kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 10808 Comm: syz-executor5 Not tainted 4.17.0-rc4+ #46
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:hfs_find_init+0x76/0x180 fs/hfs/bfind.c:21
RSP: 0018:ffff88017d606bb0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff88017d606c38 RCX: ffffc9000650b000
RDX: 0000000000000008 RSI: ffffffff8226a2d6 RDI: ffff88017d606c50
RBP: ffff88017d606bd0 R08: ffff88017adfa280 R09: ffffed0039d23649
R10: ffff88017d606cc0 R11: ffff8801ce91b24f R12: 0000000000000000
R13: 0000000000000040 R14: ffff88017d606c98 R15: 0000000000000000
FS:  00007f8b931ce700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004dbf58 CR3: 000000017fe7d000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 hfs_ext_read_extent+0x1b9/0xc20 fs/hfs/extent.c:196
 hfs_get_block+0x578/0x850 fs/hfs/extent.c:360
 block_read_full_page+0x2c7/0xab0 fs/buffer.c:2236
 hfs_readpage+0x1c/0x20 fs/hfs/inode.c:38
 do_read_cache_page+0x778/0x13b0 mm/filemap.c:2805
 read_cache_page+0x61/0x80 mm/filemap.c:2893
 read_mapping_page include/linux/pagemap.h:402 [inline]
 hfs_btree_open+0x56b/0x1550 fs/hfs/btree.c:78
 hfs_mdb_get+0x17fe/0x22e1 fs/hfs/mdb.c:193
 hfs_fill_super+0x112c/0x18c0 fs/hfs/super.c:413
 mount_bdev+0x30c/0x3e0 fs/super.c:1164
 hfs_mount+0x34/0x40 fs/hfs/super.c:463
 mount_fs+0xae/0x328 fs/super.c:1267
 vfs_kern_mount.part.34+0xd4/0x4d0 fs/namespace.c:1037
 vfs_kern_mount fs/namespace.c:1027 [inline]
 do_new_mount fs/namespace.c:2518 [inline]
 do_mount+0x564/0x3070 fs/namespace.c:2848
 ksys_mount+0x12d/0x140 fs/namespace.c:3064
 __do_sys_mount fs/namespace.c:3078 [inline]
 __se_sys_mount fs/namespace.c:3075 [inline]
 __x64_sys_mount+0xbe/0x150 fs/namespace.c:3075
 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4583aa
RSP: 002b:00007f8b931cdba8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000000 RCX: 00000000004583aa
RDX: 0000000020000000 RSI: 00000000200000c0 RDI: 00007f8b931cdbf0
RBP: 0000000000000001 R08: 0000000020000140 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000013
R13: 0000000000000001 R14: 00000000006fec78 R15: 0000000000000000
Code: c1 ea 03 80 3c 02 00 0f 85 f2 00 00 00 4d 8d 6c 24 40 48 c7 43 18 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e b0 00 00 00 41 8b 44 24 40 
RIP: hfs_find_init+0x76/0x180 fs/hfs/bfind.c:21 RSP: ffff88017d606bb0
---[ end trace d82f1f0af6519410 ]---