syz.0.0 (5322) used greatest stack depth: 11464 bytes l[ 75.035719][ T5307] Bluetooth: hci0: command tx timeout loop0: detected capacity change from 0 to 1024 hfsplus: found bad thread record in catalog Buffer I/O error on dev loop0, logical block 43, async page read Buffer I/O error on dev loop0, logical block 44, async page read Buffer I/O error on dev loop0, logical block 45, async page read Buffer I/O error on dev loop0, logical block 46, async page read hfsplus: xattr searching failed hfsplus: xattr searching failed Buffer I/O error on dev loop0, logical block 7, async page read Buffer I/O error on dev loop0, logical block 8, async page read Buffer I/O error on dev loop0, logical block 9, async page read Buffer I/O error on dev loop0, logical block 10, async page read hfsplus: xattr searching failed hfsplus: xattr searching failed hfsplus: new node 0 already hashed? ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5322 at fs/hfsplus/bnode.c:573 hfsplus_bnode_create+0x3b9/0x450 fs/hfsplus/bnode.c:573 Modules linked in: CPU: 0 UID: 0 PID: 5322 Comm: syz.0.0 Not tainted 6.15.0-rc1-syzkaller-00065-g3b07108ada81 #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:hfsplus_bnode_create+0x3b9/0x450 fs/hfsplus/bnode.c:573 Code: 44 89 e6 e8 39 3a 7b fe e9 78 fd ff ff e8 ff 92 17 ff 4c 89 ff e8 a7 7e 87 09 48 c7 c7 40 71 61 8c 44 89 e6 e8 18 3a 7b fe 90 <0f> 0b 90 eb af 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 80 fc ff ff 48 RSP: 0018:ffffc9000d586dd8 EFLAGS: 00010246 RAX: 0000000000000023 RBX: ffff88803431ad00 RCX: 2cd41f7e0652fc00 RDX: ffffc9000e0aa000 RSI: 0000000000002a3e RDI: 0000000000002a3f RBP: 0000000000000000 R08: ffffffff81a2b49c R09: 1ffff92001ab0d58 R10: dffffc0000000000 R11: fffff52001ab0d59 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff88801249c000 R15: ffff88801249c0e0 FS: 00007f8303b096c0(0000) GS:ffff88808c596000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8303b07ff0 CR3: 000000003329e000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hfsplus_bmap_alloc+0x5e0/0x680 fs/hfsplus/btree.c:415 hfs_btree_inc_height+0x11f/0xdc0 fs/hfsplus/brec.c:475 hfsplus_brec_insert+0x168/0xde0 fs/hfsplus/brec.c:75 __hfsplus_ext_write_extent+0x36b/0x5c0 fs/hfsplus/extents.c:107 __hfsplus_ext_cache_extent+0x84/0xe10 fs/hfsplus/extents.c:186 hfsplus_ext_read_extent fs/hfsplus/extents.c:218 [inline] hfsplus_file_extend+0x48e/0x1b70 fs/hfsplus/extents.c:462 hfsplus_get_block+0x408/0x14f0 fs/hfsplus/extents.c:245 __block_write_begin_int+0x691/0x1930 fs/buffer.c:2116 block_write_begin fs/buffer.c:2227 [inline] cont_write_begin+0x781/0xb40 fs/buffer.c:2566 hfsplus_write_begin+0x68/0xb0 fs/hfsplus/inode.c:46 generic_perform_write+0x329/0xa10 mm/filemap.c:4102 generic_file_write_iter+0x10e/0x5e0 mm/filemap.c:4245 new_sync_write fs/read_write.c:591 [inline] vfs_write+0x70f/0xd10 fs/read_write.c:684 ksys_write+0x19d/0x2d0 fs/read_write.c:736 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8302d8d169 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f8303b09038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f8302fa5fa0 RCX: 00007f8302d8d169 RDX: 0000000000032600 RSI: 0000200000000400 RDI: 0000000000000007 RBP: 00007f8302e0e730 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f8302fa5fa0 R15: 00007ffea0a66578