---------[ 137.618642][ T6713] ------------[ cut here ]------------ BTRFS: Transaction aborted (error -28) WARNING: fs/btrfs/inode.c:6871 at btrfs_add_link+0xc1a/0xec0 fs/btrfs/inode.c:6871, CPU#1: syz.5.90/6713 Modules linked in: CPU: 1 UID: 0 PID: 6713 Comm: syz.5.90 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:btrfs_add_link+0xc1e/0xec0 fs/btrfs/inode.c:6871 Code: e1 fd e9 ae 00 00 00 e8 b0 e3 c6 fd 84 c0 74 24 e8 17 dc e1 fd e9 9b 00 00 00 e8 0d dc e1 fd 48 8d 3d e6 64 90 0b 8b 74 24 08 <67> 48 0f b9 3a e9 76 fb ff ff e8 f3 7f 3f 07 41 89 c7 31 ff 89 c6 RSP: 0018:ffffc90005a07860 EFLAGS: 00010287 RAX: ffffffff83e27803 RBX: 0000000000000000 RCX: 0000000000080000 RDX: ffffc9001cdb1000 RSI: 00000000ffffffe4 RDI: ffffffff8f72dcf0 RBP: ffffc90005a07990 R08: ffff88802928bc80 R09: 0000000000000003 R10: 0000000000000100 R11: 00000000fffffffb R12: 1ffff1100c31e974 R13: 00000000ffffffe4 R14: ffff8880618f4ba0 R15: ffff88802a5f8001 FS: 00007f58cbb646c0(0000) GS:ffff888126442000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9c22d1fb4c CR3: 000000003d082000 CR4: 00000000003526f0 Call Trace: btrfs_create_new_inode+0x11e7/0x20e0 fs/btrfs/inode.c:6804 btrfs_create_common+0x189/0x310 fs/btrfs/inode.c:6930 btrfs_mkdir+0xc7/0xf0 fs/btrfs/inode.c:7069 vfs_mkdir+0x40b/0x630 fs/namei.c:5233 filename_mkdirat+0x289/0x520 fs/namei.c:5266 __do_sys_mkdirat fs/namei.c:5287 [inline] __se_sys_mkdirat+0x35/0x150 fs/namei.c:5284 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f58cd94b507 Code: 00 66 90 48 89 f2 b9 00 01 00 00 48 89 fe bf 9c ff ff ff e9 db f7 ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 b8 02 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f58cbb63e58 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 00007f58cbb63ee0 RCX: 00007f58cd94b507 RDX: 00000000000001ff RSI: 00002000000000c0 RDI: 00000000ffffff9c RBP: 0000200000000080 R08: 0000200000000140 R09: 0000000000000000 R10: 0000200000000080 R11: 0000000000000246 R12: 00002000000000c0 R13: 00007f58cbb63ea0 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess): 0: e1 fd loope 0xffffffff 2: e9 ae 00 00 00 jmp 0xb5 7: e8 b0 e3 c6 fd call 0xfdc6e3bc c: 84 c0 test %al,%al e: 74 24 je 0x34 10: e8 17 dc e1 fd call 0xfde1dc2c 15: e9 9b 00 00 00 jmp 0xb5 1a: e8 0d dc e1 fd call 0xfde1dc2c 1f: 48 8d 3d e6 64 90 0b lea 0xb9064e6(%rip),%rdi # 0xb90650c 26: 8b 74 24 08 mov 0x8(%rsp),%esi * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: e9 76 fb ff ff jmp 0xfffffbaa 34: e8 f3 7f 3f 07 call 0x73f802c 39: 41 89 c7 mov %eax,%r15d 3c: 31 ff xor %edi,%edi 3e: 89 c6 mov %eax,%esi