ioctl$BTRFS_IOC_GET_SUBVOL_INFO(0xffffffffffffffff, 0x81f8943c, 0x0)
ioctl$BTRFS_IOC_GET_SUBVOL_ROOTREF(0xffffffffffffffff, 0xd000943d, 0x0)
sigaltstack(&(0x7f0000ffc000/0x2000)=nil, 0x0)
r0 = openat$sr(0xffffffffffffff9c, &(0x7f0000000440), 0x4840, 0x0)
mmap$IORING_OFF_SQ_RING(&(0x7f0000ff6000/0xa000)=nil, 0xa000, 0x2000006, 0x12, r0, 0x0)
mlock(&(0x7f0000ffd000/0x2000)=nil, 0x2000)
munmap(&(0x7f0000ff8000/0x8000)=nil, 0x8000)