rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-....: (1 GPs behind) idle=3cd/1/0x4000000000000002 softirq=46531/46532 fqs=5245
(detected by 1, t=10502 jiffies, g=57537, q=2344)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 17445 Comm: syz.4.3410 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/25/2026
RIP: 0010:arch_atomic64_read arch/x86/include/asm/atomic64_64.h:22 [inline]
RIP: 0010:arch_atomic_long_read include/linux/atomic/atomic-long.h:29 [inline]
RIP: 0010:atomic_long_read include/linux/atomic/atomic-instrumented.h:1184 [inline]
RIP: 0010:perf_swevent_set_period kernel/events/core.c:9564 [inline]
RIP: 0010:perf_swevent_overflow kernel/events/core.c:9585 [inline]
RIP: 0010:perf_swevent_event+0x3c5/0x540 kernel/events/core.c:9629
Code: df e8 ef af 25 00 48 8b 03 48 8b 4c 24 08 48 89 01 4c 89 e8 48 c1 e8 03 48 89 44 24 08 4c 89 ef be 08 00 00 00 e8 5b b1 25 00 <48> b8 00 00 00 00 00 fc ff df 48 8b 4c 24 08 80 3c 01 00 74 08 4c
RSP: 0018:ffffc900000073a8 EFLAGS: 00000056
RAX: 1ffff1100bada901 RBX: ffff88805d6d4f80 RCX: ffffffff81986155
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88805d6d4f90
RBP: 0000000000000007 R08: ffff88805d6d4f97 R09: 1ffff1100bada9f2
R10: dffffc0000000000 R11: ffffed100bada9f3 R12: 0000000000000001
R13: ffff88805d6d4f90 R14: 1ffff1100bada9f1 R15: 0000000000000007
FS: 00007f1c873646c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1c87342ff8 CR3: 000000002391b000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000200000000300
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
perf_tp_event+0x324/0xbe0 kernel/events/core.c:10047
perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10021
perf_trace_preemptirq_template+0x2aa/0x360 include/trace/events/preemptirq.h:14
trace_irq_enable_rcuidle+0x108/0x180 include/trace/events/preemptirq.h:40
trace_hardirqs_on+0x57/0x80 kernel/trace/trace_preemptirq.c:44
asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:rcu_read_unlock_special+0x7f/0x4a0 kernel/rcu/tree_plugin.h:674
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 c2 22 9d 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc900000078a0 EFLAGS: 00000206
RAX: e32170c32d41d300 RBX: 1ffff92000000f18 RCX: e32170c32d41d300
RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: ffffffff8a7a2a40
RBP: ffffc90000007968 R08: ffff8880b903b30b R09: 1ffff11017207661
R10: dffffc0000000000 R11: ffffed1017207662 R12: ffffffff8c323400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
__rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
rcu_read_unlock include/linux/rcupdate.h:772 [inline]
pfn_valid include/linux/mmzone.h:-1 [inline]
__virt_addr_valid+0x3b8/0x470 arch/x86/mm/physaddr.c:65
sg_set_buf include/linux/scatterlist.h:143 [inline]
sg_init_one+0x56/0x160 lib/scatterlist.c:141
add_recvbuf_mergeable drivers/net/virtio_net.c:1378 [inline]
try_fill_recv+0x891/0x1720 drivers/net/virtio_net.c:1402
virtnet_receive drivers/net/virtio_net.c:1516 [inline]
virtnet_poll+0x68e/0xe90 drivers/net/virtio_net.c:1617
__napi_poll+0xbb/0x430 net/core/dev.c:7101
napi_poll net/core/dev.c:7168 [inline]
net_rx_action+0x522/0xa80 net/core/dev.c:7258
handle_softirqs+0x336/0x830 kernel/softirq.c:576
__do_softirq kernel/softirq.c:610 [inline]
invoke_softirq kernel/softirq.c:450 [inline]
__irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:preempt_schedule_irq+0xb6/0x160 kernel/sched/core.c:6799
Code: 00 00 43 c6 44 37 04 f8 74 0b 0f 0b 48 f7 03 08 00 00 00 74 7f bf 01 00 00 00 e8 75 e5 8a f7 e8 20 b7 b7 f7 fb bf 01 00 00 00 d5 b5 ff ff 43 c6 44 37 08 00 48 c7 44 24 40 00 00 00 00 9c 8f
RSP: 0018:ffffc90002fafda0 EFLAGS: 00000286
RAX: e32170c32d41d300 RBX: 0000000000000000 RCX: e32170c32d41d300
RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: 0000000000000001
RBP: ffffc90002fafe40 R08: ffff8880b903b30b R09: 1ffff11017207661
R10: dffffc0000000000 R11: ffffed1017207662 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920005f5fb4
irqentry_exit+0x63/0x70 kernel/entry/common.c:432
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:__syscall_enter_from_user_work kernel/entry/common.c:93 [inline]
RIP: 0010:syscall_enter_from_user_mode+0x2a/0x70 kernel/entry/common.c:114
Code: 41 56 53 48 89 f3 49 89 fe 48 8b 7c 24 10 e8 3d f6 ff ff eb 31 eb 35 e8 24 f9 bf f7 e8 1f f7 bf f7 fb 65 48 8b 05 06 4e 43 76 <48> 8b 70 08 40 f6 c6 3f 74 0b 4c 89 f7 5b 41 5e e9 f1 fb a7 f7 48
RSP: 0018:ffffc90002faff08 EFLAGS: 00000286
RAX: ffff888056261dc0 RBX: 00000000000000ca RCX: e32170c32d41d300
RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: ffffffff8a7a2a40
RBP: ffffc90002faff48 R08: ffff8880b903b30b R09: 1ffff11017207661
R10: dffffc0000000000 R11: ffffed1017207662 R12: 0000000000000000
R13: 0000000000000000 R14: ffffc90002faff58 R15: 0000000000000000
do_syscall_64+0x24/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f1c8910be59
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:00007f1c873640e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f1c89393fa8 RCX: 00007f1c8910be59
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f1c89393fa8
RBP: 00007f1c89393fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1c89394038 R14: 00007ffffc487040 R15: 00007ffffc487128