rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-...!: (1 GPs behind) idle=02f/1/0x4000000000000000 softirq=81929/81930 fqs=0 
	(t=10501 jiffies g=128293 q=118)
rcu: rcu_preempt kthread starved for 10502 jiffies! g128293 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:26400 pid:   15 ppid:     2 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5026 [inline]
 __schedule+0x12c4/0x4590 kernel/sched/core.c:6372
 schedule+0x11b/0x1f0 kernel/sched/core.c:6455
 schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1884
 rcu_gp_fqs_loop+0x2af/0xf70 kernel/rcu/tree.c:1958
 rcu_gp_kthread+0xa4/0x360 kernel/rcu/tree.c:2131
 kthread+0x3f6/0x4f0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2337 Comm: syz-executor.1 Not tainted 5.15.106-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:debug_lockdep_rcu_enabled+0x14/0x30 kernel/rcu/update.c:281
Code: 8a e8 d0 af 34 f7 0f 0b eb d0 cc cc cc cc cc cc cc cc cc cc cc cc 31 c0 83 3d fb 2e cc 03 00 74 1d 83 3d 72 61 cc 03 00 74 14 <65> 48 8b 0d a4 82 eb 75 31 c0 83 b9 1c 0a 00 00 00 0f 94 c0 c3 cc
RSP: 0018:ffffc90003cef8f8 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffffffff8825d100 RCX: 1ffff9200079de9c
RDX: dffffc0000000000 RSI: ffffffff8a8b0380 RDI: ffffffff8ad85140
RBP: ffffc90003cef9b8 R08: dffffc0000000000 R09: fffffbfff1f76e15
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90000d20000
R13: ffffc90003cef940 R14: dffffc0000000000 R15: 0000000000000000
FS:  00007fa89b893700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020404030 CR3: 0000000082c15000 CR4: 00000000003506e0
DR0: 00000000ffff070c DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 rcu_read_lock include/linux/rcupdate.h:697 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:1868 [inline]
 bpf_trace_run2+0xdc/0x340 kernel/trace/bpf_trace.c:1906
 __bpf_trace_kfree+0x6e/0x90 include/trace/events/kmem.h:118
 __traceiter_kfree+0x26/0x40 include/trace/events/kmem.h:118
 trace_kfree include/trace/events/kmem.h:118 [inline]
 kfree+0x22f/0x270 mm/slub.c:4549
 ___sys_recvmsg+0x210/0x690 net/socket.c:2674
 do_recvmmsg+0x36f/0x8f0 net/socket.c:2767
 __sys_recvmmsg net/socket.c:2846 [inline]
 __do_sys_recvmmsg net/socket.c:2869 [inline]
 __se_sys_recvmmsg net/socket.c:2862 [inline]
 __x64_sys_recvmmsg+0x195/0x240 net/socket.c:2862
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fa89d363169
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa89b893168 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007fa89d483120 RCX: 00007fa89d363169
RDX: 0000000000010106 RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00007fa89d3beca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe39d2308f R14: 00007fa89b893300 R15: 0000000000022000
 </TASK>
NMI backtrace for cpu 0
CPU: 0 PID: 2340 Comm: syz-executor.4 Not tainted 5.15.106-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb 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_dump_cpu_stacks+0x223/0x390 kernel/rcu/tree_stall.h:343
 print_cpu_stall kernel/rcu/tree_stall.h:627 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:711 [inline]
 rcu_pending kernel/rcu/tree.c:3887 [inline]
 rcu_sched_clock_irq+0xf26/0x1770 kernel/rcu/tree.c:2605
 update_process_times+0x196/0x200 kernel/time/timer.c:1788
 tick_sched_handle kernel/time/tick-sched.c:226 [inline]
 tick_sched_timer+0x22d/0x3c0 kernel/time/tick-sched.c:1420
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x55b/0xcf0 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
 __sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1103
 sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1097
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:finish_lock_switch+0x91/0x100 kernel/sched/core.c:4781
Code: 45 31 c9 68 f7 1f 59 81 e8 2c 17 09 00 48 83 c4 08 4c 89 ff e8 40 d9 fe ff 66 90 4c 89 ff e8 f6 1a c7 08 e8 61 08 2d 00 fb 5b <41> 5c 41 5d 41 5e 41 5f c3 44 89 f1 80 e1 07 80 c1 03 38 c1 7c 87
RSP: 0000:ffffc900039ff218 EFLAGS: 00000282
RAX: f0c3a9fc60fd0a00 RBX: ffff888033ca8034 RCX: ffffffff8162a4d8
RDX: dffffc0000000000 RSI: ffffffff8a8af0e0 RDI: ffffffff8ad85140
RBP: ffffc900039ff290 R08: dffffc0000000000 R09: fffffbfff1f76e2a
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff1101734747b R14: ffff8880b9a3a3d8 R15: ffff8880b9a39680
 finish_task_switch+0x134/0x630 kernel/sched/core.c:4898
 context_switch kernel/sched/core.c:5029 [inline]
 __schedule+0x12cc/0x4590 kernel/sched/core.c:6372
 preempt_schedule_common+0x83/0xd0 kernel/sched/core.c:6548
 preempt_schedule+0xd9/0xe0 kernel/sched/core.c:6573
 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34
 __mutex_lock_common+0x45a/0x25a0 kernel/locking/mutex.c:604
 __mutex_lock kernel/locking/mutex.c:729 [inline]
 mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
 __unix_dgram_recvmsg+0x24d/0x1260 net/unix/af_unix.c:2314
 ____sys_recvmsg+0x286/0x530
 ___sys_recvmsg+0x1ec/0x690 net/socket.c:2673
 do_recvmmsg+0x36f/0x8f0 net/socket.c:2767
 __sys_recvmmsg net/socket.c:2846 [inline]
 __do_sys_recvmmsg net/socket.c:2869 [inline]
 __se_sys_recvmmsg net/socket.c:2862 [inline]
 __x64_sys_recvmmsg+0x195/0x240 net/socket.c:2862
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f728274f169
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7280ca0168 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f728286f050 RCX: 00007f728274f169
RDX: 0000000000010106 RSI: 00000000200000c0 RDI: 0000000000000005
RBP: 00007f72827aaca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd917a347f R14: 00007f7280ca0300 R15: 0000000000022000
 </TASK>