rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-...!: (1 GPs behind) idle=08a4/1/0x4000000000000000 softirq=143338/143339 fqs=1
	(t=10500 jiffies g=211181 q=334 ncpus=2)
rcu: rcu_preempt kthread starved for 10498 jiffies! g211181 f0x0 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:26960 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5246 [inline]
 __schedule+0x107f/0x4030 kernel/sched/core.c:6563
 schedule+0xb9/0x180 kernel/sched/core.c:6639
 schedule_timeout+0x184/0x2d0 kernel/time/timer.c:2168
 rcu_gp_fqs_loop+0x303/0x1350 kernel/rcu/tree.c:1706
 rcu_gp_kthread+0x99/0x3b0 kernel/rcu/tree.c:1905
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </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: 4028 Comm: syz.1.10037 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:__lock_acquire+0x13f2/0x7ea0 kernel/locking/lockdep.c:-1
Code: 49 b8 00 00 00 00 00 fc ff df 48 83 3b 00 0f 84 90 05 00 00 49 c1 e4 20 48 8b 44 24 50 42 0f b6 04 00 84 c0 0f 85 c6 0a 00 00 <4d> 09 f4 41 8b 07 89 c1 81 e1 00 80 04 00 81 f9 00 00 04 00 0f 85
RSP: 0018:ffffc900000068c0 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffffffff912a0f40 RCX: ffffffff81641859
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff91934248
RBP: ffffc90000006b08 R08: dffffc0000000000 R09: 1ffffffff2326849
R10: dffffc0000000000 R11: fffffbfff232684a R12: c518f9db00000000
R13: ffff888054278000 R14: 00000000ca9d8bd1 R15: ffff888054278c68
FS:  00007f7c7b33f6c0(0000) GS:ffff8880b8c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32120000 CR3: 0000000065da3000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 lock_acquire+0x1bc/0x4a0 kernel/locking/lockdep.c:5790
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xb0/0x100 kernel/locking/spinlock.c:162
 hrtimer_interrupt+0xf4/0x980 kernel/time/hrtimer.c:1858
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1107 [inline]
 __sysvec_apic_timer_interrupt+0x153/0x5a0 arch/x86/kernel/apic/apic.c:1124
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0x4d/0xc0 arch/x86/kernel/apic/apic.c:1118
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:__is_kernel_text include/asm-generic/sections.h:208 [inline]
RIP: 0010:is_kernel_text include/linux/kallsyms.h:29 [inline]
RIP: 0010:core_kernel_text kernel/extable.c:68 [inline]
RIP: 0010:kernel_text_address+0xb/0xd0 kernel/extable.c:99
Code: 93 c1 48 81 fb 78 d8 5e 90 0f 92 c2 20 ca 08 c2 0f b6 c2 5b c3 66 2e 0f 1f 84 00 00 00 00 00 55 41 56 53 48 81 ff 00 00 00 81 <0f> 93 c0 48 81 ff 48 78 60 8a 0f 92 c1 bd 01 00 00 00 84 c8 75 0c
RSP: 0018:ffffc90000006ef8 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffffffff882e1a13 RCX: 0000000000000303
RDX: ffffc90000006f01 RSI: dffffc0000000000 RDI: ffffffff882e1a13
RBP: ffffc90000006fd0 R08: ffffc9000615fdd0 R09: ffffc90000006f98
R10: dffffc0000000000 R11: fffff52000000df5 R12: ffff888054278000
R13: ffff8880187c8000 R14: dffffc0000000000 R15: 1ffff92000000df2
 __kernel_text_address+0x9/0x30 kernel/extable.c:79
 unwind_get_return_address+0x49/0x80 arch/x86/kernel/unwind_orc.c:323
 arch_stack_walk+0xf2/0x140 arch/x86/kernel/stacktrace.c:26
 stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
