Oops: general protection fault, probably for non-canonical address 0xdffffc0000000008: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047]
CPU: 0 UID: 0 PID: 5969 Comm: syz.2.21 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:hfsplus_rename_cat+0x438/0x1000
Code: 0f b7 84 24 60 01 00 00 66 89 44 24 50 4c 8b b4 24 00 01 00 00 48 8b 44 24 38 4c 8d 60 40 4c 89 e0 48 c1 e8 03 48 89 44 24 70 <42> 80 3c 38 00 74 08 4c 89 e7 e8 39 3a 87 ff 4c 89 64 24 78 45 8b
RSP: 0018:ffffc90005ce7760 EFLAGS: 00010202
RAX: 0000000000000008 RBX: fffff52000b9cefc RCX: 0000000000080000
RDX: ffffc9000a014000 RSI: 0000000000005444 RDI: 0000000000005445
RBP: ffffc90005ce7bb0 R08: 0000000002000200 R09: 976da8e519000000
R10: 976da8e519000000 R11: 976da8e5976da8e5 R12: 0000000000000040
R13: ffffc90005ce7800 R14: ffff888175046000 R15: dffffc0000000000
FS:  00007f2460bf66c0(0000) GS:ffff88818e326000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c37ff29 CR3: 0000000112848000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 hfsplus_link+0x380/0x6e0
 vfs_link+0x518/0x6e0
 do_linkat+0x266/0x5b0
 __x64_sys_link+0x82/0x90
 do_syscall_64+0xe2/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f246299acb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2460bf6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000056
RAX: ffffffffffffffda RBX: 00007f2462c15fa0 RCX: 00007f246299acb9
RDX: 0000000000000000 RSI: 0000200000000bc0 RDI: 0000200000001240
RBP: 00007f2462a08bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2462c16038 R14: 00007f2462c15fa0 R15: 00007ffd6183f128
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:hfsplus_rename_cat+0x438/0x1000
Code: 0f b7 84 24 60 01 00 00 66 89 44 24 50 4c 8b b4 24 00 01 00 00 48 8b 44 24 38 4c 8d 60 40 4c 89 e0 48 c1 e8 03 48 89 44 24 70 <42> 80 3c 38 00 74 08 4c 89 e7 e8 39 3a 87 ff 4c 89 64 24 78 45 8b
RSP: 0018:ffffc90005ce7760 EFLAGS: 00010202
RAX: 0000000000000008 RBX: fffff52000b9cefc RCX: 0000000000080000
RDX: ffffc9000a014000 RSI: 0000000000005444 RDI: 0000000000005445
RBP: ffffc90005ce7bb0 R08: 0000000002000200 R09: 976da8e519000000
R10: 976da8e519000000 R11: 976da8e5976da8e5 R12: 0000000000000040
R13: ffffc90005ce7800 R14: ffff888175046000 R15: dffffc0000000000
FS:  00007f2460bf66c0(0000) GS:ffff88818e326000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c37ff29 CR3: 0000000112848000 CR4: 00000000000006f0
