loop0: detected capacity change from 0 to 1024 hfsplus: new node 0 already hashed? ------------[ cut here ]------------ WARNING: CPU: 0 PID: 4989 at fs/hfsplus/bnode.c:682 hfsplus_bnode_create+0x404/0x4c8 fs/hfsplus/bnode.c:681 Modules linked in: CPU: 0 PID: 4989 Comm: syz.0.16 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : hfsplus_bnode_create+0x404/0x4c8 fs/hfsplus/bnode.c:681 lr : hfsplus_bnode_create+0x404/0x4c8 fs/hfsplus/bnode.c:681 sp : ffff80001ff87450 x29: ffff80001ff87460 x28: 0000000000000000 x27: 00000000000000f8 x26: 0000000000000080 x25: dfff800000000000 x24: dfff800000000000 x23: ffff0000e191d0f8 x22: 0000000000000000 x21: ffff0000d81fa000 x20: 0000000000000000 x19: ffff0000dd037200 x18: 0000000000000001 x17: 0000000000000000 x16: ffff8000111cbe1c x15: 00000000ffffffff x14: 0000000000ff0100 x13: 0000000000000001 x12: 0000000000ff0100 x11: 0000000000000000 x10: 0000000000000000 x9 : d7cac2ae9f7f1e00 x8 : d7cac2ae9f7f1e00 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001ff86d38 x4 : ffff80001425f420 x3 : ffff80000a7280cc x2 : ffff0001a10b3d50 x1 : 0000000100000000 x0 : 0000000000000023 Call trace: hfsplus_bnode_create+0x404/0x4c8 fs/hfsplus/bnode.c:681 hfsplus_bmap_alloc+0x534/0x5f8 fs/hfsplus/btree.c:414 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_file_truncate+0x374/0x984 fs/hfsplus/extents.c:597 hfsplus_setattr+0x18c/0x258 fs/hfsplus/inode.c:267 notify_change+0xa08/0xcd8 fs/attr.c:505 do_truncate+0x178/0x1f0 fs/open.c:65 do_sys_ftruncate+0x284/0x31c fs/open.c:193 __do_sys_ftruncate fs/open.c:204 [inline] __se_sys_ftruncate fs/open.c:202 [inline] __arm64_sys_ftruncate+0x60/0x74 fs/open.c:202 __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: 4800 hardirqs last enabled at (4799): [] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:257 hardirqs last disabled at (4800): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396 softirqs last enabled at (4770): [] softirq_handle_end kernel/softirq.c:419 [inline] softirqs last enabled at (4770): [] handle_softirqs+0xa4c/0xbf0 kernel/softirq.c:604 softirqs last disabled at (4757): [] __do_softirq kernel/softirq.c:610 [inline] softirqs last disabled at (4757): [] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline] softirqs last disabled at (4757): [] invoke_softirq kernel/softirq.c:457 [inline] softirqs last disabled at (4757): [] __irq_exit_rcu+0x240/0x440 kernel/softirq.c:659 ---[ end trace eead1d1c26cd6480 ]--- ------------[ cut here ]------------ kernel BUG at fs/hfsplus/bnode.c:729! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 4989 Comm: syz.0.16 Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : hfsplus_bnode_put+0x590/0x59c fs/hfsplus/bnode.c:729 lr : hfsplus_bnode_put+0x590/0x59c fs/hfsplus/bnode.c:729 sp : ffff80001ff87540 x29: ffff80001ff87540 x28: 0000000000000000 x27: dfff800000000000 x26: ffff700003ff0ebc x25: ffff80001ff875e0 x24: ffff0000d81fa000 x23: dfff800000000000 x22: 1fffe0001ba06e40 x21: 0000000000000000 x20: ffff0000dd037280 x19: ffff0000dd037200 x18: 0000000000000001 x17: 0000000000000000 x16: ffff8000111cbe1c x15: 00000000ffffffff x14: 0000000000000001 x13: 1ffff0000283006b x12: 0000000000ff0100 x11: 0000000000000000 x10: 0000000000000000 x9 : ffff800008eb1df0 x8 : ffff0000d16db680 x7 : ffff800008885da4 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff800008eb18bc x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: hfsplus_bnode_put+0x590/0x59c fs/hfsplus/bnode.c:729 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_file_truncate+0x374/0x984 fs/hfsplus/extents.c:597 hfsplus_setattr+0x18c/0x258 fs/hfsplus/inode.c:267 notify_change+0xa08/0xcd8 fs/attr.c:505 do_truncate+0x178/0x1f0 fs/open.c:65 do_sys_ftruncate+0x284/0x31c fs/open.c:193 __do_sys_ftruncate fs/open.c:204 [inline] __se_sys_ftruncate fs/open.c:202 [inline] __arm64_sys_ftruncate+0x60/0x74 fs/open.c:202 __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 97e62c46 17ffff74 97d71d8c (d4210000) ---[ end trace eead1d1c26cd6481 ]---