 __kasan_slab_alloc+0x6b/0x80 mm/kasan/common.c:329
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook+0x4b/0x490 mm/slab.h:737
 slab_alloc_node mm/slub.c:3359 [inline]
 slab_alloc mm/slub.c:3367 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3374 [inline]
 kmem_cache_alloc+0x18b/0x2f0 mm/slub.c:3383
 skb_clone+0x1e7/0x370 net/core/skbuff.c:1663
 dev_queue_xmit_nit+0x23b/0xba0 net/core/dev.c:2334
 xmit_one net/core/dev.c:3691 [inline]
 dev_hard_start_xmit+0x158/0x8b0 net/core/dev.c:3711
 sch_direct_xmit+0x24d/0x4a0 net/sched/sch_generic.c:345
 __dev_xmit_skb net/core/dev.c:3932 [inline]
 __dev_queue_xmit+0x180d/0x3810 net/core/dev.c:4337
 NF_HOOK+0x32d/0x3b0 include/linux/netfilter.h:-1
 arp_xmit+0x168/0x260 net/ipv4/arp.c:664
 arp_solicit+0xbef/0xe10 net/ipv4/arp.c:392
 neigh_probe net/core/neighbour.c:1080 [inline]
 neigh_timer_handler+0xaba/0x1090 net/core/neighbour.c:1162
 call_timer_fn+0x1ac/0x670 kernel/time/timer.c:1701
 expire_timers kernel/time/timer.c:1752 [inline]
 __run_timers+0x56c/0x810 kernel/time/timer.c:2023
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:2036
 handle_softirqs+0x291/0x910 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:check_kcov_mode kernel/kcov.c:189 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:241 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x32/0x80 kernel/kcov.c:309
Code: 54 25 80 7e 65 8b 0d 55 25 80 7e 81 e1 00 01 ff 00 74 11 81 f9 00 01 00 00 75 5b 83 ba 1c 16 00 00 00 74 52 8b 8a f8 15 00 00 <83> f9 03 75 47 48 8b 8a 00 16 00 00 44 8b 8a fc 15 00 00 49 c1 e1
RSP: 0018:ffffc9000615e198 EFLAGS: 00000246
RAX: ffffffff818bf5b9 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff888054278000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000615e298 R08: dffffc0000000000 R09: 1ffffffff2326848
R10: dffffc0000000000 R11: fffffbfff2326849 R12: ffffffff8d7f96c0
R13: 1ffff92000c2bc40 R14: ffff888076ae7f80 R15: 0000000000000000
 trace_call_bpf+0x1a9/0x6b0 kernel/trace/bpf_trace.c:135
 perf_trace_run_bpf_submit+0x79/0x1c0 kernel/events/core.c:10037
 perf_trace_lock_acquire+0x342/0x3f0 include/trace/events/lock.h:24
 trace_lock_acquire include/trace/events/lock.h:24 [inline]
 lock_acquire+0x452/0x4a0 kernel/locking/lockdep.c:5761
 rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
 srcu_read_lock+0x32/0x40 include/linux/srcu.h:165
 kasan_quarantine_reduce+0x43/0x160 mm/kasan/quarantine.c:267
 __kasan_slab_alloc+0x1e/0x80 mm/kasan/common.c:306
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook+0x4b/0x490 mm/slab.h:737
 slab_alloc_node mm/slub.c:3359 [inline]
 kmem_cache_alloc_node+0x1ad/0x310 mm/slub.c:3404
 __alloc_skb+0xf9/0x7d0 net/core/skbuff.c:505
 alloc_skb include/linux/skbuff.h:1303 [inline]
 nlmsg_new include/net/netlink.h:998 [inline]
 rtmsg_fib+0xd7/0x440 net/ipv4/fib_semantics.c:553
 fib_table_insert+0xd52/0x1af0 net/ipv4/fib_trie.c:1385
 fib_magic+0x2ca/0x3b0 net/ipv4/fib_frontend.c:1118
 fib_add_ifaddr+0x372/0x5c0 net/ipv4/fib_frontend.c:1155
 fib_netdev_event+0x361/0x470 net/ipv4/fib_frontend.c:1500
 notifier_call_chain kernel/notifier.c:87 [inline]
 raw_notifier_call_chain+0xcb/0x160 kernel/notifier.c:455
