loop8: detected capacity change from 0 to 1024 hfsplus: new node 0 already hashed? ------------[ cut here ]------------ 1 WARNING: fs/hfsplus/bnode.c:631 at hfsplus_bnode_create+0x45d/0x4f0 fs/hfsplus/bnode.c:631, CPU#1: syz.8.2085/16622 Modules linked in: CPU: 1 UID: 0 PID: 16622 Comm: syz.8.2085 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 RIP: 0010:hfsplus_bnode_create+0x45d/0x4f0 fs/hfsplus/bnode.c:631 Code: e7 8b 89 ee e8 e4 5e 7b fe e9 cf fc ff ff e8 6a c2 19 ff 4c 89 f7 e8 72 88 05 09 48 c7 c7 e0 e2 e7 8b 89 ee e8 c4 5e 7b fe 90 <0f> 0b 90 49 c7 c5 ef ff ff ff eb a9 44 89 f9 80 e1 07 80 c1 03 38 RSP: 0018:ffffc90002ef70c0 EFLAGS: 00010246 RAX: 0000000000000023 RBX: dffffc0000000000 RCX: 06f50853a8d9a200 RDX: ffffc90015b68000 RSI: 0000000000004056 RDI: 0000000000004057 RBP: 0000000000000000 R08: ffffc90002ef6e47 R09: 1ffff920005dedc8 R10: dffffc0000000000 R11: fffff520005dedc9 R12: 0000000000000000 R13: ffff88807a6d4000 R14: ffff88807a6d40d8 R15: ffff888048257c00 FS: 00007f7e309be6c0(0000) GS:ffff88812535c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c2f0a37 CR3: 0000000034320000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 000000000000000e DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: hfsplus_bmap_alloc+0x747/0xb00 fs/hfsplus/btree.c:421 hfs_bnode_split+0xd4/0x1090 fs/hfsplus/brec.c:245 hfsplus_brec_insert+0x3bc/0xd70 fs/hfsplus/brec.c:100 hfsplus_create_cat+0x426/0x11b0 fs/hfsplus/catalog.c:292 hfsplus_mknod+0x16a/0x2b0 fs/hfsplus/dir.c:532 lookup_open fs/namei.c:4511 [inline] open_last_lookups fs/namei.c:4611 [inline] path_openat+0x1395/0x3860 fs/namei.c:4855 do_file_open+0x23e/0x4a0 fs/namei.c:4887 do_sys_openat2+0x113/0x200 fs/open.c:1364 do_sys_open fs/open.c:1370 [inline] __do_sys_creat fs/open.c:1448 [inline] __se_sys_creat fs/open.c:1442 [inline] __x64_sys_creat+0x8f/0xc0 fs/open.c:1442 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f7e2fb9c819 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:00007f7e309be028 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f7e2fe15fa0 RCX: 00007f7e2fb9c819 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000580 RBP: 00007f7e2fc32c91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f7e2fe16038 R14: 00007f7e2fe15fa0 R15: 00007ffcbaa44178