------------[ cut here ]------------ lockdep bfs error:-1 WARNING: CPU: 0 PID: 19990 at kernel/locking/lockdep.c:1960 print_bfs_bug+0x130/0x1e0 kernel/locking/lockdep.c:1960 Modules linked in: CPU: 0 PID: 19990 Comm: syz-executor.2 Not tainted 5.9.0-rc7-next-20200929-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:print_bfs_bug+0x130/0x1e0 kernel/locking/lockdep.c:1960 Code: e2 08 00 74 2c 48 c7 c7 c0 af a6 8d e8 49 51 01 00 66 90 85 db 75 05 5b 5d 41 5c c3 89 ee 48 c7 c7 20 e8 ab 88 e8 cb 15 c1 06 <0f> 0b 5b 5d 41 5c c3 0f 0b e8 b2 ba e9 06 85 c0 74 d7 48 c7 c0 78 RSP: 0018:ffffc900091bf060 EFLAGS: 00010082 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff815df155 RDI: fffff52001237dfe RBP: 00000000ffffffff R08: 0000000000000001 R09: ffff8880ae420f8b R10: 0000000000000000 R11: 207065646b636f6c R12: ffff88809e9ee300 R13: dffffc0000000000 R14: 0000000000000002 R15: 0000000000000000 FS: 00007f1fab5f5700(0000) GS:ffff8880ae400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000016a5374 CR3: 0000000045ee7000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: check_irq_usage+0x6b4/0xc60 kernel/locking/lockdep.c:2585 check_prev_add kernel/locking/lockdep.c:2823 [inline] check_prevs_add kernel/locking/lockdep.c:2944 [inline] validate_chain kernel/locking/lockdep.c:3562 [inline] __lock_acquire+0x2873/0x56d0 kernel/locking/lockdep.c:4796 lock_acquire+0x1f2/0xaa0 kernel/locking/lockdep.c:5398 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:151 alloc_object lib/debugobjects.c:239 [inline] __debug_object_init+0x5c6/0xd10 lib/debugobjects.c:548 __init_work+0x48/0x50 kernel/workqueue.c:503 call_usermodehelper_setup+0xb5/0x2f0 kernel/umh.c:358 call_modprobe kernel/kmod.c:93 [inline] __request_module+0x411/0xa40 kernel/kmod.c:170 crypto_larval_lookup crypto/api.c:230 [inline] crypto_alg_mod_lookup+0x24e/0x4d0 crypto/api.c:277 crypto_has_alg+0x21/0x70 crypto/api.c:581 crypto_has_comp include/linux/crypto.h:936 [inline] xfrm_probe_algs net/xfrm/xfrm_algo.c:795 [inline] xfrm_probe_algs+0x250/0x400 net/xfrm/xfrm_algo.c:776 pfkey_register+0xe9/0x950 net/key/af_key.c:1704 pfkey_process+0x68b/0x800 net/key/af_key.c:2841 pfkey_sendmsg+0x42d/0x800 net/key/af_key.c:3680 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:671 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2362 ___sys_sendmsg+0xf3/0x170 net/socket.c:2416 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2449 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45dd99 Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f1fab5f4c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000002d240 RCX: 000000000045dd99 RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000005 RBP: 000000000118bf60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c R13: 00007ffccee00abf R14: 00007f1fab5f59c0 R15: 000000000118bf2c