RAX: ffffffffffffffda RBX: 00007fa92bfed180 RCX: 00007fa92bd73dd9
RDX: 000000000208e24b RSI: 0000200000000040 RDI: 0000000000000006
RBP: 00007fa929f8b090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fa92bfed218 R14: 00007fa92bfed180 R15: 00007fffc9164118
 </TASK>
hfs: new node 0 already hashed?
------------[ cut here ]------------
WARNING: CPU: 0 PID: 13296 at fs/hfs/bnode.c:530 hfs_bnode_create+0x3d1/0x450 fs/hfs/bnode.c:529
Modules linked in:
CPU: 0 PID: 13296 Comm: syz.9.1844 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:hfs_bnode_create+0x3d1/0x450 fs/hfs/bnode.c:530
Code: 9a 3f 8a 89 ee e8 1f b5 82 07 e9 57 fd ff ff e8 d5 b7 49 ff 4c 89 ef e8 0d cb 96 07 48 c7 c7 80 9a 3f 8a 89 ee e8 ff b4 82 07 <0f> 0b eb b7 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 63 fc ff ff 4c
RSP: 0018:ffffc9000360efd0 EFLAGS: 00010246
RAX: 000000000000001f RBX: ffff88805b518000 RCX: 52af63a6e2a22800
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffc9000360eae7 R09: 1ffff920006c1d5c
R10: dffffc0000000000 R11: fffff520006c1d5d R12: 0000000000000000
R13: ffff88805b5180e0 R14: ffff88805f7b0700 R15: dffffc0000000000
FS:  00007fa929f8b6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa92bdc14c0 CR3: 0000000052a0a000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 hfs_bmap_alloc+0x5b8/0x670 fs/hfs/btree.c:288
 hfs_btree_inc_height+0xfd/0xac0 fs/hfs/brec.c:490
 hfs_brec_insert+0x744/0xbd0 fs/hfs/brec.c:148
 __hfs_ext_write_extent+0x2a1/0x470 fs/hfs/extent.c:124
 __hfs_ext_cache_extent+0x6b/0x9b0 fs/hfs/extent.c:174
 hfs_ext_read_extent fs/hfs/extent.c:202 [inline]
 hfs_extend_file+0x39c/0x13f0 fs/hfs/extent.c:401
 hfs_get_block+0x40f/0xc50 fs/hfs/extent.c:353
 __block_write_begin_int+0x565/0x15d0 fs/buffer.c:2012
 __block_write_begin fs/buffer.c:2062 [inline]
 block_write_begin fs/buffer.c:2122 [inline]
 cont_write_begin+0x598/0x7b0 fs/buffer.c:2471
 hfs_write_begin+0x92/0xe0 fs/hfs/inode.c:59
 generic_perform_write+0x2b6/0x550 mm/filemap.c:3785
 __generic_file_write_iter+0x25f/0x4e0 mm/filemap.c:3912
 generic_file_write_iter+0xa6/0x1b0 mm/filemap.c:3944
 call_write_iter include/linux/fs.h:2173 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0x745/0xd60 fs/read_write.c:594
 ksys_write+0x152/0x260 fs/read_write.c:647
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fa92bd73dd9
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:00007fa929f8b028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fa92bfed180 RCX: 00007fa92bd73dd9
RDX: 000000000208e24b RSI: 0000200000000040 RDI: 0000000000000006
RBP: 00007fa929f8b090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fa92bfed218 R14: 00007fa92bfed180 R15: 00007fffc9164118
 </TASK>