hfs: new node 4 already hashed?
------------[ cut here ]------------
WARNING: CPU: 0 PID: 4503 at fs/hfs/bnode.c:520 hfs_bnode_create+0x40c/0x4c8 fs/hfs/bnode.c:519
Modules linked in:
CPU: 0 PID: 4503 Comm: syz.4.20 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 : hfs_bnode_create+0x40c/0x4c8 fs/hfs/bnode.c:519
lr : hfs_bnode_create+0x40c/0x4c8 fs/hfs/bnode.c:519
sp : ffff800020fc7180
x29: ffff800020fc71a0 x28: dfff800000000000 x27: dfff800000000000
x26: 00000000000000f8 x25: 0000000000000004 x24: ffff0000c34f4c88
x23: 1ffff000041f8e44 x22: 0000000000000004 x21: ffff0000d336a000
x20: 0000000000000004 x19: ffff0000dc017000 x18: 00000000d6ec36c7
x17: 0000000000000000 x16: ffff8000082d22e0 x15: 0000000000000002
x14: 00000000ffffffff x13: 0000000000000001 x12: 0000000000080000
x11: 0000000000005e7f x10: ffff80002b1f4000 x9 : 9795af7d42642700
x8 : 9795af7d42642700 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff800020fc6c58 x4 : ffff8000151a4820 x3 : ffff80000a84556c
x2 : ffff00019f6bcd10 x1 : 0000000100000000 x0 : 000000000000001f
Call trace:
 hfs_bnode_create+0x40c/0x4c8 fs/hfs/bnode.c:519
 hfs_bmap_alloc+0x4f4/0x59c fs/hfs/btree.c:291
 hfs_bnode_split+0xc8/0xbb8 fs/hfsplus/brec.c:245
 hfs_brec_insert+0x2e8/0x96c fs/hfs/brec.c:102
 hfs_cat_create+0x470/0x758 fs/hfs/catalog.c:131
 hfs_create+0x6c/0xe0 fs/hfs/dir.c:202
 lookup_open fs/namei.c:3482 [inline]
 open_last_lookups fs/namei.c:3550 [inline]
 path_openat+0x112c/0x2680 fs/namei.c:3780
 do_filp_open+0x174/0x344 fs/namei.c:3810
 do_sys_openat2+0x128/0x3d8 fs/open.c:1318
 do_sys_open fs/open.c:1334 [inline]
 __do_sys_openat fs/open.c:1350 [inline]
 __se_sys_openat fs/open.c:1345 [inline]
 __arm64_sys_openat+0x120/0x154 fs/open.c:1345
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x138 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: 96594
hardirqs last  enabled at (96593): [<ffff800008308424>] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:261
hardirqs last disabled at (96594): [<ffff80001195a4d8>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last  enabled at (96482): [<ffff80000803092c>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (96480): [<ffff8000080308f8>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19
---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
kernel BUG at fs/hfs/bnode.c:565!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 4503 Comm: syz.4.20 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 : hfs_bnode_put+0x358/0x364 fs/hfs/bnode.c:565
lr : hfs_bnode_put+0x358/0x364 fs/hfs/bnode.c:565
sp : ffff800020fc7400
x29: ffff800020fc7400 x28: dfff800000000000 x27: ffff0000dc017000
x26: ffff0000dc016c00 x25: ffff800020fc7648 x24: 1fffe0001b802e00
x23: ffff0000d336a000 x22: dfff800000000000 x21: 0000000000000000
x20: ffff0000dc017080 x19: ffff0000dc017000 x18: 00000000d6ec36c7
x17: 0000000000000000 x16: ffff8000082d0e30 x15: 0000000000000002
x14: 00000000000000ff x13: 0083000200736574 x12: 0000000000080000
x11: 00000000000209f3 x10: ffff80002b1f4000 x9 : ffff800008f84be8
x8 : 00000000000209f4 x7 : 7166622e6f696b6c x6 : 621a000000000025
x5 : ffff0000f20bf64d x4 : ffff0000e2d93634 x3 : ffff800008f848ec
x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 hfs_bnode_put+0x358/0x364 fs/hfs/bnode.c:565
 hfs_brec_insert+0x678/0x96c fs/hfs/brec.c:162
 hfs_cat_create+0x470/0x758 fs/hfs/catalog.c:131
 hfs_create+0x6c/0xe0 fs/hfs/dir.c:202
 lookup_open fs/namei.c:3482 [inline]
 open_last_lookups fs/namei.c:3550 [inline]
 path_openat+0x112c/0x2680 fs/namei.c:3780
 do_filp_open+0x174/0x344 fs/namei.c:3810
 do_sys_openat2+0x128/0x3d8 fs/open.c:1318
 do_sys_open fs/open.c:1334 [inline]
 __do_sys_openat fs/open.c:1350 [inline]
 __se_sys_openat fs/open.c:1345 [inline]
 __arm64_sys_openat+0x120/0x154 fs/open.c:1345
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x138 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
Code: aa1403e0 97e5492d 17ffffce 97d4732d (d4210000) 
---[ end trace 0000000000000000 ]---