rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 1, t=10502 jiffies, g=231785, q=641 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4295134530-4295124028), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 10502 jiffies! g231785 f0x2 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:27544 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5388 [inline]
 __schedule+0x1821/0x5740 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+0x389/0x470 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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 7333 Comm: syz.7.11434 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:hrtimer_get_softexpires include/linux/hrtimer.h:116 [inline]
RIP: 0010:__hrtimer_run_queues+0x1a1/0xa20 kernel/time/hrtimer.c:1991
Code: 4a 8d 0c 30 48 89 4c 24 38 4a 8d 1c 30 48 83 c3 50 4c 01 f0 48 83 c0 10 48 89 04 24 4c 8b 74 24 08 48 89 5c 24 40 48 8d 5d 40 <48> 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 89 79 7e 00
RSP: 0018:ffffc90000007dd8 EFLAGS: 00000006
RAX: ffffffff81b28efc RBX: ffff8880620b6340 RCX: ffff888060f55c40
RDX: 0000000000010000 RSI: ffff8880b8628418 RDI: ffff8880620b6300
RBP: ffff8880620b6300 R08: ffff8880620b6317 R09: ffff8880620b6308
R10: dffffc0000000000 R11: ffffed100c416c63 R12: ffff8880b8628280
R13: 1ffff110170c5082 R14: ffff8880b8628420 R15: dffffc0000000000
FS:  00007fe20c2d16c0(0000) GS:ffff888125287000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1071bc58d2 CR3: 0000000096335000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 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:__asan_memset+0x24/0x50 mm/kasan/shadow.c:84
Code: 90 90 90 90 90 90 f3 0f 1e fa 55 41 56 53 48 89 d3 89 f5 49 89 fe 48 8b 4c 24 18 48 89 d6 ba 01 00 00 00 e8 1e e5 ff ff 84 c0 <74> 11 4c 89 f7 89 ee 48 89 da 5b 41 5e 5d e9 09 63 78 09 31 c0 5b
RSP: 0018:ffffc900059af8a0 EFLAGS: 00000202
RAX: ffffffff8972de01 RBX: 0000000000000080 RCX: ffffffff8972de24
RDX: 0000000000000001 RSI: 0000000000000080 RDI: ffffc900059af940
RBP: 0000000000000000 R08: ffffc900059af9bf R09: 1ffff92000b35f37
R10: dffffc0000000000 R11: fffff52000b35f38 R12: 1ffff92000b35f24
R13: ffffc900059afce0 R14: ffffc900059af940 R15: dffffc0000000000
 ____sys_recvmsg+0xd4/0x4a0 net/socket.c:2900
 ___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: 0033:0x7fe20b39ce59
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:00007fe20c2d1028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007fe20b616090 RCX: 00007fe20b39ce59
RDX: 00000000080002c1 RSI: 0000200000000040 RDI: 0000000000000003
RBP: 00007fe20b432d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe20b616128 R14: 00007fe20b616090 R15: 00007ffeccda37d8
 </TASK>