hfsplus: new node 0 already hashed?
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WARNING: CPU: 0 PID: 8856 at fs/hfsplus/bnode.c:631 hfsplus_bnode_create+0x418/0x4cc fs/hfsplus/bnode.c:630
Modules linked in:
CPU: 0 PID: 8856 Comm: syz.3.1111 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : hfsplus_bnode_create+0x418/0x4cc fs/hfsplus/bnode.c:630
lr : hfsplus_bnode_create+0x418/0x4cc fs/hfsplus/bnode.c:630
sp : ffff8000211f6dc0
x29: ffff8000211f6de0 x28: dfff800000000000 x27: ffff70000423edcc
x26: 0000000000000000 x25: 00000000000000f8 x24: dfff800000000000
x23: 0000000000000080 x22: ffff0000c49af200 x21: 0000000000000000
x20: ffff0000f379c000 x19: 0000000000000000 x18: 1fffe00033e7ff7e
x17: ffff80001532d000 x16: ffff800011b3e320 x15: 0000000040000000
x14: 0000000000000001 x13: 1ffff0000423ed20 x12: 0000000000080000
x11: 000000000000b56f x10: ffff80002b093000 x9 : d2b28d6017f66d00
x8 : d2b28d6017f66d00 x7 : ffff80000825ab3c x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000001 x3 : ffff80000a8d09fc
x2 : ffff00019f3ffd10 x1 : 0000000100000000 x0 : 0000000000000023
Call trace:
 hfsplus_bnode_create+0x418/0x4cc fs/hfsplus/bnode.c:630
 hfsplus_bmap_alloc+0x5b8/0x90c fs/hfsplus/btree.c:421
 hfs_btree_inc_height+0x108/0x8e4 fs/hfsplus/brec.c:475
 hfsplus_brec_insert+0x11c/0xaa4 fs/hfsplus/brec.c:75
 hfsplus_create_attr+0x3ac/0x4d8 fs/hfsplus/attributes.c:252
 __hfsplus_setxattr+0x9e8/0x1b14 fs/hfsplus/xattr.c:358
 hfsplus_setxattr+0xdc/0x12c fs/hfsplus/xattr.c:438
 hfsplus_security_setxattr+0x54/0x6c fs/hfsplus/xattr_security.c:31
 __vfs_setxattr+0x374/0x390 fs/xattr.c:182
 __vfs_setxattr_noperm+0x120/0x56c fs/xattr.c:216
 __vfs_setxattr_locked+0x1e8/0x214 fs/xattr.c:277
 vfs_setxattr+0x158/0x2a8 fs/xattr.c:309
 do_setxattr fs/xattr.c:594 [inline]
 setxattr+0x258/0x2d8 fs/xattr.c:617
 path_setxattr+0x130/0x260 fs/xattr.c:636
 __do_sys_lsetxattr fs/xattr.c:659 [inline]
 __se_sys_lsetxattr fs/xattr.c:655 [inline]
 __arm64_sys_lsetxattr+0xc4/0xe0 fs/xattr.c:655
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
irq event stamp: 97950
hardirqs last  enabled at (97949): [<ffff80000825abd0>] raw_spin_rq_unlock_irq kernel/sched/sched.h:1374 [inline]
hardirqs last  enabled at (97949): [<ffff80000825abd0>] finish_lock_switch+0xb0/0x1c8 kernel/sched/core.c:5004
hardirqs last disabled at (97950): [<ffff800011b3a55c>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last  enabled at (97880): [<ffff800008031254>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (97878): [<ffff800008031220>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19
---[ end trace 0000000000000000 ]---