rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 3141 jiffies s: 5057 root: 0x1/. rcu: blocking rcu_node structures (internal RCU debug): Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 7584 Comm: syz.4.844 Not tainted 6.10.0-rc6-syzkaller-01218-g390b14b5e9f6 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 RIP: 0010:lookup_chain_cache kernel/locking/lockdep.c:3763 [inline] RIP: 0010:lookup_chain_cache_add kernel/locking/lockdep.c:3782 [inline] RIP: 0010:validate_chain+0x1e6/0x5900 kernel/locking/lockdep.c:3837 Code: 89 df e8 cd d0 88 00 48 89 5c 24 48 48 8b 1b 48 85 db 74 48 48 83 c3 f8 74 42 4c 8d 7b 18 4c 89 f8 48 c1 e8 03 42 80 3c 20 00 <74> 08 4c 89 ff e8 a0 d0 88 00 49 8b 07 4c 39 f0 0f 84 7e 03 00 00 RSP: 0018:ffffc900000062a0 EFLAGS: 00000046 RAX: 1ffffffff26147df RBX: ffffffff930a3ee0 RCX: ffffffff81731abe RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff92fba580 RBP: ffffc900000065a0 R08: ffffffff92fba587 R09: 1ffffffff25f74b0 R10: dffffc0000000000 R11: fffffbfff25f74b1 R12: dffffc0000000000 R13: ffff88802a51a9f0 R14: 2f566e4e45871fd7 R15: ffffffff930a3ef8 FS: 00007f6f09dff6c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020007038 CR3: 000000002a260000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __lock_acquire+0x1346/0x1fd0 kernel/locking/lockdep.c:5137 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162 debug_object_deactivate+0x158/0x390 lib/debugobjects.c:763 debug_hrtimer_deactivate kernel/time/hrtimer.c:428 [inline] debug_deactivate+0x1b/0x220 kernel/time/hrtimer.c:484 __run_hrtimer kernel/time/hrtimer.c:1657 [inline] __hrtimer_run_queues+0x305/0xd50 kernel/time/hrtimer.c:1753 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1815 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline] __sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__read_once_word_nocheck+0x1/0x20 include/asm-generic/rwonce.h:66 Code: df e8 33 c5 ba 00 e9 72 fc ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 53 <48> 89 fb e8 d7 ff 54 00 48 8b 03 5b c3 cc cc cc cc 66 2e 0f 1f 84 RSP: 0018:ffffc90000006d38 EFLAGS: 00000246 RAX: ffffffff81411e15 RBX: ffffc90000006e80 RCX: ffff88802a519e00 RDX: 0000000080000303 RSI: 0000000000000002 RDI: ffffc90000007750 RBP: ffffc90000007750 R08: ffffffff81411deb R09: ffffffff8141095f R10: 0000000000000003 R11: ffff88802a519e00 R12: 1ffff92000000dd1 R13: 1ffff92000000dd2 R14: 1ffff92000000dd0 R15: ffffc90000008000 deref_stack_reg+0x1c7/0x260 arch/x86/kernel/unwind_orc.c:406 unwind_next_frame+0x1ab8/0x2a00 arch/x86/kernel/unwind_orc.c:648 arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:370 [inline] __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:387 kasan_kmalloc include/linux/kasan.h:211 [inline] kmalloc_trace_noprof+0x19c/0x2c0 mm/slub.c:4154 kmalloc_noprof include/linux/slab.h:660 [inline] ip_setup_cork+0x53f/0x8b0 net/ipv4/ip_output.c:1305 ip_append_data+0xff/0x190 net/ipv4/ip_output.c:1358 icmp_push_reply+0x97/0x410 net/ipv4/icmp.c:373 __icmp_send+0xf89/0x14e0 net/ipv4/icmp.c:777 icmp_send include/net/icmp.h:43 [inline] ip_protocol_deliver_rcu+0x418/0x440 net/ipv4/ip_input.c:216 ip_local_deliver_finish+0x341/0x5f0 net/ipv4/ip_input.c:233 NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314 NF_HOOK+0x3a4/0x450 include/linux/netfilter.h:314 __netif_receive_skb_one_core net/core/dev.c:5655 [inline] __netif_receive_skb+0x2bf/0x650 net/core/dev.c:5769 process_backlog+0x662/0x15b0 net/core/dev.c:6102 __napi_poll+0xcb/0x490 net/core/dev.c:6766 napi_poll net/core/dev.c:6835 [inline] net_rx_action+0x89b/0x1240 net/core/dev.c:6957 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554 do_softirq+0x11b/0x1e0 kernel/softirq.c:455 __local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:382 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:851 [inline] __dev_queue_xmit+0x1763/0x3e90 net/core/dev.c:4450 dev_queue_xmit include/linux/netdevice.h:3101 [inline] neigh_hh_output include/net/neighbour.h:526 [inline] neigh_output include/net/neighbour.h:540 [inline] ip_finish_output2+0xd41/0x1390 net/ipv4/ip_output.c:235 ip_local_out net/ipv4/ip_output.c:129 [inline] ip_send_skb net/ipv4/ip_output.c:1495 [inline] ip_push_pending_frames+0xbf/0x150 net/ipv4/ip_output.c:1515 raw_sendmsg+0x1ac5/0x2490 net/ipv4/raw.c:657 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x1a6/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2585 ___sys_sendmsg net/socket.c:2639 [inline] __sys_sendmmsg+0x3b2/0x740 net/socket.c:2725 __do_sys_sendmmsg net/socket.c:2754 [inline] __se_sys_sendmmsg net/socket.c:2751 [inline] __x64_sys_sendmmsg+0xa0/0xb0 net/socket.c:2751 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6f0a375bd9 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:00007f6f09dff048 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007f6f0a503f60 RCX: 00007f6f0a375bd9 RDX: 0000000004000095 RSI: 0000000020005240 RDI: 0000000000000003 RBP: 00007f6f0a3e4aa1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f6f0a503f60 R15: 00007ffc5993ae68