hfs: new node 0 already hashed? ------------[ cut here ]------------ WARNING: CPU: 1 PID: 6355 at fs/hfs/bnode.c:422 hfs_bnode_create+0x14c/0x530 fs/hfs/bnode.c:422 Modules linked in: CPU: 1 PID: 6355 Comm: syz-executor.4 Not tainted 6.8.0-rc7-syzkaller-00020-g5847c9777c30 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 RIP: 0010:hfs_bnode_create+0x14c/0x530 fs/hfs/bnode.c:422 Code: be 23 ff 45 39 fc 75 9e e8 e1 c3 23 ff 4c 89 f7 e8 b9 f8 5f 08 e8 d4 c3 23 ff 44 89 e6 48 c7 c7 40 a2 28 8b e8 a5 ae 05 ff 90 <0f> 0b 90 e8 bc c3 23 ff 48 89 d8 48 83 c4 18 5b 5d 41 5c 41 5d 41 RSP: 0018:ffffc900045bf340 EFLAGS: 00010282 RAX: 000000000000001f RBX: ffff88802de02800 RCX: ffffc90009a2c000 RDX: 0000000000000000 RSI: ffffffff816efe36 RDI: 0000000000000005 RBP: ffff888079e18000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 0000000000000001 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff888079e180e0 R15: 0000000000000000 FS: 00007f373ef796c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8af0ad56c6 CR3: 000000001e8ce000 CR4: 0000000000350ef0 Call Trace: hfs_bmap_alloc+0x75c/0x880 fs/hfs/btree.c:291 hfs_btree_inc_height.isra.0+0x100/0x830 fs/hfs/brec.c:471 hfs_brec_insert+0x81f/0xb90 fs/hfs/brec.c:148 __hfs_ext_write_extent+0x3fa/0x520 fs/hfs/extent.c:124 __hfs_ext_cache_extent fs/hfs/extent.c:174 [inline] hfs_ext_read_extent+0x809/0x9e0 fs/hfs/extent.c:202 hfs_extend_file+0x4e4/0xb10 fs/hfs/extent.c:401 hfs_get_block+0x17f/0x830 fs/hfs/extent.c:353 __block_write_begin_int+0x4fe/0x16e0 fs/buffer.c:2103 __block_write_begin fs/buffer.c:2152 [inline] block_write_begin+0xb1/0x4a0 fs/buffer.c:2211 cont_write_begin+0x53e/0x750 fs/buffer.c:2565 hfs_write_begin+0x87/0x150 fs/hfs/inode.c:53 generic_perform_write+0x276/0x620 mm/filemap.c:3930 __generic_file_write_iter+0x1fd/0x240 mm/filemap.c:4025 generic_file_write_iter+0xe7/0x350 mm/filemap.c:4051 call_write_iter include/linux/fs.h:2087 [inline] new_sync_write fs/read_write.c:497 [inline] vfs_write+0x6e1/0x1110 fs/read_write.c:590 ksys_write+0x12f/0x260 fs/read_write.c:643 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd8/0x270 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7f373e27dda9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 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 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f373ef790c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f373e3abf80 RCX: 00007f373e27dda9 RDX: 00000000000ffe00 RSI: 0000000020004200 RDI: 0000000000000004 RBP: 00007f373ef79120 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 000000000000000b R14: 00007f373e3abf80 R15: 00007ffd08e14298