 call_netdevice_notifiers_extack net/core/dev.c:2052 [inline]
 call_netdevice_notifiers net/core/dev.c:2066 [inline]
 dev_open+0x10c/0x190 net/core/dev.c:1542
 team_port_add drivers/net/team/team.c:1227 [inline]
 team_add_slave+0x6bd/0x2820 drivers/net/team/team.c:2002
 do_set_master net/core/rtnetlink.c:2642 [inline]
 do_setlink+0xd66/0x29c0 net/core/rtnetlink.c:2852
 __rtnl_newlink net/core/rtnetlink.c:3622 [inline]
 rtnl_newlink+0x16e4/0x1f90 net/core/rtnetlink.c:3669
 rtnetlink_rcv_msg+0x863/0xfb0 net/core/rtnetlink.c:6166
 netlink_rcv_skb+0x1ef/0x440 net/netlink/af_netlink.c:2516
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x7ad/0x920 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x8ad/0xbd0 net/netlink/af_netlink.c:1877
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:730 [inline]
 ____sys_sendmsg+0x5ed/0x9a0 net/socket.c:2519
 ___sys_sendmsg+0x2a2/0x360 net/socket.c:2573
 __sys_sendmsg net/socket.c:2602 [inline]
 __do_sys_sendmsg net/socket.c:2611 [inline]
 __se_sys_sendmsg+0x1c3/0x2b0 net/socket.c:2609
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f7c7a39e559
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7c7b33f028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f7c7a625fa0 RCX: 00007f7c7a39e559
RDX: 0000000000000000 RSI: 0000200000000500 RDI: 0000000000000007
RBP: 00007f7c7a4358b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7c7a626038 R14: 00007f7c7a625fa0 R15: 00007fff80508918
 </TASK>
CPU: 1 PID: 4037 Comm: syz.3.10040 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xbc/0x120 kernel/locking/spinlock.c:194
Code: c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f7 44 24 20 00 02 00 00 41 c6 04 07 f8 75 4b f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> ff c7 1a f7 65 8b 05 c0 77 c4 75 85 c0 74 3c 48 c7 04 24 0e 36
RSP: 0018:ffffc900001e0840 EFLAGS: 00000206
RAX: dffffc0000000004 RBX: 0000000000000a02 RCX: 5c8797a72f250a00
RDX: dffffc0000000000 RSI: ffffffff8a8c19a0 RDI: 0000000000000001
RBP: ffffc900001e08d0 R08: ffffffff91934307 R09: 1ffffffff2326860
R10: dffffc0000000000 R11: fffffbfff2326861 R12: dffffc0000000000
R13: ffff8880587e8000 R14: ffffffff97d47820 R15: 1ffff9200003c108
FS:  00007f8bad9176c0(0000) GS:ffff8880b8d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c294165 CR3: 0000000029151000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __debug_check_no_obj_freed lib/debugobjects.c:1054 [inline]
 debug_check_no_obj_freed+0x471/0x520 lib/debugobjects.c:1075
 free_pages_prepare mm/page_alloc.c:1493 [inline]
 free_pcp_prepare mm/page_alloc.c:1537 [inline]
 free_unref_page_prepare+0x2c3/0x9e0 mm/page_alloc.c:3414
 free_unref_page+0x2e/0x3f0 mm/page_alloc.c:3509
 __skb_frag_unref include/linux/skbuff.h:3491 [inline]
 skb_release_data+0x4a7/0x7e0 net/core/skbuff.c:785
 skb_release_all net/core/skbuff.c:856 [inline]
 __kfree_skb+0x4c/0x60 net/core/skbuff.c:870
 tcp_write_queue_purge+0x13c/0x300 net/ipv4/tcp.c:3123
 tcp_done_with_error+0x3f/0xc0 net/ipv4/tcp_input.c:4408
 tcp_write_err net/ipv4/tcp_timer.c:70 [inline]
 tcp_probe_timer net/ipv4/tcp_timer.c:396 [inline]
 tcp_write_timer_handler+0x649/0x8f0 net/ipv4/tcp_timer.c:663
