hfs: new node 0 already hashed? ------------[ cut here ]------------ WARNING: CPU: 1 PID: 9330 at fs/hfs/bnode.c:422 hfs_bnode_create+0x147/0x4e0 fs/hfs/bnode.c:422 Modules linked in: CPU: 1 PID: 9330 Comm: syz-executor.3 Not tainted 6.9.0-rc4-syzkaller-00038-g8cd26fd90c1a #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:hfs_bnode_create+0x147/0x4e0 fs/hfs/bnode.c:422 Code: 44 89 fe e8 3b 17 21 ff 45 39 fc 75 9e e8 11 1d 21 ff 4c 89 f7 e8 59 74 68 08 44 89 e6 48 c7 c7 40 c1 28 8b e8 ba ec 01 ff 90 <0f> 0b 90 e8 f1 1c 21 ff 48 89 d8 48 83 c4 18 5b 5d 41 5c 41 5d 41 RSP: 0018:ffffc900062df330 EFLAGS: 00010282 RAX: 000000000000001f RBX: ffff888055f18200 RCX: ffffc9002901a000 RDX: 0000000000000000 RSI: ffffffff816fc366 RDI: 0000000000000005 RBP: ffff88805f3ba000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 0000000000000005 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff88805f3ba0e0 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88802c300000(0063) knlGS:00000000f5e4eb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000200005c0 CR3: 0000000055e04000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hfs_bmap_alloc+0x75c/0x880 fs/hfs/btree.c:291 hfs_btree_inc_height.isra.0+0x100/0x830 fs/hfs/brec.c:471 hfs_brec_insert+0x81f/0xb90 fs/hfs/brec.c:148 __hfs_ext_write_extent+0x3fa/0x520 fs/hfs/extent.c:124 __hfs_ext_cache_extent fs/hfs/extent.c:174 [inline] hfs_ext_read_extent+0x809/0x9e0 fs/hfs/extent.c:202 hfs_extend_file+0x4e4/0xb10 fs/hfs/extent.c:401 hfs_get_block+0x17f/0x830 fs/hfs/extent.c:353 __block_write_begin_int+0x4fb/0x16e0 fs/buffer.c:2105 __block_write_begin fs/buffer.c:2154 [inline] block_write_begin+0xb1/0x4a0 fs/buffer.c:2213 cont_write_begin+0x53d/0x740 fs/buffer.c:2567 hfs_write_begin+0x87/0x150 fs/hfs/inode.c:53 generic_perform_write+0x272/0x620 mm/filemap.c:3974 __generic_file_write_iter+0x1fd/0x240 mm/filemap.c:4069 generic_file_write_iter+0xe7/0x350 mm/filemap.c:4095 call_write_iter include/linux/fs.h:2110 [inline] new_sync_write fs/read_write.c:497 [inline] vfs_write+0x6db/0x1100 fs/read_write.c:590 ksys_write+0x12f/0x260 fs/read_write.c:643 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x75/0x120 arch/x86/entry/common.c:321 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:346 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf727d579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f5e4e5ac EFLAGS: 00000292 ORIG_RAX: 0000000000000004 RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 0000000020000640 RDX: 000000000208e24b RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 10 06 adc %al,(%rsi) 2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 6: 10 07 adc %al,(%rdi) 8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi c: 10 08 adc %cl,(%rax) e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1e: 00 51 52 add %dl,0x52(%rcx) 21: 55 push %rbp 22: 89 e5 mov %esp,%ebp 24: 0f 34 sysenter 26: cd 80 int $0x80 * 28: 5d pop %rbp <-- trapping instruction 29: 5a pop %rdx 2a: 59 pop %rcx 2b: c3 ret 2c: 90 nop 2d: 90 nop 2e: 90 nop 2f: 90 nop 30: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi