rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P4087/1:b..l
(detected by 0, t=10502 jiffies, g=12285, q=688 ncpus=2)
task:syz.3.159 state:R running task stack:25216 pid:4087 ppid:3647 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5241 [inline]
__schedule+0x143f/0x4570 kernel/sched/core.c:6558
preempt_schedule_common+0x83/0xd0 kernel/sched/core.c:6727
preempt_schedule+0xd9/0xe0 kernel/sched/core.c:6751
preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
_raw_spin_unlock_irqrestore+0x128/0x130 kernel/locking/spinlock.c:194
bpf_lru_pop_free+0x1a1a/0x1ce0
prealloc_lru_pop kernel/bpf/hashtab.c:296 [inline]
htab_lru_map_update_elem+0x214/0x1010 kernel/bpf/hashtab.c:1205
bpf_map_update_value+0x5cf/0x6f0 kernel/bpf/syscall.c:226
generic_map_update_batch+0x579/0x920 kernel/bpf/syscall.c:1699
bpf_map_do_batch+0x4d0/0x620
__sys_bpf+0x658/0x6c0
__do_sys_bpf kernel/bpf/syscall.c:5124 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5122 [inline]
__x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5122
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fcb88d7dff9
RSP: 002b:00007fcb89aa7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fcb88f35f80 RCX: 00007fcb88d7dff9
RDX: 0000000000000038 RSI: 00000000200006c0 RDI: 000000000000001a
RBP: 00007fcb88df0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fcb88f35f80 R15: 00007ffcc97d0d48
rcu: rcu_preempt kthread starved for 10510 jiffies! g12285 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:26712 pid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5241 [inline]
__schedule+0x143f/0x4570 kernel/sched/core.c:6558
schedule+0xbf/0x180 kernel/sched/core.c:6634
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1965
rcu_gp_fqs_loop+0x2d2/0x1150 kernel/rcu/tree.c:1706
rcu_gp_kthread+0xa3/0x3b0 kernel/rcu/tree.c:1905
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 PID: 4711 Comm: syz.1.400 Not tainted 6.1.111-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:rcu_rnp_online_cpus kernel/rcu/tree.c:226 [inline]
RIP: 0010:rcu_rdp_cpu_online kernel/rcu/tree.c:236 [inline]
RIP: 0010:rcu_lockdep_current_cpu_online+0xbb/0x120 kernel/rcu/tree.c:776
Code: 18 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 78 c6 6e 00 48 8b 1b 48 83 c3 70 48 89 d8 48 c1 e8 03 42 80 3c 30 00 <74> 08 48 89 df e8 5b c6 6e 00 4c 23 3b 75 1a 48 c7 c7 80 07 33 8d
RSP: 0018:ffffc900000076d0 EFLAGS: 00000246
RAX: 1ffffffff1a65fde RBX: ffffffff8d32fef0 RCX: 0000000000000102
RDX: ffff88801b778000 RSI: ffffffff8b5d6da0 RDI: ffff8880b8e3b8a0
RBP: ffffc90000007820 R08: ffffffff89600ad3 R09: fffffbfff223b845
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000000ee8
R13: ffff888052b8c400 R14: dffffc0000000000 R15: 0000000000000001
FS: 00007f1284dd26c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffcc76c1fc8 CR3: 000000005f798000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_read_lock_held_common kernel/rcu/update.c:112 [inline]
rcu_read_lock_held+0x1a/0x40 kernel/rcu/update.c:309
nf_hook+0x17c/0x450 include/linux/netfilter.h:229
NF_HOOK_COND include/linux/netfilter.h:290 [inline]
ip6_output+0x26b/0x3b0 net/ipv6/ip6_output.c:237
dst_output include/net/dst.h:444 [inline]
NF_HOOK include/linux/netfilter.h:302 [inline]
ndisc_send_skb+0xbab/0x14e0 net/ipv6/ndisc.c:511
addrconf_rs_timer+0x357/0x610 net/ipv6/addrconf.c:3963
call_timer_fn+0x1ad/0x6b0 kernel/time/timer.c:1504
expire_timers kernel/time/timer.c:1549 [inline]
__run_timers+0x67c/0x890 kernel/time/timer.c:1820
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1833
handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571
