rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 0, t=10504 jiffies, g=263073, q=580 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10492 (4295131683-4295121191), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10492 jiffies! g263073 f0x2 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:27544 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5388 [inline]
 __schedule+0x17b4/0x5680 kernel/sched/core.c:7189
 __schedule_loop kernel/sched/core.c:7268 [inline]
 schedule+0x164/0x360 kernel/sched/core.c:7283
 schedule_timeout+0x158/0x2c0 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x312/0x11d0 kernel/rcu/tree.c:2095
 rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2297
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </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 UID: 0 PID: 4180 Comm: syz.8.8014 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:get_current arch/x86/include/asm/current.h:25 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x70 kernel/kcov.c:216
Code: 8b 3d a4 a0 60 0c 48 89 de 5b e9 b3 ea 5f 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 0d 88 70 73 11 65 8b 15 a9 70 73 11 81 e2 00 01 ff 00 74
RSP: 0018:ffffc90000a08cc8 EFLAGS: 00000046
RAX: ffffffff897c9f37 RBX: ffff88809f3e5000 RCX: 0000000000010000
RDX: ffff88802f8c3d80 RSI: 0000000000000001 RDI: 0000000000000002
RBP: 0000000000000000 R08: ffff88809f3e519f R09: 1ffff11013e7ca33
R10: dffffc0000000000 R11: ffffed1013e7ca34 R12: ffff88803b2c7400
R13: dffffc0000000000 R14: ffff88809f3e5208 R15: 18adafea58fa37b7
FS:  00007f67fd4286c0(0000) GS:ffff88812538d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd25d7ea4c0 CR3: 000000009f885000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __netif_schedule+0x87/0x200 net/core/dev.c:3403
 advance_sched+0xa3d/0xc20 net/sched/sch_taprio.c:993
 __run_hrtimer kernel/time/hrtimer.c:1930 [inline]
 __hrtimer_run_queues+0x3c0/0xa20 kernel/time/hrtimer.c:1994
 hrtimer_interrupt+0x44b/0x950 kernel/time/hrtimer.c:2113
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
 __sysvec_apic_timer_interrupt+0x102/0x430 arch/x86/kernel/apic/apic.c:1067
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1061
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:get_current arch/x86/include/asm/current.h:25 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x70 kernel/kcov.c:216
Code: 8b 3d a4 a0 60 0c 48 89 de 5b e9 b3 ea 5f 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 0d 88 70 73 11 65 8b 15 a9 70 73 11 81 e2 00 01 ff 00 74
RSP: 0018:ffffc90003f6f618 EFLAGS: 00000282
RAX: ffffffff89791165 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffffc90003f6fcf0 RSI: 0000000000000000 RDI: ffff888074c4c640
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff89791e10
R10: dffffc0000000000 R11: fffffbfff20615bf R12: ffff888074c4c640
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
 __skb_datagram_iter+0x35/0x980 net/core/datagram.c:393
 skb_copy_datagram_iter+0xb5/0x240 net/core/datagram.c:535
 skb_copy_datagram_msg include/linux/skbuff.h:4243 [inline]
 __unix_dgram_recvmsg+0x666/0xd60 net/unix/af_unix.c:2629
 sock_recvmsg_nosec+0x10c/0x140 net/socket.c:1137
 ____sys_recvmsg+0x3e3/0x4a0 net/socket.c:2916
 ___sys_recvmsg+0x215/0x590 net/socket.c:2960
 do_recvmmsg+0x334/0x800 net/socket.c:3055
 __sys_recvmmsg net/socket.c:3129 [inline]
 __do_sys_recvmmsg net/socket.c:3152 [inline]
 __se_sys_recvmmsg net/socket.c:3145 [inline]
 __x64_sys_recvmmsg+0x198/0x250 net/socket.c:3145
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f67fc59cdd9
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:00007f67fd428028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f67fc816090 RCX: 00007f67fc59cdd9
RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000004
RBP: 00007f67fc632d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f67fc816128 R14: 00007f67fc816090 R15: 00007ffe6a6dafb8
 </TASK>