hfs: new node 0 already hashed?
------------[ cut here ]------------
WARNING: CPU: 0 PID: 1743 at fs/hfs/bnode.c:432 hfs_bnode_create+0x428/0x4ec fs/hfs/bnode.c:431
Modules linked in:
CPU: 0 PID: 1743 Comm: kworker/u4:6 Not tainted 5.15.180-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: writeback wb_workfn (flush-7:3)
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : hfs_bnode_create+0x428/0x4ec fs/hfs/bnode.c:431
lr : hfs_bnode_create+0x428/0x4ec fs/hfs/bnode.c:431
sp : ffff800024586c30
x29: ffff800024586c40 x28: ffff0000ed717000 x27: 000000000000008c
x26: ffff0000ed71708c x25: dfff800000000000 x24: 1ffff000048b0d9c
x23: 0000000000000000 x22: ffff0000db8680e0 x21: ffff0000db868000
x20: 0000000000000000 x19: ffff0000da9e6400 x18: ffff800024586260
x17: 1fffe0003682e78e x16: ffff800011b54788 x15: 000000000001c96a
x14: 1ffff0000296e06c x13: dfff800000000000 x12: 0000000000000001
x11: 0000000000000000 x10: 0000000000000000 x9 : c59e00fa751dbf00
x8 : c59e00fa751dbf00 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000000 x3 : ffff80000aa14f3c
x2 : ffff0001b4173d10 x1 : 0000000100000000 x0 : 000000000000001f
Call trace:
 hfs_bnode_create+0x428/0x4ec fs/hfs/bnode.c:431
 hfs_bmap_alloc+0x5c0/0x6b4 fs/hfs/btree.c:288
 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+0xc0/0xc1c fs/hfs/inode.c:432
 write_inode fs/fs-writeback.c:1495 [inline]
 __writeback_single_inode+0x584/0x13a4 fs/fs-writeback.c:1705
 writeback_sb_inodes+0x94c/0x1654 fs/fs-writeback.c:1930
 wb_writeback+0x3fc/0xfc8 fs/fs-writeback.c:2104
 wb_do_writeback fs/fs-writeback.c:2247 [inline]
 wb_workfn+0x3a4/0x1070 fs/fs-writeback.c:2288
 process_one_work+0x790/0x11b8 kernel/workqueue.c:2310
 worker_thread+0x910/0x1034 kernel/workqueue.c:2457
 kthread+0x37c/0x45c kernel/kthread.c:334
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870
irq event stamp: 957550
hardirqs last  enabled at (957549): [<ffff80000826d288>] raw_spin_rq_unlock_irq kernel/sched/sched.h:1338 [inline]
hardirqs last  enabled at (957549): [<ffff80000826d288>] finish_lock_switch+0xbc/0x1e8 kernel/sched/core.c:4784
hardirqs last disabled at (957550): [<ffff800011b4fe3c>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (956994): [<ffff8000119729b8>] spin_unlock_bh include/linux/spinlock.h:408 [inline]
softirqs last  enabled at (956994): [<ffff8000119729b8>] batadv_nc_purge_paths+0x308/0x38c net/batman-adv/network-coding.c:475
softirqs last disabled at (956992): [<ffff800011972780>] spin_lock_bh include/linux/spinlock.h:368 [inline]
softirqs last disabled at (956992): [<ffff800011972780>] batadv_nc_purge_paths+0xd0/0x38c net/batman-adv/network-coding.c:446
---[ end trace 8cadc31f833aa958 ]---
------------[ cut here ]------------
kernel BUG at fs/hfs/bnode.c:479!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 1743 Comm: kworker/u4:6 Tainted: G        W         5.15.180-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: writeback wb_workfn (flush-7:3)
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : hfs_bnode_put+0x414/0x420 fs/hfs/bnode.c:479
lr : hfs_bnode_put+0x414/0x420 fs/hfs/bnode.c:479
sp : ffff800024586d50
x29: ffff800024586d50 x28: dfff800000000000 x27: ffff7000048b0dc0
x26: 1fffe0001b70d003 x25: 0000000000000200 x24: 1fffe0001b53cc80
x23: dfff800000000000 x22: ffff0000db868000 x21: ffff0000da9e6480
x20: 0000000000000000 x19: ffff0000da9e6400 x18: ffff800024586260
x17: 1fffe0003682e78e x16: ffff8000082513a0 x15: 000000000001c96a
x14: 1ffff0000296e06c x13: dfff800000000000 x12: 0000000000000001
x11: 0000000000000000 x10: 0000000000000000 x9 : ffff0000cd9851c0
x8 : ffff800008fe1f60 x7 : ffff80000abe2934 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff800008fe1ba4
x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 hfs_bnode_put+0x414/0x420 fs/hfs/bnode.c:479
 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+0xc0/0xc1c fs/hfs/inode.c:432
 write_inode fs/fs-writeback.c:1495 [inline]
 __writeback_single_inode+0x584/0x13a4 fs/fs-writeback.c:1705
 writeback_sb_inodes+0x94c/0x1654 fs/fs-writeback.c:1930
 wb_writeback+0x3fc/0xfc8 fs/fs-writeback.c:2104
 wb_do_writeback fs/fs-writeback.c:2247 [inline]
 wb_workfn+0x3a4/0x1070 fs/fs-writeback.c:2288
 process_one_work+0x790/0x11b8 kernel/workqueue.c:2310
 worker_thread+0x910/0x1034 kernel/workqueue.c:2457
 kthread+0x37c/0x45c kernel/kthread.c:334
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870
Code: aa1403e0 97e3dbfe 17ffffa5 97d3951a (d4210000) 
---[ end trace 8cadc31f833aa959 ]---