------------[ cut here ]------------ lockdep bfs error:-1 WARNING: CPU: 1 PID: 18785 at kernel/locking/lockdep.c:2071 print_bfs_bug+0x24/0x30 kernel/locking/lockdep.c:2071 Modules linked in: CPU: 1 PID: 18785 Comm: syz-executor.3 Not tainted 6.8.0-rc7-syzkaller-00142-g3aaa8ce7a335 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 RIP: 0010:print_bfs_bug+0x24/0x30 kernel/locking/lockdep.c:2071 Code: 90 90 90 90 90 90 55 89 fd 53 e8 17 7c 06 03 89 c3 e8 40 fd ff ff 85 db 74 14 90 48 c7 c7 c0 b8 0c 8b 89 ee e8 0d a0 e5 ff 90 <0f> 0b 90 90 5b 5d c3 cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc900042e68d8 EFLAGS: 00010086 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffc9000a1cb000 RDX: 0000000000040000 RSI: ffffffff814f7586 RDI: 0000000000000001 RBP: 00000000ffffffff R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888082c46450 R13: ffff888082c46478 R14: ffffc900042e69f0 R15: dffffc0000000000 FS: 00007fe3a01716c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5f8757a538 CR3: 000000001c6ba000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: check_irq_usage+0xe4a/0x1490 kernel/locking/lockdep.c:2824 check_prev_add kernel/locking/lockdep.c:3138 [inline] check_prevs_add kernel/locking/lockdep.c:3253 [inline] validate_chain kernel/locking/lockdep.c:3869 [inline] __lock_acquire+0x2465/0x3b40 kernel/locking/lockdep.c:5137 lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719 do_write_seqcount_begin_nested include/linux/seqlock.h:469 [inline] do_write_seqcount_begin include/linux/seqlock.h:495 [inline] psi_group_change+0x10c/0xdc0 kernel/sched/psi.c:787 psi_task_switch+0x55e/0x900 kernel/sched/psi.c:938 psi_sched_switch kernel/sched/stats.h:185 [inline] __schedule+0x22b9/0x5c60 kernel/sched/core.c:6722 preempt_schedule_irq+0x52/0x90 kernel/sched/core.c:7047 irqentry_exit+0x36/0x90 kernel/entry/common.c:348 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:lock_acquire+0x1ef/0x520 kernel/locking/lockdep.c:5722 Code: c1 05 3d c5 97 7e 83 f8 01 0f 85 b8 02 00 00 9c 58 f6 c4 02 0f 85 a3 02 00 00 48 85 ed 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24 RSP: 0018:ffffc900042e70e0 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: 1ffff9200085ce1e RCX: 0000000000000001 RDX: 0000000000000001 RSI: ffffffff8b0cb6c0 RDI: ffffffff8b6e9980 RBP: 0000000000000200 R08: 0000000000253b28 R09: fffffbfff27dcd44 R10: ffffffff93ee6a27 R11: 1ffffffff26b8e26 R12: 0000000000000001 R13: 0000000000000000 R14: ffff88801e219138 R15: 0000000000000000 __flush_workqueue+0x14b/0x1340 kernel/workqueue.c:3146 drain_workqueue+0x18f/0x3d0 kernel/workqueue.c:3311 destroy_workqueue+0xc3/0xb10 kernel/workqueue.c:4793 wg_newlink+0x6f5/0x900 drivers/net/wireguard/device.c:397 rtnl_newlink_create net/core/rtnetlink.c:3518 [inline] __rtnl_newlink+0x1197/0x1960 net/core/rtnetlink.c:3738 rtnl_newlink+0x67/0xa0 net/core/rtnetlink.c:3751 rtnetlink_rcv_msg+0x3c7/0xe10 net/core/rtnetlink.c:6617 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2543 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline] netlink_unicast+0x542/0x820 net/netlink/af_netlink.c:1367 netlink_sendmsg+0x8bb/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0xab5/0xc90 net/socket.c:2584 ___sys_sendmsg+0x135/0x1e0 net/socket.c:2638 __sys_sendmsg+0x117/0x1f0 net/socket.c:2667 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd5/0x270 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7fe39f47dda9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fe3a01710c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fe39f5abf80 RCX: 00007fe39f47dda9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 00007fe39f4ca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fe39f5abf80 R15: 00007ffcd67cee68 ---------------- Code disassembly (best guess): 0: c1 05 3d c5 97 7e 83 roll $0x83,0x7e97c53d(%rip) # 0x7e97c544 7: f8 clc 8: 01 0f add %ecx,(%rdi) a: 85 b8 02 00 00 9c test %edi,-0x63fffffe(%rax) 10: 58 pop %rax 11: f6 c4 02 test $0x2,%ah 14: 0f 85 a3 02 00 00 jne 0x2bd 1a: 48 85 ed test %rbp,%rbp 1d: 74 01 je 0x20 1f: fb sti 20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 27: fc ff df * 2a: 48 01 c3 add %rax,%rbx <-- trapping instruction 2d: 48 c7 03 00 00 00 00 movq $0x0,(%rbx) 34: 48 c7 43 08 00 00 00 movq $0x0,0x8(%rbx) 3b: 00 3c: 48 rex.W 3d: 8b .byte 0x8b 3e: 84 .byte 0x84 3f: 24 .byte 0x24