Hi, I've got the following error report while fuzzing the kernel with syzkaller.
On commit b29794ec95c6856b316c2295904208bf11ffddd9 (4.12-rc4+). INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. CPU: 2 PID: 17404 Comm: syz-executor1 Not tainted 4.12.0-rc4+ #15 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:16 [inline] dump_stack+0x292/0x395 lib/dump_stack.c:52 register_lock_class+0x717/0x1aa0 kernel/locking/lockdep.c:755 __lock_acquire+0x269/0x3690 kernel/locking/lockdep.c:3255 ? 0xffffffffa0000000 lock_acquire+0x22d/0x560 kernel/locking/lockdep.c:3855 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:151 spin_lock include/linux/spinlock.h:299 [inline] can_rx_register+0x4f3/0x700 net/can/af_can.c:483 raw_enable_filters+0xd7/0x1e0 net/can/raw.c:192 raw_enable_allfilters+0x8a/0x1e0 net/can/raw.c:258 raw_bind+0x244/0x830 net/can/raw.c:435 SYSC_bind+0x20e/0x4c0 net/socket.c:1422 SyS_bind+0x29/0x30 net/socket.c:1408 entry_SYSCALL_64_fastpath+0x1f/0xbe RIP: 0033:0x446389 RSP: 002b:00007fa1efda2c08 EFLAGS: 00000292 ORIG_RAX: 0000000000000031 RAX: ffffffffffffffda RBX: 0000000000000220 RCX: 0000000000446389 RDX: 0000000000000060 RSI: 0000000020001fa0 RDI: 0000000000000017 RBP: 00000000ffffffff R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000017 R13: 0000000000003770 R14: 00000000006e4830 R15: 0000000000c13000
