438 R11: 1ffffffff1ff5437 R12: ffffffff8c120c00
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:772 [inline]
 igmpv3_send_cr net/ipv4/igmp.c:719 [inline]
 igmp_ifc_timer_expire+0xb5f/0xda0 net/ipv4/igmp.c:813
 call_timer_fn+0x16c/0x530 kernel/time/timer.c:1451
 expire_timers kernel/time/timer.c:1496 [inline]
 __run_timers+0x525/0x7c0 kernel/time/timer.c:1767
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780
 handle_softirqs+0x328/0x820 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:659
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 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:preload_this_cpu_lock mm/vmalloc.c:1509 [inline]
RIP: 0010:alloc_vmap_area+0x7cf/0x1b20 mm/vmalloc.c:1549
Code: 89 ef 4c 89 fe e8 51 f4 c6 ff 4d 39 fd 73 25 e8 67 f2 c6 ff 0f 0b 0f b6 5c 24 0f 49 bd 00 00 00 00 00 fc ff df e9 e3 fe ff ff <e8> 4c f2 c6 ff e9 4f fa ff ff 4c 89 6c 24 18 48 8b 44 24 10 48 8d
RSP: 0018:ffffc900031cf8c0 EFLAGS: 00000246
RAX: ffffffff81b0d876 RBX: ffff88806212bcc0 RCX: ffff88801de93b80
RDX: 0000000000000002 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900031cfa28 R08: 0000000000000004 R09: 0000000000000003
R10: fffff52000639f08 R11: 1ffff92000639f08 R12: 0000000000002000
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000001000
 __get_vm_area_node+0x14f/0x2d0 mm/vmalloc.c:2430
 __vmalloc_node_range+0xef/0x8b0 mm/vmalloc.c:3027
 __vmalloc_node mm/vmalloc.c:3087 [inline]
 __vmalloc+0x76/0x80 mm/vmalloc.c:3101
 bpf_prog_alloc_no_stats+0x36/0x2c0 kernel/bpf/core.c:90
 bpf_prog_alloc+0x1a/0x1e0 kernel/bpf/core.c:124
 bpf_prog_load+0x7b3/0x1550 kernel/bpf/syscall.c:2301
 __sys_bpf+0x4c2/0x670 kernel/bpf/syscall.c:4657
 __do_sys_bpf kernel/bpf/syscall.c:4761 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:4759 [inline]
 __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4759
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f9490f4d749
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:00007f948f1b4038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f94911a3fa0 RCX: 00007f9490f4d749
RDX: 0000000000000048 RSI: 0000200000000080 RDI: 0000000000000005
RBP: 00007f9490fd1f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f94911a4038 R14: 00007f94911a3fa0 R15: 00007fffb34ecdc8
 </TASK>