option from the mount to silence this warning. ======================================================= hfsplus: new node 0 already hashed? ------------[ cut here ]------------ WARNING: CPU: 0 PID: 3096 at fs/hfsplus/bnode.c:573 hfsplus_bnode_create+0x290/0x2d8 fs/hfsplus/bnode.c:572 Modules linked in: CPU: 0 PID: 3096 Comm: syz-executor411 Not tainted 6.1.0-rc8-syzkaller-33330-ga5541c0811a0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : hfsplus_bnode_create+0x290/0x2d8 fs/hfsplus/bnode.c:572 lr : hfsplus_bnode_create+0x290/0x2d8 fs/hfsplus/bnode.c:572 sp : ffff80000fed36b0 x29: ffff80000fed36b0 x28: ffff0001803d8000 x27: ffff0000c782c588 x26: 0000000040000000 x25: 0000000000000001 x24: 0000000000000000 x23: 0000000000000000 x22: ffff0000c78c20e0 x21: 0000000000000000 x20: ffff0000c78c2000 x19: ffff0000c782c500 x18: 00000000000000c0 x17: ffff80000dda8198 x16: ffff80000dbe6158 x15: ffff0000c9388000 x14: 0000000000000000 x13: 00000000ffffffff x12: ffff0000c9388000 x11: ff808000081c4d64 x10: 0000000000000000 x9 : c8c33559c4cbdc00 x8 : c8c33559c4cbdc00 x7 : ffff80000c091ebc x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000 x2 : ffff0001fefbecd0 x1 : 0000000100000000 x0 : 0000000000000023 Call trace: hfsplus_bnode_create+0x290/0x2d8 fs/hfsplus/bnode.c:572 hfsplus_bmap_alloc+0x414/0x47c fs/hfsplus/btree.c:415 hfs_btree_inc_height+0x88/0x2d8 fs/hfsplus/brec.c:475 hfsplus_brec_insert+0x80/0x42c fs/hfsplus/brec.c:75 __hfsplus_ext_write_extent+0x11c/0x18c fs/hfsplus/extents.c:107 __hfsplus_ext_cache_extent fs/hfsplus/extents.c:186 [inline] hfsplus_ext_read_extent fs/hfsplus/extents.c:218 [inline] hfsplus_file_extend+0x1c8/0x88c fs/hfsplus/extents.c:461 hfsplus_get_block+0x1c0/0x8a4 fs/hfsplus/extents.c:245 __block_write_begin_int+0x23c/0x9d4 fs/buffer.c:1991 __block_write_begin fs/buffer.c:2041 [inline] block_write_begin+0x74/0x14c fs/buffer.c:2102 cont_write_begin+0xf4/0x11c fs/buffer.c:2456 hfsplus_write_begin+0x64/0xac fs/hfsplus/inode.c:52 generic_perform_write+0xf0/0x2cc mm/filemap.c:3753 __generic_file_write_iter+0xd8/0x21c mm/filemap.c:3881 generic_file_write_iter+0x6c/0x168 mm/filemap.c:3913 call_write_iter include/linux/fs.h:2199 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x2dc/0x46c fs/read_write.c:584 ksys_write+0xb4/0x160 fs/read_write.c:637 __do_sys_write fs/read_write.c:649 [inline] __se_sys_write fs/read_write.c:646 [inline] __arm64_sys_write+0x24/0x34 fs/read_write.c:646 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall arch/arm64/kernel/syscall.c:52 [inline] el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x140 arch/arm64/kernel/syscall.c:197 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 irq event stamp: 16994 hardirqs last enabled at (16993): [] __up_console_sem+0xb0/0xfc kernel/printk/printk.c:261 hardirqs last disabled at (16994): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (16532): [] _stext+0x2e4/0x37c softirqs last disabled at (16521): [] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ kernel BUG at fs/hfsplus/bnode.c:618! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 3096 Comm: syz-executor411 Tainted: G W 6.1.0-rc8-syzkaller-33330-ga5541c0811a0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : hfsplus_bnode_put+0x1e8/0x1f4 fs/hfsplus/bnode.c:618 lr : hfsplus_bnode_put+0x1e8/0x1f4 fs/hfsplus/bnode.c:618 sp : ffff80000fed3740 x29: ffff80000fed3740 x28: ffff0000c78c2000 x27: ffff0000c9bee000 x26: ffff0000c7d82700 x25: 0000000000000000 x24: 0000000000001000 x23: ffff0000c78c2000 x22: 0000000000000000 x21: ffff0000c782c580 x20: 0000000000000000 x19: ffff0000c782c500 x18: 00000000000000c0 x17: ffff80000dda8198 x16: ffff80000dbe6158 x15: ffff0000c9388000 x14: 0000000000000000 x13: 00000000ffffffff x12: ffff0000c9388000 x11: ff808000088f2f20 x10: 0000000000000000 x9 : ffff8000088f2f20 x8 : ffff0000c9388000 x7 : ffff80000857b2e4 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000002 x2 : 0000000000000008 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: hfsplus_bnode_put+0x1e8/0x1f4 fs/hfsplus/bnode.c:618 hfs_btree_inc_height+0x28c/0x2d8 fs/hfsplus/brec.c:530 hfsplus_brec_insert+0x80/0x42c fs/hfsplus/brec.c:75 __hfsplus_ext_write_extent+0x11c/0x18c fs/hfsplus/extents.c:107 __hfsplus_ext_cache_extent fs/hfsplus/extents.c:186 [inline] hfsplus_ext_read_extent fs/hfsplus/extents.c:218 [inline] hfsplus_file_extend+0x1c8/0x88c fs/hfsplus/extents.c:461 hfsplus_get_block+0x1c0/0x8a4 fs/hfsplus/extents.c:245 __block_write_begin_int+0x23c/0x9d4 fs/buffer.c:1991 __block_write_begin fs/buffer.c:2041 [inline] block_write_begin+0x74/0x14c fs/buffer.c:2102 cont_write_begin+0xf4/0x11c fs/buffer.c:2456 hfsplus_write_begin+0x64/0xac fs/hfsplus/inode.c:52 generic_perform_write+0xf0/0x2cc mm/filemap.c:3753 __generic_file_write_iter+0xd8/0x21c mm/filemap.c:3881 generic_file_write_iter+0x6c/0x168 mm/filemap.c:3913 call_write_iter include/linux/fs.h:2199 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x2dc/0x46c fs/read_write.c:584 ksys_write+0xb4/0x160 fs/read_write.c:637 __do_sys_write fs/read_write.c:649 [inline] __se_sys_write fs/read_write.c:646 [inline] __arm64_sys_write+0x24/0x34 fs/read_write.c:646 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall arch/arm64/kernel/syscall.c:52 [inline] el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x140 arch/arm64/kernel/syscall.c:197 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 Code: a8c47bfd d50323bf d65f03c0 97e6cec2 (d4210000) ---[ end trace 0000000000000000 ]---