loop0: detected capacity change from 0 to 1024 hfsplus: new node 0 already hashed? ------------[ cut here ]------------ WARNING: CPU: 1 PID: 4963 at fs/hfsplus/bnode.c:641 hfsplus_bnode_create+0x404/0x4c8 fs/hfsplus/bnode.c:640 Modules linked in: CPU: 1 PID: 4963 Comm: syz.0.15 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : hfsplus_bnode_create+0x404/0x4c8 fs/hfsplus/bnode.c:640 lr : hfsplus_bnode_create+0x404/0x4c8 fs/hfsplus/bnode.c:640 sp : ffff80001f916d90 x29: ffff80001f916da0 x28: 0000000000000000 x27: 00000000000000f8 x26: 0000000000000080 x25: dfff800000000000 x24: 0000000000000000 x23: ffff0000cf462a88 x22: 0000000000000000 x21: ffff0000dd320000 x20: 0000000000000000 x19: ffff0000cf462a00 x18: 0000000000000001 x17: 0000000000000000 x16: ffff8000111ceed0 x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000000 x10: 0000000000000000 x9 : 47aa1f6a62568c00 x8 : 47aa1f6a62568c00 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001f916678 x4 : ffff80001426f5a0 x3 : ffff80000a728ccc x2 : ffff0001a10c3d50 x1 : 0000000100000000 x0 : 0000000000000023 Call trace: hfsplus_bnode_create+0x404/0x4c8 fs/hfsplus/bnode.c:640 hfsplus_bmap_alloc+0x5d0/0x8fc fs/hfsplus/btree.c:420 hfs_btree_inc_height+0xf8/0x8e0 fs/hfsplus/brec.c:475 hfsplus_brec_insert+0x108/0xaa8 fs/hfsplus/brec.c:75 __hfsplus_ext_write_extent+0x278/0x4dc fs/hfsplus/extents.c:107 __hfsplus_ext_cache_extent+0x84/0xa88 fs/hfsplus/extents.c:186 hfsplus_ext_read_extent fs/hfsplus/extents.c:218 [inline] hfsplus_file_extend+0x370/0x12f4 fs/hfsplus/extents.c:459 hfsplus_get_block+0x324/0x11c8 fs/hfsplus/extents.c:245 __block_write_begin_int+0x3e4/0x1588 fs/buffer.c:2012 __block_write_begin fs/buffer.c:2062 [inline] block_write_begin fs/buffer.c:2122 [inline] cont_write_begin+0x4e4/0x6dc fs/buffer.c:2471 hfsplus_write_begin+0xa8/0xf8 fs/hfsplus/inode.c:53 generic_perform_write+0x204/0x480 mm/filemap.c:3785 __generic_file_write_iter+0x23c/0x454 mm/filemap.c:3912 generic_file_write_iter+0xb0/0x1b4 mm/filemap.c:3944 call_write_iter include/linux/fs.h:2173 [inline] new_sync_write fs/read_write.c:507 [inline] vfs_write+0x7c8/0xa2c fs/read_write.c:594 ksys_write+0x120/0x210 fs/read_write.c:647 __do_sys_write fs/read_write.c:659 [inline] __se_sys_write fs/read_write.c:656 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:656 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 irq event stamp: 5172 hardirqs last enabled at (5171): [] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:257 hardirqs last disabled at (5172): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396 softirqs last enabled at (4060): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (4058): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace 7170caf32ddbf704 ]--- ------------[ cut here ]------------ kernel BUG at fs/hfsplus/bnode.c:688! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 4963 Comm: syz.0.15 Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : hfsplus_bnode_put+0x590/0x59c fs/hfsplus/bnode.c:688 lr : hfsplus_bnode_put+0x590/0x59c fs/hfsplus/bnode.c:688 sp : ffff80001f916e80 x29: ffff80001f916e80 x28: 0000000000000000 x27: dfff800000000000 x26: ffff700003f22de4 x25: ffff80001f916f20 x24: ffff0000dd320000 x23: dfff800000000000 x22: 1fffe00019e8c540 x21: 0000000000000000 x20: ffff0000cf462a80 x19: ffff0000cf462a00 x18: 0000000000000001 x17: 0000000000000000 x16: ffff8000111ceed0 x15: 00000000ffffffff x14: 0000000000000001 x13: 1ffff0000283206b x12: 0000000000ff0100 x11: 0000000000000000 x10: 0000000000000000 x9 : ffff800008eb27fc x8 : ffff0000ccfe0000 x7 : ffff800008885e98 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff800008eb22c8 x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: hfsplus_bnode_put+0x590/0x59c fs/hfsplus/bnode.c:688 hfs_btree_inc_height+0x48c/0x8e0 fs/hfsplus/brec.c:530 hfsplus_brec_insert+0x108/0xaa8 fs/hfsplus/brec.c:75 __hfsplus_ext_write_extent+0x278/0x4dc fs/hfsplus/extents.c:107 __hfsplus_ext_cache_extent+0x84/0xa88 fs/hfsplus/extents.c:186 hfsplus_ext_read_extent fs/hfsplus/extents.c:218 [inline] hfsplus_file_extend+0x370/0x12f4 fs/hfsplus/extents.c:459 hfsplus_get_block+0x324/0x11c8 fs/hfsplus/extents.c:245 __block_write_begin_int+0x3e4/0x1588 fs/buffer.c:2012 __block_write_begin fs/buffer.c:2062 [inline] block_write_begin fs/buffer.c:2122 [inline] cont_write_begin+0x4e4/0x6dc fs/buffer.c:2471 hfsplus_write_begin+0xa8/0xf8 fs/hfsplus/inode.c:53 generic_perform_write+0x204/0x480 mm/filemap.c:3785 __generic_file_write_iter+0x23c/0x454 mm/filemap.c:3912 generic_file_write_iter+0xb0/0x1b4 mm/filemap.c:3944 call_write_iter include/linux/fs.h:2173 [inline] new_sync_write fs/read_write.c:507 [inline] vfs_write+0x7c8/0xa2c fs/read_write.c:594 ksys_write+0x120/0x210 fs/read_write.c:647 __do_sys_write fs/read_write.c:659 [inline] __se_sys_write fs/read_write.c:656 [inline] __arm64_sys_write+0x7c/0x90 fs/read_write.c:656 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Code: aa1403e0 97e629f0 17ffff74 97d71b08 (d4210000) ---[ end trace 7170caf32ddbf705 ]---