loop4: detected capacity change from 0 to 1024 ------------[ cut here ]------------ kernel BUG at fs/hfsplus/bnode.c:624! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 7363 Comm: syz.4.275 Not tainted 6.15.0-next-20250530-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:hfsplus_bnode_put+0x54a/0x560 fs/hfsplus/bnode.c:624 Code: 8b ff e9 b2 fe ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c f0 fe ff ff 48 89 df e8 b1 cd 8b ff e9 e3 fe ff ff e8 a7 4a 28 ff 90 <0f> 0b e8 9f 4a 28 ff 90 0f 0b 66 66 66 2e 0f 1f 84 00 00 00 00 00 RSP: 0018:ffffc900038df3a8 EFLAGS: 00010287 RAX: ffffffff82981509 RBX: ffff8880774dca00 RCX: 0000000000080000 RDX: ffffc9000cdad000 RSI: 0000000000004e05 RDI: 0000000000004e06 RBP: 0000000000000000 R08: ffff8880774dca83 R09: 1ffff1100ee9b950 R10: dffffc0000000000 R11: ffffed100ee9b951 R12: ffff8880774dca80 R13: 1ffff9200071be88 R14: dffffc0000000000 R15: ffff888079784000 FS: 00007fe486b186c0(0000) GS:ffff888125c53000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe483bd4f98 CR3: 000000004ee76000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hfsplus_bmap_alloc+0x5a5/0x640 fs/hfsplus/btree.c:414 hfs_bnode_split+0xcc/0xef0 fs/hfsplus/brec.c:245 hfsplus_brec_insert+0x38f/0xcc0 fs/hfsplus/brec.c:100 hfsplus_create_cat+0x9e9/0x1000 fs/hfsplus/catalog.c:308 hfsplus_link+0x3eb/0x6a0 fs/hfsplus/dir.c:342 vfs_link+0x4ed/0x6e0 fs/namei.c:4854 do_linkat+0x272/0x560 fs/namei.c:4924 __do_sys_link fs/namei.c:4958 [inline] __se_sys_link fs/namei.c:4956 [inline] __x64_sys_link+0x82/0x90 fs/namei.c:4956 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe485d8e969 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:00007fe486b18038 EFLAGS: 00000246 ORIG_RAX: 0000000000000056 RAX: ffffffffffffffda RBX: 00007fe485fb5fa0 RCX: 00007fe485d8e969 RDX: 0000000000000000 RSI: 0000200000000240 RDI: 00002000000001c0 RBP: 00007fe485e10ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fe485fb5fa0 R15: 00007ffea4a83228 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:hfsplus_bnode_put+0x54a/0x560 fs/hfsplus/bnode.c:624 Code: 8b ff e9 b2 fe ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c f0 fe ff ff 48 89 df e8 b1 cd 8b ff e9 e3 fe ff ff e8 a7 4a 28 ff 90 <0f> 0b e8 9f 4a 28 ff 90 0f 0b 66 66 66 2e 0f 1f 84 00 00 00 00 00 RSP: 0018:ffffc900038df3a8 EFLAGS: 00010287 RAX: ffffffff82981509 RBX: ffff8880774dca00 RCX: 0000000000080000 RDX: ffffc9000cdad000 RSI: 0000000000004e05 RDI: 0000000000004e06 RBP: 0000000000000000 R08: ffff8880774dca83 R09: 1ffff1100ee9b950 R10: dffffc0000000000 R11: ffffed100ee9b951 R12: ffff8880774dca80 R13: 1ffff9200071be88 R14: dffffc0000000000 R15: ffff888079784000 FS: 00007fe486b186c0(0000) GS:ffff888125c53000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c34f0ee CR3: 000000004ee76000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400