rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2645 jiffies s: 108917 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 27103 Comm: syz.0.6923 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:rdtsc_ordered arch/x86/include/asm/msr.h:215 [inline]
RIP: 0010:pvclock_clocksource_read+0xe7/0x760 arch/x86/kernel/pvclock.c:76
Code: df 48 89 54 24 38 4c 89 74 24 28 42 0f b6 04 22 84 c0 0f 85 45 01 00 00 43 0f b6 04 26 84 c0 0f 85 7f 01 00 00 8b 1f 0f 01 f9 <66> 90 48 89 d5 48 8b 8c 24 90 00 00 00 42 0f b6 0c 21 84 c9 0f 85
RSP: 0018:ffffc900000076c0 EFLAGS: 00000046
RAX: 00000000deed7a97 RBX: 000000000000000e RCX: 0000000000000000
RDX: 00000000000002bf RSI: ffffffff8fa0e01c RDI: ffffffff8fa0e000
RBP: ffffc90000007898 R08: ffffffff8fa0e008 R09: ffffffff8fa0e018
R10: ffffffff8fa0e010 R11: ffffffff8fa0e003 R12: dffffc0000000000
R13: ffff88807e536a98 R14: 1ffffffff1f41c00 R15: 0000000000000001
FS:  00007f9b4dc7f6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001000 CR3: 000000005d4a2000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000008d24
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 kvm_clock_read arch/x86/kernel/kvmclock.c:79 [inline]
 kvm_sched_clock_read+0x14/0x40 arch/x86/kernel/kvmclock.c:91
 __bpf_prog_run include/linux/filter.h:598 [inline]
 bpf_prog_run include/linux/filter.h:614 [inline]
 bpf_prog_run_array include/linux/bpf.h:1668 [inline]
 trace_call_bpf+0x3a4/0x6b0 kernel/trace/bpf_trace.c:135
 perf_trace_run_bpf_submit+0x79/0x1c0 kernel/events/core.c:10027
 perf_trace_preemptirq_template+0x268/0x320 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0xd3/0x140 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x24/0x40 kernel/trace/trace_preemptirq.c:44
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:728
RIP: 0010:rcu_read_unlock_special+0x7f/0x510 kernel/rcu/tree_plugin.h:685
Code: eb 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4a 89 04 2b 42 c7 44 2b 08 f8 f3 f3 f3 65 44 8b 35 d2 33 95 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc90000007ac0 EFLAGS: 00000206
RAX: bd65b58b457f1500 RBX: 1ffff92000000f60 RCX: bd65b58b457f1500
RDX: dffffc0000000000 RSI: ffffffff8a8c1120 RDI: ffffffff8adf1320
RBP: ffffc90000007bb0 R08: ffffffff90af9347 R09: 1ffffffff215f268
R10: dffffc0000000000 R11: fffffbfff215f269 R12: 0000000000000246
R13: dffffc0000000000 R14: ffff8880b8e3b900 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 ieee80211_iterate_active_interfaces_atomic+0x156/0x170 net/mac80211/util.c:826
 mac80211_hwsim_beacon+0xb7/0x1b0 drivers/net/wireless/mac80211_hwsim.c:2147
 __run_hrtimer kernel/time/hrtimer.c:1747 [inline]
 __hrtimer_run_queues+0x54a/0xd50 kernel/time/hrtimer.c:1811
 hrtimer_run_softirq+0x183/0x2a0 kernel/time/hrtimer.c:1828
 handle_softirqs+0x2a1/0x930 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:___slab_alloc+0x393/0x1240 mm/slub.c:3107
Code: 48 c7 44 24 70 00 00 00 00 9c 8f 44 24 70 f7 44 24 70 00 02 00 00 0f 85 de 02 00 00 f7 c5 00 02 00 00 74 01 fb 49 83 7d 18 00 <0f> 84 6c 05 00 00 48 c7 44 24 70 00 00 00 00 9c 8f 44 24 70 48 8b
RSP: 0018:ffffc90003377a10 EFLAGS: 00000286
RAX: bd65b58b457f1500 RBX: ffff888017441b40 RCX: bd65b58b457f1500
RDX: dffffc0000000000 RSI: ffffffff8a8c1120 RDI: ffffffff8adf1320
RBP: 0000000000000246 R08: ffffffff90af9347 R09: 1ffffffff215f268
R10: dffffc0000000000 R11: fffffbfff215f269 R12: ffff888056f48000
R13: ffff8880b8e3e720 R14: ffffffff7fff0000 R15: ffff8880b8e3e740
 __slab_alloc mm/slub.c:3240 [inline]
 slab_alloc_node mm/slub.c:3325 [inline]
 __kmem_cache_alloc_node+0x1a0/0x260 mm/slub.c:3398
 kmalloc_trace+0x26/0xe0 mm/slab_common.c:1026
 kmalloc include/linux/slab.h:563 [inline]
 kzalloc include/linux/slab.h:699 [inline]
 subflow_create_ctx net/mptcp/subflow.c:1662 [inline]
 subflow_ulp_init+0x91/0x530 net/mptcp/subflow.c:1808
 __tcp_set_ulp net/ipv4/tcp_ulp.c:146 [inline]
 tcp_set_ulp+0x532/0x5e0 net/ipv4/tcp_ulp.c:167
 mptcp_subflow_create_socket+0x609/0xad0 net/mptcp/subflow.c:1627
 __mptcp_socket_create net/mptcp/protocol.c:115 [inline]
 mptcp_init_sock+0x12e/0x820 net/mptcp/protocol.c:2945
 inet_create+0xcd0/0x1040 net/ipv4/af_inet.c:379
 __sock_create+0x4a2/0x940 net/socket.c:1549
 sock_create net/socket.c:1605 [inline]
 __sys_socket_create net/socket.c:1642 [inline]
 __sys_socket+0xc4/0x190 net/socket.c:1670
 __do_sys_socket net/socket.c:1683 [inline]
 __se_sys_socket net/socket.c:1681 [inline]
 __x64_sys_socket+0x76/0x80 net/socket.c:1681
 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: 0033:0x7f9b4cd9cdd9
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:00007f9b4dc7f028 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 00007f9b4d015fa0 RCX: 00007f9b4cd9cdd9
RDX: 0000000000000106 RSI: 0200000000000001 RDI: 0000000000000002
RBP: 00007f9b4ce32d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9b4d016038 R14: 00007f9b4d015fa0 R15: 00007ffd90230b68
 </TASK>