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1
WARNING: fs/hfs/bnode.c:520 at hfs_bnode_create+0x461/0x4f0, CPU#1: syz.6.754/12345
Modules linked in:
CPU: 1 UID: 0 PID: 12345 Comm: syz.6.754 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:hfs_bnode_create+0x461/0x4f0
Code: e8 8b 89 ee e8 00 b9 77 fe e9 cf fc ff ff e8 86 cd 15 ff 4c 89 ef e8 1e 7b fb 08 48 c7 c7 a0 2e e8 8b 89 ee e8 e0 b8 77 fe 90 <0f> 0b 90 eb b0 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c d6 fb ff ff
RSP: 0018:ffffc900038bf740 EFLAGS: 00010246
RAX: 000000000000001f RBX: ffff88816b7d8000 RCX: 192f46c65861b600
RDX: ffffc90008fb9000 RSI: 0000000000000d0a RDI: 0000000000000d0b
RBP: 0000000000000000 R08: ffffc900038bf4c7 R09: 1ffff92000717e98
R10: dffffc0000000000 R11: fffff52000717e99 R12: 0000000000000000
R13: ffff88816b7d80d8 R14: ffff8881a8b53600 R15: dffffc0000000000
FS:  00007f5da7e4b6c0(0000) GS:ffff8882a928c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb34d400000 CR3: 0000000113d00000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 hfs_bmap_alloc+0x5c1/0x650
 hfs_bnode_split+0xd4/0x1090
 hfs_brec_insert+0x3a1/0xc90
 hfs_cat_create+0x518/0x800
 hfs_mkdir+0x79/0xe0
 vfs_mkdir+0x413/0x630
 filename_mkdirat+0x285/0x510
 __se_sys_mkdirat+0x35/0x150
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5da6f9bc47
Code: 00 66 90 48 89 f2 b9 00 01 00 00 48 89 fe bf 9c ff ff ff e9 db f7 ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 b8 02 01 00 00 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:00007f5da7e4ae58 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f5da7e4aee0 RCX: 00007f5da6f9bc47
RDX: 00000000000001ff RSI: 00002000000005c0 RDI: 00000000ffffff9c
RBP: 0000200000000000 R08: 0000200000000140 R09: 0000000000000000
R10: 0000200000000000 R11: 0000000000000246 R12: 00002000000005c0
R13: 00007f5da7e4aea0 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
