hfs: new node 0 already hashed? ------------[ cut here ]------------ WARNING: CPU: 0 PID: 14002 at fs/hfs/bnode.c:431 hfs_bnode_create.cold+0x27/0x4e fs/hfs/bnode.c:431 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 14002 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 panic+0x26a/0x50e kernel/panic.c:186 __warn.cold+0x20/0x5a kernel/panic.c:541 report_bug+0x262/0x2b0 lib/bug.c:183 fixup_bug arch/x86/kernel/traps.c:178 [inline] fixup_bug arch/x86/kernel/traps.c:173 [inline] do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038 RIP: 0010:hfs_bnode_create.cold+0x27/0x4e fs/hfs/bnode.c:431 Code: 14 07 fa e8 e8 39 6c f9 4c 89 ef e8 70 04 23 00 89 ee 48 c7 c7 e0 9c 7d 88 e8 3d 6b fd ff 48 c7 c7 40 9d 7d 88 e8 31 6b fd ff <0f> 0b e9 b1 1c 07 fa e8 ba 39 6c f9 89 ee 48 c7 c7 40 9a 7d 88 e8 RSP: 0018:ffff8880489a7290 EFLAGS: 00010282 RAX: 0000000000000024 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff814dff01 RDI: ffffed1009134e44 RBP: 0000000000000000 R08: 0000000000000024 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880a1506700 R13: ffff88809ccde550 R14: ffff88809ccde480 R15: 0000000000000000 hfs_bmap_alloc+0x4d6/0x5e0 fs/hfs/btree.c:288 hfs_btree_inc_height.isra.0+0xe6/0x950 fs/hfs/brec.c:471 hfs_brec_insert+0x84d/0xbb0 fs/hfs/brec.c:148 __hfs_ext_write_extent+0x3ec/0x510 fs/hfs/extent.c:124 __hfs_ext_cache_extent fs/hfs/extent.c:174 [inline] hfs_ext_read_extent+0x810/0xa20 fs/hfs/extent.c:202 hfs_extend_file+0x4a0/0xac0 fs/hfs/extent.c:401 hfs_get_block+0x17b/0x7e0 fs/hfs/extent.c:353 __block_write_begin_int+0x46c/0x17b0 fs/buffer.c:1978 __block_write_begin fs/buffer.c:2028 [inline] block_write_begin+0x58/0x2e0 fs/buffer.c:2087 cont_write_begin+0x55a/0x820 fs/buffer.c:2440 hfs_write_begin+0x87/0x150 fs/hfs/inode.c:58 generic_perform_write+0x1f8/0x4d0 mm/filemap.c:3170 __generic_file_write_iter+0x24b/0x610 mm/filemap.c:3295 generic_file_write_iter+0x3f8/0x730 mm/filemap.c:3323 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x51b/0x770 fs/read_write.c:487 vfs_write+0x1f3/0x540 fs/read_write.c:549 ksys_write+0x12b/0x2a0 fs/read_write.c:599 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f79751f20d9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f7973764168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f7975311f80 RCX: 00007f79751f20d9 RDX: 00000000000ffe00 RSI: 0000000020004200 RDI: 0000000000000004 RBP: 00007f79737641d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffe395a4faf R14: 00007f7973764300 R15: 0000000000022000 Kernel Offset: disabled Rebooting in 86400 seconds..