hfs: new node 0 already hashed?
------------[ cut here ]------------
WARNING: CPU: 0 PID: 1659 at fs/hfs/bnode.c:422 hfs_bnode_create+0x428/0x4dc fs/hfs/bnode.c:421
Modules linked in:
CPU: 0 PID: 1659 Comm: kworker/u4:5 Not tainted 6.1.131-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: writeback wb_workfn (flush-7:0)
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : hfs_bnode_create+0x428/0x4dc fs/hfs/bnode.c:421
lr : hfs_bnode_create+0x428/0x4dc fs/hfs/bnode.c:421
sp : ffff800025e16c30
x29: ffff800025e16c40 x28: dfff800000000000 x27: dfff800000000000
x26: 000000000000016c x25: ffff0000c3982688 x24: 0000000000000000
x23: 0000000000000000 x22: ffff0000ccd800e0 x21: ffff0000ccd80000
x20: 0000000000000000 x19: ffff0000c3982600 x18: ffff800025e16200
x17: 0000000000000000 x16: ffff800012327ebc x15: 0000000000000000
x14: 00000000ffffffff x13: 0000000000000001 x12: 0000000000000001
x11: 0000000000ff0100 x10: 0000000000000000 x9 : 4a5ab436b6527a00
x8 : 4a5ab436b6527a00 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff800025e16538 x4 : ffff800015be5320 x3 : ffff80000ab34098
x2 : ffff0001b3cc2cd0 x1 : 0000000100000000 x0 : 000000000000001f
Call trace:
 hfs_bnode_create+0x428/0x4dc fs/hfs/bnode.c:421
 hfs_bmap_alloc+0x59c/0x664 fs/hfs/btree.c:291
 hfs_btree_inc_height+0xf8/0x9d0 fs/hfs/brec.c:471
 hfs_brec_insert+0x580/0x97c fs/hfs/brec.c:148
 __hfs_ext_write_extent+0x240/0x468 fs/hfs/extent.c:124
 hfs_ext_write_extent+0x148/0x1c0 fs/hfs/extent.c:144
 hfs_write_inode+0xc0/0x9a0 fs/hfs/inode.c:434
 write_inode fs/fs-writeback.c:1460 [inline]
 __writeback_single_inode+0x614/0x1770 fs/fs-writeback.c:1677
 writeback_sb_inodes+0x978/0x1718 fs/fs-writeback.c:1903
 wb_writeback+0x414/0x1130 fs/fs-writeback.c:2077
 wb_do_writeback fs/fs-writeback.c:2220 [inline]
 wb_workfn+0x3a8/0x1034 fs/fs-writeback.c:2260
 process_one_work+0x804/0x1484 kernel/workqueue.c:2292
 worker_thread+0x8e4/0xfec kernel/workqueue.c:2439
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:864
irq event stamp: 2741008
hardirqs last  enabled at (2741007): [<ffff8000083404bc>] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:261
hardirqs last disabled at (2741008): [<ffff800012323b9c>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last  enabled at (2740820): [<ffff800012095ea8>] spin_unlock_bh include/linux/spinlock.h:396 [inline]
softirqs last  enabled at (2740820): [<ffff800012095ea8>] batadv_nc_purge_paths+0x2f4/0x378 net/batman-adv/network-coding.c:471
softirqs last disabled at (2740818): [<ffff800012095c84>] spin_lock_bh include/linux/spinlock.h:356 [inline]
softirqs last disabled at (2740818): [<ffff800012095c84>] batadv_nc_purge_paths+0xd0/0x378 net/batman-adv/network-coding.c:442
---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
kernel BUG at fs/hfs/bnode.c:467!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 1659 Comm: kworker/u4:5 Tainted: G        W          6.1.131-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: writeback wb_workfn (flush-7:0)
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : hfs_bnode_put+0x318/0x324 fs/hfs/bnode.c:467
lr : hfs_bnode_put+0x318/0x324 fs/hfs/bnode.c:467
sp : ffff800025e16d50
x29: ffff800025e16d50 x28: dfff800000000000 x27: ffff700004bc2dc0
x26: 1fffe000199b0003 x25: 0000000000000200 x24: 1fffe000187304c0
x23: dfff800000000000 x22: ffff0000ccd80000 x21: ffff0000c3982680
x20: 0000000000000000 x19: ffff0000c3982600 x18: ffff800025e16200
x17: 0000000000000000 x16: ffff80000825bfc4 x15: 0000000000000000
x14: 1ffff00002b600b2 x13: dfff800000000000 x12: 0000000000000001
x11: 0000000000ff0100 x10: 0000000000000000 x9 : ffff8000090a3418
x8 : ffff0000cfbc3780 x7 : ffff80001227a3d4 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000090a3158
x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 hfs_bnode_put+0x318/0x324 fs/hfs/bnode.c:467
 hfs_btree_inc_height+0x4c0/0x9d0 fs/hfs/brec.c:525
 hfs_brec_insert+0x580/0x97c fs/hfs/brec.c:148
 __hfs_ext_write_extent+0x240/0x468 fs/hfs/extent.c:124
 hfs_ext_write_extent+0x148/0x1c0 fs/hfs/extent.c:144
 hfs_write_inode+0xc0/0x9a0 fs/hfs/inode.c:434
 write_inode fs/fs-writeback.c:1460 [inline]
 __writeback_single_inode+0x614/0x1770 fs/fs-writeback.c:1677
 writeback_sb_inodes+0x978/0x1718 fs/fs-writeback.c:1903
 wb_writeback+0x414/0x1130 fs/fs-writeback.c:2077
 wb_do_writeback fs/fs-writeback.c:2220 [inline]
 wb_workfn+0x3a8/0x1034 fs/fs-writeback.c:2260
 process_one_work+0x804/0x1484 kernel/workqueue.c:2292
 worker_thread+0x8e4/0xfec kernel/workqueue.c:2439
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:864
Code: aa1503e0 97e351bf 17ffffd5 97d145fa (d4210000) 
---[ end trace 0000000000000000 ]---