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
CPU: 0 PID: 6727 Comm: syz-executor0 Not tainted 4.18.0-rc8-next-20180807+ #33
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:kstrtoull lib/kstrtox.c:123 [inline]
RIP: 0010:kstrtouint+0x83/0x1b0 lib/kstrtox.c:222
Code: f1 f1 c7 40 04 00 f2 f2 f2 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 e8 1a 31 18 fe 48 89 d8 48 89 da 48 c1 e8 03 83 e2 07 <42> 0f b6 04 30 38 d0 7f 08 84 c0 0f 85 e8 00 00 00 44 0f b6 33 bf
RSP: 0018:ffff880190837888 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffc90001e0c000
RDX: 0000000000000000 RSI: ffffffff8364fc96 RDI: 0000000000000000
RBP: ffff880190837918 R08: ffff8801908282c0 R09: ffff880190898e00
R10: 00000000900ed4cc R11: ffff8801db0236b3 R12: 1ffff10032106f12
R13: ffff880190837a18 R14: dffffc0000000000 R15: ffff8801908378f0
FS:  00007fe1be0af700(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d122000 CR3: 00000001cff56000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 fs_parse+0xb8d/0x1130 fs/fs_parser.c:164
 hugetlbfs_parse_param+0xd1/0xa50 fs/hugetlbfs/inode.c:1210
 vfs_parse_fs_param+0x196/0x2c0 fs/fs_context.c:162
 vfs_parse_fs_string+0x1d5/0x2b0 fs/fs_context.c:191
 generic_parse_monolithic+0x17c/0x210 fs/fs_context.c:228
 parse_monolithic_mount_data fs/namespace.c:2320 [inline]
 do_new_mount fs/namespace.c:2599 [inline]
 do_mount+0x6d8/0x1e30 fs/namespace.c:2927
 ksys_mount+0x12d/0x140 fs/namespace.c:3143
 __do_sys_mount fs/namespace.c:3157 [inline]
 __se_sys_mount fs/namespace.c:3154 [inline]
 __x64_sys_mount+0xbe/0x150 fs/namespace.c:3154
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x456cb9
Code: fd 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 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fe1be0aec78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fe1be0af6d4 RCX: 0000000000456cb9
RDX: 0000000020000300 RSI: 0000000020000340 RDI: 0000000020000000
RBP: 00000000009300a0 R08: 00000000200001c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004d1e78 R14: 00000000004c75c6 R15: 0000000000000000
Modules linked in:
Dumping ftrace buffer:
   (ftrace buffer empty)
---[ end trace 5fc9ebe545346f4e ]---
RIP: 0010:kstrtoull lib/kstrtox.c:123 [inline]
RIP: 0010:kstrtouint+0x83/0x1b0 lib/kstrtox.c:222
Code: f1 f1 c7 40 04 00 f2 f2 f2 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 e8 1a 31 18 fe 48 89 d8 48 89 da 48 c1 e8 03 83 e2 07 <42> 0f b6 04 30 38 d0 7f 08 84 c0 0f 85 e8 00 00 00 44 0f b6 33 bf
RSP: 0018:ffff880190837888 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffc90001e0c000
RDX: 0000000000000000 RSI: ffffffff8364fc96 RDI: 0000000000000000
RBP: ffff880190837918 R08: ffff8801908282c0 R09: ffff880190898e00
R10: 00000000900ed4cc R11: ffff8801db0236b3 R12: 1ffff10032106f12
R13: ffff880190837a18 R14: dffffc0000000000 R15: ffff8801908378f0
FS:  00007fe1be0af700(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d122000 CR3: 00000001cff56000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400