BUG: MAX_LOCKDEP_ENTRIES too low!

[syzbot]

Hello,

syzbot found the following crash on:

HEAD commit:    f4788d37 Add linux-next specific files for 20190614
git tree:       linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=17f2e3f1a00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=daee2e11d008b604
dashboard link: https://syzkaller.appspot.com/bug?extid=cd0ec5211ac07c18c049
compiler:       gcc (GCC) 9.0.0 20181231 (experimental)

Unfortunately, I don't have any reproducer for this crash yet.

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+cd0ec5211ac07c18c049@xxxxxxxxxxxxxxxxxxxxxxxxx

BUG: MAX_LOCKDEP_ENTRIES too low!
turning off the locking correctness validator.
CPU: 0 PID: 25825 Comm: syz-executor.4 Not tainted 5.2.0-rc4-next-20190614  
#15
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS  
Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 alloc_list_entry kernel/locking/lockdep.c:1219 [inline]
 add_lock_to_list.isra.0.cold+0x11/0x18 kernel/locking/lockdep.c:1240
 check_prev_add kernel/locking/lockdep.c:2449 [inline]
 check_prevs_add kernel/locking/lockdep.c:2502 [inline]
 validate_chain kernel/locking/lockdep.c:2892 [inline]
 __lock_acquire+0x2cb2/0x4af0 kernel/locking/lockdep.c:3885
 lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:4418
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:151
 vprintk_emit+0x115/0x700 kernel/printk/printk.c:1966
 vprintk_default+0x28/0x30 kernel/printk/printk.c:2013
 vprintk_func+0x7e/0x189 kernel/printk/printk_safe.c:386
 printk+0xba/0xed kernel/printk/printk.c:2046
 _udf_err+0xdc/0x110 fs/udf/super.c:2286
 udf_read_tagged+0x49c/0x530 fs/udf/misc.c:212
 udf_check_anchor_block+0x1ef/0x680 fs/udf/super.c:1785
 udf_scan_anchors+0x1cf/0x680 fs/udf/super.c:1825
 udf_find_anchor fs/udf/super.c:1882 [inline]
 udf_load_vrs+0x67f/0xc80 fs/udf/super.c:1947
 udf_fill_super+0x7d8/0x16d1 fs/udf/super.c:2140
 mount_bdev+0x304/0x3c0 fs/super.c:1346
 udf_mount+0x35/0x40 fs/udf/super.c:131
 legacy_get_tree+0x108/0x220 fs/fs_context.c:661
 vfs_get_tree+0x8e/0x390 fs/super.c:1476
 do_new_mount fs/namespace.c:2790 [inline]
 do_mount+0x138c/0x1c00 fs/namespace.c:3110
 ksys_mount+0xdb/0x150 fs/namespace.c:3319
 __do_sys_mount fs/namespace.c:3333 [inline]
 __se_sys_mount fs/namespace.c:3330 [inline]
 __x64_sys_mount+0xbe/0x150 fs/namespace.c:3330
 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4592c9
Code: fd b7 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 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fb3d01d1c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00000000004592c9
RDX: 0000000020000140 RSI: 0000000020000180 RDI: 00000000200000c0
RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb3d01d26d4
R13: 00000000004c570b R14: 00000000004d9aa0 R15: 00000000ffffffff


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