__do_softirq kernel/softirq.c:605 [inline]
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu+0x157/0x240 kernel/softirq.c:654
irq_exit_rcu+0x5/0x20 kernel/softirq.c:666
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:migrate_enable+0x18e/0x290 kernel/sched/core.c:2253
Code: f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 d8 7d 83 00 48 c7 c3 d0 b6 03 00 49 03 1e 48 89 d8 48 c1 e8 03 42 0f b6 04 38 <84> c0 0f 85 b6 00 00 00 ff 0b bf 01 00 00 00 e8 9e c3 ff ff 65 8b
RSP: 0018:ffffc9001b37e0a0 EFLAGS: 00000a02
RAX: 0000000000000000 RBX: ffff8880b8e3b6d0 RCX: dffffc0000000000
RDX: ffffc90004a9a000 RSI: ffffffff8b5d6da0 RDI: ffffffff8b5d6d60
RBP: ffffc9001b37e130 R08: ffffffff8194ba75 R09: fffffbfff223b845
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff9200366fc14
R13: ffff88801b778438 R14: ffffffff8cd8b870 R15: dffffc0000000000
bpf_prog_run_array include/linux/bpf.h:1639 [inline]
trace_call_bpf+0x4c1/0x6a0 kernel/trace/bpf_trace.c:135
perf_trace_run_bpf_submit+0x7b/0x1d0 kernel/events/core.c:9969
perf_trace_lock+0x37f/0x440 include/trace/events/lock.h:50
trace_lock_release include/trace/events/lock.h:69 [inline]
lock_release+0x995/0xa20 kernel/locking/lockdep.c:5673
rcu_lock_release include/linux/rcupdate.h:355 [inline]
rcu_read_unlock include/linux/rcupdate.h:824 [inline]
is_bpf_text_address+0x289/0x2a0 kernel/bpf/core.c:733
kernel_text_address+0x9f/0xd0 kernel/extable.c:125
__kernel_text_address+0x9/0x40 kernel/extable.c:79
unwind_get_return_address+0x49/0x80 arch/x86/kernel/unwind_orc.c:323
arch_stack_walk+0xf3/0x140 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
____kasan_kmalloc mm/kasan/common.c:374 [inline]
__kasan_kmalloc+0x97/0xb0 mm/kasan/common.c:383
kasan_kmalloc include/linux/kasan.h:211 [inline]
__do_kmalloc_node mm/slab_common.c:936 [inline]
__kmalloc_node_track_caller+0xb1/0x220 mm/slab_common.c:956
__do_krealloc mm/slab_common.c:1329 [inline]
krealloc+0x61/0xf0 mm/slab_common.c:1362
nf_ct_ext_add+0x19e/0x3d0 net/netfilter/nf_conntrack_extend.c:117
nf_ct_labels_ext_add include/net/netfilter/nf_conntrack_labels.h:45 [inline]
init_conntrack+0x8c7/0x14e0 net/netfilter/nf_conntrack_core.c:1756
resolve_normal_ct net/netfilter/nf_conntrack_core.c:1862 [inline]
nf_conntrack_in+0xf4c/0x1d10 net/netfilter/nf_conntrack_core.c:2017
nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
nf_hook_slow+0xae/0x1e0 net/netfilter/core.c:614
nf_hook+0x2c0/0x450 include/linux/netfilter.h:257
__ip_local_out+0x38b/0x4a0 net/ipv4/ip_output.c:115
ip_local_out net/ipv4/ip_output.c:124 [inline]
__ip_queue_xmit+0x10e7/0x1b60 net/ipv4/ip_output.c:532
__tcp_transmit_skb+0x1e33/0x33a0 net/ipv4/tcp_output.c:1403
tcp_transmit_skb net/ipv4/tcp_output.c:1421 [inline]
tcp_send_syn_data net/ipv4/tcp_output.c:3890 [inline]
tcp_connect+0x2d16/0x4930 net/ipv4/tcp_output.c:3929
tcp_v4_connect+0x1078/0x1af0 net/ipv4/tcp_ipv4.c:330
__inet_stream_connect+0x254/0xf10 net/ipv4/af_inet.c:670
tcp_sendmsg_fastopen+0x39d/0x600 net/ipv4/tcp.c:1207
tcp_sendmsg_locked+0x3adb/0x4100 net/ipv4/tcp.c:1255
tcp_sendmsg+0x2c/0x40 net/ipv4/tcp.c:1490
sock_sendmsg_nosec net/socket.c:718 [inline]
__sock_sendmsg net/socket.c:730 [inline]
____sys_sendmsg+0x5a5/0x8f0 net/socket.c:2514
___sys_sendmsg net/socket.c:2568 [inline]
__sys_sendmsg+0x2a9/0x390 net/socket.c:2597
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f1283f7dff9
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:00007f1284dd2038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f1284135f80 RCX: 00007f1283f7dff9
RDX: 0000000030004081 RSI: 0000000020000080 RDI: 0000000000000012
RBP: 00007f1283ff0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f1284135f80 R15: 00007ffc2eb57088