syzbot

rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { P12071 0-.... } 2661 jiffies s: 36421 root: 0x1/T
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 12070 Comm: syz.3.2725 Not tainted 6.1.129-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:sched_clock_cpu+0x1/0x2b0 kernel/sched/clock.c:364
Code: 0d 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 c7 c7 20 69 1f 8d 48 89 de e8 3e 75 07 03 e9 43 ff ff ff 66 0f 1f 84 00 00 00 00 00 55 <48> 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 81 ec a0 00 00
RSP: 0018:ffffc900000075d0 EFLAGS: 00000086
RAX: 0000000000000000 RBX: ffffffff8cdf4970 RCX: ffffffff973bd103
RDX: 0000000000000000 RSI: ffffffff8b5f6d60 RDI: 0000000000000000
RBP: ffff8880471cd940 R08: dffffc0000000000 R09: fffffbfff1d413e6
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880b8e276e0
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000010000
FS:  00007f7bae5fb6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000040000000cf3d CR3: 0000000052f47000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 irqtime_account_irq+0x70/0x1e0 kernel/sched/cputime.c:60
 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
 sysvec_irq_work+0x45/0xc0 arch/x86/kernel/irq_work.c:17
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:728
RIP: 0010:rcu_read_unlock_special+0x84/0x540 kernel/rcu/tree_plugin.h:682
Code: f1 f1 f1 00 f2 f2 f2 49 89 04 17 66 41 c7 44 17 09 f3 f3 41 c6 44 17 0b f3 65 44 8b 25 6d 1a 8e 7e 41 f7 c4 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 3a 00 00 00 00 66 42 c7 44 3a
RSP: 0018:ffffc900000076e0 EFLAGS: 00000206
RAX: 3a8b68a3a83a7700 RBX: 1ffff92000000ee4 RCX: ffffffff973bd103
RDX: dffffc0000000000 RSI: ffffffff8b0c1d40 RDI: ffffffff8b5f6d80
RBP: ffffc900000077b8 R08: ffffffff81b609ac R09: ffffed10171c6ad6
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff8d333500
R13: ffff8880471cdd98 R14: ffffc90000007720 R15: 1ffff92000000ee0
 __rcu_read_unlock+0x92/0x100 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 netif_receive_skb_list_internal+0xb1a/0xe20 net/core/dev.c:5773
 gro_normal_list include/net/gro.h:433 [inline]
 napi_complete_done+0x352/0x820 net/core/dev.c:6113
 virtqueue_napi_complete drivers/net/virtio_net.c:403 [inline]
 virtnet_poll+0xc4a/0x1450 drivers/net/virtio_net.c:1687
 __napi_poll+0xc7/0x470 net/core/dev.c:6547
 napi_poll net/core/dev.c:6614 [inline]
 net_rx_action+0x70f/0xeb0 net/core/dev.c:6728
 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:578
 __do_softirq kernel/softirq.c:612 [inline]
 invoke_softirq kernel/softirq.c:452 [inline]
 __irq_exit_rcu+0x157/0x240 kernel/softirq.c:661
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:673
 common_interrupt+0xb3/0xd0 arch/x86/kernel/irq.c:240
 </IRQ>
 <TASK>
 asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:682
RIP: 0010:finish_task_switch+0x1d3/0x810 kernel/sched/core.c:5122
Code: 41 0b 00 48 83 c4 08 4c 89 f7 e8 68 31 00 00 0f 1f 44 00 00 4c 89 f7 e8 5b f9 5b 09 e8 f6 f5 31 00 fb 49 8d bc 24 f8 15 00 00 <48> 89 f8 48 c1 e8 03 49 bd 00 00 00 00 00 fc ff df 42 0f b6 04 28
RSP: 0018:ffffc90004897988 EFLAGS: 00000282
RAX: 3a8b68a3a83a7700 RBX: ffff8880246e0034 RCX: ffffffff973bd103
RDX: dffffc0000000000 RSI: ffffffff8b0c1d40 RDI: ffff8880471cef38
RBP: ffffc900048979d0 R08: ffffffff81b609ac R09: ffffed10171c6ad6
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880471cd940
R13: 1ffff110171c76e3 R14: ffff8880b8e3a9c0 R15: ffff8880b8e3b718
 context_switch kernel/sched/core.c:5246 [inline]
 __schedule+0x1447/0x4570 kernel/sched/core.c:6560
 preempt_schedule_irq+0xf7/0x1c0 kernel/sched/core.c:6872
 irqentry_exit+0x53/0x80 kernel/entry/common.c:439
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:phys_addr_valid arch/x86/mm/physaddr.h:7 [inline]
RIP: 0010:__phys_addr+0xa8/0x170 arch/x86/mm/physaddr.c:28
Code: 44 89 fe e8 ba bd 4c 00 41 83 ff 3f 0f 87 a0 00 00 00 e8 4b bb 4c 00 4c 89 f3 44 89 f9 48 d3 eb 31 ff 48 89 de e8 18 bf 4c 00 <48> 85 db 0f 85 a2 00 00 00 e8 2a bb 4c 00 4c 89 f0 5b 41 5e 41 5f
RSP: 0018:ffffc90004897d10 EFLAGS: 00000297
RAX: 0000000000000002 RBX: 0000000000000000 RCX: ffff8880471cd940
RDX: ffffc9000ff6e000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff813ddb98 R09: 0000000000100007
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888140e55000
R13: 0000000000000cc0 R14: 000000004720e280 R15: 000000000000002e
 virt_to_folio include/linux/mm.h:902 [inline]
 virt_to_slab+0x5/0xa0 mm/slab.h:175
 ___cache_free+0x16/0x90 mm/slub.c:3668
 qlink_free mm/kasan/quarantine.c:168 [inline]
 qlist_free_all+0x76/0xe0 mm/kasan/quarantine.c:187
 kasan_quarantine_reduce+0x156/0x170 mm/kasan/quarantine.c:294
 __kasan_slab_alloc+0x1f/0x70 mm/kasan/common.c:305
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook+0x52/0x3a0 mm/slab.h:737
 slab_alloc_node mm/slub.c:3398 [inline]
 slab_alloc mm/slub.c:3406 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3413 [inline]
 kmem_cache_alloc+0x10c/0x2d0 mm/slub.c:3422
 getname_flags+0xb8/0x4f0 fs/namei.c:139
 getname fs/namei.c:218 [inline]
 __do_sys_mkdir fs/namei.c:4151 [inline]
 __se_sys_mkdir fs/namei.c:4149 [inline]
 __x64_sys_mkdir+0x5b/0x80 fs/namei.c:4149
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f7bad78d169
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7bae5fb038 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007f7bad9a5fa0 RCX: 00007f7bad78d169
RDX: 0000000000000000 RSI: 0000000000000199 RDI: 0000400000000100
RBP: 00007f7bad80e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f7bad9a5fa0 R15: 00007ffcc6691ea8
 </TASK>