loop0: detected capacity change from 0 to 1024
hfsplus: new node 0 already hashed?
------------[ cut here ]------------
WARNING: CPU: 0 PID: 4994 at fs/hfsplus/bnode.c:642 hfsplus_bnode_create+0x404/0x4c8 fs/hfsplus/bnode.c:641
Modules linked in:
CPU: 0 PID: 4994 Comm: syz.0.16 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : hfsplus_bnode_create+0x404/0x4c8 fs/hfsplus/bnode.c:641
lr : hfsplus_bnode_create+0x404/0x4c8 fs/hfsplus/bnode.c:641
sp : ffff80001fc77450
x29: ffff80001fc77460 x28: 0000000000000000 x27: dfff800000000000
x26: 0000000000000080 x25: dfff800000000000 x24: 0000000000000000
x23: ffff0000cff4ea88 x22: ffff0000cff4ea00 x21: ffff0000dc040000
x20: 0000000000000000 x19: 0000000000000000 x18: 0000000000000001
x17: 0000000000000000 x16: ffff80001125a830 x15: 00000000ffffffff
x14: 0000000000000001 x13: 1fffe000341f1cd7 x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000000000000000 x9 : 2a9a8672d20e0500
x8 : 2a9a8672d20e0500 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff80001fc76d58 x4 : ffff80001437f3e0 x3 : ffff80000a75e82c
x2 : ffff0001a0f82d50 x1 : 0000000100000000 x0 : 0000000000000023
Call trace:
 hfsplus_bnode_create+0x404/0x4c8 fs/hfsplus/bnode.c:641
 hfsplus_bmap_alloc+0x614/0x944 fs/hfsplus/btree.c:420
 hfs_btree_inc_height+0x108/0x900 fs/hfsplus/brec.c:475
 hfsplus_brec_insert+0x118/0xac0 fs/hfsplus/brec.c:75
 __hfsplus_ext_write_extent+0x274/0x4a8 fs/hfsplus/extents.c:107
 __hfsplus_ext_cache_extent+0x84/0xa84 fs/hfsplus/extents.c:186
 hfsplus_file_truncate+0x3a4/0x9bc fs/hfsplus/extents.c:597
 hfsplus_setattr+0x18c/0x258 fs/hfsplus/inode.c:287
 notify_change+0xa08/0xcd8 fs/attr.c:505
 do_truncate+0x188/0x20c 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+0x98/0x2b0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1d0 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: 5356
hardirqs last  enabled at (5355): [<ffff8000082fb428>] __up_console_sem+0xb4/0xfc kernel/printk/printk.c:257
hardirqs last disabled at (5356): [<ffff8000112561f8>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (4944): [<ffff80000819fb84>] softirq_handle_end kernel/softirq.c:419 [inline]
softirqs last  enabled at (4944): [<ffff80000819fb84>] handle_softirqs+0xa40/0xbe4 kernel/softirq.c:604
softirqs last disabled at (4935): [<ffff8000081a0188>] __do_softirq kernel/softirq.c:610 [inline]
softirqs last disabled at (4935): [<ffff8000081a0188>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (4935): [<ffff8000081a0188>] invoke_softirq kernel/softirq.c:457 [inline]
softirqs last disabled at (4935): [<ffff8000081a0188>] __irq_exit_rcu+0x240/0x43c kernel/softirq.c:659
---[ end trace ac02975aa614becb ]---