 tcp_write_timer+0x126/0x280 net/ipv4/tcp_timer.c:676
 call_timer_fn+0x1ac/0x670 kernel/time/timer.c:1701
 expire_timers kernel/time/timer.c:1752 [inline]
 __run_timers+0x56c/0x810 kernel/time/timer.c:2023
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:2036
 handle_softirqs+0x291/0x910 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:jhash2 include/linux/jhash.h:137 [inline]
RIP: 0010:__bpf_get_stackid+0x299/0x920 kernel/bpf/stackmap.c:234
Code: 03 48 ba 00 00 00 00 00 fc ff df 0f b6 04 10 84 c0 0f 85 34 06 00 00 45 03 34 24 4c 8d 63 04 4c 89 e0 48 c1 e8 03 0f b6 04 10 <84> c0 0f 85 50 05 00 00 41 03 2c 24 eb 0f e8 e4 76 df ff 48 ba 00
RSP: 0018:ffffc900061cf678 EFLAGS: 00000a03
RAX: 0000000000000000 RBX: ffff88803d138008 RCX: 0000000000080000
RDX: dffffc0000000000 RSI: 0000000000000fff RDI: 0000000000001000
RBP: 00000000deadbef7 R08: ffff888026b18000 R09: 0000000000000004
R10: 0000000000000003 R11: 0000000000000002 R12: ffff88803d13800c
R13: 0000000000000001 R14: 00000000deadbef7 R15: 00000000deadbef7
 bpf_prog_e95a4a16f042d2d7+0x21/0x25
 bpf_dispatcher_nop_func include/linux/bpf.h:1013 [inline]
 __bpf_prog_run include/linux/filter.h:608 [inline]
 bpf_prog_run include/linux/filter.h:615 [inline]
 bpf_prog_run_array include/linux/bpf.h:1669 [inline]
 trace_call_bpf+0x322/0x6b0 kernel/trace/bpf_trace.c:135
 perf_trace_run_bpf_submit+0x79/0x1c0 kernel/events/core.c:10037
 perf_trace_lock_acquire+0x342/0x3f0 include/trace/events/lock.h:24
 trace_lock_acquire include/trace/events/lock.h:24 [inline]
 lock_acquire+0x452/0x4a0 kernel/locking/lockdep.c:5761
 rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
 rcu_read_lock include/linux/rcupdate.h:791 [inline]
 get_mem_cgroup_from_objcg+0x35/0x150 include/linux/memcontrol.h:520
 obj_cgroup_charge_pages mm/memcontrol.c:3097 [inline]
 __memcg_kmem_charge_page+0x210/0x380 mm/memcontrol.c:3125
 __alloc_pages+0x21e/0x4f0 mm/page_alloc.c:5675
 __alloc_pages_node include/linux/gfp.h:237 [inline]
 alloc_pages_node include/linux/gfp.h:260 [inline]
 __kmalloc_large_node+0x8c/0x1f0 mm/slab_common.c:1077
 __do_kmalloc_node mm/slab_common.c:924 [inline]
 __kmalloc_node+0x111/0x240 mm/slab_common.c:943
 kmalloc_node include/linux/slab.h:589 [inline]
 __bpf_map_area_alloc kernel/bpf/syscall.c:328 [inline]
 bpf_map_area_alloc+0x47/0xe0 kernel/bpf/syscall.c:341
 array_map_alloc+0x286/0x6f0 kernel/bpf/arraymap.c:141
 find_and_alloc_map kernel/bpf/syscall.c:133 [inline]
 map_create+0x524/0xff0 kernel/bpf/syscall.c:1149
 __sys_bpf+0x38b/0x780 kernel/bpf/syscall.c:5017
 __do_sys_bpf kernel/bpf/syscall.c:5139 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5137 [inline]
 __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5137
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f8bac99e559
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8bad917028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f8bacc25fa0 RCX: 00007f8bac99e559
RDX: 0000000000000048 RSI: 0000200000000340 RDI: 0000000000000000
RBP: 00007f8baca358b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8bacc26038 R14: 00007f8bacc25fa0 R15: 00007ffc2888dc38
 </TASK>